
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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please answer all the parts within 30 minutes. make sure all partsare answered else i will give negative ratings.

Transcribed Image Text:Question 1
Suppose that on a given single cycle CPU it takes:
• 40 nanoseconds to read a word from either instruction or data memory
• 31 nanoseconds to access (read or write) the register file
• 36 nanoseconds to perform an ALU operation
How many nanoseconds will it take to execute a SUB command on this machine?
Question 2
For the next 2 questions,
given the following MIPS assembly code:
ori $12, $t1, 55
beq $t2, $t3, Label
sw $t5, 12($t3)
andi $t5, $t2, 48
sub $t5, $t2, $t6
add $t6, $t1,$t2
Label:
or $55, $s2, $s3
How many nanoseconds will it take to run this code
on a single cycle CPU with a 33 nanosecond clock cycle time when:
a) the branch is NOT taken?
Question 3
How many nanoseconds will it take to run the same code
on the same single cycle CPU when:
b) the branch is TAKEN?
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