單項(xiàng)選擇題A technician is troubleshooting a host connectivity problem. The host is unable to ping a server connected to Switch_A. Based on the results of the testing, what could be the problem（）。

A.A remote physical layer problem exists.
B.The host NIC is not functioning.
C.TCP/IP has not been correctly installed on the host.
D.A local physical layer problem exists.


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3.多項(xiàng)選擇題Which statements describe two of the benefits of VLAN Trunking Protocol?（）

A.VTP allows routing between VLANs.
B.VTP allows a single switch port to carry information to more than one VLAN.
C.VTP allows physically redundant links while preventing switching loops.
D.VTP simplifies switch administration by allowing switches to automatically share VLAN configuration information.
E.VTP helps to limit configuration errors by keeping VLAN naming consistent across the VTP domain.
F.VTP enhances security by preventing unauthorized hosts from connecting to the VTP domain.


4.單項(xiàng)選擇題A network administrator must configure 200 switch ports to accept traffic from only the currently attached host devices.What would be the most efficient way to configure MAC-level security on all these ports？ （）

A.Visually verify the MAC addresses and then telnet to the switches to enter the switchport-port security mac-address command.
B.Have end users e-mail their MAC addresses. Telnet to the switch to enter the switchport-port security mac-address command.
C.Use the switchport port-security MAC address sticky command on all the switch ports that have end devices connected to them.
D.Use show mac-address-table to determine the addresses that are associated with each port and then enter the commands on each switch for MAC address port-security.

5.多項(xiàng)選擇題Which can be done to secure the virtual terminal interfaces on a router?（）

A.Administratively shut down the interfaces.
B.Physically secure the interfaces.
C.Configure a virtual terminal password and login process.
D.Enter an access list and applyit to the terminal interfaces using theaccess-class command.
E.Create an access list and applyit to the terminal interfaces using theaccess-group command.

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