CCNA考试题库中英文翻译版及答案4

<SCRIPT type=text/javascript><!--
google_ad_client = "pub-7544158037619893";
/* 250x250, 创建于 08-6-3 */
google_ad_slot = "3368625097";
google_ad_width = 250;
google_ad_height = 250;
//-->
</SCRIPT>

<SCRIPT src="http://pagead2.googlesyndication.com/pagead/show_ads.js" type=text/javascript>
</SCRIPT>

<SCRIPT type=text/javascript><!--
google_ad_client = "pub-7544158037619893";
/* 250x250, 创建于 08-6-3 */
google_ad_slot = "3368625097";
google_ad_width = 250;
google_ad_height = 250;
//-->
</SCRIPT>

<SCRIPT src="http://pagead2.googlesyndication.com/pagead/show_ads.js" type=text/javascript>
</SCRIPT>

9. Refer to the exhibit. The network administrator has created a new VLAN on Switch1 and addedhost C and host D. The administrator has properly configured switch interfaces FastEthernet0/13 through FastEthernet0/24 to be members of the new VLAN. However, after the network administrator completed the configuration, host A could communicate with host B, but host A could not communicate with host C or host D. Which commands are required to resolve this problem?

　　9.网络管理员在交换机1上创建一个新VLAN并且将主机C和主机D加入到此VLAN中.管理员配置交换机接口FastEthernet0/13到FastEthernet0/24成为新VLAN成员.但是网络管理员完成配置以后,主机A可以和主机B通信,但是主机A不能和主机C或者主机D通信.哪个命令可以用来解决这个问题



     A. Router(config)# interface fastethernet 0/1.3

　　Router(config-if)# encapsulation dot1q 3

　　Router(config-if)# ip address 192.168.3.1 255.255.255.0

　B. Router(config)# router rip

　　Router(config-router)# network 192.168.1.0

　　Router(config-router)# network 192.168.2.0

　　Router(config-router)# network 192.168.3.0

　C. Switch1# vlan database

　　Switch1(vlan)# vtp v2-mode

　　Switch1(vlan)# vtp domain cisco

　　Switch1(vlan)# vtp server

　D. Switch1(config)# interface fastethernet 0/1

　　Switch1(config-if)# switchport mode trunk

　　Switch1(config-if)# switchport trunk encapsulation isl

　　Answer: A

　　

10. For security reasons, the network administrator needs to prevent pings into the corporate networks from hosts outside the internetwork. Which protocol should be blocked with access control lists?

　　10.出于安全考虑，网络管理员需要去防止外网主机PING内网，下面那个协议应该用access control lists 限制掉

　　A. IP　　B. ICMP

　　C. TCP　　D. UDP

　　Answer: B