2012年思科认证（CCNA）考试练习题精选2
思科认证（CCNA）考试模拟题
6. What OSI layer does NetBIOS function at (NetBIOS在O S I哪一层运作.？
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data Link
G. Physical
7. Which protocols can NetBIOS bind to? (Select all that are applicable.. (NETBIOS可以绑定在哪个协议上，选择所有可能的协议.？
A. Appletalk
B. IPX
C. IP
D. NetBEUI
8. What layers do not exist in the TCP/IP model that are in the OSI model (哪层不在T C P / I P模型中，但它在O S I模型中.？
A. Application, presentation, and network
B. Presentation, session, and data link
C. Session, network, and physical
D. Presentation, data link, and physical
9. What is a socket in the transport layer (传输层中的套接字是什么.？
A. The socket is an IP address plus a port
B. An API that makes the transport layer independent
C. An API that allows multiple applications to share a network connection
D. A function that makes remote procedures appear to be local
10. What is a port (什么是端口.？
A. An API that makes the transport layer independent
B. An API that allows multiple applications to share a network connection
C. A function that makes remote procedures appear to be local
D. The point where upper-layer processes access transport layer services