1690 + Mcqs in Operating System Page 19 McqOptions

901.	During compaction time, other normal system operations _______ be permitted.
A.	Can
B.	Cannot
C.	is
D.	none of the mentioned
Answer» C. is

Discussion

902.	For processes to request access to file contents, they need to :
A.	they need to run a seperate program
B.	they need special interrupts
C.	implement the open and close system calls
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

903.	For each file there exists a ___________ that contains information about the file, including ownership, permissions and location of the file contents.
A.	metadata
B.	file control block
C.	process control block
D.	All of the mentioned
Answer» C. process control block

Discussion

904.	Metadata includes :
A.	all of the file system structure
B.	contents of files
C.	both file system structure and contents of files
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

905.	The file organization module knows about :
A.	files
B.	logical blocks of files
C.	physical blocks of files
D.	all of the mentioned
Answer» E.

Discussion

906.	A device driver can be thought of as a translator. Its input consists of _____ commands and output consists of _______ instructions.
A.	high level, low level
B.	low level, high level
C.	complex, simple
D.	low level, complex
Answer» B. low level, high level

Discussion

907.	If too little space is allocated to a file
A.	the file will not work
B.	there will not be any space for the data, as the FCB takes it all
C.	the file cannot be extended
D.	the file cannot be opened
Answer» D. the file cannot be opened

Discussion

908.	To solve the problem of external fragmentation, ________ needs to be done periodically.
A.	compaction
B.	check
C.	formatting
D.	replacing memory
Answer» B. check

Discussion

909.	The first fit and best fit algorithms suffer from :
A.	internal fragmentation
B.	external fragmentation
C.	starvation
D.	all of the mentioned
Answer» C. starvation

Discussion

910.	_______ and ________ are the most common strategies used to select a free hole from the set of available holes.
A.	First fit, Best fit
B.	Worst fit, First fit
C.	Best fit, Worst fit
D.	None of the mentioned
Answer» B. Worst fit, First fit

Discussion

911.	One difficulty of contiguous allocation is :
A.	finding space for a new file
B.	inefficient
C.	costly
D.	time taking
Answer» B. inefficient

Discussion

912.	Contiguous allocation of a file is defined by :
A.	disk address of the first block & length
B.	length & size of the block
C.	size of the block
D.	total size of the file
Answer» B. length & size of the block

Discussion

913.	The real disadvantage of a linear list of directory entries is the :
A.	size of the linear list in memory
B.	linear search to find a file
C.	it is not reliable
D.	all of the mentioned
Answer» C. it is not reliable

Discussion

914.	The VFS (virtual file system) activates file system specific operations to handle local requests according to their _______
A.	size
B.	commands
C.	timings
D.	file system types
Answer» E.

Discussion

915.	On systems where there are multiple operating system, the decision to load a particular one is done by :
A.	boot loader
B.	bootstrap
C.	process control block
D.	file control block
Answer» B. bootstrap

Discussion

916.	In indexed allocation :
A.	each file must occupy a set of contiguous blocks on the disk
B.	each file is a linked list of disk blocks
C.	all the pointers to scattered blocks are placed together in one location
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

917.	In linked allocation :
A.	each file must occupy a set of contiguous blocks on the disk
B.	each file is a linked list of disk blocks
C.	all the pointers to scattered blocks are placed together in one location
D.	none of the mentioned
Answer» C. all the pointers to scattered blocks are placed together in one location

Discussion

918.	In contiguous allocation :
A.	each file must occupy a set of contiguous blocks on the disk
B.	each file is a linked list of disk blocks
C.	all the pointers to scattered blocks are placed together in one location
D.	none of the mentioned
Answer» B. each file is a linked list of disk blocks

Discussion

919.	The three major methods of allocating disk space that are in wide use are :
A.	contiguous
B.	linked
C.	indexed
D.	all of the mentioned
Answer» E.

Discussion

920.	Disks are segmented into one or more partitions, each containing a file system or ______
A.	left ‘raw’
B.	made into swap space
C.	made into backup space
D.	left ‘ripe’
Answer» B. made into swap space

Discussion

921.	In UNIX, the directory protection is handled _________ to the file protection.
A.	different
B.	similar
C.	it is not handled at all
D.	none of the mentioned
Answer» C. it is not handled at all

Discussion

922.	In a multi level directory structure :
A.	the same previous techniques will be used as in the other structures
B.	a mechanism for directory protection will have to applied
C.	the subdirectories do not need protection once the directory is protected
D.	none of the mentioned
Answer» C. the subdirectories do not need protection once the directory is protected

Discussion

923.	If each access to a file is controlled by a password, then the disadvantage is that :
A.	user will need to remember a lot of passwords
B.	it is not reliable
C.	it is not efficient
D.	all of the mentioned
Answer» B. it is not reliable

Discussion

924.	To control access the three bits used in UNIX are represented by :
A.	r
B.	w
C.	x
D.	all of the mentioned
Answer» E.

Discussion

925.	In UNIX, groups can be created and modified by :
A.	superuser
B.	any user
C.	a programmer only
D.	the people in the group only
Answer» B. any user

Discussion

926.	Universe consists of :
A.	all users that aren’t included in the group or owners
B.	all users that are not owners
C.	all users in the system
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

927.	All users in a group get _______ access to a file.
A.	different
B.	similar
C.	same
D.	none of the mentioned
Answer» C. same

Discussion

928.	Many systems recognize three classifications of users in connection with each file (to condense the access control list) :
A.	Owner
B.	Group
C.	Universe
D.	All of the mentioned
Answer» E.

Discussion

929.	The main problem with access control lists is :
A.	their maintenance
B.	their length
C.	their permissions
D.	All of the mentioned
Answer» C. their permissions

Discussion

930.	Protection is only provided at the _____ level.
A.	lower
B.	central
C.	higher
D.	none of the mentioned
Answer» B. central

Discussion

931.	Reliability of files can be increased by :
A.	keeping the files safely in the memory
B.	making a different partition for the files
C.	by keeping them in external storage
D.	by keeping duplicate copies of the file
Answer» E.

Discussion

932.	The series of accesses between the open and close operations is a :
A.	transaction
B.	procedure
C.	program
D.	file session
Answer» E.

Discussion

933.	To recover from failures in the network operations, ______ information may be maintained.
A.	ip address
B.	state
C.	stateless
D.	operating system
Answer» C. stateless

Discussion

934.	Domain name system provides :
A.	host-name-to-network-address translations for the entire internet
B.	network-address-to-host-name translations for the entire internet
C.	binary to hex translations for the entire internet
D.	all of the mentioned
Answer» B. network-address-to-host-name translations for the entire internet

Discussion

935.	Distributed naming services/Distributed information systems have been devised to :
A.	provide information about all the systems
B.	provide unified access to the information needed for remote computing
C.	provide unique names to all systems in a network
D.	all of the mentioned
Answer» C. provide unique names to all systems in a network

Discussion

936.	The machine containing the files is the _______ and the machine wanting to access the files is the ______
A.	master, slave
B.	memory, user
C.	server, client
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

937.	Anonymous access allows a user to transfer files :
A.	without having an account on the remote system
B.	only if he accesses the system with a guest account
C.	only if he has an account on the remote system
D.	none of the mentioned
Answer» B. only if he accesses the system with a guest account

Discussion

938.	In the world wide web, a ____ is needed to gain access to the remote files, and separate operations are used to transfer files.
A.	laptop
B.	plugin
C.	browser
D.	player
Answer» D. player

Discussion

939.	In distributed file system, ______ directories are visible from the local machine.
A.	protected
B.	local
C.	private
D.	remote
Answer» E.

Discussion

940.	A process _____ lower the priority of another process, if both are owned by the same owner.
A.	must
B.	can
C.	cannot
D.	none of the mentioned
Answer» C. cannot

Discussion

941.	In UNIX, exactly which operations can be executed by group members and other users is definable by :
A.	the group’s head
B.	the file’s owner
C.	the file’s permissions
D.	all of the mentioned
Answer» C. the file’s permissions

Discussion

942.	When a file system is mounted over a directory that is not empty :
A.	the system may not allow the mount
B.	the system must allow the mount
C.	the system may allow the mount and the directory’s existing files will then be made obscure
D.	all of the mentioned
Answer» D. all of the mentioned

Discussion

943.	A mount point is :
A.	an empty directory at which the mounted file system will be attached
B.	a location where every time file systems are mounted
C.	is the time when the mounting is done
D.	none of the mentioned
Answer» B. a location where every time file systems are mounted

Discussion

944.	When a cycle exists, the reference count maybe non zero, even when it is no longer possible to refer to a directory or file, due to _______
A.	the possibility of one hidden reference
B.	the possibility of two hidden references
C.	the possibility of self referencing
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

945.	When keeping a list of all the links/references to a file, and the list is empty, implies that :
A.	the file has no copies
B.	the file is deleted
C.	the file is hidden
D.	none of the mentioned
Answer» C. the file is hidden

Discussion

946.	The deletion of a link, ________ the original file.
A.	deletes
B.	affects
C.	does not affect
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

947.	The operating system _______ the links when traversing directory trees, to preserve the acyclic structure of the system.
A.	considers
B.	ignores
C.	deletes
D.	none of the mentioned
Answer» C. deletes

Discussion

948.	In UNIX, a link is :
A.	a directory entry
B.	a pointer to another file or subdirectory
C.	implemented as an absolute or relative path name
D.	all of the mentioned
Answer» E.

Discussion

949.	With a shared file :
A.	actual file exists
B.	there are two copies of the file
C.	the changes made by one person are not reflected to the other
D.	the changes made by one person are reflected to the other
Answer» E.

Discussion

950.	A tree structure ______ the sharing of files and directories.
A.	allows
B.	may restrict
C.	restricts
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

Explore topic-wise MCQs in Technical Programming.

During compaction time, other normal system operations _______ be permitted.

For processes to request access to file contents, they need to :

For each file there exists a ___________ that contains information about the file, including ownership, permissions and location of the file contents.

Metadata includes :

The file organization module knows about :

A device driver can be thought of as a translator. Its input consists of _____ commands and output consists of _______ instructions.

If too little space is allocated to a file

To solve the problem of external fragmentation, ________ needs to be done periodically.

The first fit and best fit algorithms suffer from :

_______ and ________ are the most common strategies used to select a free hole from the set of available holes.

One difficulty of contiguous allocation is :

Contiguous allocation of a file is defined by :

The real disadvantage of a linear list of directory entries is the :

The VFS (virtual file system) activates file system specific operations to handle local requests according to their _______

On systems where there are multiple operating system, the decision to load a particular one is done by :

In indexed allocation :

In linked allocation :

In contiguous allocation :

The three major methods of allocating disk space that are in wide use are :

Disks are segmented into one or more partitions, each containing a file system or ______

In UNIX, the directory protection is handled _________ to the file protection.

In a multi level directory structure :

If each access to a file is controlled by a password, then the disadvantage is that :

To control access the three bits used in UNIX are represented by :

In UNIX, groups can be created and modified by :

Universe consists of :

All users in a group get _______ access to a file.

Many systems recognize three classifications of users in connection with each file (to condense the access control list) :

The main problem with access control lists is :

Protection is only provided at the _____ level.

Reliability of files can be increased by :

The series of accesses between the open and close operations is a :

To recover from failures in the network operations, ______ information may be maintained.

Domain name system provides :

Distributed naming services/Distributed information systems have been devised to :

The machine containing the files is the _______ and the machine wanting to access the files is the ______

Anonymous access allows a user to transfer files :

In the world wide web, a ____ is needed to gain access to the remote files, and separate operations are used to transfer files.

In distributed file system, ______ directories are visible from the local machine.

A process _____ lower the priority of another process, if both are owned by the same owner.

In UNIX, exactly which operations can be executed by group members and other users is definable by :

When a file system is mounted over a directory that is not empty :

A mount point is :

When a cycle exists, the reference count maybe non zero, even when it is no longer possible to refer to a directory or file, due to _______

When keeping a list of all the links/references to a file, and the list is empty, implies that :

The deletion of a link, ________ the original file.

The operating system _______ the links when traversing directory trees, to preserve the acyclic structure of the system.

In UNIX, a link is :

With a shared file :

A tree structure ______ the sharing of files and directories.

A device driver can be thought of as a translator. Its input consists of _ commands and output consists of ___ instructions.

_ and __ are the most common strategies used to select a free hole from the set of available holes.

The machine containing the files is the _ and the machine wanting to access the files is the