CCNA考试自测题第1卷一.docx
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CCNA考试自测题第1卷一
1） Match the following application layer services to their corresponding transport layer
protocol port. （匹配下列的应用层服务和它们对应的传输层协议端口）：
A. SMTP 1. TCP/23
B. FTP 2. TCP/25
C. TFTP 3. TCP/80
D. Te l n e t 4. TCP/21
E. HTTP 5. UDP/69
F. DNS 6. TCP/53
2） Which OSI reference model layer does Telnet function at （Te l n e t在哪一个O S I参考模型层运作）？
A. Transport 下载
B. Network
C. Session
D. Application
3） How many layers does the TCP/IP protocol suite have, compared to the OSI reference
model （和O S I参考模型相比，T C P / I P协议具有几层）？
A. TCP model has 4, OSI model has 6
B. TCP model has 7, OSI model has 8
C. TCP model has 4, OSI model has 7
D. TCP model has 7, OSI model has 4
4） The TCP/IP protocol suite has a formal session layer that includes NetBIOS、RPCs and
TLI functions （TCP/IP协议套件具有包含N e t B I O S、R P C和T L I功能的一个正式的会话层）。
A. True
B. False
5） What is the function of RPCs （RPC的功能是什么）？
A. To move files from remote PCs to a local PC
B. To make remote function calls transparent, so they appear to be local
C. To initialize a program on a remote PC
D. To send a procedure that is local to a remote node for processing elsewhere
6） 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
7） 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
8） 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
9） 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
10） 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
D. It allows multiple applications to share the same connection to the network
11） 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
12） 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
13） 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
14） 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
15） 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
16） 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
17） 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
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