Western Governors University (WGU) ICSC3120 C952 Computer Architecture Practice Exam

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R-format ALU operations require which of the following?

A dedicated memory buffer.

A register file and the ALU.

R-format ALU operations are designed to perform operations using data that resides in registers. To carry out these operations, a register file is essential because it stores the operands needed for the computation. The Arithmetic Logic Unit (ALU) performs the actual arithmetic or logical operations on these operands.

In R-format instructions, the operands are fetched from the register file, and the results of the ALU operations are typically written back to the register file. This architecture allows for efficient operations as registers provide faster access time compared to memory.

Therefore, the need for a register file, in conjunction with the ALU, is vital for executing R-format ALU operations efficiently. This setup allows for the immediate processing of data without additional delays that might involve moving data from external sources or memory.

An external processing unit.

A memory access protocol.

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