1. Which two of the following are not from the physical layer?
A. SDLC B. V.35 C. HSSI D. ISDN E. RS-232
Answer A D. SDLC and ISDN are WAN protocols that function at the data link layer
2. Which two answers are functions of the OSI model"s network layer?
A. Sequencing of frames B. Path determination
C. Packet switching D. Packet sequencing
Answer B C. Sequencing is done at the data link layer. D is fictional.
er B C. Sequencing is done at the data link layer. D is fictional.
3. What is an example of a MAC address?
A. Az32:6362:2434 B. Sj:2817:8288
C. GGG:354:665 D. A625:cbdf:6525
Answer D. The address is a 48 bit address which requires 12 Hex digits. A hex digit
can t be past the letter F. Hex stands for 16. 1-9 and A-F make up numbers that are
valid.
4. Which of the following is not part of the data link layer?
A. Transports data across the physical link
B. Performs physical addressing
C. Performs flow control
D. Determines network topology
E. Terminates a session
转自:考试网 - [Examw.Com]Answer E. This is part of the session layer
