为了帮助考生们复习好《思科认证：CCNA认证学科》，我们考吧网整理了一些关于思科认证：CCNA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.Which of the following types of packets will be allowed entry when a serialinterface’s inbound access list has been configured to prohibit entry for TCP andUDP ports 21, 23 and 25? (Select three options.)

A. SMTP

B. STP

C. FTP

D. Telnet E. HTTP

F. POP3

2Match 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

3You are a technician at ABC. ABC has the subnet/mask of 172.29.100.0/26 setaside for small remote locations. Each location will have 5 IP devices connected to

the network. Which VLSM mask will provide the minimum number of hosts you require?

A. /27

B. /28

C. /29

D. /30

E. /31

4Which 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

B. Network

C. Session

D. Application

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