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Quiz: COA Numericals

5 questionsNo time limitPass: 60%+10 XP on first pass

A revision set of ten exam-style COA numericals — memory size, 2's complement, IEEE 754, instruction formats, AMAT, cache tag bits, set mapping, pipeline speedup, effective CPI and disk access — each solved step by step and verified in Python, plus a one-page formula sheet.

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  1. Question 1

    What decimal value does the 8-bit 2's complement pattern 10101100 represent?

  2. Question 2

    What is the IEEE 754 single-precision hex for +12.5?

  3. Question 3

    256 KB, 8-way set-associative, 32-byte blocks, 32-bit address. How many tag bits?

  4. Question 4

    A 6-stage pipeline (1 ns per stage) runs 500 instructions with no stalls. What is the total time?

  5. Question 5

    25% branches, 40% taken, 3-cycle penalty per taken branch. What is the CPI?