What is the typical capacity of a standard DVD+R disc? MCQ with Answer and Explanation

What is the typical capacity of a standard DVD+R disc?
A. 8.5 GB
B. 4.7 GB
C. 700 MB
D. 25 GB
Answer: Option B
Solution (By JKSSB Mock Tests)
DVD+R (single-layer) holds 4.7 GB, same as DVD-R.

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Practice More Memory and Storage Devices Questions

Question #1
Which unit is commonly used to express hard disk capacity?
A. Bits
B. Watts
C. Bytes
D. Hertz

Correct Answer: Option C


Explanation:
Hard disk capacity is typically expressed in bytes (e.g., gigabytes, terabytes). Bits are used for data rates, hertz for frequency, and watts for power.

This question belongs to: Computer Memory and Storage Devices
Question #2
What does a computer use to bridge the speed disparity between the ultra-fast CPU and the slower main memory?
A. ROM
B. Cache Memory
C. Virtual Memory
D. Hard Disk Drive

Correct Answer: Option B


Explanation:
Cache memory is small, high-speed semiconductor memory designed to hold frequently accessed instructions and data to minimize CPU wait times.

This question belongs to: Computer Memory and Storage Devices
Question #3
What is the main purpose of virtual memory?
A. To increase the physical RAM capacity
B. To reduce the cost of memory
C. To allow programs to use more memory than physically available
D. To speed up memory access

Correct Answer: Option C


Explanation:
Virtual memory enables a computer to use more memory than is physically installed by swapping data between RAM and secondary storage (like a hard disk), allowing large programs to run.

This question belongs to: Computer Memory and Storage Devices