A.The command is accepted and the respective VLAN is ad……

单项选择题In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?（）

A.after broken links are re-established
B.in an improperly implemented redundant topology
C.when upper-layer protocols require high reliability
D.during high traffic periods
E.when a dual ring topology is in use

多项选择题Which router IOS commands can be used to troubleshoot LAN connectivity problems?（）

A.ping
B.tracert
C.ipconfig
D.show ip route
E.winipcfg
F.show interfaces

单项选择题Refer to the exibit .An attempt to deny web access to a subnet blocks all traffic from the subnet.Which interface command immedicately removes the effect of ACL 102?（）

A.no ip access-group 102 in
B.no ip access-group 102 out
C.no ip access-list 102 in
D.no ip access-class 102 out
E.no ip access-class 102 in

单项选择题What will happen if a private IP address is assigned to a public interface connected to an ISP?（）

A.Addresses in a private range will be not routed on the Internet backbone.
B.Only the ISP router will have the capability to access the public network.
C.The NAT process will be used to translate this address in a valid IP address.
D.Several automated methods will be necessary on the private network.
E.A conflict of IP addresses happens, because other public routers can use the same range.

单项选择题Refer to the exhibit. Give this output for SwitchC, what should the network administrators next action be?（）

A.Check the trunk encapsulation mode for SwitchC's fa0/1 port.
B.Check the duplex mode for SwitchC's fa0/1 port.
C.Check the duplex mode for SwitchA's fa0/2 port.
D.Check the trunk encapsulation mode for SwitchA's fa0/2 port.