Operating System MCQ Set 1
1. To schedule the processes, they are considered ___
a) infinitely long
b) periodic
c) heavy weight
d) light weight
Answer
Answer: b [Reason:] None.
2. If the period of a process is ‘p’, then the rate of the task is :
a) p2
b) 2*p
c) 1/p
d) p
Answer
Answer: c [Reason:] None.
3. The scheduler admits a process using :
a) two phase locking protocol
b) admission control algorithm
c) busy wait polling
d) none of the mentioned
Answer
Answer: c [Reason:] None.
4. The ______ scheduling algorithm schedules periodic tasks using a static priority policy with preemption.
a) earliest deadline first
b) rate monotonic
c) first cum first served
d) priority
Answer
Answer: b [Reason:] None.
5. Rate monotonic scheduling assumes that the :
a) processing time of a periodic process is same for each CPU burst
b) processing time of a periodic process is different for each CPU burst
c) periods of all processes is the same
d) none of the mentioned
Answer
Answer: a [Reason:] None.
6. In rate monotonic scheduling, a process with a shorter period is assigned :
a) a higher priority
b) a lower priority
c) higher & lower priority
d) none of the mentioned
Answer
Answer: a [Reason:] None.
7. There are two processes P1 and P2, whose periods are 50 and 100 respectively. P1 is assigned higher priority than P2. The processing times are t1 = 20 for P1 and t2 = 35 for P2. Is it possible to schedule these tasks so that each meets its deadline using Rate monotonic scheduling ?
a) yes
b) no
c) maybe
d) none of the mentioned
Answer
Answer: a [Reason:] None.
8. If a set of processes cannot be scheduled by rate monotonic scheduling algorithm, then :
a) they can be scheduled by EDF algorithm
b) they cannot be scheduled by EDF algorithm
c) they cannot be scheduled by any other algorithm
d) none of the mentioned
Answer
Answer: c [Reason:] None.
9. A process P1 has a period of 50 and a CPU burst of t1 = 25, P2 has a period of 80 and a CPU burst of 35. The total CPU utilization is :
a) 0.90
b) 0.74
c) 0.94
d) 0.80
Answer
Answer: c [Reason:] None.
10. Can the processes in the previous question be scheduled without missing the deadlines ?
a) Yes
b) No
c) Maybe
d) None of the mentioned
Answer
Answer: b [Reason:] None.
Operating System MCQ Set 2
1. A scheduling algorithm can use either _____ priority or ________ priority.
a) static, still
b) static, dynamic
c) live, dead
d) none of the mentioned
Answer
Answer: b [Reason:] None.
2. 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
Answer: b [Reason:] None.
3. 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
Answer: a [Reason:] None.
4. 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
Answer: c [Reason:] None.
5. 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
Answer: c [Reason:] None.
6. If several requests have different deadlines that are relaticely 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
Answer: a [Reason:] None.
7. 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
Answer: b [Reason:] None.
8. The EDF scheduler uses ________ to order requests according to their deadlines.
a) stack
b) disks
c) queue
d) none of the mentioned
Answer
Answer: c [Reason:] None.
9. 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
Answer: a [Reason:] None.
Operating System MCQ Set 3
1. A scheduling algorithm can use either _____ priority or ________ priority.
a) static, still
b) static, dynamic
c) live, dead
d) none of the mentioned
Answer
Answer: b [Reason:] None.
2. 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
Answer: b [Reason:] None.
3. 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
Answer: a [Reason:] None.
4. 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
Answer: c [Reason:] None.
5. 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
Answer: c [Reason:] None.
6. If several requests have different deadlines that are relaticely 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
Answer: a [Reason:] None.
7. 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
Answer: b [Reason:] None.
8. The EDF scheduler uses ________ to order requests according to their deadlines.
a) stack
b) disks
c) queue
d) none of the mentioned
Answer
Answer: c [Reason:] None.
9. 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
Answer: a [Reason:] None.
Operating System MCQ Set 4
1. 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
Answer: d [Reason:] None.
2. 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
Answer: a [Reason:] None.
3. 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
Answer: b [Reason:] None.
4. 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
Answer: c [Reason:] None.
5. RTSP stands for :
a) Real Time Streaming Policy
b) Real Time Streaming Protocol
c) Real Time Systems Protocol
d) Read Time Streaming Policy
Answer
Answer: b [Reason:] None.
6. 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
Answer: d [Reason:] None.
7. RTSP includes the following states :
a) SETUP
b) PLAY
c) PAUSE
d) All of the mentioned
Answer
Answer: d [Reason:] None.
8. 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
Answer: c [Reason:] None.
9. 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
Answer: a [Reason:] None.
10. RTP stands for :
a) real time protocol
b) real time transmission control protocol
c) real time transmission protocol
d) real time transport protocol
Answer
Answer: d [Reason:] None.
11. The problem with unicast delivery is that the :
a) memory allocation is difficult
b) server must establish a seperate unicast session for each client
c) the routers must support unicasting
d) the clients must be close to the server
Answer
Answer: b [Reason:] None.
12. The difficulty with multicasting from a practical point of view is :
a) memory allocation is difficult
b) server must establish a seperate unicast session for each client
c) the routers must support multicasting
d) none of the mentioned
Answer
Answer: c [Reason:] None.
13. 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
Answer: a [Reason:] None.
Operating System MCQ Set 5
1. A multimedia file
a) is same as any other regular file
b) must be accessed at specific rate
c) stored on remote server can not be delivered to its client
d) none of the mentioned
Answer
Answer: b [Reason:] None.
2. In which type of streaming multimedia file is delivered to the client, but not shared?
a) real-time streaming
b) progressive download
c) compression
d) none of the mentioned
Answer
Answer: a [Reason:] None.
3. Which one of the following is the characteristic of a multimedia system?
a) high storage
b) high data rates
c) both high storage and high data rates
d) none of the mentioned
Answer
Answer: c [Reason:] None.
4. The delay that occur during the playback of a stream is called
a) stream delay
b) playback delay
c) jitter
d) event delay
Answer
Answer: c [Reason:] None.
5. Which algorithm can be optimized to meet the timing deadlines and rate requirements of continuous media?
a) Earliest-Deadline-First scheduling
b) SCAN-EDF scheduling
c) Both Earliest-Deadline-First scheduling & SCAN-EDF scheduling
d) None of the mentioned
Answer
Answer: c [Reason:] None.
6. Real time streaming protocol is used
a) to control streaming media servers
b) for establishing and controlling media sessions between endpoints
c) to provide real time control of playback of media files from the server
d) all of the mentioned
Answer
Answer: d [Reason:] None.
7. In teardown state of real time streaming protocol
a) the server resources for client
b) server delivers the stream to client
c) server suspends delivery of stream
d) server breaks down the connection
Answer
Answer: d [Reason:] None.
8. CineBlitz multimedia server supports
a) real time clients
b) non-real time clients
c) both real time & non-real time clients
d) none of the mentioned
Answer
Answer: c [Reason:] None.
9. Multimedia system require hard real time scheduling
a) to ensure critical tasks will be serviced within timing deadlines
b) to deliver the media file to the client
c) to minimize the delay
d) for security
Answer
Answer: a [Reason:] None.
10. Which one of the following resource is not necessarily required on a file server?
a) secondary storage
b) processor
c) network
b) monitor
Answer
Answer: d [Reason:] None.
