CCC Online Test

CCC Online Test

Main memory is

Question : Main memory is

A. Volatile

B. Non-volatile

C. Volatile and nonvolatile

D. None of the above

Solution

A. Volatile

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Question : A certain processor uses a fully associative cache of size 16 kB. The cache block size is 16 bytes. Assume that the main memory is byte addressable and uses a 32-bit address. How many bits are required for the Tag and the Index fields respectively in the addresses generated by the processor?

A. 24 bits and 0 bits

B. 28 bits and 4 bits

C. 24 bits and 4 bits

D. 28 bits and 0 bits

Solution

D. 28 bits and 0 bits

Explanation

Cache memory size = 16 kB

Block size = 16 B

Main memory address = 32 bit

Number of lines (N)

Fully associative cache memory (N-way)

So, number of sets (S)

∴ Address format:

So, TAG = 28 bit

Index = 0 bit (No address)

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Question : Main memory is also known as RAM.

A. TRUE

B. FALSE

Solution

A. TRUE

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