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OSG202 – HaiAnh Exam Practice Questions and Answers
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OSG202 – HaiAnh Exam Practice Questions and Answers Which of the following statements about the CPU's handling interrupts is incorrect? * None of the other choices The CPU branches to a new instruction sequence The hardware saves the old PC location The processor ceases to execute the curre...

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  • October 30, 2024
  • 181
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • osg202 haianh exam practice questions and answer

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  • OSG 202

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©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




OSG202 – HaiAnh Exam Practice

Questions and Answers


Which of the following statements about the CPU's handling interrupts is incorrect? *


None of the other choices


The CPU branches to a new instruction sequence


The hardware saves the old PC location


The processor ceases to execute the current sequence of instructions - ANSWER✔✔-None of the other

choices


____ is the partitioning of a single server, each of which can support a different operating *


Multiprocessing


Multithreading


Shared processing


Virtualization - ANSWER✔✔-D



Page 1/181

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FIRST PUBLISH OCTOBER 2024




Consider a computer system that has cache memory, main memory (RAM) and disk, and OS uses virtual

memory. It takes 1 nsec to access a word from the cache, 10 nsec to access a word from RAM, and 10

msec to access a word from the disk. If the cache hit rate is 95% and main memory hit rate is 99%, what

is average time to access a word? *


a. 1.445 nsec


b. 5,001.445 nsec


c. 5,000.495 nsec


d. 5,000.95 nsec - ANSWER✔✔-B


Booting a general purpose computer involves the following steps except *


a. Loading the OS


b. Loading the command interpreter


c. Loading one or more bootstrap loaders


d. Execution of a ROM-based POST sequence - ANSWER✔✔-B


As one proceeds down the memory hierarchy (from inboard memory to offline storage), which of the

following conditions is correct? *


Decreasing access time

Page 2/181

, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




None of the other choices


Decreasing cost per bit


Decreasing capacity - ANSWER✔✔-C


The two basic types of processor registers are: *


User-visible and user-invisible registers


None of the other choices


Control and Status registers


General and special registers - ANSWER✔✔-D


Consider a computer system that has cache memory, main memory (RAM) and disk, and OS uses virtual

memory. It takes 2 nsec to access a byte from the cache, 20 nsec to access a byte from RAM, and 10

msec to access a block of 1000 bytes from the disk. If a book has 1000 pages, each with 50 lines of 80

characters each, How long it will take to electronically scan the text for the case of the master copy being

in each of the level as one proceeds down the memory hierarchy (from inboard memory to offline

storage)? *


1 msec, 10 msec, 5 sec


1 msec, 10 msec, 10 sec



Page 3/181

, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




2 msec, 20 msec, 10 sec


4 msec, 40 msec, 20 sec - ANSWER✔✔-D


The main characteristics of layered system does not include: *


A. Upper layer can only call functions of closely lower layer


B. Each layer has well defined functions


C. Each layer runs independently


D. Many layers - ANSWER✔✔-C


Which of special register in the CPU points to the top of the current stack in the memory? *


PC


PSW


IR


SP - ANSWER✔✔-D


A CPU may have multiple execution units, so that can carry out multiple instructions in the same time is

called: *


0/1

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