{"id":14354,"date":"2025-10-14T03:09:48","date_gmt":"2025-10-14T02:09:48","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=14354"},"modified":"2025-11-22T04:47:20","modified_gmt":"2025-11-22T04:47:20","slug":"computer-memory-top-100-mcqs-with-answer-and-explanation","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/10\/14\/computer-memory-top-100-mcqs-with-answer-and-explanation\/","title":{"rendered":"Computer Memory Top 100 MCQs With Answer and Explanation"},"content":{"rendered":"\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">1. The basic unit of memory is:<\/mark><\/strong><br>A) Bit<br>B) Byte<br>C) Nibble<br>D) Word<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> A bit (binary digit) is the smallest memory unit representing 0 or 1.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">2. 1 Byte = ?<\/mark><\/strong><br>A) 4 bits<br>B) 8 bits<br>C) 16 bits<br>D) 2 bits<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> 1 byte = 8 bits, which can represent 256 (2\u2078) values.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">3. A nibble consists of:<br><\/mark><\/strong>A) 2 bits<br>B) 4 bits<br>C) 8 bits<br>D) 16 bits<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> A nibble is half a byte, i.e., 4 bits.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">4. Which of the following is volatile memory?<br><\/mark><\/strong>A) ROM<br>B) Hard Disk<br>C) RAM<br>D) Pen Drive<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> RAM loses data when power is turned off, making it volatile.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">5. ROM is used to store:<br><\/mark><\/strong>A) User data<br>B) Temporary files<br>C) BIOS\/firmware<br>D) Cache memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> ROM stores firmware like BIOS, essential for system startup.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">6. Which memory is known as \u201cprimary memory\u201d?<br><\/mark><\/strong>A) RAM<br>B) ROM<br>C) HDD<br>D) Both a and b<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> RAM and ROM together form primary memory of a computer.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">7. Which of the following is not a type of RAM?<br><\/mark><\/strong>A) DRAM<br>B) SRAM<br>C) PRAM<br>D) SDRAM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> PRAM (Phase-change RAM) is not a standard RAM type; DRAM, SRAM, SDRAM are.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">8. Cache memory is located:<br><\/mark><\/strong>A) In the CPU<br>B) Between CPU and RAM<br>C) In secondary storage<br>D) On the motherboard only<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Cache acts as a high-speed buffer between CPU and main memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">9. Virtual memory is implemented using:<br><\/mark><\/strong>A) RAM<br>B) ROM<br>C) Hard Disk<br>D) Flash drive<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Virtual memory uses disk storage to extend RAM capacity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">10. Which memory is permanent and non-volatile?<br><\/mark><\/strong>A) RAM<br>B) Cache<br>C) ROM<br>D) Registers<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Virtual memory uses disk storage to extend RAM capacity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">11. The full form of EEPROM is:<br><\/mark><\/strong>A) Electrically Erasable Programmable Read-Only Memory<br>B) Electron Erased Programmable RAM<br>C) Effective Erasable Portable ROM<br>D) None<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> EEPROM can be electrically erased and reprogrammed.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">12. Which of the following memory is fastest?<br><\/mark><\/strong>A) RAM<br>B) Cache<br>C) Registers<br>D) Hard Disk<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Registers inside CPU are fastest, followed by cache and RAM.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">13. The speed of memory access is measured in:<br><\/mark><\/strong>A) MHz<br>B) Nanoseconds<br>C) Bytes per second<br>D) Hertz<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Memory access time is often measured in nanoseconds (ns).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">14. Which of these is secondary storage?<br><\/mark><\/strong>A) Pen Drive<br>B) RAM<br>C) Cache<br>D) Registers<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Pen drives are secondary storage, unlike RAM and cache.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">15. Flash memory is a type of:<br><\/mark><\/strong>A) Volatile memory<br>B) Non-volatile memory<br>C) Register memory<br>D) Cache memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Flash memory retains data without power, used in SSDs and pen drives.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">16. BIOS is stored in:<br><\/mark><\/strong>A) RAM<br>B) Hard Disk<br>C) ROM<br>D) Virtual memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> BIOS is firmware stored in ROM.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">17. Memory that can be both read and written quickly is:<br><\/mark><\/strong>A) RAM<br>B) ROM<br>C) PROM<br>D) EPROM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> RAM allows both read and write operations.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">18. The memory hierarchy is based on:<br><\/mark><\/strong>A) Cost<br>B) Speed<br>C) Size<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Memory hierarchy is a balance between speed, cost, and size.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">19. Which memory is known as \u201cbackup storage\u201d?<br><\/mark><\/strong>A) Primary memory<br>B) Secondary memory<br>C) Cache memory<br>D) ROM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Secondary memory like HDD\/SSD is used for backup.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">20. Which of the following is the largest memory size?<br><\/mark><\/strong>A) 1 TB<br>B) 1 PB<br>C) 1 GB<br>D) 1 MB<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> 1 PB (Petabyte) > 1 TB > 1 GB > 1 MB.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">21. The storage capacity of CD-ROM is usually:<br><\/mark><\/strong>A) 200 MB<br>B) 350 MB<br>C) 650\u2013700 MB<br>D) 4.7 GB<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Standard CD-ROMs store about 650\u2013700 MB.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">22. The storage capacity of a DVD is:<br><\/mark><\/strong>A) 700 MB<br>B) 4.7 GB<br>C) 25 GB<br>D) 50 GB<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> A standard single-layer DVD stores 4.7 GB.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">23. Which is the memory unit next higher to GB?<br><\/mark><\/strong>A) MB<br>B) TB<br>C) PB<br>D) KB<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Memory units progress as KB \u2192 MB \u2192 GB \u2192 TB \u2192 PB.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">24. Magnetic tapes are used for:<br><\/mark><\/strong>A) Random access<br>B) Sequential access<br>C) Both a and b<br>D) None<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Magnetic tapes allow only sequential access.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">25. DRAM stores data using:<br><\/mark><\/strong>A) Flip-flops<br>B) Capacitors<br>C) Registers<br>D) ROM cells<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> DRAM stores data in capacitors that must be refreshed.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">26. Which type of RAM needs to be refreshed thousands of times per second?<br><\/mark><\/strong>A) SRAM<br>B) DRAM<br>C) ROM<br>D) PROM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> DRAM (Dynamic RAM) stores data in capacitors, which leak charge and require constant refreshing.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">27. Which type of RAM is faster and more expensive?<br><\/mark><\/strong>A) DRAM<br>B) SRAM<br>C) SDRAM<br>D) VRAM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> SRAM (Static RAM) uses flip-flops, making it faster and costlier than DRAM.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">28. SDRAM stands for:<br><\/mark><\/strong>A) Synchronous Dynamic Random-Access Memory<br>B) Static Dynamic RAM<br>C) Sequential Data RAM<br>D) Secondary Dynamic RAM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> SDRAM synchronizes with the CPU clock for faster data transfer.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">29. Which memory type is commonly used in graphics cards?<br><\/mark><\/strong>A) DRAM<br>B) VRAM<br>C) Cache<br>D) EEPROM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> VRAM (Video RAM) is optimized for video and image processing in GPUs.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">30. ROM can be:<br><\/mark><\/strong>A) Programmable<br>B) Erasable<br>C) Non-volatile<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> ROM is non-volatile and can be PROM, EPROM, EEPROM depending on programmability.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">31. PROM stands for:<br><\/mark><\/strong>A) Pre-Read Only Memory<br>B) Programmable Read-Only Memory<br>C) Primary ROM<br>D) Permanent RAM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> PROM can be programmed once by the user.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">32. EPROM can be erased using:<br><\/mark><\/strong>A) Electrical signals<br>B) Magnetic fields<br>C) Ultraviolet light<br>D) Laser<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> EPROM chips are erased by UV light exposure\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">33. EEPROM can be erased by:<br><\/mark><\/strong>A) Laser<br>B) Electrical signals<br>C) Heat<br>D) Magnetic signals<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> EEPROM uses electrical signals for erasing and rewriting.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">34. Which of the following is the fastest memory after CPU registers?<br><\/mark><\/strong>A) RAM<br>B) Cache<br>C) ROM<br>D) Hard Disk<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Cache memory is extremely fast and placed close to CPU.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">35. Which cache memory is inside the CPU chip?<br><\/mark><\/strong>A) L1 cache<br>B) L2 cache<br>C) L3 cache<br>D) None<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> L1 cache is the smallest, fastest cache directly built into the CPU core.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">36. Which cache memory is shared by multiple CPU cores?<br><\/mark><\/strong>A) L1 cache<br>B) L2 cache<br>C) L3 cache<br>D) Register cache<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> L3 cache is larger and shared among cores for better performance.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">37. The purpose of cache memory is to:<br><\/mark><\/strong>A) Store backup data<br>B) Increase processing speed<br>C) Provide virtual storage<br>D) Replace RAM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Cache stores frequently used instructions to speed up CPU access.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">38. Virtual memory makes the system appear to have:<br><\/mark><\/strong>A) Less RAM<br>B) More RAM<br>C) More CPU cores<br>D) Larger hard disk<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Virtual memory uses disk space to extend RAM capacity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">39. Virtual memory is implemented using:<br><\/mark><\/strong>A) Paging<br>B) Segmentation<br>C) Both a and b<br>D) None<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Virtual memory uses paging and segmentation techniques.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">40. Which of the following is not true about virtual memory?<br><\/mark><\/strong>A) It uses secondary storage<br>B) It increases effective memory<br>C) It is faster than RAM<br>D) It allows larger programs to run<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Virtual memory is slower than RAM because it relies on disk access.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">41. The CPU register used to store the memory address of the next instruction is:<br><\/mark><\/strong>A) Instruction Register<br>B) Program Counter<br>C) Accumulator<br>D) MAR<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> The Program Counter (PC) holds the address of the next instruction to execute.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">42. Which register holds the address of data to be accessed in memory?<br><\/mark><\/strong>A) MDR<br>B) MAR<br>C) IR<br>D) PC<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Memory Address Register (MAR) stores the memory location being accessed.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">43. Which register temporarily stores data read from or written to memory?<br><\/mark><\/strong>A) MDR<br>B) MAR<br>C) Accumulator<br>D) PC<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Memory Data Register (MDR) stores actual data being transferred.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">44. The smallest and fastest memory in a computer is:<br><\/mark><\/strong>A) RAM<br>B) ROM<br>C) Registers<br>D) Cache<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Registers are inside CPU, making them the fastest memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">45. Which register holds the currently executing instruction?<br><\/mark><\/strong>A) MDR<br>B) IR<br>C) MAR<br>D) PC<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> The Instruction Register (IR) stores the current instruction being executed.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">46. Which memory stores data temporarily during CPU execution?<br><\/mark><\/strong>A) ROM<br>B) Cache<br>C) RAM<br>D) Both b and c<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Both cache and RAM temporarily store data for processing.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">47. Which is not a characteristic of RAM?<br><\/mark><\/strong>A) Volatile<br>B) Read\/write<br>C) Permanent storage<br>D) Fast<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> RAM is not permanent; data is lost when power is off.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">48. Static RAM is mostly used in:<br><\/mark><\/strong>A) Hard disks<br>B) Cache memory<br>C) Optical disks<br>D) Virtual memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> SRAM\u2019s high speed makes it ideal for cache memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">49. In memory hierarchy, the slowest storage is:<br><\/mark><\/strong>A) Registers<br>B) RAM<br>C) Hard disk<br>D) Cache<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Hard disks are slowest compared to RAM, cache, and registers.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">50. Which of the following is true about registers?<br><\/mark><\/strong>A) They are slower than RAM<br>B) They are part of secondary storage<br>C) They are located inside CPU<br>D) They store large amounts of data<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Registers are small, fast storage inside CPU, used for immediate data processing.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">51. Secondary memory is also called:<br><\/mark><\/strong>A) Primary storage<br>B) Permanent storage<br>C) Cache memory<br>D) Register memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Secondary memory (like HDD, SSD, optical disks) is non-volatile and used for long-term storage.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">52. Which of the following is not a secondary storage device?<br><\/mark><\/strong>A) Hard Disk<br>B) Pen Drive<br>C) DVD<br>D) Cache<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Cache is part of primary memory, not secondary storage.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">53. Hard disk stores data using:<br><\/mark><\/strong>A) Magnetic storage<br>B) Optical storage<br>C) electronic storage<br>D) Mechanical storage only<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Hard disks use magnetic platters to store data.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">54. Data in hard disks is accessed using:<br><\/mark><\/strong>A) Laser beam<br>B) Magnetic heads<br>C) Electrical signals only<br>D) Optical sensors<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> A read\/write head magnetically accesses data on disk platters.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">55. Access time of a hard disk is measured in:<br><\/mark><\/strong>A) Microseconds<br>B) Milliseconds<br>C) Nanoseconds<br>D) Seconds<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Hard disks have access times in milliseconds (slower than RAM).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">56. Optical storage devices store data using:<br><\/mark><\/strong>A) Magnetic fields<br>B) Electrical charges<br>C) Laser technology<br>D) Capacitors<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Optical disks (CD, DVD, Blu-ray) use lasers to read\/write data.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">57. <strong>Primary storage is ___ as compared to secondary storage.<\/strong><br><\/mark><\/strong>A) Slow and inexpensive<br>B) Fast and inexpensive<br>C) Fast and expensive<br>D) Slow and expensive<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Primary storage is fast and directly accessible by the CPU, but it is expensive per unit of storage\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">58. The Boot sector files of the system are stored in which computer memory?<br><\/mark><\/strong>A) ROM<br>B) Cache<br>C) RAM<br>D) Register<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> ROM stores the program instructions required to initially boot the computer. It only allows reading.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">59. Blu-ray disks can store up to:<br><\/mark><\/strong>A) 700 MB<br>B) 4.7 GB<br>C) 25\u201350 GB<br>D) 1 TB<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Blu-ray disks offer much higher capacity using blue laser technology.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">60. Which of these is a sequential access device?<br><\/mark><\/strong>A) Hard disk<br>B) Magnetic tape<br>C) SSD<br>D) DVD<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Magnetic tapes allow only sequential access, unlike disks.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">61. Magnetic tapes are mainly used for:<br><\/mark><\/strong>A) High-speed processing<br>B) Backup and archival<br>C) Cache memory<br>D) BIOS storage<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Tapes are cheap, reliable, and best for backups.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">62. Flash memory is a type of:<br><\/mark><\/strong>A) Volatile memory<br>B) Non-volatile memory<br>C) ROM only<br>D) Register memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Flash memory retains data without power, used in SSDs and USB drives.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">63. USB pen drives use:<br><\/mark><\/strong>A) Magnetic storage<br>B) Optical storage<br>C) Flash memory<br>D) Cache memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Pen drives store data using flash memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">64. SSDs are based on:<br><\/mark><\/strong>A) Magnetic storage<br>B) Optical storage<br>C) Flash memory<br>D) Sequential access<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Solid State Drives use NAND flash chips instead of magnetic platters.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">65. Which of the following is not true about SSDs?<br><\/mark><\/strong>A) They have no moving parts<br>B) They are faster than HDDs<br>C) They are cheaper than HDDs<br>D) They use flash memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> SSDs are faster and more reliable but generally more expensive.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">66. Average access time of SSDs is measured in:<br><\/mark><\/strong>A) Milliseconds<br>B) Microseconds<br>C) Seconds<br>D) Hours<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> SSDs are much faster, with access times in microseconds.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">67. Which storage is more durable and shock-resistant?<br><\/mark><\/strong>A) HDD<br>B) SSD<br>C) Magnetic Tape<br>D) DVD<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> SSDs have no moving parts, making them durable.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">68. Cloud storage depends on:<br><\/mark><\/strong>A) Local hard disks<br>B) Remote servers accessed via the internet<br>C) Cache memory<br>D) Optical disks<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Cloud storage keeps data on remote servers accessed online.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">69. Which of these is not a cloud storage service?<br><\/mark><\/strong>A) Google Drive<br>B) Dropbox<br>C) OneDrive<br>D) BIOS<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> BIOS is firmware, not a storage service.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">70. Advantage of cloud storage is:<br><\/mark><\/strong>A) Accessibility from anywhere<br>B) Automatic backup<br>C) Easy sharing<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Cloud storage provides remote access, backup, and sharing.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">71. Which is not a disadvantage of cloud storage?<br><\/mark><\/strong>A) Data security risk<br>B) Internet dependency<br>C) High local hardware cost<br>D) Privacy concerns<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Cloud reduces local storage cost but raises security\/privacy concerns.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">72. Which storage device uses concentric tracks and sectors?<br><\/mark><\/strong>A) Hard Disk<br>B) Magnetic Tape<br>C) Pen Drive<br>D) SSD<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Hard disks organize data in platters with tracks and sectors.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">73. <strong>PC stands for in computer registers<\/strong><br><\/mark><\/strong>A) Personal Computer<br>B) Personal Counter<br>C) Program counter<br>D) Programmable computer<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Program counter stores the memory address of the next instruction that needs to be fetched and executed by the CPU.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">74. Hybrid drives (SSHD) combine:<br><\/mark><\/strong>A) SSD + RAM<br>B) HDD + SSD<br>C) Cache + ROM<br>D) Cloud + Local storage<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Hybrid drives combine HDD capacity with SSD speed.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">75. Which is the fastest type of external storage?<br><\/mark><\/strong>A) USB 2.0 HDD<br>B) USB 3.0 Pen Drive<br>C) SSD with NVMe over USB-C<br>D) DVD<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> NVMe-based SSDs connected via USB-C\/Thunderbolt offer the highest speeds.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">76. Memory management in operating systems involves:<br><\/mark><\/strong>A) Allocation of memory<br>B) Protection of memory<br>C) Deallocation of memory<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Memory management includes allocation, protection, and deallocation of memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">77. <strong>Why RAM is so called?<\/strong><br><\/mark><\/strong>A) Because it is read and write memory<br>B) Because it is a volatile memory<br>C) Because it can be selected directly for storing and retrieving data and instructions of any location of chip<br>D) Because it is a non-volatile memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> RAM is so called because it allows for random access to any data stored within it, meaning the processor can access any memory location in roughly the same amount of time, regardless of its physical location.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">78. RAM is _ _ _ _ _ _ and _ _ _ _ _.<br><\/mark><\/strong>A) volatile, temporary<br>B) non-volatile, temporary<br>C) volatile, permanent<br>D) non-volatile, permanent<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> RAM is volatile which means its data are lost when the device is powered off.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">79. Swapping in memory management means:<br><\/mark><\/strong>A) Moving processes between RAM and secondary memory<br>B) Replacing cache lines<br>C) Allocating registers<br>D) Virtualizing memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Swapping transfers processes in\/out of RAM to free memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">80. The term &#8220;thrashing&#8221; in memory management refers to:<br><\/mark><\/strong>A) High CPU utilization<br>B) Excessive paging\/swapping<br>C) Cache replacement<br>D) ROM corruption<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Thrashing occurs when too much paging reduces system performance.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">81. The main purpose of a memory hierarchy is:<br><\/mark><\/strong>A) Reduce cost<br>B) Improve speed<br>C) Balance cost &amp; performance<br>D) Increase CPU cores<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Memory hierarchy balances speed, cost, and capacity.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">82. Which memory unit is the smallest in memory hierarchy?<br><\/mark><\/strong>A) Cache<br>B) Register<br>C) RAM<br>D) Hard Disk<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Registers are the smallest and fastest memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">83. Which is slower but cheaper per GB?<br><\/mark><\/strong>A) Cache<br>B) RAM<br>C) HDD<br>D) SSD<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> HDDs are cheap but slower than SSD and RAM.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">84. Which principle is the basis of cache memory?<br><\/mark><\/strong>A) Principle of parallelism<br>B) Principle of locality<br>C) Principle of segmentation<br>D) Principle of virtual memory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Cache works on temporal and spatial locality (recent &#038; nearby data).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">85. <strong>Where are saved files stored in computer?<\/strong><br><\/mark><\/strong>A) RAM<br>B) Hard disk<br>C) Cache<br>D) Any of above<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Hard disk (or other secondary storage like an SSD): When you actively choose to &#8220;save&#8221; a file (e.g., in a word processor), The hard disk retains this data even when the computer is turned off.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">86. A memory access that finds the data in cache is called:<br><\/mark><\/strong>A) Cache miss<br>B) Cache hit<br>C) Page fault<br>D) Swap<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Cache hit means data is found in cache, speeding up access.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>87. A memory access that does not find data in cache is called:<br><\/strong><\/mark>A) Page fault<br>B) Cache miss<br>C) Swap<br>D) Interrupt<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Cache miss requires fetching from slower memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">88. Page fault occurs when:<br><\/mark><\/strong>A) Page is not in RAM<br>B) Page is in cache<br>C) CPU instruction fails<br>D) Disk is full<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Page fault happens when a required page is absent in RAM.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">89. <strong>How many Bytes make a Megabyte?<\/strong><br><\/mark><\/strong>A) 1024<br>B) 128<br>C) 1048576<br>D) 512<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> 1 Megabyte (MB) = 1,048,576 bytes. This is calculated as 1024 X1024 bytes (or 2<sup>20<\/sup>bytes). \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">90. In memory hierarchy, which is highest in speed?<br><\/mark><\/strong>A) RAM<br>B) Cache<br>C) Registers<br>D) SSD<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> Registers are fastest, followed by cache, RAM, SSD, HDD. \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">91. In memory hierarchy, which is lowest in cost per bit?<br><\/mark><\/strong>A) Registers<br>B) Cache<br>C) RAM<br>D) Magnetic tape<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> Tapes are slowest but cheapest per bit. \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">92. What is the unit of memory bandwidth?<br><\/mark><\/strong>A) Bytes per second<br>B) Bits per second<br>C) Instructions per second<br>D) Hertz<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Memory bandwidth is data transfer rate, measured in bytes\/sec. \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">93. The term \u201clatency\u201d in memory means:<br><\/mark><\/strong>A) Total capacity<br>B) Delay in accessing data<br>C) Speed of CPU<br>D) Virtual memory size<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> Latency is the delay between a request and data delivery. \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">94. <strong>A ____ approximately one billion Bytes.<\/strong><br><\/mark><\/strong>A) Kilo Byte<br>B) bit<br>C) Giga Byte<br>D) Mega Byte<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> A Gigabyte (GB) is approximately one billion bytes. Kilobyte (KB): 1 thousand bytes, Megabyte (MB): 1 million bytes, Gigabyte (GB): 1 billion bytes, Terabyte (TB): 1 trillion bytes\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">95. <strong>The highest unit of information, computer can understand and process, is known as a<\/strong><br><\/mark><\/strong>A) ZETTA BYTE<br>B) YOTTA BYTE<br>C) BRONTO BYTE<br>D) GEOP BYTE<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b> GEOP BYTE\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">96. Which is the fastest among these?<br><\/mark><\/strong>A) DDR3 RAM<br>B) DDR4 RAM<br>C) DDR2 RAM<br>D) SDRAM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> DDR4 offers higher speed and efficiency than earlier generations.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">97. The memory size of 4 GB RAM equals:<br><\/mark><\/strong>A) 2\u00b3\u2070 bytes<br>B) 2\u00b3\u00b2 bytes<br>C) 2\u00b2\u2070 bytes<br>D) 2\u00b9\u2070 bytes<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> 4 GB = 4 \u00d7 (2\u00b3\u2070) = 2\u00b3\u00b2 bytes.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">98. Which of the following best describes BIOS memory?<br><\/mark><\/strong>A) Volatile, user-programmable<br>B) Non-volatile, system firmware<br>C) Volatile, cache<br>D) Secondary storage<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B <\/b><BR>\n<b>Explanation:<\/b> BIOS is stored in non-volatile ROM\/flash memory.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">99. The technology used in SSDs is:<br><\/mark><\/strong>A) Magnetic<br>B) Optical<br>C) NAND flash<br>D) Registers<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b> SSDs use NAND flash chips for storage.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">100. Which is the correct memory hierarchy (fastest to slowest)?<br><\/mark><\/strong>A) Registers \u2192 Cache \u2192 RAM \u2192 Secondary Storage<br>B) Cache \u2192 Registers \u2192 RAM \u2192 Secondary Storage<br>C) RAM \u2192 Registers \u2192 Cache \u2192 Secondary Storage<br>D) Secondary Storage \u2192 RAM \u2192 Cache \u2192 Registers<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A <\/b><BR>\n<b>Explanation:<\/b> Registers \u2192 Cache \u2192 RAM \u2192 Secondary Storage, This is the correct order of speed in memory hierarchy.\n <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. The basic unit of memory is:A) BitB) ByteC) NibbleD) Word Show Answer Answer: A Explanation: A bit (binary digit) is the smallest memory unit representing 0 or 1. 2. 1 Byte = ?A) 4 bitsB) 8 bitsC) 16 bitsD) 2 bits Show Answer Answer: B Explanation: 1 byte = 8 bits, which can represent<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[11242,4029,5649],"class_list":{"0":"post-14354","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-computer","7":"tag-computer-memory-top-100-mcqs-with-answer-and-explanation","8":"tag-mcqs-adda","9":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/14354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=14354"}],"version-history":[{"count":28,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/14354\/revisions"}],"predecessor-version":[{"id":31006,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/14354\/revisions\/31006"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=14354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=14354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=14354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}