813 v200题库 25题进来看看吧

s_niper

QUESTION 25

The Company switches are configured to use VTP. What's true about the VLAN trunking protocol (VTP)?
(Select two)

A.  VTP messages will not be forwarded over nontrunk links.
B.  VTP domain names need to be identical. However, case doesn't matter.
C.  A VTP enabled device which receives multiple advertisements will ignore advertisements with higher
configuration revision numbers.
D.  A device in "transparent" VTP v.1 mode will not forward VTP messages.
E.  VTP pruning allows switches to prune VLANs that do not have any active ports associated with them.

Answer: AD

Section: Implement VLAN based solution, given a network design and a set of requirements

Explanation/Reference:

VTP message只能通过trunk转发。
VTPv1中transparent会检查VTP message中的domain name和version,只有相一致时才会转发.所以，D选项
不太准确。

我说选AE不好么？

tfsy

我有同样的疑问  我个人认为题库答案有误，应该是A E

A正确应该没有疑问，重点是D和E   我感觉D是错的  因为Transparent模式下，依然会Forward收到的VTP advertisments  但是它不会advertise自己的vlan信息

有人曾经这样回答我： D选项的关键是vtp v1 流经透明模式交换机的vtp它不会转发直接丢弃

我得到的信息是这样的  
Version-Dependent Transparent Mode - In VTP Verion 1,VTP transparent switch inspects VTP mesasges that only if the version and domain name is match.But In VTP Version 2 only supports one domain,so VTP transparent switch forward VTP messages without inspecting version and domain name.Version 1，透明模式交换机转发VTP信息必须域名相同才转发.Version 2，透明模式交换机不查看VTP域名就转发VTP信息.

所以D选项是有问题的。

有高手解答，为什么E是错误的吗

sijian1990

明天考试 觉得E是正确的 题库上有些题目解析上是一个答案 答案却是另一个 难免人为失误

s_niper

嗯，那就选AE了，我考试也这么写

zchuestc

E选项是错误的，VTP修剪的是没有被分配端口的VLAN的流量，注意是流量而不是VLAN。

云中之舟

rickzhou

5楼是大神！！