單項選擇題In which solution is a router ACL used?()

A. protecting a server frome unauthorized acces
B. controlling path selection,based on the route metric
C. reducing router CPU utilization
D. filterring packets that are passing through a router


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1.單項選擇題Which command can be used from a PC to verfy the connectivity between host that connect through path?()

A. tracert address
B. ping address
C. arp address
D. traceroute address

2.單項選擇題What is the function of the command switchport trunk native vlan 999 on a switch?()

A. It designates VLAN 999 for untagged traffic.
B. It blocks VLAN 999 traffic from passing on the trunk.
C. It creates a VLAN 999 interface.
D. It designates VLAN 999 as the default for all unkown tagged traffic.

4.單項選擇題Which command can you use to manually assign a static IPV6 address to a router interface?()

A. ipv6 address PREFIX_1::1/64
B. ipv6 autoconfig 2001:db8:2222:7272::72/64
C. ipv6 autoconfig
D. ipv6 address 2001:db8:2222:7272::72/64

5.單項選擇題Why will a switch never learn a broadcast address?()

A. Broadcast frames are never sent to swiches.
B. Broadcast addresses use an incorrect format for the switching table.
C. A broadcast address will never be the source address of a frame.
D. Broadcasts only use network layer addressing.
E. A broadcast frame is never forwarded by a switch.

6.單項選擇題Which parameter can be tuned to affect the selection of a static route as a backup.when a dynamic protocol is also being used?()

A. link bandwidth
B. hop count
C. link cost
D. administrative distance
E. link delay

7.單項選擇題VLAN 3 is not yet configured on your switch.What happens if you set the switchport access vlan 3 commmand interface configuration mode?()

A. The command is accepted and the respective VLAN is added to vlan dat.
B. The command is rejected.
C. The command is accepted and you must configure the VLAN manually.
D. The port turns amber.

8.單項選擇題The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?()

A. 10.10.0.0/18 subnetted with mask 255.255.255.252
B. 10.10.0.0/25 subnetted with mask 255.255.255.252
C. 10.10.0.0/24 subnetted with mask 255.255.255.252
D. 10.10.0.0/23 subnetted with mask 255.255.255.252
E. 10.10.0.0/16 subnetted with mask 255.255.255.252

9.單項選擇題Which component of VPN technology ensures that data can be read only by its intended recipient?()

A. data integrity
B. encryption
C. key exchange
D. authentication

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Which command encrypts all plaintext passwords?()

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Which statement is true, as relates to classful or classless routing?()

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How are VTP advertisements delivered to switches across the network?()

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What is the subnetwork address for a host with the IP address 201.100.5.68/28?()

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Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?()

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When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()

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After the show ip route command has been entered,the follwing routes are displayed.Which route will not be entered into the routing table of a neighboring router?()

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