2014年思科认证考试：(Cisco)CCNA仿真试题3
为了帮助广大考生系统全面的复习好《思科认证：CCNA认证学科》，我们考吧网整理了思科认证模拟试题，本次汇编的模拟试题希望对你的考试有所帮助，预祝你考试顺利。
1 What does Peer to Peer communication involve?
A. Each layer communication with the layer below it
B. Each layer communication with layer above it
C. Each layer communicating with adjacent layer in another system
D. Each layer communication with it s corresponding layer in another system
Answer D. Answer C sounds correct also, but adjacent and corresponding are two
different things. The session layer can only communicate with the session layer in
another system for example.
2 Why does the industry use a layered model? Choose all correct
A. When you enhance one layer it doesn t affect the other layers
B. Design and development can be made in a modular fashion
C. Network operations can be simplified
D. Troubleshooting can be simplified.
Answer A B C D.
3 Which of the following is not a job for the presentation layer? Choose 2
A. Data representation
B. Compression
C. Dialog management
D. Transmission E. Encryption
Answer C D. C is handled by the session layer, and D is handled by the Transportlayer
4 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
5 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.
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