Online Computer Science Test - Operating Systems Concepts Test

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Total number of questions: 20.
Time allotted: 30 minutes.
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Which of the following are(is) Language Processor(s)

assembles

compilers

interpreters

All of the above

None of the above

[#]

What is the name given to the organized collection of software that controls the overall operation of a computer?

Working system

Peripheral system

Operating system

Controlling system

None of the above

[#]

Addressing structure

defines the fundamental method of determining effective operand addresses

are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.

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

all of the above

None of the above

[#]

The Register - to - Register (RR) instructions

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

all of the above

None of the above

[#]

In which way(s) a macro processor for assembly language can be implemented:

independent two-pass processor

independent one-pass processor

processor incorporated into pass 1 of a standard two-pass assembler

all of the above

None of the above

[#]

Which of the following is false about disk when compared to main memory?

non-volatile

longer storage capacity

lower price per bit

faster

None of the above

[#]

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

Shortest Seek Time First (SSTE)

Scan

FIFO

None of the above

[#]

What scheduling algorithm allows processes that are logical runnable to be temporarily suspended?

preemptive scheduling

non-preemptive scheduling

FIFO

FCFS

None of the above

[#]

Which of the following is not true about the memory management?

virtual memory is used only in multi-user systems

segmentation suffers from external fragmentation

paging suffers from internal fragmentation

segmented memory can be paged

None of the above

[#]

10.

Paging

is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.

consists of those addresses that may be generated by a processor during execution of a computation.

is a method of allocating processor time.

allows multiple programs to reside in separate areas of core at the time.

None of the above

[#]

11.

Round-robin scheduling

allows interactive tasks quicker access to the processor

is quite complex to implement

gives each task the same chance at the processor

allows processor-bound tasks more time in the processor

None of the above

[#]

12.

What is the initial value of the semaphore to allow only one of the many processes to enter their critical section?

None of the above

[#]

13.

A partitioned data set is most used for

a program or source library

storing program data

storing backup information

storing ISAM files

None of the above

[#]

14.

A base register table

allows the programmer to write base registers and displacements explicitly in the source program.

is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain.

allows multiple programs to reside in separate areas of core at the same time.

is a term that refers to the control programs of an operating system.

None of the above

[#]

15.

Special software to create a job queue is called a

Drive

Spooler

Interpreter

Linkage editor

None of the above

[#]

16.

Which of the following is true about pseudocode

A machine language

An assembly language

A high-level language

All of the above

None of the above

[#]

17.

Which of the following filename extension suggests that the file is a backup copy of another file?

TXT

COM

BAS

BAK

None of the above

[#]

18.

A compiler for a high-level language that runs on one machine and produces code for a different machine is called is

optimizing compiler

one pass compiler

cross compiler

multipass compiler

None of the above

[#]

19.

Which of following is/are the advantage(s) of modular programming?

The program is much easier to change

Modules can be reused in other programs

Easy debugging

Easy to compile

None of the above

[#]

20.

Relocation bits used by relocating loader are specified (generated) by

Relocating loader itself

Linker

Assembler or translator

Macro processor

None of the above

[#]

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Online Computer Science Test - Operating Systems Concepts Test

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