2012年思科认证（CCNA）考试练习题精选3
1. Which of the following services uses a process called windowing (下面的哪一个服务使用了所谓的窗口机制.？
A. Reliable data transfer
B. Connection-oriented virtual circuit
C. Buffered transfer
D. Resequencing
E. Multiplexing
F. Efficient, full-duplex transmission
G. Flow control
12. What is UDP (什么是U D P .？
A. An API that makes the transport layer independent
B. A connectionless, unreliable transport protocol
C. An API that allows multiple applications to share a network connection
D. A function that makes remote procedures appear to be local
题库精选CCNA考试自测题第1卷_第3页
中华IT学院 【大 中 小】 [ 2011年5月23日 ]
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13. Which of the following best describes TCP/IP (下面的哪句话最准确地说明了T C P / I P .？
A. A static protocol
B. A proprietary protocol
C. A collection of internetworking protocols
14. UDP and TCP represent mechanisms used by which layer of the TCP/IP (UDP和T C P表示了T C P / I P的哪层使用的机制.？
A. Data link layer
B. Physical layer
C. Presentation layer
D. Transport layer
15. RPCs provide which of the following (RPC提供了下面的哪个功能.？
A. Connection-oriented session
B. Transparency to make remote calls look local
C. Portability of applications between heterogeneous systems
D. A and C only
E. B and C only
F. A, B, and C