Computer Knowledge

Computer Memory and Storage

2,477 Questions

Computer memory and storage questions test foundational knowledge of hardware, cache mapping, and data transfer mechanisms. Key areas include Direct Memory Access, analog recording, and RAID levels. This section is essential for candidates preparing for banking and government computer proficiency tests.

Cache memory mappingDirect memory accessRAID storage levelsHard disk technologyOptical media storageMemory addresses

Computer Memory and Storage Questions

Multiple choice general knowledge science & technology
  1. Laser

  2. Magnetic

  3. Light

  4. Chemical

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hard disk drives use magnetic storage technology where data is encoded on magnetic platters using read/write heads. Laser technology is used in optical drives (CD/DVD), light is used in fiber optics, and chemical storage is not a standard computer storage mechanism.

Multiple choice general knowledge science & technology
  1. BIOS

  2. CMOS

  3. EEPROM

  4. Registry

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Windows stores device driver configuration in the Registry database, specifically under HKLM\SYSTEM\CurrentControlSet\services. The Registry is a hierarchical database that stores all Windows configuration settings. BIOS and CMOS are firmware-level storage for motherboard settings, not Windows-specific driver configurations. EEPROM is a type of memory chip, not a configuration storage system.

Multiple choice general knowledge science & technology
  1. DB - 15

  2. Molex

  3. PS2

  4. RJ 11

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Molex connectors are the standard 4-pin power connectors used to supply electricity to internal optical drives like CD-ROM and DVD drives, as well as hard drives. They provide +5V and +12V power rails. DB-15 connects older game ports or monitors, PS/2 is for keyboards and mice, and RJ11 is for telephone lines - none of these power disc drives.

Multiple choice general knowledge science & technology
  1. RAM

  2. PROM

  3. ROM

  4. CD R/W

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Page faults occur when the system needs to access data that has been moved from RAM to virtual memory on disk. While the question states 'due to RAM,' it's more accurate to say page faults occur due to insufficient RAM or the virtual memory paging system. However, given the options, RAM is the best answer as PROM, ROM, and CD R/W are not involved in virtual memory management.

Multiple choice general knowledge science & technology
  1. MB

  2. GB

  3. TB

  4. KB

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the standard data storage hierarchy, TB (Terabyte) is the largest unit listed, followed by GB (Gigabyte), MB (Megabyte), and KB (Kilobyte). The progression is: 1 KB = 1024 bytes, 1 MB = 1024 KB, 1 GB = 1024 MB, and 1 TB = 1024 GB. Larger units like PB (Petabyte) and EB (Exabyte) exist but aren't listed.

Multiple choice general knowledge science & technology
  1. Crypto Virus

  2. Boot Sector Virus

  3. FAT Virus

  4. Hard Disk Virus

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

FAT (File Allocation Table) viruses specifically target and damage the FAT sections of the hard disk, which the operating system uses to locate and access files. Boot Sector Viruses (B) infect the boot sector, while Hard Disk Virus (D) is not a standard classification. Crypto Viruses (A) encrypt files rather than damaging access sections.

Multiple choice general knowledge
  1. Oblitron

  2. Obitrum

  3. Oblicius

  4. Obliviate

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Obliviate is the Memory Charm used to erase or completely clear a person's memories, commonly used by wizards to maintain the Statue of Secrecy. Gilderoy Lockhart was famous for (mis)using this spell. The other options are made-up spell names.

Multiple choice general knowledge science & technology
  1. 32MB

  2. 64MB

  3. 128MB

  4. 256MB

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Microsoft Windows XP had minimum system requirements of 64MB RAM, though 128MB was recommended for acceptable performance. The question asks for minimum requirements, not recommended, making 64MB the correct answer. Windows XP could technically run on 64MB, but performance would be very slow. Many users upgraded to 256MB or more for better performance.

Multiple choice general knowledge science & technology
  1. Chkdsk

  2. Disk Management

  3. Device Manager

  4. Scandisk

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Disk Management is the Windows utility that allows users to view and modify disk partition information. It shows all drives, their partitions, sizes, and status. Chkdsk checks for filesystem errors. Device Manager manages hardware devices. Scandisk is an older disk checking utility. Only Disk Management provides the full partition viewing interface.