CHAPTER 3 Transport Layer

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CHAPTER 3 Transport Layer

CHAPTER 3

Transport Layer

Review Questions

1. It means that the application layer programs do not need to be concerned about the

protocols (and physical network) used at layers 1 to 3.

2. Application-to-application (or process-to-process) delivery is the delivery of a

packet from the process at the source host to the process at the destination host.

3. The transport layer has a packet size limitation. Also, smaller packets are easier to

retransmit in an error situation.

4. Connection establishment, data transfer, and connection termination.

5. The three-way handshake is the exchange of 3 packets between two parties during

connection establishment.

6. The four-way handshake is the exchange of 4 packets between two parties during

connection termination

7. The port number identifies the application sender or receiver for the transport

layer.

8. The server program uses a well-known port number; the client uses a temporary

port number.

9. A reliable service provides loss control, error control, sequence control, and duplicate

control.

10. The sequence number of a packet is needed to order the packets at the receiver.

11. UDP and TCP.

12. TFTP and SNMP use UDP.

13. SMTP, HTTP, FTP and TELNET use TCP.

Multiple-Choice Questions

14. d

15. d

16. a

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2 CHAPTER 3 TRANSPORT LAYER

17. c

18. b

19. b

20. c

21. d

22. a

23. d

24. b

25. c

26. b

27. c

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