2014年思科认证考试CCNA备考模拟试题三
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.With regard to ISDN， which of the following are true?
A. Legacy DDR can use port information to define interesting traffic.
B. Legacy DDR can configure multiple dialer configurations on the same interface.
C. Legacy DDR can use ACLs to define interesting traffic.
D. HDLC or PPP can be used to encapsulate ISDN D channel information.
E. The BRI interfaces on ISDN routers with dialer profiles configured cannot belong to multiple dialer pools.
F. Dialer profiles cannot use ACLs to define interesting traffic.
2Which of the following commands would not set a password on a Cisco router?
A. router(config)#enable secret
B. router(config-line)#password test
C. router(config)#service encryption password
D. router(config)#enable password
Answer C. This command is used to encrypt passwords in configuration files.
3.Which of the following types of packets will be allowed entry when a serial interface’s inbound access list has been configured to prohibit entry for TCP and UDP ports 21， 23 and 25?
A. SMTP
B. STP
C. FTP
D. Telnet
E. HTTP
F. POP3
4. If you need to copy the currently executing configuration file into NVRAM,
which command would you use?
A. router#copy startup-config running-config
B. router#copy startup-config TFTP
C. router#copy running-config startup-config
D. router>copy startup-config running-config
Answer C. Answers ABC show that the router is in privilege mode which is necessary
to complete this action, but only C shows the correct syntax.
5.One of the trainees assigned to you want to know which services use TCP. What can you tell him?
A. DHCP
B. SMTP
C. SNMP
D. FTP
E. HTTP
F. TFTP
6.Which of the following network masks would you use to reduce any wastage of IP addresses in point-to- point WAN links on a network that supports VLSM?
A. /38
B. /30
C. /27
D. /23
E. /18
7How would you configure a router to avoid situations such as split horizon issues hampering routing 0updates on a Frame Relay network?
A. Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the subinterface.
B. Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
C. Configure one sub-interface to disperse into multiple PVC connections to multiple remote router interfaces.
D. Configure as many as possible sub-interfaces on the same subnet.
8. Which of the following would cause a router to boot into the initial
configuration dialog after powering has cycled?
A. Someone had copied the startup configuration file in a TFTP server
B. The running configuration file was copied to the startup configuration file
C. It is the first time router has ever been turned on
D. The write erase command was executed immediately before powering down the router.
Answer C and D. These two scenarios describe what will happen when the router needs
to use NVRAM to boot if it cannot find the configuration file.
9. What would cause a router to boot from ROM?
A. 0x3202 B. 0x2302 C. 0x2101 D. 0x2103
Answer C. A configuration register of 1 or 0 will cause the router to boot from ROM.
10. Where does the running config file exist?
A. NVRAM B. ROM C. RAM D. Flash
Answer C. This file is erased if the router is reloaded or rebooted.
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