CCNA系列认证
单选题You wish to limit telnet access into your Cisco router to only a single host. In order to accomplish this, access list 1 has been written to allow host 172.16.1.224 access to the router vty lines. What command would assign this access- list to the Virt
题目
router(config-line)# ip access-group 1 in
router(config-line)# access-class 1 in
router(config-line)# ip access-list 1 in
router(config-line)# access-line 1 in
相似问题和答案
第1题：
You are unable to telnet to a router at address 203.125.12.1 from a workstation with the IP address 203.125.12.23. You suspect that there is a problem with the IP protocol stack in your PC. Which of the following actions is most likely to confirm your diagnosis?
A. ping 127.0.0.0
B. ping 203.125.12.1
C. telnet 127.0.0.1
D. ping 127.0.0.1
E. tracert 203.125.12.1
F. None of the above
D 解析：Explanation:
Every Windows based PC uses the 127.0.0.1 as the local loopback IP address. Every PC will respond to this local IP address if the TCP/IP stack is correctly installed and running on the machine. If you cannot ping the loopback address of 127.0.0.1, then something is wrong with the TCP/IP protocol stack
第2题：
You install a new hardware router that provides wireless network connectivity between your computer and the Internet. You connect to the router by using a wireless network adapter.Your computer is able to access the Internet but is unable to discover other computers in the local wireless network.You need to configure the wireless connection to allow your computer to discover other computers.What should you do?（）
A.A
B.B
C.C
D.D
第3题：
After working all night and successfully configuring a Cisco router for the Ezonexam network you save your changes on the startup config, reboot the router, and go out for a cigarette. When you return, none of your changes are active and the router boots to the initial configuration mode! Which of the choices below indicates the source of your problem?
A．Hardware failure in NVRAM prevents the router from loading the config
B．Startup-config in flash is corrupt and cannot be analyzed
C．Router configuration-register set to bypass startup configuration
D．Startup-config in NVRAM is corrupt and cannot be analyzed
E．None of the above
解析：Explanation:
The default configuration-register setting of 0x2102 loads the IOS from flash and the configuration from NVRAM.
However, for password recovery, you can set the register to 0x2142 and the startup-config file in NVRAM will be bypassed. The problem described here is that the config register was not changed back to 0x2102 before the router was rebooted, so the active configuration is bypassed. Simply setting the config register back to 0x2102 will fix this problem.
Incorrect Answers:
A, B, D. All of these describe hardware or software errors. In the event that this is the problem, errors will be generated and the router will fail to boot properly. In these cases, the router will not return to the initial startup configuration.
第4题：
You wish to limit telnet access into your Cisco router to only a single host. In order to accomplish this, access list 1 has been written to allow host 172.16.1.224 access to the router vty lines.What command would assign this access- list to the Virtual Terminal Lines?（）
A. router(config-line)# ip access-group 1 in
B. router(config-line)# access-class 1 in
C. router(config-line)# ip access-list 1 in
D. router(config-line)# access-line 1 in
第5题：
You are a technician at TestKing. Your assistant applied an IP access control list to Router TK1. You want to check the placement and direction of the access control list.Which command should you use?（）
A. show access-list
B. show ip access-list
C. show ip interface
D. show interface
E. show interface list
第6题：
You are logged into a router and wish to view the layer 3 information about your neighboring Cisco routers. What IOS command gives layer 3 information for of the directly connected router interfaces?
A. show ip links
B. show cdp neighbor
C. show cdp neighbor detail
D. show ip clients
E. show ip route
F. None of the above
C 解析：Explanation:
To display detailed information about neighboring devices discovered using Cisco Discovery Protocol (CDP), use the show cdp neighbors privileged EXEC command.
Detail - (Optional) Displays detailed information about a neighbor (or neighbors) including network address, enabled protocols, hold time, and software version.
Incorrect Answers:
A, D. These are invalid commands.
B. The "show cdp neighbor" command, without the "detail" keyword will not display the additional layer 3 protocol information.
E. This will show all routes from all other routers within the domain. We wish to see information from just the direct interface neighbors.
第7题：
A.
B.
C.
D.
第8题：
You are trying to connect directly into the LAN prot of a Ezonexam router. You want to telnet to the local Cisco router using TCP/IP but cannot create a session.
What should you do to resolve the problem?
A. Use a straight-through cable to connect your computer's COM port to the router's console port.
B. Use a crossover cable to connect your computer's COM port to the router's console port.
C. Use a straight-through cable to connect your computer's COM port to the router's Ethernet port.
D. Use a crossover cable to connect your computer's Ethernet port to the router's Ethernet port.
E. Use a rollover cable to connect your computer's Ethernet port to the router's Ethernet port.
F. Use a straight-through cable to connect your computer's Ethernet port to the router's Ethernet port.
G. None of the above
D 解析：Explanation:
In order to connect directly to a router via telnet, you must connect to the router via one of the LAN ports. When connecting directly to the Ethernet port with a PC without the use of a switch or hub, a crossover cable must be used.
Incorrect Answers:
A, B, C. In order to telnet directly into the router via a TCP/IP connection, the COM port of the PC can not be used. The COM port is used for direct terminal emulation programs such as HyperTerminal.
E. Rollover cables are used for console connections into the router, not for TCP/IP connections.
F. Straight through cables are used for connections into a switch or hub from the PC. It will not work for direct Ethernet connections into the router.
第9题：
You‘re the systems administrator at Testing, and you create the following access control lists.You then enter the command "ip access-group 101 in" to apply access control list 101 to router TK1s e0 interface.Which of the following Telnet sessions will be blocked as a result of your access lists?（）
A. Telnet sessions from host A to host 5.1.1.10
B. Telnet sessions from host A to host 5.1.3.10
C. Telnet sessions from host B to host 5.1.2.10
D. Telnet sessions from host B to host 5.1.3.8
E. Telnet sessions from host C to host 5.1.3.10
F. Telnet sessions from host F to host 5.1.1.10
第10题：
A. Administratively shut down the interface.
B. Physically secure the interface.
C. Create an access list and apply it to the virtual terminal interfaces with the access-group command.
D. Configure a virtual terminal password and login process.
E. Enter an access list and apply it to the virtual terminal interfaces using the access-class command.