單項(xiàng)選擇題What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table?（）

A.The switch will not forward unicast frames.
B.The switch will forward the frame to a specific port.
C.The switch will return a copy of the frame out the source port.
D.The switch will remove the destination MAC from the switch table.
E.The switch will forward the frame to all ports except the port on which it was received.


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1.多項(xiàng)選擇題Which of the following are key characteristics of PPP? (Choose three.)（）

A.can be used over analog circuits
B.maps Layer 2 to Layer 3 address
C.encapsulates several routed protocols
D.supports IP only
E.provides error correction

2.多項(xiàng)選擇題What TCP/IP stack configuration features can DHCP provide, in addition to assigning an IP address? (Choose three.)（）

A.default gateway
B.DNS servers
C.FTP server
D.helper address
E.subnet mask
F.TFTP server

3.多項(xiàng)選擇題What are two characteristics of Telnet? (Choose two.)（）

A.It sends data in clear text format.
B.It is no longer supported on Cisco network devices.
C.It is more secure than SSH
D.It requires an enterprise license in order to be implemented.
E.It requires that the destination device be configured to support Telnet connections.

4.單項(xiàng)選擇題Which of the following is true regarding the use of switches and hubs for network connectivity?（）

A.Switches take less time to process frames than hubs take.
B.Switches do not forward broadcasts.
C.Hubs can filter frames.
D.Using hubs can increase the amount of bandwidth available to hosts.
E.Switches increase the number of collision domains in the network.

5.多項(xiàng)選擇題Which statements are true about EIGRP successor routes? (Choose two.)（）

A.A successor route is used by EIGRP to forward traffic to a destination.
B.Successor routes are saved in the topology table to be used if the primary route fails.
C.Successor routes are flagged as "active" in the routing table.
D.A successor route may be backed up by a feasible successor route.
E.Successor routes are stored in the neighbor table following the discovery process.