Question

Time taken in memory access through PTBR is :

a) Extended by a factor of 3
b) Extended by a factor of 2
c) Slowed by a factor of 3
d) Slowed by a factor of 2

Answer 1

Time taken in memory access through PTBR is slowed by a factor of 2. Option D is the answer.

Step-by-step explanation:

The Program Status Register (PSR) holds the Processor Time Base Register (PTBR) in the context of computer architecture. When accessing memory through PTBR, it introduces additional processing overhead. The correct answer is option D, "Slowed by a factor of 2." This indicates that accessing memory through PTBR results in a slowdown compared to direct memory access.

The factor of 2 signifies the additional time taken for memory access when involving PTBR. While PTBR is crucial for virtual memory management, it introduces a slight performance penalty due to the necessity of additional translation steps.

Option D is the answer.