What is the typical capacity of a single-layer DVD in bytes? MCQ with Answer and Explanation

What is the typical capacity of a single-layer DVD in bytes?
A. 4.7 GiB
B. 4.38 GB
C. 4.7 GB (4.38 GiB)
D. 4.38 TB
Answer: Option C
Solution (By JKSSB Mock Tests)
A single-layer DVD has a capacity of 4.7 GB (decimal) or 4.38 GiB (binary). For exams, they often say 4.7 GB.

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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is a type of memory that is used for storing the bootloader in a microcontroller?
A. DRAM
B. SRAM
C. Flash memory
D. EEPROM

Correct Answer: Option C


Explanation:
Microcontrollers often have on-chip flash memory for storing the bootloader and program code, as it is non-volatile and can be reprogrammed.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the role of a memory controller in a system with multiple memory channels?
A. To combine memory modules into one larger pool
B. To select which channel to use for each access
C. To distribute memory accesses across channels for increased bandwidth
D. All of the above

Correct Answer: Option D


Explanation:
A memory controller with multiple channels can distribute traffic to increase bandwidth, combine capacities, and select channels based on addressing.

This question belongs to: Computer Memory and Storage Devices
Question #3
What characteristic of a computer system is optimized when a designer adds more channels to the main system memory bus layout?
A. The resolution of the external monitor display.
B. The permanent storage durability of the ROM firmware.
C. The system memory bandwidth and data throughput rates.
D. The maximum capacity of the secondary storage drives.

Correct Answer: Option C


Explanation:
Adding more memory channels increases the width of the data bus between the CPU and RAM, allowing more data bits to transfer simultaneously and boosting system memory bandwidth.

This question belongs to: Computer Memory and Storage Devices