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.
Explanation:
VTP messages are only transmitted across trunk links.
If the receiving switch is in transparent mode, the configuration is not changed. Switches in
transparent mode do not participate in VTP. If you make VTP or VLAN configuration
changes on a switch in transparent mode, the changes are not propagated to the other
switches in the network.
Incorrect Answers:
B: The VTP domain name is case sensitive and it must be identical with the domain name
configured on the VTP server.
C: This is incorrect because if a VTP client receives an advertisement with a higher revision
number, it won’t ignore it. In fact, the advertisement with a higher revision level takes
precedence when the switch is configured in client mode.
E: VTP pruning enhances network bandwidth use by reducing unnecessary flooded traffic,
such as broadcast, multicast, unknown, and flooded unicast packets. VTP pruning increases
available bandwidth by restricting flooded traffic to those trunk links that the traffic must use
to access the appropriate network devices. It does not prune the individual VLANs.
I’m not sure I agree with the answer. Transparent mode propagates VTP messages it just does not act upon them. And VTP pruning does in fact allow pruning of VLAN’s which do not have active ports assigned to them. Consequently I think the answer is A and E… D should be incorrect.
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V2 does forward them however V1 does not
http://www.cisco.com/c/en/us/support/docs/lan-switching/vtp/10558-21.html
Transparent—VTP transparent switches do not participate in VTP. A VTP transparent switch does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements, but transparent switches do forward VTP advertisements that they receive out their trunk ports in VTP Version 2.
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ok what about the Option E ………..i think that is correct. but in answer it is not showing which is wrong i guess.
\please reply to my comment.
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If you refer to this:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/25ew/configuration/guide/conf/vtp.html#wp1020444
And figure 27-1 you`ll see that on Switch 2 the VLAN is not pruned. And that switch doesn`t have any active ports associated with the RED VLAN.
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Wrong A & E
VTPv1 in transparent mode DOES forward VTP frames IF the DOMAIN matches it own. However it does not act upon the VTP advertisement.
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A&E, with no doubt
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