Indicate which, of the following, in not true about an interpreter

Interpreter is a kind of translator

Interpreter generates an object program from the source program

Interpreter is a kind of translator

Interpreter analyses each source statement every time it is to be executed

is quite different from the SCL interpreter

is usually the primary user interface

is a mnemonic form of machine language

is quite different from the SCL interpreter

The term "operating system" means

the way a computer operator works

a set of programs which controls computer working

the way a computer operator works

conversion of high level language into machine code

the way a floppy disk drive operates

synchronize critical resources to prevent contention

synchronize critical resources to prevent deadlock

synchronize critical resources to prevent contention

The command interpreter

is usually the primary user interface

is quite different from the SCL interpreter

The most common security failure is

too much emphasis on preventing physical access

insufficient technology used to prevent breaches

The function(s) of the Storage Assignment is (are)

to assign storage to all variables referenced in the source program.

to assign storage to all temporary locations that are necessary for intermediate results.

to assign storage to literals, and to ensure that the storage is allocate and appropriate locations are initialized.

A task in a blocked state

must still be placed in the run queues

is waiting for same temporarily unavailable resources

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

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.

Multiprogramming systems:

are used only on large mainframe computers

are easier to develop than single programming system

execute more jobs in the same time period

are used only on large mainframe computers

Which, of the following, is true for testing and debugging?

Testing detects the syntax errors in the program while debugging corrects those errors in the program

Testing checks for logical errors in the programs, while debugging is a process of correcting those errors in the program

Testing detects the syntax errors in the program while debugging corrects those errors in the program

Testing and debugging indicate the same thing

Daisy chain is a device for

interconnecting a number of devices to a number of controllers

connecting a number of controllers to a device

connecting a number of devices to a controller

interconnecting a number of devices to a number of controllers

The function(s) of file system is (are):

to provide complete file naming freedom to the users and to permit controlled sharing of files

to provide for long and short term storage of files with appropriate economic tradeoffs.

to provide security against loss of information due to system failure

A collection of hardware components

A collection of input-output devices

A collection of software routines

The total time to prepare a disk drive mechanism for a block of data to be read from it is

latency plus seek time plus transmission time

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

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.

cannot be used by private installations

is mostly used by public networks

is mostly used by financial networks

cannot be used by private installations

is not necessary, since data cannot be intercepted

A relocate program form is one which

can itself performs the relocation of its address-sensitive portions.

cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.

consists of a program and relevant information for its relocation.

can itself performs the relocation of its address-sensitive portions.

depends upon the size of the file

should be chosen to match the data characteristics

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

Shortest Seek Time First (SSTE)

Indicate which, of the following, is not true about Nassi-Shneiderman charts

These charts can represent three fundamental control structures

These charts are type of graphical design tool

These charts cannot represent CASE constructs

These charts can represent three fundamental control structures

Round-robin scheduling

allows processor-bound tasks more time in the processor

allows interactive tasks quicker access to the processor

gives each task the same chance at the processor

allows processor-bound tasks more time in the processor

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.

Which of the following is true for machine language.

Repeated execution of program segments

Depicting flow of data in a system

A sequence of instructions which, when followed properly, solves a problem

the language which communicates with the computer using only the binary digits 1 and 0.

Which of the following can be accesses by transfer vector approach of linking?

Data located in other procedures

Which of the following scheduling objectives should be applied to the following: the system should admit jobs to create a mix that will keep most devices busy

to balance resource utilization

Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because

they are available on magnetic tapes

they are initially stored on disk

they are available on magnetic tapes

they are partly in primary memory and partly on disk

Which of the following is not a characteristic of a daisy chaining priority control scheme?

it is relatively easy to add more devices to the chain

the failure of one device may affect other devices on the chain

the number of control lines is independent of the number of devices on the chain

227 + Mcqs in Operating Systems Concepts in Computer Science Page 2 McqOptions

51.	Indicate which, of the following, in not true about an interpreter
A.	Interpreter generates an object program from the source program
B.	Interpreter is a kind of translator
C.	Interpreter analyses each source statement every time it is to be executed
D.	All of the above
Answer» B. Interpreter is a kind of translator

52.	Assembler language
A.	is usually the primary user interface
B.	requires fixed-format commands
C.	is a mnemonic form of machine language
D.	is quite different from the SCL interpreter
Answer» D. is quite different from the SCL interpreter

53.	Which of the following system program forgoes the production of object code to generate absolute machine code and load it into the physical main storage location from which it will be executed immediately upon completion of the assembly?
A.	two pass assembler
B.	load-and-go assembler
C.	macroprocessor
D.	compiler
Answer» C. macroprocessor

55.	Semaphores
A.	synchronize critical resources to prevent deadlock
B.	synchronize critical resources to prevent contention
C.	are used to do I/O
D.	are used for memory management
Answer» B. synchronize critical resources to prevent contention

56.	The command interpreter
A.	is usually the primary user interface
B.	requires fixed format commands
C.	is menu drive
D.	is quite different from the SCL interpreter
Answer» B. requires fixed format commands

57.	The most common security failure is
A.	carelessness by users
B.	depending on passwords
C.	too much emphasis on preventing physical access
D.	insufficient technology used to prevent breaches
Answer» B. depending on passwords

58.	The principles of structured programming forbid the use of
A.	WHILE-DO
B.	GOTO
C.	IF-THEN-ELSE
D.	DO-WHILE
Answer» C. IF-THEN-ELSE

59.	A compiler for a high-level language that runs on one machine and produces code for a different machine is called is
A.	optimizing compiler
B.	one pass compiler
C.	cross compiler
D.	multipass compiler
Answer» D. multipass compiler

61.	A task in a blocked state
A.	is executable
B.	is running
C.	must still be placed in the run queues
D.	is waiting for same temporarily unavailable resources
Answer» E.

62.	Paging
A.	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.
B.	consists of those addresses that may be generated by a processor during execution of a computation.
C.	is a method of allocating processor time.
D.	allows multiple programs to reside in separate areas of core at the time.
Answer» B. consists of those addresses that may be generated by a processor during execution of a computation.

63.	System programs such as Compilers are designed so that they are
A.	reenterable
B.	non reusable
C.	serially usable
D.	recursive
Answer» B. non reusable

65.	What problem is solved by Dijkstra's banker's algorithm?
A.	mutual exclusion
B.	deadlock recovery
C.	deadlock avoidance
D.	cache coherence
Answer» D. cache coherence

73.	Object modules generated by assemblers that contain unresolved external references are resolved for two or more object modules by a/an
A.	operating system
B.	loader
C.	linker
D.	compiler
Answer» D. compiler

80.	The computational technique used to compute the disk storage address of individual records is called:
A.	bubble memory
B.	key fielding
C.	dynamic reallocation
D.	hashing
Answer» E.

81.	In a magnetic disk, data is recorded in a set of concentric tracks which are subdivided into
A.	periods
B.	sectors
C.	zones
D.	groups
Answer» C. zones

64.	Multiprogramming systems:
A.	are easier to develop than single programming system
B.	execute each job faster
C.	execute more jobs in the same time period
D.	are used only on large mainframe computers
Answer» D. are used only on large mainframe computers

69.	Operating system is
A.	A collection of hardware components
B.	A collection of input-output devices
C.	A collection of software routines
D.	All of the above
Answer» D. All of the above

70.	The total time to prepare a disk drive mechanism for a block of data to be read from it is
A.	latency
B.	latency plus transmission time
C.	latency plus seek time
D.	latency plus seek time plus transmission time
Answer» D. latency plus seek time plus transmission time

71.	Addressing modes
A.	defines the fundamental method of determining effective operand addresses
B.	are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
C.	performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
D.	all of the above
Answer» C. performs indicated operations on two fast registers of the machine and leave the result in one of the registers.

72.	With MS-DOS which command will divide the surface of the blank floppy disk into sectors and assign a unique address to each one?
A.	FORMAT command
B.	FAT command
C.	VER command
D.	CHKDSK command
Answer» B. FAT command

74.	Data encryption
A.	is mostly used by public networks
B.	is mostly used by financial networks
C.	cannot be used by private installations
D.	is not necessary, since data cannot be intercepted
Answer» C. cannot be used by private installations

75.	Which of the following is characteristic of an operating system?
A.	resource management
B.	error recovery
C.	memory management
D.	All the above
Answer» E.

77.	File record length
A.	should always be fixed
B.	Should always be variable
C.	depends upon the size of the file
D.	should be chosen to match the data characteristics
Answer» E.

78.	A translator is best described as
A.	an application software
B.	a system software
C.	a hardware component
D.	all of the above
Answer» C. a hardware component

79.	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
A.	First come first served
B.	Shortest Seek Time First (SSTE)
C.	Scan
D.	FIFO
Answer» D. FIFO

Explore topic-wise MCQs in Computer Science.

Indicate which, of the following, in not true about an interpreter

Assembler language

Which of the following system program forgoes the production of object code to generate absolute machine code and load it into the physical main storage location from which it will be executed immediately upon completion of the assembly?

The term "operating system" means

Semaphores

The command interpreter

The most common security failure is

The principles of structured programming forbid the use of

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

The function(s) of the Storage Assignment is (are)

A task in a blocked state

Paging

System programs such as Compilers are designed so that they are

Multiprogramming systems:

What problem is solved by Dijkstra's banker's algorithm?

Which, of the following, is true for testing and debugging?

Daisy chain is a device for

The function(s) of file system is (are):

Operating system is

The total time to prepare a disk drive mechanism for a block of data to be read from it is

Addressing modes

With MS-DOS which command will divide the surface of the blank floppy disk into sectors and assign a unique address to each one?

Object modules generated by assemblers that contain unresolved external references are resolved for two or more object modules by a/an

Data encryption

Which of the following is characteristic of an operating system?

A relocate program form is one which

File record length

A translator is best described as

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

The computational technique used to compute the disk storage address of individual records is called:

In a magnetic disk, data is recorded in a set of concentric tracks which are subdivided into

Two basic types of operating systems are:

Indicate which, of the following, is not true about Nassi-Shneiderman charts

Round-robin scheduling

The operating system of a computer serves as a software interface between the user and

A file organization component of a VSAM file is:

Multiprogramming

All the time a computer is switched on, its operating system software has to stay in

Information in a memory that is no longer valid or wanted is known as

Which policy replace a page if it is not in the favoured subset of a process's pages?

A partitioned data set is most used for

Which of the following is true for machine language.

The technique, for sharing the time of a computer among several jobs. Which switches jobs so rapidly such that each job appears to have the computer to itself:

Which of the following can be accesses by transfer vector approach of linking?

Which of the following scheduling objectives should be applied to the following: the system should admit jobs to create a mix that will keep most devices busy

Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because

Which is a permanent database in the general model of compiler?

Which of the following is not a characteristic of a daisy chaining priority control scheme?

Software that measures, monitors, analyzes, and controls real-world events is called:

In which of the storage placement strategies a program is placed in the smallest available hole in the main memory?

82.	Two basic types of operating systems are:
A.	sequential and direct
B.	batch and timesharing
C.	sequential and realtime
D.	batch and interactive.
Answer» E.

84.	Round-robin scheduling
A.	allows interactive tasks quicker access to the processor
B.	is quite complex to implement
C.	gives each task the same chance at the processor
D.	allows processor-bound tasks more time in the processor
Answer» D. allows processor-bound tasks more time in the processor

85.	The operating system of a computer serves as a software interface between the user and
A.	hardware
B.	peripheral
C.	memory
D.	screen
Answer» B. peripheral

86.	A file organization component of a VSAM file is:
A.	relative record data set
B.	keyed sequential data set
C.	entry sequential data set
D.	all of the above
Answer» E.

88.	All the time a computer is switched on, its operating system software has to stay in
A.	main storage
B.	primary storage
C.	floppy disk
D.	disk drive
Answer» C. floppy disk

89.	Information in a memory that is no longer valid or wanted is known as
A.	non-volatile
B.	volatile
C.	surplus
D.	garbage
Answer» E.

90.	Which policy replace a page if it is not in the favoured subset of a process's pages?
A.	FIFO
B.	LRU
C.	LFU
D.	Working set
Answer» E.

91.	A partitioned data set is most used for
A.	a program or source library
B.	storing program data
C.	storing backup information
D.	storing ISAM files
Answer» B. storing program data

93.	The technique, for sharing the time of a computer among several jobs. Which switches jobs so rapidly such that each job appears to have the computer to itself:
A.	time sharing
B.	time out
C.	time domain
D.	FIFO
Answer» B. time out

94.	Which of the following can be accesses by transfer vector approach of linking?
A.	External data segments
B.	External subroutines
C.	Data located in other procedures
D.	All of the above
Answer» C. Data located in other procedures