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.
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Question 7:
D. One of the two switches must be configured as a VTP server.
This is incorrect. Two switches both in client mode can share VTP database information, overwrite based on revision number, etc. VTP server is not required.
@sheep
yeap. also keep in mind that there could be only 2 switches. how can you update the VLAN database if they both are in client mode?
tricky question
q9– not sure what it is asking == transparent mode, server mode, client mode == all forward the information — Is the question stating that when you change modes ? huh?–
q9 does not state what the mode was before — default is server mode — Is the question just asking what can be done in client mode?
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48 ques for exams including 3 simulation, I had EIGRP, Acesslist2 and VTP. Make sure the practice the simulation, use packet tracer or gns3. Best wishes to all!
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.
can someone please tell me why this is right? I have looked around elsewhere and they contradict. here is a link https://learningnetwork.cisco.com/thread/25329
thank you early and thank you 9 tut
Bcz VTP operation mode is Client, u can’t update anything on this mode
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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.
pls some one tell me why D is not an answer ??
Just passed the CCNA Exam last june 29 friday. I have encountered ACL, EIGRP, VTP. In VTP sim, there was a question about a switchX in client mode having revision 7, the switch3 in server mode having revision 6. If the switchx in client mode will be reconnected to the network, what will happen to the vlan listed on the network? will the network retain the vlan list on switch3? or will it adopt the vlan list of switchX? or will it have both?
@JEM
i think it will adopt the vlan list of switch X as it is in server mode so it can modify the config sent by client
but switch in client mode cannot generate advertisements so switch 3 will retain the config.
@jem
VTP sim by 9tut was different in your VTP sim exam?
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Q2 is not correct. Answer A states:
“A switch in the VTP client mode cannot update its local VLAN database.”
That’s false. A switch in client mode HAS to be able to update its vlan database. That’s the whole point of VTP. The server sends out updates to other servers and clients, and as long as the rev# of the server sending out the updates is HIGHER than the switches it’s sending to, those switches will update their VLAN database (assuming they’re in either client or server mode).
Q6 Here’s the deal. What they’re using is an older switch. For older IOS, the syntax is:
s1#vlan database
s1(vlan)#vtp [client|server|transparent]
s1(vlan)#vlan x
For modern IOS, here’s the syntax:
s1(config)#vlan x
s01(config)#vtp mode server (or cilent or transparent)
@Anonymous
in Q2 answer A it’s true…
In a switch configured in client mode, you cant update vlan table typing (config)vlan 55 for example…
switch will reply that to insert new vlans, switch must be configured in server mode..
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Hello all! There is a mistake in question 6. It must be A B – correct answers, but not B E.
E. Switch(vlan)# vlan 50
There is not such configuration mode as (vlan) in cisco IOS. That’s why answer E isn’t correct.
But as for answer A:
A. Switch(config-if)# switchport access vlan 50
i can say that Vlan 50 will be created automatically as soon as we assign switchport to vlan 50 (if even vlan 50 has not been created yet).
What do you think about it?
I agree with BuSyTeR. A and B are the valid answers.
I check the web, and find that Switch(vlan)# vlan 50 is possible. It’s VLAN database mode. The usual one we see is config-vlan mode.
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Question 2)
A. A switch in the VTP client mode cannot update its local VLAN database.
switches in vtp client mode update their database when they receive updates from the server.
If it said “Vlans cannot be created or modified on switches in vtp client mode”, that would be correct
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@xallax
Which three statements about VTP features are true? (Choose three)
A-When properly configured, VTP minimizes VLAN misconfigurations and configuration inconsistencies
B-Each broadcast domain on a switch can have its own unique VTP domain
C-VTP works at Layer 3 of the OSI model and requires that a management VLAN IP address be configured.
D-When properly configured, VTP maintains VLAN configuration consistency and accelerates trunk link negotiation.
E-VTP pruning is used to increase available bandwidth in trunk links
F-Client, server, and transparent are valid VTP modes
G-To configure a switch to be part of two VTP domains, each domain must have its own passwords
@xallax
can you help me in answering these two question the first one is above
When a new trunk link is configured on an IOS based switch, which VLANs are allowed over the link?
A-By default, all defined VLANs are allowed on the trunk.
B-Each single VLAN, or VLAN range, must be specified with the switchport mode command.
C-Each single VLAN, or VLAN range, must be specified with the vtp domain command.
D-Each single VLAN, or VLAN range, must be specified with the vlan database command.
@xallax
Sorry for the many number of my questions
which of following is a characteristic of full-duplex communication?
A it is CSMA/CD network
B it is CSMA/CA network
C it is point to point only
D hub communication is done via full duplex
is it true the answer is D
@smart
q1:
A – correct
trunk links carry all vlan traffic unless specified otherwise
q2:
csma/cd is an ethernet mechanism for recovering after collisions. it is valid on shared media and the connections are half-duplex
csma/ca is a bluetooth/wlan mechanism for avoiding collisions. wireless connections are half-duplex
the word “hub” makes you think of half-duplex instantly. hubs were used to allow several devices to use the same medium (precursor of switches). the links were half-duplex
if you are to have a full-duplex communication then there have to be a maximum of 2 devices using the same medium (as seen in p2p connections).
C is correct
@xallax
tanks alot
how about this questions :
Which three statements about VTP features are true? (Choose three)
are the correct ansswer A E F
@smart86
A-When properly configured, VTP minimizes VLAN misconfigurations and configuration inconsistencies
true, tha’s the main purpose of vtp
B-Each broadcast domain on a switch can have its own unique VTP domain
no, a swtch can be part of a single vtp domain at any given time
C-VTP works at Layer 3 of the OSI model and requires that a management VLAN IP address be configured.
nope, vtp works at layer2 and needs just MAC addresses
D-When properly configured, VTP maintains VLAN configuration consistency and accelerates trunk link negotiation.
nope, it wont interfere with other process
E-VTP pruning is used to increase available bandwidth in trunk links
yes, if the vlan is not in use then there is no need to forward broadcasts or even keep that vlan as active
F-Client, server, and transparent are valid VTP modes
those are the only 3 modes
G-To configure a switch to be part of two VTP domains, each domain must have its own passwords
false. see B
@9tut at Q3 i m not able to choose 2 answers on the flash version.