單項選擇題Which one of the following privileged EXEC mode IOS show commands will display the state of the OSPF DR/BDR (designated router / backup designated router) election process?（）

A. TK1# show ip ospf interface
B. TK1# show ip ospf priority
C. TK1# show ospf neighbor detail
D. TK1# show ospf processes
E. TK1# show ospf neighbor state


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1.多項選擇題To configure the VLAN trunking protocol to communicate VLAN information between two switches, what two requirements must be met?（）

A. Each end of the trunk line must be set to IEEE 802.1E encapsulation.
B. The VTP management domain name of both switches must be set the same.
C. All ports on both the switches must be set as access port.
D. One of the two switches must be configured as a VTP server.
E. A rollover cable is required to connect the two switches together.
F. A router must be used to forward VTP traffic between VLANs.

2.多項選擇題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

4.單項選擇題What command verifies connectivity between two hosts by sending and receiving ICMP echo messages?（）

A. ping
B. tracert
C. netstat
D. show cdp neighbors detail
E. show ip route
F. traceroute

5.單項選擇題A new Catalyst switch is connected to an existing switch using a crossover cable. As a result of this, what would the switch port link lights display?（）

A. The switch port link lights will be off on both switches indicating the ports are not connected.
B. The switch port link light will be off on one switch indicating that STP has disabled the port.
C. The switch port link lights will flash amber indicating an error.
D. The switch port link lights will be green indicating normal operation.

6.多項選擇題Which of the following IOS commands could you use to troubleshoot a router connectivity problem on an IP network?（）

A. show ip route
B. ipconfig
C. tracert
D. show interfaces
E. traceroute
F. ping
G. All of the above

9.多項選擇題

There are 2 switches in the Testking LAN, with no routers. Ports 1, 2 & 3 are assigned to VLAN 1 in switch 1 and 2 and ports 4, 5 & 6 are assigned to VLAN 2 in both switches. These two switches are connected together via a trunked link.
Which of the conditions below would verify trunk and VLAN operation?（）

A. Host 1 on VLAN 1 can ping Host 2 on VLAN 1
B. Host 1 on VLAN 1 can ping Host 4 on VLAN 2
C. Host 1 on VLAN 1 can not ping Host 2 on VLAN 1
D. Host 4 on VLAN 2 can not ping Host 1 on VLAN 1
E. Host 4 on VLAN 2 can ping Host 2 on VLAN 2