Which one of the following protocols allows the information about the configuration of a new VLAN to be distributed across entire switched network?

A. STP

B. VTP

C. EIGRP

D. SNMP

E. CDP

F. None of the above

Which of the following commands would be applied to a WAN interface, but not on LAN Interface? (Choose all that apply)

A. IP address

B. encapsulation PPP

C. no shutdown

D. authentication CHAP

E. Speed

F. None of the above

When a switch port is used as a VLAN trunk, which of the following trunk modes are valid? (Select all that apply.)

A. Blocking

B. Auto

C. Desirable

D. On

E. Transparent

F. Learning

下面哪个操作可以使访问控制列表真正生效（）。

A.将访问控制列表应用到接口上

B.定义扩展访问控制列表

C.定义多条访问控制列表的组合

D.用access-list命令配置访问控制列表

请参见图示。公司的新安全策略允许来自工程部LAN的所有IP流量访问Internet，但对于来自营销部LAN的流量，则只允许其中的web流量访问Internet。为实施新的安全策略，可在营销部路由器的Serial0/1接口的出站方向上应用哪一ACL()

A.access-list 197 permit ip 192.0.2.0 0.0.0.255 any access-list 197 permit ip 198.18.112.0 0.0.0.255 any eq www

B.access-list 165 permit ip 192.0.2.0 0.0.0.255 any access-list 165 permit tcp 198.18.112.0 0.0.0.255 any eq www access-list 165 permit ip any any

C.access-list 137 permit ip 192.0.2.0 0.0.0.255 any access-list 137 permit tcp 198.18.112.0 0.0.0.255 any eq www

D.access-list 89 permit 192.0.2.0 0.0.0.255 any access-list 89 permit tcp 198.18.112.0 0.0.0.255 any eq www

支持可变长子网掩码的路由协议有()

A.RIPv1

B.RIPv2

C.OSPF

D.IS-IS