Which router IOS commands can be used to troubleshoot LAN connectivity problems?（）

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.

单项选择题Refer to the exhibit. A network technician is asked to design a small network with redundancy. The exhibit represents this design, with all hosts configured in the same VLAN. What conclusions can be made about this design?（）

A.The design will function as intended
B.Spanning-tree will need to be used.
C.The router will not accept the addressing scheme.
D.The connection between switches should be a trunk.
E.The router interfaces must be encapsulated with the 802.1Q protocol.

单项选择题Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0 13. An 802.1Q trunk is configured between the two switches. On CAT1, VLAN 10 is chosen as native, but on CAT2 the native VLAN is not specified.What will happen in this scenario?（）

A.802.1Q giants frames could saturate the link.
B.VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames.
C.A native VLAN mismatch error message will appear.
D.VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames.