單項選擇題assuming the default switch configuration which vlan range can be added modified and removed on a cisco switch?（）

A.2 through 1001
B.1 through 1001
C.1 through 1002
D.2 through 1005


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1.單項選擇題

Refer to the exhibit. SW1 and SW2 have default configurations. What will happen if host 1 sends a broadcast？（）

A. Hosts 2， 3， and 4 will receive the broadcast. 
B. Hosts 1， 2， 3， and 4 will receive the broadcast.
C. Host 2 and the Fa0/0 interface of R1 will receive the broadcast.
D. Hosts 1， 2 and the Fa0/0 interface of R1 will receive the broadcast. 
E. Hosts 1， 2， 3， 4 and interface Fa0/0 of R1 will receive the broadcast.
F. Hosts 2， 3， 4， and interfaces Fa0/0 and Fa0/1 of R1 will receive the broadcast.

2.單項選擇題which command is used to enable CHAP authentication whit PAP as the fallback method on a serialinterface?（）

A.(config-if)#authentication ppp chap fallback ppp
B.(config-if)#authentication ppp chap pap
C.(config-if)#ppp authentication chap pap
D.(config-if)#ppp authentication chap fallback ppp

3.單項選擇題Which parameter or parameters are used to calculate OSPF cost in cisco routers?（）

A.Bandwidth,Delay,and MTU
B.Bandwidth
C.Bandwidth and MTU
D.Bandwidth , MTU,Reliability,Delay,and Load

4.單項選擇題

Refer to the exhibit. A packet with a source IP address of 192.168.2.4 and a destination IP address of 10.1.1.4 arrives at the HokesB router. What action does the router take？（）

A. forwards the received packet out the Serial0/0 interface
B. forwards a packet containing an EIGRP advertisement out the Serial0/1 interface 
C. forwards a packet containing an ICMP message out the FastEthernet0/0 interface
D. forwards a packet containing an ARP request out the FastEthernet0/1 interface

5.多項選擇題What are two advantages of Layer 2 Ethernet switches over hubs？（）

A.decreasing the number of collision domains
B.filtering frames based on MAC addresses
C.allowing simultaneous frame transmissions
D.increasing the size of broadcast domains
E.increasing the maximum length of UTP cabling between devices