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Frequently Asked Operating System interview questions and answers for freshers Page 4

(#M40018993) OPERATING SYSTEM QUESTION Operating System Questions Keep an EYE

Give an example of microkernel.

Asked In Operating System (12 years ago)

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(#M40029501) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is a drawback of MVT?
1) ability to support multiple processors
2) virtual storage
3) source level debugging

Asked In Operating System MAN (12 years ago)

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(#M40153632) OPERATING SYSTEM QUESTION scheduling Keep an EYE

a computer memory is composed of 16k words of 8bits

Asked In Operating System kowsalya (10 years ago)

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(#M40029475) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is a daemon?

A. Daemon is a program that runs in the background without user's interaction. A daemon runs in a multitasking operating system like UNIX. A daemon is initiated and controlled by special programs known as 'processes'.

Asked In Operating System MAN (12 years ago)

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(#M40029486) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What are the different types of Real-Time Scheduling?

A. Hard real-time systems required to complete a critical task within a guaranteed amount of time.
Soft real-time computing requires that critical processes receive priority over less fortunate ones.

Asked In Operating System MAN (12 years ago)

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(#M40018974) OPERATING SYSTEM QUESTION Operating System Questions Keep an EYE

Explain briefly about, processor,
assembler, compiler, loader, linker and the functions
executed by them.

Asked In Operating System (12 years ago)

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(#M40018989) OPERATING SYSTEM QUESTION Operating System Questions Keep an EYE

 If two processes which shares same
system memory and system clock in a distributed system,
What is it called?

Asked In Operating System (12 years ago)

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(#M40029484) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is dual-mode operation?

A. In order to protect the operating systems and the system programs from the malfunctioning programs
the two mode operations were evolved
System mode
User mode

Asked In Operating System MAN (12 years ago)

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(#M40029470) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is cache-coherency?

A. In a multiprocessor system there exist several caches each may containing a copy of same variable A. Then a change in one cache should immediately be reflected in all other caches this process of maintaining the same value of a data in all the caches s called cache-coherency.

Asked In Operating System MAN (12 years ago)

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(#M40029503) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is 'inode'?

A. All UNIX files have its description stored in a structure called 'inode'. The inode contains info about the file-size, its location, time of last access, time of last modification, permission and so on. Directories are also represented as files and have an associated inode. In addition to descriptions about the file, the inode contains pointers to the data blocks of the file. If the file is large, inode has indirect pointer to a block of pointers to additional data blocks (this further aggregates for larger files). A block is typically 8k.
Inode consists of the following fields:
File owner identifier
File type
File access permissions
File access times
Number of links
File size
Location of the file data

Asked In Operating System MAN (12 years ago)

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