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ISRO Exam CS 2017 Topic-Wise Quiz Computer Organization (Datapath & Control Unit)

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Question 1

Suppose two jobs, each of which needs 10 min of CPU time, start simultaneously. Assume 50%I/O wait time.
How long will it take for both to complete if they run sequentially?

Question 2

A particular parallel program computation requires 100 seconds when executed on a single CPU. If 20% of this computation is strictly sequential, then theoretically the best possible elapsed times for this program running on 2 CPUs and 4 CPUs respectively are

Question 3

A processor that has carry, overflow and sign flag bits as part of its program status word (PSW)performs addition of the following two 2’s complement numbers 01001101 and 11101001. After the execution of this addition operation, the status of the carry, overflow and sign flags, respectively will be

Question 4

The microinstructions stored in the control memory of a processor have a width of 26 bits. Each microinstruction is divided into three fields: micro operation fields of 13 bits, a next address field (X), and a MUX select field (Y). There are 8 bits status in the inputs of the MUX. How many bits are there in the X and Y fields, and what is the size of the control memory in number of words?

Question 5

In which class of Flynns Taxonomy, von Neumann architecture belongs to?
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Apr 30GATE & PSU CS