多項(xiàng)選擇題Which of the following statements are correct in regard to classless routing protocols?（）

A. Discontiguous subnets are not allowed.
B. Variable length subnet masks are allowed.
C. RIP v1 is a classless routing protocol.
D. IGRP supports classless routing within the same autonomous system.
E. RIP v2 supports classless routing.


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1.單項(xiàng)選擇題Which one of the following statements best explains the split horizon rule used in distance vector routing protocols?（）

A. Only routers can split boundaries (horizons) between concentric networks.
B. Each AS must keep routing tables converged to prevent dead routes from being advertised across boundaries.
C. Networks can only remain fully converged if all information is sent out all active interfaces.
D. Information about a route should not be sent back in the direction from which the original update came.
E. Distance vector protocols need fall back routers that are responsible for momentary loops.

2.單項(xiàng)選擇題What kind of packets does OSPF send to keep up connectivity with its neighboring routers?（）

A. SPF packets
B. hello packets
C. keepalive packets
D. dead interval packets
E. LSU packets

3.多項(xiàng)選擇題What kind of information does a router running a link-state routing protocol need to create and maintain its topological database?（）

A. LSAs from other routers
B. Beacons received on point-to-point links
C. hello packets
D. Routing tables received from neighbors
E. SAP packets sent by other routers
F. TTL packets from exclusive routers

4.單項(xiàng)選擇題In a point-to point network, which address are OSPF hello packets sent to?（）

A.127.0.0.1
B.192.168.0.5
C.223.0.0.1
D.172.16.0.1
E.224.0.0.5
F.254.255.255.255.255

5.單項(xiàng)選擇題The Testking router is running both RIP and IGRP, and the same route is learned by this router from both of these methods. However, when you issue the command"show ip route" you see only the IGRP route, and not the RIP route. Why is this?（）

A. IGRP has a faster update timer.
B. IGRP has a lower administrative distance.
C. RIP has a higher metric value for that route.
D. The IGRP route has fewer hops.
E. The RIP path has a routing loop.

最新試題

What is the purpose of pressing the Ctrl+Break keys during the router password recover procedure?（）

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A technician at TestKing needs to update the network documentation. One of the tasks includes documenting the name of the IOS image file of each router in the network.Which commands could be used to find this information?（）

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The following access list was applied outbound on he E0 interface connected to the 192.168.1.8/29 LAN:access-list 123 deny tcp 192.168.1.8 0.0.0.7 eq 20 anyaccess-list 123 deny tcp 192.168.1.9 0.0.0.7 eq 21 anyWhat effect will this access list have?（）

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Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational? （）

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What is a global command?（）

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TestKing.com has allocated the IP add 199.144.27.0 is its network, to provide flexibility for the LAN design, a subnet mask of 255.255.255.240 has been chosen. Which of the following address can be assigned to LAN on the resulting subnets.（）

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What should the configuration register value be after successfully completing the password recover procedure and returning the router to normal operation? （）

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Which of the following statements regarding routed and routing protocols are true?（）

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Which characteristics are representative of a link-state routing protocol?（）

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The network 172.12.0.0 needs to be divided into subnets where each subnet has the capacity of 458 IP addresses.What would be the correct subnet mask to accomplish this division keeping the number of subnets at the maximum? （）

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