1690 + Mcqs in Operating System Page 25 McqOptions

1201.	What does Light Directory Access Protocol (LDAP) doesn’t store ?
A.	Users
B.	Address
C.	Passwords
D.	Security Keys
Answer» C. Passwords

Discussion

1202.	Why is one time password safe ?
A.	It is easy to generated
B.	It cannot be shared
C.	It is different for every access
D.	It is a complex encrypted password
Answer» D. It is a complex encrypted password

Discussion

1203.	Which of the following is a strong password ?
A.	19thAugust88
B.	Delhi88
C.	P@assw0rd
D.	!augustdelhi
Answer» D. !augustdelhi

Discussion

1204.	Which of the following is least secure method of authentication ?
A.	Key card
B.	fingerprint
C.	retina pattern
D.	Password
Answer» E.

Discussion

1205.	What is not a good practice for user administration ?
A.	Isolating a system after a compromise
B.	Perform random auditing procedures
C.	Granting privileges on a per host basis
D.	Using telnet and FTP for remote access
Answer» E.

Discussion

1206.	Which of the following is a good practice ?
A.	Give full permission for remote transferring
B.	Grant read only permission
C.	Grant limited permission to specified account
D.	Give both read and write permission but not execute
Answer» D. Give both read and write permission but not execute

Discussion

1207.	From the following, which is not a common file permission ?
A.	writetoDisk()
B.	Execute
C.	Stop
D.	Read
Answer» D. Read

Discussion

1208.	What are common security threats ?
A.	File Shredding
B.	File sharing and permission
C.	File corrupting
D.	File integrity
Answer» C. File corrupting

Discussion

1209.	Which of the following are forms of malicious attack ?
A.	Theft of information
B.	Modification of data
C.	Wiping of information
D.	All of the mentioned
Answer» E.

Discussion

1210.	To let a client have random access to a media stream :
A.	the protocol used must not be stateless
B.	the server must support download
C.	the stream should give access rights to the client
D.	all of the mentioned
Answer» B. the server must support download

Discussion

1211.	The difficulty with multicasting from a practical point of view is :
A.	memory allocation is difficult
B.	server must establish a separate unicast session for each client
C.	the routers must support multicasting
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

1212.	The problem with unicast delivery is that the :
A.	memory allocation is difficult
B.	server must establish a separate unicast session for each client
C.	the routers must support unicasting
D.	the clients must be close to the server
Answer» C. the routers must support unicasting

Discussion

1213.	RTP stands for :
A.	real time protocol
B.	real time transmission control protocol
C.	real time transmission protocol
D.	real time transport protocol
Answer» E.

Discussion

1214.	In the TEARDOWN state :
A.	the server breaks down the connection and releases the resources allocated for the session
B.	the client breaks down the connection and releases the resources allocated for the session
C.	the system crashes
D.	none of the mentioned
Answer» B. the client breaks down the connection and releases the resources allocated for the session

Discussion

1215.	In the SETUP state :
A.	the server is setup
B.	the client is setup
C.	the server allocates resources for the client session
D.	the client sends requests to the server
Answer» D. the client sends requests to the server

Discussion

1216.	RTSP includes the following states :
A.	SETUP
B.	PLAY
C.	PAUSE
D.	All of the mentioned
Answer» E.

Discussion

1217.	HTTP is __________
A.	a stateful protocol
B.	a stateless protocol
C.	a protocol that maintains the status of its connection with the client
D.	a stateless protocol that does not maintain the status of its connection with the client
Answer» E.

Discussion

1218.	RTSP stands for :
A.	Real Time Streaming Policy
B.	Real Time Streaming Protocol
C.	Real Time Systems Protocol
D.	Read Time Streaming Policy
Answer» C. Real Time Systems Protocol

Discussion

1219.	Multicasting delivers the content to :
A.	a single client
B.	all clients, regardless whether they want the content or not
C.	a group of receivers who indicate they wish to receive the content
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

1220.	Broadcasting delivers the content to :
A.	a single client
B.	all clients, regardless whether they want the content or not
C.	a group of receivers who indicate they wish to receive the content
D.	none of the mentioned
Answer» C. a group of receivers who indicate they wish to receive the content

Discussion

1221.	Unicasting delivers the content to :
A.	a single client
B.	all clients, regardless whether they want the content or not
C.	a group of receivers who indicate they wish to receive the content
D.	none of the mentioned
Answer» B. all clients, regardless whether they want the content or not

Discussion

1222.	The three general methods for delivering content from a server to a client across a network are :
A.	unicasting
B.	multicasting
C.	broadcasting
D.	all of the mentioned
Answer» E.

Discussion

1223.	In SCAN – EDF, requests with the same deadlines are ordered according to :
A.	SCAN policy
B.	EDF policy
C.	FCFS policy
D.	FIFO policy
Answer» B. EDF policy

Discussion

1224.	The EDF scheduler uses ________ to order requests according to their deadlines.
A.	stack
B.	disks
C.	queue
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

1225.	Multimedia systems require _________ scheduling to ensure critical tasks will be serviced within timing deadlines.
A.	soft real time
B.	hard real time
C.	normal
D.	none of the mentioned
Answer» C. normal

Discussion

1226.	If several requests have different deadlines that are relatively close together, then using the SCAN – EDF algorithm :
A.	the SCAN ordering will service the requests in that batch
B.	the EDF ordering will service the requests in that batch
C.	the FCFS ordering will service the requests in that batch
D.	none of the mentioned
Answer» B. the EDF ordering will service the requests in that batch

Discussion

1227.	The hybrid algorithm that combines EDF with SCAN algorithm is known as :
A.	EDS
B.	SDF
C.	SCAN-EDF
D.	None of the mentioned
Answer» D. None of the mentioned

Discussion

1228.	Servicing requests strictly according to deadline using EDF may result in :
A.	lower seek times
B.	lower bandwidth
C.	higher seek time
D.	higher bandwidth
Answer» C. higher seek time

Discussion

1229.	As disks have relatively low transfer rates and relatively high latency rates, disk schedulers must reduce latency times to :
A.	ensure high bandwidth
B.	ensure low bandwidth
C.	make sure data is transferred
D.	reduce data transfer speeds
Answer» B. ensure low bandwidth

Discussion

1230.	The priority of a process will ______________ if the scheduler assigns it a static priority.
A.	change
B.	remain unchanged
C.	depends on the operating system
D.	none of the mentioned
Answer» C. depends on the operating system

Discussion

1231.	A scheduling algorithm can use either ___________ priority or ________ priority.
A.	static, still
B.	static, dynamic
C.	live, dead
D.	none of the mentioned
Answer» C. live, dead

Discussion

1232.	An admission control scheme assigns a __________ to each type of resource.
A.	processor
B.	memory location
C.	resource manager
D.	all of the mentioned
Answer» D. all of the mentioned

Discussion

1233.	Admission control is :
A.	the delay that occurs during playback of the stream
B.	the practice of admitting a request for service only if the server has sufficient resources to satisfy the request
C.	how the errors are handled during transmission and processing of continuous media
D.	none of the mentioned
Answer» C. how the errors are handled during transmission and processing of continuous media

Discussion

1234.	Delay is :
A.	the time from when a request is first submitted to when the desired result is produced
B.	the delay that occurs during playback of the stream
C.	how the errors are handled during transmission and processing of continuous media
D.	none of the mentioned
Answer» B. the delay that occurs during playback of the stream

Discussion

1235.	Delay and Jitter :
A.	mean the same thing
B.	are two completely different things
C.	all of the mentioned
D.	none of the mentioned
Answer» C. all of the mentioned

Discussion

1236.	The factors that define QoS are :
A.	Throughput
B.	Jitter
C.	Delay
D.	All of the mentioned
Answer» E.

Discussion

1237.	The quality of service requirements are guaranteed in :
A.	Best effort service
B.	Soft QoS
C.	Worst effort service
D.	Hard QoS
Answer» E.

Discussion

1238.	The level that treats different types of traffics in different ways, giving certain traffic streams higher priority than other streams and with best efforts, but no guarantees are made :
A.	Best effort service
B.	Soft QoS
C.	Worst effort service
D.	Hard QoS
Answer» C. Worst effort service

Discussion

1239.	The three levels in QoS are :
A.	Best effort service
B.	Soft QoS
C.	Hard QoS
D.	All of the mentioned
Answer» E.

Discussion

1240.	MPEG compression :
A.	stores the compression values of each frame
B.	stores the differences between successive frames
C.	stores multiple frames’ values together
D.	none of the mentioned
Answer» C. stores multiple frames’ values together

Discussion

1241.	The full form of MPEG is :
A.	Motion Pictures Engineering Group
B.	Motion Picture Engineers Group
C.	Motion Picture Experts Group
D.	None of the mentioned
Answer» D. None of the mentioned

Discussion

1242.	Lossy techniques provide ___________ when compared to lossless techniques.
A.	lower compression ratios
B.	much higher compression ratios
C.	similar compression ratios
D.	none of the mentioned
Answer» C. similar compression ratios

Discussion

1243.	Lossy and lossless are classifications of :
A.	multimedia storage systems
B.	files
C.	compression algorithms
D.	all of the mentioned
Answer» D. all of the mentioned

Discussion

1244.	Compression ratio is the ratio of :
A.	the original file size to the size of the compressed file
B.	the number of pixels in a frame of the original size to those in a frame of the compressed file
C.	compressed file size to the original file size
D.	none of the mentioned
Answer» B. the number of pixels in a frame of the original size to those in a frame of the compressed file

Discussion

1245.	Once a file is compressed :
A.	it has a better quality
B.	it takes up less space for storage
C.	it cannot be delivered to the client more quickly
D.	none of the mentioned
Answer» C. it cannot be delivered to the client more quickly

Discussion

1246.	For QOS to be implemented properly :
A.	file systems must be efficient to meet the rate requirements of continuous media
B.	network protocols must support bandwidth requirements while minimizing delay and jitter
C.	all of the mentioned
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

1247.	For a computer to deliver continuous media it must guarantee the specific rate and timing requirements, also known as :
A.	deadline
B.	quality of service
C.	period
D.	burst time
Answer» C. period

Discussion

1248.	The streaming that takes place as the event is occurring is :
A.	live streaming
B.	dead streaming
C.	static streaming
D.	on demand streaming
Answer» E.

Discussion

1249.	Random access is not allowed in :
A.	live streaming
B.	dead streaming
C.	static streaming
D.	on demand streaming
Answer» B. dead streaming

Discussion

1250.	The two types of real time streaming are :
A.	live & on demand streaming
B.	dead & static streaming
C.	static & on demand streaming
D.	on demand streaming
Answer» B. dead & static streaming

Discussion

Explore topic-wise MCQs in Technical Programming.

What does Light Directory Access Protocol (LDAP) doesn’t store ?

Why is one time password safe ?

Which of the following is a strong password ?

Which of the following is least secure method of authentication ?

What is not a good practice for user administration ?

Which of the following is a good practice ?

From the following, which is not a common file permission ?

What are common security threats ?

Which of the following are forms of malicious attack ?

To let a client have random access to a media stream :

The difficulty with multicasting from a practical point of view is :

The problem with unicast delivery is that the :

RTP stands for :

In the TEARDOWN state :

In the SETUP state :

RTSP includes the following states :

HTTP is __________

RTSP stands for :

Multicasting delivers the content to :

Broadcasting delivers the content to :

Unicasting delivers the content to :

The three general methods for delivering content from a server to a client across a network are :

In SCAN – EDF, requests with the same deadlines are ordered according to :

The EDF scheduler uses ________ to order requests according to their deadlines.

Multimedia systems require _________ scheduling to ensure critical tasks will be serviced within timing deadlines.

If several requests have different deadlines that are relatively close together, then using the SCAN – EDF algorithm :

The hybrid algorithm that combines EDF with SCAN algorithm is known as :

Servicing requests strictly according to deadline using EDF may result in :

As disks have relatively low transfer rates and relatively high latency rates, disk schedulers must reduce latency times to :

The priority of a process will ______________ if the scheduler assigns it a static priority.

A scheduling algorithm can use either ___________ priority or ________ priority.

An admission control scheme assigns a __________ to each type of resource.

Admission control is :

Delay is :

Delay and Jitter :

The factors that define QoS are :

The quality of service requirements are guaranteed in :

The level that treats different types of traffics in different ways, giving certain traffic streams higher priority than other streams and with best efforts, but no guarantees are made :

The three levels in QoS are :

MPEG compression :

The full form of MPEG is :

Lossy techniques provide ___________ when compared to lossless techniques.

Lossy and lossless are classifications of :

Compression ratio is the ratio of :

Once a file is compressed :

For QOS to be implemented properly :

For a computer to deliver continuous media it must guarantee the specific rate and timing requirements, also known as :

The streaming that takes place as the event is occurring is :

Random access is not allowed in :

The two types of real time streaming are :

A scheduling algorithm can use either ___ priority or priority.