单选题Which multicast address does RIPv2 use for route updates by default？（）A 224.0.0.2B 224.0.0.5C 224.0.0.9D 255.255.255.255

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第3题：

Which configuration command assigns a host route to the CPE workstation address of 192.168.10.1 in a Bridged 1483 network?（）

• A、ip route 192.168.10.1 255.255.255.255 atm 6/2.1
• B、ip route 192.168.10.1 255.255.255.252 atm 6/2.1
• C、add route 192.168.10.1 255.255.255.252 atm 6/2.1
• D、add route 192.168.10.1 255.255.255.255 atm 6/2.1

正确答案:A

第4题：

Which three IP multicast group concepts are true?（）

• A、If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.
• B、A router does not have to be a member of a multicast group to receive multicast data.
• C、A router must be a member of a multicast group to send to the group.
• D、A router does not have to be a member of a multicast group to send to the group.
• E、If a packet is sent to a multicast group address, all members of the multicast group will rece ive it.
• F、A router must be a member of a multicast group to receive multicast data.

正确答案:D,E,F

第5题：

Which OSPF LSA type does an ASBR use to originate a default route into an area？ （）

• A、 LSA 1
• B、 LSA 3
• C、 LSA 4
• D、 LSA 5
• E、 LSA 7

正确答案:D

第6题：

Which three statements are true about EIGRP route summarization?（）

• A、When manual summarization is configured, the router immediately creates a route that points to null0 interface
• B、Manual route summarization  is configured in router configuration mode when the router is configured for EIGRP routing
• C、Manual route summarization is configured on the interface
• D、The ip summary - address eigrp command generates a default route with an administrative distance  of 5
• E、When manual summarization is configured, the summary route will use the metric of the largest specific metric of the summary routes
• F、The ip summary - address eigrp command generates a default route with an administrative distance of 90

正确答案:A,C,D

第7题：

Which multicast address does RIPv2 use for route updates by default?（）

• A、224.0.0.2
• B、224.0.0.5
• C、224.0.0.9
• D、255.255.255.255

正确答案:C

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第15题：

Which of the following commands would you use, to configure a default route to any destination NOT found in the routing table?（）

• A、Router(config)# ip default-route 0.0.0.0 255.255.255.255 s0
• B、Router(config)# ip route 0.0.0.0 255.255.255.255 s0
• C、Router(config)# ip default-route 0.0.0.0 0.0.0.0 s0
• D、Router(config)# ip route 0.0.0.0 0.0.0.0 s0
• E、Router(config)# ip route any any e0

正确答案:D

第16题：

What is the difference between the IPv6 addresses ：：/0 and ：：/128？（）

• A、：：/0 is the unspecified address， and ：：/128 is the multicast address
• B、：：/0 is the unicast address， and ：：/128 is the anycast address
• C、：：/0 is the unicast address， and ：：/128 is the multicast address
• D、：：/0 is the anycast address， and ：：/128 is the multicast address
• E、：：/0 is the default route， and ：：/128 is the unspecified address
• F、：：/0 is the anycast address， and ：：/128 is the default address

正确答案:E

第17题：

RIPv2 differs from RIPv1 in that：（）

• A、it uses multicast address 224.0.0.10，instead of broadcast
• B、it uses multicast address 224.0.0.9，instead of broadcast
• C、it can use either multicast or broadcast addresses，instead of just broadcast
• D、it sends incremental updates，instead of periodic updates
• E、it is classless，instead of classful
• F、it supports authentication，and RIPv1 does not

正确答案:B,E,F

第18题：

Which two statements are true about the primary address on an interface? （）

• A、It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface
• B、You use the primary address when you have multiple IP addresses belonging to the same subnet on the same inteface
• C、It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface
• D、By default, the primary address on an interface is selected as the nmerically highest local address configured on the interface

正确答案:A,C

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