CoCubes Operating Systems Question and Answers Quiz-1

Question 1

Time: 00:00:00
Which of the following refers to the associative memory?

A. The address of the data is generated by cpu

B. The address of the data is supplied by the users

C. There is no need for an address i.e. the data is used as an address

D. The data are accessed sequentially

the address of the data is generated by the CPU

the address of the data is generated by the CPU

the address of the data is supplied by the users

the address of the data is supplied by the users

there is no need for an address i.e. the data is used as an address

there is no need for an address i.e. the data is used as an address

the data are accessed sequentially

the data are accessed sequentially

None of the above

None of the above

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Question 2

Time: 00:00:00
To avoid the race condition, the number of processes that may be simultaneously inside their critical section is

8

8

1

1

16

16

0

0

None of the above

None of the above

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race around condition occurs when result of cooperating processes depends on the sequence of execution of statements. Shared part of the code is known as critical section and to avoid the wrong answer we protect the block using some mechanism and allows only 1 process to access that variable.

Question 3

Time: 00:00:00

The Register - to - Register (RR) instructions

have both their operands in the main store.

have both their operands in the main store.

which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also written into the specified storage location.

which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also written into the specified storage location.

which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.

which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.

all of the above

all of the above

None of the above

None of the above

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Question 4

Time: 00:00:00
The process of transferring data intended for a peripheral device into a disk (or intermediate store) so that it can be transferred to peripheral at a more convenient time or in bulk, is known as

multiprogramming

multiprogramming

spooling

spooling

caching

caching

virtual programming

virtual programming

None of the above

None of the above

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Question 5

Time: 00:00:00

A development strategy whereby the executive control modules of a system are coded and tested first, is known as

Bottom-up development

Bottom-up development

Top-down development

Top-down development

Left-Right development

Left-Right development

All of the above

All of the above

None of the above

None of the above

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Question 6

Time: 00:00:00
A disk scheduling algorithm in an operating system causes the disk arm to move back and forth across the disk surface in order to service all requests in its path. This is a

First come first served

First come first served

Shortest Seek Time First (SSTE)

Shortest Seek Time First (SSTE)

Scan

Scan

FIFO

FIFO

None of the above

None of the above

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Question 7

Time: 00:00:00
In analyzing the compilation of PL/I program, the description "resolving symbolic address (labels) and generating machine language" is associated with

Assembly and output

Assembly and output

Code generation

Code generation

Storage assignment

Storage assignment

Syntax analysis

Syntax analysis

None of the above

None of the above

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Question 8

Time: 00:00:00
If you do not know which version of MS-DOS you are working with, which command will you use after having booted your operating system?

FORMAT command

FORMAT command

DIR command

DIR command

VER command

VER command

DISK command

DISK command

None of the above

None of the above

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Question 9

Time: 00:00:00
The main function of the dispatcher (the portion of the process scheduler) is

swapping a process to the disk

swapping a process to the disk

assigning ready process to the CPU

assigning ready process to the CPU

suspending some of the processes when the CPU load is high

suspending some of the processes when the CPU load is high

bring processes from the disk to the main memory

bring processes from the disk to the main memory

None of the above

None of the above

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Question 10

Time: 00:00:00
In MS-DOS, relocatable object files and load modules have extensions

.OBJ and .COM or .EXE, respectively

.OBJ and .COM or .EXE, respectively

.COM and .OBJ, respectively

.COM and .OBJ, respectively

.EXE and .OBJ, respectively

.EXE and .OBJ, respectively

.DAS and .EXE, respectively

.DAS and .EXE, respectively

None of the above

None of the above

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