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Category > Computer Science Posted 20 Dec 2017 My Price 10.00

ITEC 625 9044 Computer Systems Architecture (2172)

Need help with both parts of answers for questions 1, 2, and 3.

University of Maryland University College

ITEC 625 9044 Computer Systems Architecture (2172)

Final Examinations

 

 

Name:                                                                                                                      .

Answer all questionssuccinctly and clearly, explain your answer; show all your workto earn full credit.  Please note that answers without explanations, will not receive credit.   Do not quote from or reference any source. All explanations should be in your own words. Answer in the space provided or add lines if needed. Please note this is an open book/notes exam; it should be completed individually, not shared.

Save the completed test in this MS Word file as <YourLastname-FinalExam>. Next, submit your file, via the Assignments tabbefore 11:59 PM ON Thursday, 4/20/17 deadline.Late submissions will incur a penalty of 10% each day

 

1.       Consider the following structure of the instruction register               

Op code

Address #1

Address #2

4bits

16 bits

16 bits

 

  1. [10 points] What is the maximum number of distinct operation codes that can be recognized and executed by the processor

 

 

 

 

 

 

 

 

 

 

  1. [10 points] What is the maximum memory size of this machine                                                                                                               

                    

 

 

 

 

 

2.       [10 points] Convert -2047ten into a 32-bit two’s compliment binary number

 

 

 

 

 

 

3.       The table below shows the number of floating point operations executed in three different programs and the runtime for those programs on three different computers:

Program

Floating-point Operations

Execution Time in Seconds

Computer A

Computer B

Computer C

Program 1

5 x109

2

5

10

Program 2

20 x 109

20

20

20

Program 3

40 x 109

200

50

15

(a)    [10 points] Which computer is fastest according to total execution time?

 

 

 

 

 

 

 

(b)   [10 points] How many times as fast is it compared to the other two computers?

 

 

 

 

 

 

 

 

 

4.       [10 points] Show the IEEE 754 binary representation for the floating point number 0.1ten in single precision

 

 

 

 

 

 

 

 

 

5.       [10 points]Discuss what happens when a cache miss occurs.

 

 

 

 

 

 

4(ii) [10 points] Does this result in a major slowdown in execution of the instruction? If so why?

           .

 

 

 

 

 

 

 

 

4 (iii) [10 points] What is the purpose of a tag in cache system?

.

 

 

 

 

 

6.       [10 points] Explain the purpose of a bus interface

 

 

 

 

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SophiaPretty
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Status NEW Posted 20 Dec 2017 12:12 PM My Price 10.00

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