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1- Suppose that the processor has access to 3 levels of memory. Level 1 contains 1000 words and has an access time of 0.01 us; level 2 contains 10,000 words and has an access time of 0.1 us; level 3 contains 100,000 words and has an access time of 1 µs. Suppose 80% of the memory accesses are found in level 1, 15% of the memory accesses are found in level 2, 5% of the memory accesses are found in level 3, then find the average access time ?

1- Suppose that the processor has access to 3 levels of memory. Level 1 contains 1000 words and has an access time of 0.01 us; level 2 contains 10,000 words and has an access time of 0.1 us; level 3 contains 100,000 words and has an access time of 1 µs. Suppose 80% of the memory accesses are found in level 1, 15% of the memory accesses are found in level 2, 5% of the memory accesses are found in level 3, then find the average access time ?

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:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Suppose that the processor has access to 3 levels of memory. Level 1 contains 1000 words and has an access time of 0.01 µs; level 2 contains 10,000 words and has an access time of 0.1 µs; level 3 contains 100,000 words and has an access time of 1 µs. Suppose 80% of the memory accesses are found in level 1, 15% of the memory accesses are found in level 2, 5% of the memory accesses are found in level 3, then find the average access time ? a) 0.08 microsec b) 0.1 microsec 0.01 microsec d) 0.02 micrsec e) 0.15 microsec f) 0.06 microsec
Transcribed Image Text:Suppose that the processor has access to 3 levels of memory. Level 1 contains 1000 words and has an access time of 0.01 µs; level 2 contains 10,000 words and has an access time of 0.1 µs; level 3 contains 100,000 words and has an access time of 1 µs. Suppose 80% of the memory accesses are found in level 1, 15% of the memory accesses are found in level 2, 5% of the memory accesses are found in level 3, then find the average access time ? a) 0.08 microsec b) 0.1 microsec 0.01 microsec d) 0.02 micrsec e) 0.15 microsec f) 0.06 microsec
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