Completed
Computer Memory
Questions From This Challenge
Q1mcq1 mark
What is the standard number of bits that make up one byte?
8 ✓
4
16
1024
Q2mcq1 mark
How many bytes are there in 1 Kilobyte (KB), as conventionally used in computer memory measurement?
1024 ✓
1000
100
8
Q3mcq1 mark
Which of the following correctly orders memory units from smallest to largest?
Byte < Kilobyte < Megabyte < Gigabyte ✓
Kilobyte < Byte < Gigabyte < Megabyte
Megabyte < Kilobyte < Byte < Gigabyte
Gigabyte < Megabyte < Kilobyte < Byte
Q4mcq1 mark
Which type of memory is volatile, meaning it loses all of its stored data as soon as the computer's power is switched off?
RAM ✓
ROM
Hard Disk
Pen Drive
Q5mcq1 mark
Which type of memory is non-volatile and typically stores fixed, essential startup instructions such as the BIOS, retaining its contents even without power?
ROM ✓
RAM
Cache memory
SSD
Q6mcq1 mark
Which type of ROM can be erased by exposing it to ultraviolet light and then reprogrammed?
EPROM ✓
PROM
EEPROM
DRAM
Q7mcq1 mark
Which type of ROM can be erased and reprogrammed electrically, without needing to be removed from the computer or exposed to UV light?
EEPROM ✓
PROM
EPROM
SRAM
Q8mcq1 mark
Cache memory is placed between the CPU and RAM primarily to:
Speed up processing by storing frequently accessed data closer to the CPU ✓
Provide permanent, non-volatile backup storage
Increase the total secondary storage capacity
Convert analog signals into digital signals
Q9mcq1 mark
Which of the following is an example of secondary (auxiliary) storage rather than primary memory?
Hard Disk Drive ✓
RAM
Cache memory
CPU register
Q10mcq1 mark
Compared to a traditional Hard Disk Drive (HDD), a Solid State Drive (SSD) generally offers which key advantage due to having no moving mechanical parts?
Faster data access speed ✓
Lower total storage capacity always
Higher volatility
Requirement of constant power to retain data
Q11mcq1 mark
When a file is deleted from the Recycle Bin or Trash on a typical computer, what actually happens to the file's data on the storage device?
The space is simply marked as free for reuse, but the actual data usually remains until overwritten ✓
The data is instantly and permanently destroyed beyond any recovery
The file is automatically encrypted for safekeeping
The file is physically moved to a different disk
Q12mcq1 mark
Software tools designed to retrieve files that were deleted from the Recycle Bin or formatted from a drive are known as:
Data recovery software ✓
Compilers
Device drivers
Spreadsheet software
Q13mcq1 mark
Before discarding or selling an old storage device, why is merely deleting sensitive files (without secure erasure) considered a security risk?
Because data recovery tools can often still retrieve the deleted but not-yet-overwritten data ✓
Because deleted files automatically get emailed to the previous owner
Because ROM chips cannot be physically removed
Because deleting a file always increases the storage device's temperature
Q14mcq1 mark
Which of the following is the most effective way to protect sensitive data stored on a laptop in case the device is lost or stolen?
Encrypting the stored data ✓
Increasing the RAM size
Using a faster processor
Adding more secondary storage
Q15mcq1 mark
Which of the following is NOT typically a characteristic of primary memory (RAM), compared to secondary storage?
Large, permanent storage capacity for long-term data ✓
Directly accessible by the CPU during processing
Faster access speed than secondary storage
Temporary storage used only during processing