CCNA – VTP Questions
Here you will find answers to VTP Questions
If you are not sure about VTP, please read my VTP tutorial
Question 1
Refer to the exhibit. After SwitchB was added to the network, VLAN connectivity problems started to occur. What caused this problem?
A. Both switches are in server mode in the same domain.
B. The revision number of SwitchB was higher than the revision number of SwitchA.
C. SwitchA was not rebooted prior to adding SwitchB to the network.
D. V2-mode is not enabled.
E. VTP pruning is not activated, so the new paths in the network have not been recalculated.
Answer: B
Explanation
SwitchB has the same VTP Domain Name with SwitchA and it has a higher Configuration Revision number (7 > 1) so it will overwrite VLAN information of SwitchA. Because SwitchB is a new switch so its VLAN information is different from SwitchA -> VLAN connectivity problem occurs.
Question 2
A network administrator is explaining VTP configuration to a new technician. What should the network administrator tell the new technician about VTP configuration? (Choose three)
A. A switch in the VTP client mode cannot update its local VLAN database.
B. A trunk link must be configured between the switches to forward VTP updates.
C. A switch in the VTP server mode can update a switch in the VTP transparent mode.
D. A switch in the VTP transparent mode will forward updates that it receives to other switches.
E. A switch in the VTP server mode only updates switches in the VTP client mode that have a higher VTP revision number.
F. A switch in the VTP server mode will update switches in the VTP client mode regardless of the configured VTP domain membership.
Answer: A B D
Question 3
What are two benefits of using VTP in a switching environment? (Choose two)
A.It allows switches to read frame tags.
B. It allows ports to be assigned to VLANs automatically.
C. It maintains VLAN consistency across a switched network.
D. It allows frames from multiple VLANs to use a single interface.
E. It allows VLAN information to be automatically propagated throughout the switching environment.
Answer: C E
Question 4
What is the name of the VTP mode of operation that enables a switch to forward only VTP advertisements while still permitting the editing of local VLAN information?
A. server
B. client
C. tunnel
D.transparent
Answer: D
Question 5
Which VTP mode is capable of creating only local VLANs and does not synchronize with other switches in the VTP domain?
A. client
B. dynamic
C. server
D. static
E. transparent
Answer: E
Question 6
An administrator is unsuccessful in adding VLAN 50 to a switch. While troubleshooting the problem, the administrator views the output of the show vtp status command, which is displayed in the graphic. What commands must be issued on this switch to add VLAN 50 to the database? (Choose two)
A. Switch(config-if)# switchport access vlan 50
B. Switch(config)#vtp mode server
C. Switch(config)# config-revision 20
D. Switch(config)#vlan 50 name Tech
E. Switch(vlan)# vlan 50
F. Switch(vlan)# switchport trunk vlan 50
Answer: B E
Explanation
First we notice that the “VTP Operating Mode” of this switch is “Client”. In this mode we can’t add new VLAN so we must change to “Server” mode -> B is correct.
Now we can add a new VLAN, E is the correct configuration for adding a new VLAN.
Question 7
To configure the VLAN trunking protocol to communicate VLAN information between two switches, what two requirements must be met? (Choose two)
A. Each end of the trunk line must be set to IEEE 802.1E encapsulation.
B. The VTP management domain name of both switches must be set the same.
C. All ports on both the switches must be set as access ports.
D. One of the two switches must be configured as a VTP server.
E. A rollover cable is required to connect the two switches together.
F. A router must be used to forward VTP traffic between VLANs.
Answer: B D
Explanation
In Cisco switches there are two encapsulations: 802.1q and ISL so we can set two ends to ISL instead -> A is not correct.
The ports between two switches must be set to trunk ports so that they can exchange VLAN information through VTP -> C is not correct.
To connect two switches we can use cross-over cable or straight-through cable (because modern Cisco switches can “auto-sense”) but not rollover cable -> E is not correct.
To forward traffic in the same VLAN (between two or more switches) we can use switches only. If we want to forward VTP traffic between different VLANs we can use either a router or a Layer 3 switch -> F is not correct.
Two switches can only communicate when they are set to the same VTP domain name (and the same VTP password) -> B is correct.
One of the two switches must be set to VTP Server so that it can create VTP updates and advertise its VLAN information.
Question 8
Which statements describe two of the benefits of VLAN Trunking Protocol? (Choose two)
A. VTP allows routing between VLANs.
B. VTP allows a single switch port to carry information to more than one VLAN.
C. VTP allows physically redundant links while preventing switching loops.
D. VTP simplifies switch administration by allowing switches to automatically share VLAN configuration information.
E. VTP helps to limit configuration errors by keeping VLAN naming consistent across the VTP domain.
F. VTP enhances security by preventing unauthorized hosts from connecting to the VTP domain.
Answer: D E
Explanation
The main purposes of VTP are to simplify switch administration and limit VLAN configuration errors by allowing switches to automatically share VLAN configuration information. It doesn’t require the administrator to go to every switch to configure VLANs.
Maybe you will feel F is also a correct answer but it is not true because VTP only enhances security by preventing unauthorized switches (not hosts) from connecting to the VTP domain (by configuring a VTP domain name & VTP password). An unauthorized host can easily use the network cable of an authorized host to access the network.
Question 9
What are two results of entering the Switch(config)#vtp mode client command on a Catalyst switch? (Choose two)
A. The switch will ignore VTP summary advertisements.
B. The switch will forward VTP summary advertisements.
C. The switch will process VTP summary advertisements.
D. The switch will originate VTP summary advertisements.
E. The switch will create, modify and delete VLANs for the entire VTP domain.
Answer: B C
Question 10
Refer to the exhibit. The show vtp status command is executed at a switch that is generating the exhibited output. Which statement is true for this switch?
A. The switch forwards its VLAN database to other switches in the ICND VTP domain.
B. The configuration revision number increments each time the VLAN database is updated,
C. The switch forwards VTP updates that are sent by other switches in the ICND domain,
D. The VLAN database is updated when VTP information is received from other switches.
Answer: C
Explanation
In Transparent mode switch just forwards update sent by other switches without reading it. It doesn’t update its VLAN database so the Configuration Revision doesn’t increase.
Question 11
Refer to the exhibit, The VLAN configuration of S1 is not being in this VTP enabled environment. The VTP and uplink port configurations for each switch are displayed. Which two command sets, if issued, resolve this failure and allow VTP to operate as expected? (choose two)
A. S2(config)#vtp mode transparent
B. S1(config)#vtp mode client
C. S2(config)#interface f0/24
S2(config-if)#switchport mode access
S2(config-if)#end
D. S2(config)#vtp mode client
E. S1(config)#interface f0/24
S1(config-if)#switchport mode trunk
S1(config-if)#end
Answer: B E
Explanation
First from the output of S1, we learn that it is running under “vtp transparent mode”. In this mode, S1 still receives VTP updates but not learns them. Also in this mode, no trunking is created -> It should be in client or server mode but S2 is already in server mode -> S1 should be in client mode -> B is correct.
Also, VTP updates are only sent on trunk links so the link between S1 and S2 must be set as trunk -> port f0/24 on S1 should be configured as trunked port -> E is correct.
Hello
I think Question 9 is incorrect..
The VTP Client can in fact Originate Summary Advertisements:
From the Cisco Course content: CCNA 3 LAN Switching and Wireless: Chapter 4, Section 4.2.3.3
VTP Advertisements
Summary Advertisements
The summary advertisement contains the VTP domain name, the current revision number, and other VTP configuration details.
Summary advertisements are sent:
Every 5 minutes by a VTP server OR CLIENT to inform neighboring VTP-enabled switches of the current VTP configuration revision number for its VTP domain
Hi everybody,I am Jesus.I have a question.
When a switch is configured as a vtp server,and we have another switch configured as a vtp client.If the vtp client has a higher revision number than the vtp server,the vtp client will update the vlan.dat of the vtp server.We know both switches have the same vtp domain and vtp password.
According to the theory,vtp server updates vlan database of vtp client.I want to know if this case is an exception.
Please,your comments.
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Question number 9 is correct because when a switch running vtp mode client command received an advertisement from another switch in the network so it will process the advertisement and it will forward the advertisement to other vtp clients. The same way a human hear something and process it and then speaks so this is the way CISCO VTP CLIENT Mode Operate
I think the CCNA pass!
Jesus I am Alex, look before connecting a new switch to an existing vtp domain, reset the new switch´s VTP revision number to 0, for that reason the vtp client has a higher revision number than the vtp server is not possible if everything is working well
In the exam, what MUST we choose in Q6, B & E? I agree with everyone that it SHOULD be A & B though.
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Q4. Is that the right answer because a switch in transparent mode will not permit the editing of its database, it will just forward the advertisement to another switch even though it can create vlans and update its own database but it will not forward the vlans created by it to another switch. I need clarification please on this.
Also for Q6, the A answer will create a new vlan as well so A is right too.
@ ruth, the answer in number is D. tried and test it in networking environment. try on packet tracer for your self to confirm…
Q:6 in my opinion yes the command can add vlan 50, but when you say switchport acess vlan your assigning a port to be a part of vlan ie: fa0/1. the question is add vlan 50 not in the interface port, so i thinks the answer is e,
its only my opinion… correct me if im wrong….
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@ bam. regarding Q6, you’re right the command shwitchport access vlan assigns a vlan to a port but for choice letter E it has a wrong configuration mode, it should be:
Switch(config)# vlan 50
not
Switch(vlan)# vlan 50
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Q6. @phil: You CAN actually create a vlan from Switch(vlan)# prompt. Try it…
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Thanks 9tut. I made it. I passed my CCNA 200-120 today. The sim is Access-list 1 , Access-list 2 & EIGRP. A lot of new questions like Netflow, Syslog, SNMP, VRRP, and GLBP.
Q6 @Bit: Interesting, you can create the vlan 50 from the Switch(config-vlan)# mode.
However the Switch(vlan)# prompt seems incorrect.
A is definitely valid, so I would go with A instead of E.
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I can open the vtp sim and get the questions but can not get the cli to lanch so I can show mac table any ideas why?
i figured out the answer to above… just type in the boxes but I have looked everywhere for the answer to this.
Sw-AC3#sh vtp status
VTP Version : 2
Configuration Revision : 7
Maximum VLANs supported locally : 255
Number of existing VLANs : 7
VTP Operating Mode: Client
VTP Domain Name : home-office
VTP Pruning Mode : Enabled
VTP V2 Mode : Diable
VTP Traps Generation : Disabled
MD5 digest : 0×22 0×07 0xF2 0x3A 0xF1 0×28 0xA0 0x5D
Configuration last modified by 0.0.0.0 at 3-1-93 00:28:35
Why is the sim showing 0.0.0.0 as the ip address for last modified. I ran vtp sim 2 twice and got 0.0.0.0 the first time and a valid ip to look up in sh cdp neig det the second time. Is this just a glitch?
9tut I also noticed on one of your explanations it showed config last modified as zeros but it did not matter for what you were explaining. What do we do if this happens on the exam?
@ Anonymous 0.0.0.0 represents the IP. So just use whatever IP shows up on your exam.
PROblem is that 0.0.0.0 is not in the show cdp neighbors so they dont correlate as they should
I read somewhere that this happened to someone in the exam and they reexecuted the sh vtp status and it appeared correctly. I will try this approach
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