2012年思科认证（CCNA）考试练习题精选1
1. What does RPC stand for (RPC代表什么.？
A. Remote personal computer
B. Reserved-programming call
C. Routed-procedure call
D. Remote-procedure call
2. What OSI reference model layer do sockets function at (套接字在O S I参考模型的哪层运作.？
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data link
G. Physical
3. What function do sockets perform (套接字的功能是什么.？
A. They make remote functions appear local, transparent to the user
B. They transfer files to and from remote nodes
C. They make the transport layer independent
D. They allow multiple applications to share the same connection to the network
4. What is WinSock (什么是Wi n S o c k .？
A. A version of sockets for the Microsoft Windows platform
B. Sockets on BSD UNIX
C. A session layer API commonly considered to be its own protocol
D. A network layer service for Microsoft Wi n d o w s
5. What does TLI do (TLI的作用是什么.？
A. It makes remote functions appear local, transparent to the user
B. It transfers files to and from remote nodes
C. It makes the transport layer independent
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