OSI Layers MCQs Quiz Multiple Choice Questions & Answers

1. How many layers does OSI Reference Model has?

1. 4
2. 5
3. 6
4. 7

2. The physical layer concerns with

1. bit-by-bit delivery
2. process to process delivery
3. application to application delivery
4. none of the mentioned

3. Which transmission media has the highest transmission speed in a network?

1. coaxial cable
2. twisted pair cable
3. optical fiber
4. electrical cable

4. Bits can be send over guided and unguided media as analog signal by

1. digital modulation
2. amplitude modulation
3. frequency modulation
4. phase modulation

5. The portion of physical layer that interfaces with the media access control sublayer is called

1. physical signalling sublayer
2. physical data sublayer
3. physical address sublayer
4. none of the mentioned

6. physical layer provides

1. mechanical specifications of electrical connectors and cables
2. electrical specification of transmission line signal level
3. specification for IR over optical fiber
4. all of the mentioned

7. In asynchronous serial communication the physical layer provides

1. start and stop signalling
2. flow control
3. both (a) and (b)
4. none of the mentioned

8. The physical layer is responsible for

1. line coding
2. channel coding
3. modulation
4. all of the mentioned

9. The physical layer translates logical communication requests from the ______ into hardware specific operations.

1. data link layer
2. network layer
3. trasnport layer
4. application layer

10. A single channel is shared by multiple signals by

1. analog modulation
2. digital modulation
3. multiplexing
4. none of the mentioned

11. Wireless transmission can be done via

1. radio waves
2. microwaves
3. infrared
4. all of the mentioned

12. The network layer concerns with

1. bits
2. frames
3. packets
4. none of the mentioned

13. Which one of the following is not a function of network layer?

1. routing
2. inter-networking
3. congestion control
4. none of the mentioned

14. The 4 byte IP address consists of

1. network address
2. host address
3. both (a) and (b)
4. none of the mentioned

15. In virtual circuit network each packet contains

1. full source and destination address
2. a short VC number
3. both (a) and (b)
4. none of the mentioned

16. Which one of the following routing algorithm can be used for network layer design?

1. shortest path algorithm
2. distance vector routing
3. link state routing
4. all of the mentioned

17. Multidestination routing

1. is same as broadcast routing
2. contains the list of all destinations
3. data is not sent by packets
4. none of the mentioned

18. A subset of a network that includes all the routers but contains no loops is called

1. spanning tree
2. spider structure
3. spider tree
4. none of the mentioned

19. Which one of the following algorithm is not used for congestion control?

1. traffic aware routing
2. admission control
3. load shedding
4. none of the mentioned

20. The network layer protocol of internet is

1. ethernet
2. internet protocol
3. hypertext transfer protocol
4. none of the mentioned

21. ICMP is primarily used for

1. error and diagnostic functions
2. addressing
3. forwarding
4. none of the mentioned

22. Transport layer aggregates data from different applications into a single stream before passing it to

1. network layer
2. data link layer
3. application layer
4. physical layer

23. Which one of the following is a transport layer protocol used in internet?

1. TCP
2. UDP
3. both (a) and (b)
4. none of the mentioned

24. User datagram protocol is called connectionless because

1. all UDP packets are treated independently by transport layer
2. it sends data as a stream of related packets
3. both (a) and (b)
4. none of the mentioned

25. Transmission control protocol is

1. connection oriented protocol
2. uses a three way handshake to establish a connection
3. recievs data from application as a single stream
4. all of the mentioned

26. An endpoint of an inter-process communication flow across a computer network is called

1. socket
2. pipe
3. port
4. none of the mentioned

27. Socket-style API for windows is called

1. wsock
2. winsock
3. wins
4. none of the mentioned

28. A _____ is a TCP name for a transport service access point.

1. port
2. pipe
3. node
4. none of the mentioned

29. Transport layer protocols deals with

1. application to application communication
2. process to process communication
3. node to node communication
4. none of the mentioned

30. Which one of the following is a transport layer protocol?

1. stream control transmission protocol
2. internet control message protocol
3. neighbor discovery protocol
4. dynamic host configuration protocol

31. The ____ translates internet domain and host names to IP address.

1. domain name system
2. routing information protocol
3. network time protocol
4. internet relay chat

32. Which one of the following allows a user at one site to establish a connection to another site and then pass keystrokes from local host to remote host?

1. HTTP
2. FTP
3. telnet
4. none of the mentioned

33. Application layer protocol defines

1. types of messages exchanged
2. message format, syntax and semantics
3. rules for when and how processes send and respond to messages
4. all of the mentioned

34. Which one of the following protocol delivers/stores mail to reciever server?

1. simple mail transfer protocol
2. post office protocol
3. internet mail access protocol
4. hypertext transfer protocol

35. The ASCII encoding of binary data is called

1. base 64 encoding
2. base 32 encoding
3. base 16 encoding
4. base 8 encoding

36. Which one of the following is an internet standard protocol for managing devices on IP network?

1. dynamic host configuration protocol
2. simple newtwork management protocol
3. internet message access protocol
4. media gateway protocol

37. Which one of the following is not an application layer protocol?

1. media gateway protocol
2. dynamic host configuration protocol
3. resource reservation protocol
4. session initiation protocol

38. Which protocol is a signalling communication protocol used for controlling multimedia communication sessions?

1. session initiation protocol
2. session modelling protocol
3. session maintenance protocol
4. none of the mentioned

39. Which one of the following is not correct?

1. application layer protocols are used by both source and destination devices during a communication session
2. application layer protocols implemented on the source and destination host must match
3. both (a) and (b)
4. none of the mentioned

40. When displaying a web page, the application layer uses the

1. HTTP protocol
2. FTP protocol
3. SMTP protocol
4. none of the mentioned

41. Application developer has permission to decide the following on transport layer side

1. Transport layer protocol
2. Maximum buffer size
3. Both of the mentioned
4. None of the mentioned

42. Application layer offers _______ service

1. End to end
2. Process to process
3. Both of the mentioned
4. None of the mentioned

43. E-mail is

1. Loss-tolerant application
2. Bandwidth-sensitive application
3. Elastic application
4. None of the mentioned

44. Pick the odd one out

1. File transfer
2. File download
3. E-mail
4. Interactive games

45. Which of the following is an application layer service ?

1. Network virtual terminal
2. File transfer, access, and management
3. Mail service
4. All of the mentioned

46. To deliver a message to the correct application program running on a host, the _______ address must be consulted

1. IP
2. MAC
3. Port
4. None of the mentioned

47. This is a time-sensitive service

1. File transfer
2. File download
3. E-mail
4. Internet telephony

48. Transport services available to applications in one or another form

1. Reliable data transfer
2. Timing
3. Security
4. All of the mentioned

49. Electronic mail uses this Application layer protocol

1. SMTP
2. HTTP
3. FTP
4. SIP