Operating System Multiple choice Questions and Answers-OS Basics

51.	When did IBM released the first version of its disk operating system DOS version 1.0 ?
a.	1981
b.	1982
c.	1983
d.	1984

Discuss

Answer: (a).1981

52.	Which is not a function of Kernel ?
a.	Process management
b.	Memory management
c.	File system management
d.	All of Above

Discuss

Answer: (d).All of Above

53.	In real time OS, which is most suitable scheduling scheme
a.	round robin
b.	FCFS
c.	pre-emptive scheduling
d.	random scheduling

Discuss

Answer: (c).pre-emptive scheduling

54.	For multiprogramming operating system
a.	special support from processor is essential
b.	special support from processor is not essential
c.	cache memory is essential
d.	none of above

Discuss

Answer: (b).special support from processor is not essential

55.	Which is single user operating system
a.	MS-DOS
b.	UNIX
c.	XENIX
d.	LINUX

Discuss

Answer: (a).MS-DOS

56.	Which operating system reacts in the actual time
a.	Batch system
b.	Quick response system
c.	Real time system
d.	Time sharing system

Discuss

Answer: (c).Real time system

Discuss

Answer: (b).AU/X

58.	Which technique is used by operating systems to execute several programs concurrently by switching back and forth
a.	Partitioning
b.	Multitasking
c.	Windowing
d.	Paging

Discuss

Answer: (c).Windowing

59.	Multiprogramming systems
a.	Are easier to develop than single programming systems
b.	Execute each job faster
c.	Execute more jobs in the same time
d.	Are used only on large main frame computers

Discuss

Answer: (c).Execute more jobs in the same time

60.	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 above

Discuss

Answer: (c).A collection of software routines