a. transmission check protocol

　　b. transport check protocol

　　c. transmission control protocol

　　d. transport control protocol
　　
　　47: your boss wants to know what udp stands for. what do you tell him?

　　a. unreliable data protocol

　　b. unreliable data program

　　c. user-defined protocol

　　d. user datagram protocol
　　
　　48: which of the following statements accurately describes udp?

　　a. udp copies files between a computer and a system running rshd, the remote shell service (daemon).

　　b. udp is a member of the tcp/ip suite of protocols that governs the exchange of electronic mail between message transfer agents.

　　c. udp is a member of the tcp/ip suite of protocols and is used to copy files between two computers on the internet. both computers must support their respective roles: one must be a client, and the other a server.

　　d. udp is a tcp complement that offers a connectionless datagram service guaranteeing neither delivery nor correct sequencing of delivered packets (much like ip).
　　
　　49: which of the following host addresses are members of networks that can be routed across the public internet? (choose three.)

　　a. 10.20.12.64

　　b. 172.16.32.129

　　c. 172.64.32.34

　　d. 192.168.23.252

　　e. 196.104.12.95

　　f. 214.192.48.254
　　
　　50: you are connecting your serial 0/1 interface to the internet. which of the following need to be done for the connection to work? (choose two.)

　　a. assign a public ip address.

　　b. use the shutdown command.

　　c. use the no shutdown command.

　　d. make sure the interface is running in full-duplex.