The Pentium 4 _________ component executes micro-operations,fetching the required data from the L1 data cache and temporarily storing results in registers.
A)fetch / decode unit
B)out-of-order execution logic
C)execution unit
D)memory subsystem

Question

Quizplus · Accepted Answer

The execution unit of the Pentium 4 CPU is responsible for executing micro-operations, fetching data from the L1 cache, and temporarily storing results in registers. The fetch/decode unit is responsible for fetching instructions from memory and decoding them into micro-operations. Out-of-order execution logic is responsible for executing micro-operations out of order to optimize performance. The memory subsystem is responsible for fetching data from main memory and storing it in caches. Therefore, the best choice is C.

The Pentium 4 _________ Component Executes Micro-Operations,fetching the Required Data