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.


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1.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.

2.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.

3.多項(xiàng)選擇題The network security policy requires that only one host be permitted to attach dynamically to each switch interface. If that policy is violated, the interface should shut down. Which two commands must the network administrator configure on the 2950 Catalyst switch to meet this policy? (Choose two.)（）

A.Switch1（config-if）# switchport port-security maximum 1
B.Switch1（config）# mac-address-table secure
C.Switch1（config）# access-list 10 permit ip host
D.Switch1（config-if）# switchport port-security violation shutdown
E.Switch1（config-if）# ip access-group 10

4.多項(xiàng)選擇題Why does the data communication industry use the layered OSI reference model? (Choose two.)（）

A.It divides the network communication process into smaller and simpler components， thus aiding component development， design， and troubleshooting.
B.It enables equipment from different vendors to use the same electronic components， thus saving research and development funds.
C.It supports the evolution of multiple competing standards， and thus provides business opportunities for equipment manufacturers.
D.It encourages industry standardization by defining what functions occur at each layer of the model.
E.It provides a means by which changes in functionality in one layer require changes in other layers.