多項選擇題The network 172.25.0.0 has been divided into eight equal subnets. Which of the following IP addresses can be assigned to hosts in the third subnet if the ip subnet-zero command is configured on the router? （）

A.172.25.78.243
B.172.25.98.16
C.172.25.72.0
D.172.25.94.255
E.172.25.96.17
F.172.25.100.16


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1.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.

2.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

3.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.

5.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

8.多項選擇題How will router A choose a path to the 10.1.2.0/24 network when different routing protocols are configured (Choose three.)（）。

A.If RIPv2 is the routing protocol, only the path AD will be installed in the routing table by default.
B.If RIPv2 is the routing protocol, the equal cost paths ABD and ACD will be installed in the routing table by default.
C.If EIGRP is the routing protocol, only the path AD will be installed in the routing table by default.
D.If EIGRP is the routing protocol, the equal cost paths ABD and ACD will be installed in the routing table by default.
E.If EIGRP and OSPF are both running on the network, the EIGRP paths will be installed in the routing table.
F.If EIGRP and OSPF are both running on the network, the OSPF paths will be installed in the routing table.

9.多項選擇題Which of the following describe private IP addresses? （）

A.addresses chosen by a company to communicate with the Internet
B.addresses that cannot be routed through the public Internet
C.addresses that can be routed through the public Internet
D.a scheme to conserve public addresses
E.addresses licensed to enterprises or ISPs by an Internet registry organization

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