Which of the following is not a form of memory?
(A) instruction cache
(B) instruction register
(C) instruction opcode
(D) translation lookaside buffer
Answer: (C)
Explanation: Instruction Cache – Used for storing instructions that are frequently used
Instruction Register – Part of CPU’s control unit that stores the instruction currently being executed
Instruction Opcode – It is the portion of a machine language instruction that specifies the operation to be performed
Translation Lookaside Buffer – It is a memory cache that stores recent translations of virtual memory to physical addresses for faster access.
So, all the above except Instruction Opcode are memories.
Thus, C is the correct choice.
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