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CCNA640-802题库解析–RIPv1和RIPv2的区别
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下一篇 2008-06-11 14:58:59
本文主要是结合例题讲解RIPv1和RIPv2的区别。Which three statements are correct aboutRIPversion 2? (Choose three.)A:It has the same maximum hop count as version 1.B:It uses broadcasts for its routing updates.C:It is aclasslessrouting protocol.D:It has a lower default administrative distance than RIP version 1.E:It supportsauthentication.F:It does not send the subnet mask in updates.Correct Answers:A, C, E关于RIPv2，首先要了解他是一个无类的路由协议，在发送路由更新的时候是携带掩码的。他的metric的计算方式和RIPv1的相同，仍然是根据跳数的，但是他的跳数范围扩大了，RIPv1的为16跳，而RIPv2的为255跳。RIPv1是以广播的形式发送更新的，在RIPv2中采用的是组播，地址为224.0.0.9。RIPv2是支持认证的，而在RIPv1中是没有这个功能的。RIPv2是可以关闭自动汇总的，而在RIPv1中是不能关闭的。Which three statements describe the differences between RIP version 1 and RIP version 2? (Choose three.)A:RIP version 1 broadcasts updates whereas RIP version 2 uses multicasts.B:RIP version 1 multicasts updates while RIP version 2 uses broadcasts.C:Both RIP version 1 and RIP version 2 are classless routing protocols.D:RIP Version 2 is a classless routing protocol whereas RIP version 1 is aclassfulrouting protocol.E:Both RIP version 1 and version 2 support authentication.F:RIP version 2 sends the subnet mask in updates and RIP version 1 does not.Correct Answers:A, D, FRIPV1发送广播路由更新，RIPV2采用组播路由更新RIPV2是无类路由选择协议，RIPV1是有类路由选择协议RIPV2发送带子网掩码的路由更新条目,RIPV1在发送更新时不带子网掩码Refer to the exhibit. What is the most likely reason for the disparity between the actualnetworknumbers at the branches and theroutesin the routing table on Gateway_Router?
A: Gateway_Router is configured to receive only RIPv1 updates.B: Gateway_Router is configured to only receive RIPv2 updates.C: Branch_Router2 is configured to send both RIPv1 and RIPv2 updates.D: Branch_Router1 is configured to only sendRIPv1updates.Correct Answers:D我们看路由表信息，一条汇总路由208.149.23.0/24，因为RIPv1有类的，更新包中不含掩码，不支持VLSM。
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