Computer Networking: A Top-Down Approach (7th Edition)
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.
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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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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