單項(xiàng)選擇題For which type of connection should a straight-through cable be used?（）

A. switch to switch
B. switch to hub
C. switch to router
D. hub to hub
E. router to PC


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1.單項(xiàng)選擇題A system administrator installed a new switch using a script to configure it. IP connectivity was tested using pings to SwitchB. Later attempts to access NewSwitch using Telnet from SwitchA failed. Which statement is true?（）

A. Executing password recovery is required.
B. The virtual terminal lines are misconfigured.
C. Use Telnet to connect to RouterA and then to NewSwitch to correct the error.
D. Power cycle of NewSwitch will return it to a default configuration.

2.單項(xiàng)選擇題A host is attempting to send data to another host on a different network. What is the first action that the sending host will take?（）

A. Drop the data.
B. Send the data frames to the default gateway.
C. Create an ARP request to get a MAC address for the receiving host.
D. Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host.

3.單項(xiàng)選擇題When two hosts are trying to communicate across a network, how does the host originating the communication determine the hardware address of the host that it wants to "talk" to?（）

A. RARP request
B. Show Network Address request
C. Proxy ARP request
D. ARP request
E. Show Hardware Address request

4.單項(xiàng)選擇題Which network protocol does DNS use?（）

A. FTP
B. TFTP
C. TCP
D. UDP
E. SCP

5.單項(xiàng)選擇題Which statement describes the process of dynamically assigning IP addresses by the DHCP server?（）

A. Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.
B. Addresses are permanently assigned so that the hosts uses the same address at all times.
C. Addresses are assigned for a fixed period of time, at the end of the period, a new request for an address must be made.
D. Addresses are leased to hosts, which periodically contact the DHCP server to renew the lease.

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

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What is the purpose of the cisco Vlan Trunking protocol?（）

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

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Which pairing reflects a correct protocol-and-metric relationship?（）

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A router receives information about network 192.168.10.0/24 from multiple sources.What will the router consider the most reliable information about the path to that network?（）

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Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?（）

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An employee of ABC company has move to an office on a different floor. Although the administrator is able to telnet to all of the routers,the address of Switch F is needed in order to verify that the employee remains in the same VLAN.Which action could be used by the administrator to find the IP address of Switch F?（）

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A network administrator is trying to add a new router into an established OSPF network.The networks attached to the new router do not appear in the routing tables of the other OSPF routers.Given the information in the partial configuration shown below,what configuration error is causing this problem?（）Router(config)#router ospf 1Router(config-router)#network 10.0.0.0 255.0.0.0 area 0

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Which statement describes the rule of split horizon?（）

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At which layer of the OSI model dose PPP perform?（）

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