DCN - UDP,TCP

1. 1. UDP is called a ________________transport protocol.

• • a. connectionless, reliable

• • b. connection-oriented, unreliable

• c. connectionless, unreliable

• d. none of the above

2. One of the responsibilities of the transport layer protocol is to create a ______ communication.

• • a. host-to-host

• • b. process-to-process

• • c. node-to-node

• • d. none of the above

3. 3. In the sending computer, UDP receives a data unit from the _______ layer.

• • a. application

• • b. transport

• • c. IP

• • d. none of the above

4. 4. UDP and TCP are both _______ layer protocols

• a. data link

• • b. network

• • c. transport

• • d. none of the above

5. 5. When the IP layer of a receiving host receives a datagram, _______

• a. delivery is complete

• b. a transport layer protocol takes over

• c. a header is added

• d. none of the above

6. 6. TCP is a __________protocol

• a. stream-oriented

• • b. message-oriented

• c. block-oriented

• d. none of the above

7. 7. TCP allows the sending process to deliver data as a _______of bytes and allows the receiving process to obtain data as a _________ of bytes

• • a. message; message

• b. stream; stream

• c. block; block

• d. none of the above

8. 8. TCP groups a number of bytes together into a packet called a _____

• • a. user datagram

• b. segment

• c. datagram

• d. none of the above

9. 9. TCP uses _________________ to check the safe and sound arrival of data.

• a. an acknowledgment mechanism

• b. out-of-band signalling

• • c. the services of another protocol

• d. none of the above

10. 10. The bytes of data being transferred in each connection are numbered by TCP. The numbering starts with a __________________

• a. 0

• b. 1

• c. randomly generated number

• d.none of the above