單項選擇題How many collision domains are shown（）。

A.one
B.two
C.three
D.four
E.six
F.fourteen


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1.單項選擇題

The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem？（）

A.The Gallant router has the wrong LM Itype configured
B.Inverse ARP is providing the wrong PVC information to the Gallant router
C.The S3 interface ofthe Steele router has been configured with the frame-relay encapsulation ietf command
D.The frame-relay map statement in the Attalla router for the PVC to Steele is not correct
E.The IP address on the serial interface of the Attalla router is configured incorrectly

2.多項選擇題Which are valid modes for a switch port used as a VLAN trunk (Choose three.)（）。

A.transparent
B.auto
C.on
D.desirable
E.blocking
F.forwarding

3.單項選擇題Which statement is true about full-duplex Ethernet in comparison to half-duplex Ethernet（）。

A.Full-duplex Ethernet consists of a shared cable segment. Half-duplex Ethernet provides a point-to-point link.
B.Full-duplex Ethernet uses a loopback circuit to detect collisions. Half-duplex Ethernet uses a jam signal.
C.Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth.
D.Full-duplex Ethernet uses two wires to send and receive. Half-duplex Ethernet uses one wire to send and receive.

5.單項選擇題Why does RouterA show multiple unequal cost paths to network 192.168.81.0/24（）。

A.A variance was configured for EIGRP autonomous system 109.
B.The EIGRP topology table displays all routes to a destination.
C.The EIGRP topology table shows only backup routes to a destination.
D.Multiple floating static routes were configured to network 192.168.81.0 via interface Serial0.

6.多項選擇題What are the possible trunking modes for a switch port? （）

A.transparent
B.auto
C.on
D.desirable
E.client
F.forwarding

7.多項選擇題What should be done prior to backing up an IOS image to a TFTP server? （）

A.Make sure that the server can be reached across the network.
B.Check that authentication for TFTP access to the server is set.
C.Assure that the network server has adequate space for the IOS image.
D.Verify file naming and path requirements.
E.Make sure that the server can store binary files.
F.Adjust the TCP window size to speed up the transfer.

9.多項選擇題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? （）

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

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