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【单选题】

A router that performs Network Address Translation (NAT) is installed between your computer and the Internet.<br /> The router fails. You connect the computer directly to the Internet.<br /> You need to ensure that the computer is connected to the Internet in the most secure manner possible.<br /> What should you do?（）<br /> <img src="https://nimg.ppkao.com/2018-07/gelingxia/2018073115163674956.jpg?sign=4cd71031bf978f68f8824259f53a8925&t=62d17170" />

A、A

B、B

C、C

D、D

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更多“ A router that performs Network Address Translation (NAT) is installed between your computer and the Internet.<br /> The router fails. You connect the computer directly to the Internet.<br /> You need to ensure that the computer is connected to the Internet in the most secure manner possible.<br /> What should you do?（）<br /> <img src="https://nimg.ppkao.com/2018-07/gelingxia/2018073115163674956.jpg?sign=4cd71031bf978f68f8824259f53a8925&t=62d17170" />”相关的问题
第1题
[单选题] Refer to the exhibit. On the basis of the configuration that is provided, how would the BGP updates that come from router R1 be replicated inside autonomous system 65200？（）

A、All BGP updates that are received on router R 2 will be sent to routers R3 and R4. Routers R3 and R4 will then forward those BGP updates to router R5  B、None of the BGP updates that are received on router R2 will ever be received by router R5  C、All BGP updates that are received on router R2 will not be sent to routers R3 and R4  D、All BGP updates that are received on router R2 will be sent directly to router R5  

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第2题
[单选题] There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A's DIS priority is 64. The LAN is a Level 1-only link. Router D has just been powered up on that same LAN and its DIS priority is 80. Which statement is true?（）

A、Router A remains the DIS and generates a new pseudonode LSP for that LAN  B、Router A remains the DIS and NO new pseudonode LSP is generated for that LAN  C、Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A  D、Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A  

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第3题
[多选题] What are two examples of RE exception traffic?（）

A、BGP updates that travel through the local router and are destined for a remote router.  B、OSPF hello packets that are sent from a remote router and are destined for the local router.  C、Telnet traffic that is sent from a remote host and is destined for the local router.  D、Telnet traffic that travels through the local router and is destined for a remote end host.  

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第4题
[单选题] There are three IS-IS routers on a Gigabit Ethernet segment: Router A, Router B, and Router C. Each router is configured in the same area and each routers Gigabit Ethernet interface is configured for Level 1-only. Router A is the Designated Intermediate System (DIS). Each routers IP address on that segment is: Router A: 10.1.1.1/24 Router B: 10.1.1.2/24 Router C: 10.2.2.1/26 Which statement is true about all the adjacencies that exist on that LAN?（）

A、No routers are adjacent with each other.  B、Only Router A and Router B are adjacent at Level 1.  C、Only Router A and Router B are adjacent at Level 2.  D、All three routers are adjacent with each other at Level 1.  

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第5题
[多选题] Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true? （）

A、Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.  B、Router C will use ICMP to inform Router B that Host 2 cannot be reached.  C、Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.  D、Router C will send a Destination Unreachable message type.  E、Router C will send a Router Selection message type.  F、Router C will send a Source Quench message type.  

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第6题
[多选题] Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true?（）

A、Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.  B、Router C will use ICMP to inform Router B that Host 2 cannot be reached.  C、Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.  D、Router C will send a Destination Unreachable message type.  E、Router C will send a Router Selection message type.  F、Router C will send a Source Quench message type.  

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第7题
[多选题] Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true?（）

A、Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.  B、Router C will use ICMP to inform Router B that Host 2 cannot be reached.  C、Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.  D、Router C will send a Destination Unreachable message type.  E、Router C will send a Router Selection message type.  F、Router C will send a Source Quench message type.  

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第8题
[多选题] Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true (Choose two.)（）。

A、Router C will use ICMP to inform Host 1 that Host 2 cannot be reached  B、Router C will use ICMP to inform Router B that Host 2 cannot be reached  C、Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached  D、Router C will send a Destination Unreachable message type  E、Router C will send a Router Selection message type  F、Router C will send a Source Quench message type  

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第9题
[单选题] When troubleshooting an EIGRP connectivity problem, you notice that two connected EIGRP routers are not becoming EIGRP neighbors. A ping between the two routers was successful.What is the next thing that should be checked?（）

A、Verify that the EIGRP hello and hold timers match exactly.  B、Verify that EIGRP broadcast packets are not being dropped between the two routers with the show ip EIGRP peer command.  C、Verify that EIGRP broadcast packets are not being dropped between the two routers with the show ip EIGRP traffic command.  D、Verify that EIGRP is enabled for the appropriate networks on the local and neighboring router.  

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第10题
[单选题] Which command prompt indicates that you are in operational mode?（）

A、user@router&amp;  B、user@router#  C、user@router%  D、user@router>  

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