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QUESTION 82
Switch CK1 is configured to use the VLAN Trunking Protocol (VTP). What does CK1 advertise in its VTP domain?
A. The VLAN ID of all known VLANs, the management domain name, and the total number of trunk links on the switch.
B. The VLAN ID of all known VLANs, a 1-bit canonical format (CF1 Indicator), and the switch configuration revision number.
C. The management domain name, the switch configuration revision number, the known VLANs, and their specific parameters.
D. A 2-byte TPID with a fixed value of 0x8100 for the management domain number, the switch configuration revision number, the known VLANs, and their specific parameters.
E. None of the above.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation:
“Each switch participating in VTP advertises VLAN information, revision numbers, and VLAN parameters
on its trunk ports to notify other switches in the management domain.
VTP advertisements are sent as multicast frames. The switch intercepts frames sent to the VTP multicast
address and processes them with its supervisory processor VTP frames are forwarded out trunk links as a
special case.
The following global configuration information is distributed in VTP advertisements:
1.
VLAN IDs (ISL and 802.1Q)
2.
Emulated LAN names (for ATM LANE)
3.
802.10 SAID values (FDDI)
4.
VTP domain name
5.
VTP configuration revision number
6.
VLAN configuration, including maximum transmission unit (MTU) size for each VLAN
7.
Frame format Reference: CCNP Switching Exam Certification Guide: page 115, David Hucaby & Tim Boyles, Cisco Press 2001, ISBN 1-58720 000-7 Incorrect Answers: A: The total number of trunk links is not advertised.
B: A CFI is not advertised.
D: The TPID is not advertised. The value of 0x8100 is used to identify an 802.1Q trunking tag.
QUESTION 83
VTP switches use advertisements to exchange information with each other. Which of the following advertisement types are associated with VTP? (Select all that apply)
A. Domain advertisements
B. Advertisement requests from clients
C. Subset advertisements
D. Summary advertisements
Correct Answer: BCD Section: (none) Explanation
Explanation/Reference:
Explanation:
VTP advertisements include:
1.
Summary Advertisements – These go out every 5 minutes or ever time the VLAN
topology changes, and lists of information about the management domain (VTP version, domain name,
configuration revision number, timestamp, MD5 encryption hash code, & number of subset advertisements
incoming). When there is a configuration change, summary advertisements are complimented by or more
subset advertisements.
2.
Subset advertisements – These are sent out by VTP domain servers after a
configuration change. They list the specifics of the change (VLAN creation / deletion / suspension /
activation / name change / MTU change) and the VLAN parameters (VLAN status, VLAN type, MTU, VLAN
name, VLAN number, SAID value).
3.
Advertisement Requests from Clients- VTP clients request specific VLAN information
that they’re lacking (ie. Client switch is reset and loses its database, or VTP domain membership changes)
so they can be responded by summary and subset advertisements.
Reference: CCNP Switching Exam Certification Guide: pages 116-117 David Hucaby & Tim Boyles, Cisco
Press 2001, ISBN 1-58720 000-7
QUESTION 84
Switch CK1 is part of the Certkiller VTP domain. What’s true of VTP Pruning within this domain? (Select all that apply)
A. It does not prune traffic from VLANs that are pruning-ineligible
B. VLAN 1 is always pruning-eligible
C. it will prune traffic from VLANs that are pruning-ineligible
D. VLAN 2 is always pruning-ineligible
E. None of the above.
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation:
By definition, pruning-ineligible VLANs can not be pruned. You can make specific VLANs pruning ineligible
with the clear vtp pruneeligible vlan_range command. By default, VLANs 2-1000 are pruning-eligible. Since
the default VLAN for any switch port in a Catalyst switch is VLAN 1, it is not eligible for pruning.
Incorrect
Answers:
B: VLAN 1 is always pruning-ineligible
C: The opposite is true.
D: By default, VLANs 2-1000 are eligible to be pruned.
QUESTION 85
What action should you execute if you wanted to enable VTP pruning on your entire management domain?
A. Enable VTP pruning on any client switch in the management domain.
B. Enable VTP pruning on any switch in the management domain.
C. Enable VTP pruning on every switch in the management domain.
D. Enable VTP pruning on a VTP server in the management domain.
E. Disable VTP pruning on a VTP server in the management domain.
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
Explanation: Enabling VTP pruning on a VTP server allows pruning for the entire management domain. Enabling this on the VTP server will mean that the VTP pruning configuration will be propagated to all VTP client switches within the domain. VTP pruning takes effect several seconds after you enable it. By default, VLANs 2 through 1000 are pruning-eligible. Reference: Building Cisco Multilayer Switched Networks (Cisco Press) page 117
QUESTION 86
Switch CK1 is configured with VTP. Which two VTP modes will make CK1 capable of creating and deleting VLANs on itself? (Select two)
A. Client
B. Server
C. Transparent
D. Pass-through
E. No-negotiate
Correct Answer: BC Section: (none) Explanation
Explanation/Reference:
Explanation:
VTP Modes
You can configure a switch to operate in any one of these VTP modes:
1.
Server-In VTP server mode, you can create, modify, and delete VLANs and specify other configuration parameters (such as VTP version) for the entire VTP domain. VTP servers advertise their VLAN configuration to other switches in the same VTP domain and synchronize their VLAN configuration with other switches based on advertisements received over trunk links. VTP server is the default mode.
2.
Client-VTP clients behave the same way as VTP servers, but you cannot create, change, or delete VLANs on a VTP client.
3.
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. However, in VTP version 2, transparent switches do forward VTP
advertisements that they receive out their trunk interfaces.
If you configure the switch as VTP transparent, you can create and modify VLANs but the changes affect
only the individual switch.
Incorrect
Answers:
A: Clients can not modify, add, or delete any VLAN information. D, E: These options are not valid VTP modes.
QUESTION 87
When the Catalyst switch CK1 is enabled to use VTP, which information does it advertise on its trunk ports? (Select two)
A. VTP mode
B. STP root status
C. Negotiation status
D. Management domain
E. Configuration revision number
Correct Answer: DE Section: (none) Explanation
Explanation/Reference:
Explanation: The VTP protocol maintains VLAN configuration consistency throughout the network by distributing VLAN information to the network. VLAN information is sent to network devices in advertisements that contain the VTP management domain name, the current configuration revision number, the VLANs that the server knows about, and certain VLAN parameters. Any time you change a VLAN, VTP automatically sends an advertisement to update all other network devices. The following global configuration information is distributed in VTP advertisements:
1.
VLAN IDs (ISL and 802.1Q)
2.
Emulated LAN names (for ATM LANE)
3.
802.10 SAID values (FDDI)
4.
VTP domain name
5.
VTP configuration revision number
6.
VLAN configuration, including maximum transmission unit (MTU) size for each VLAN
7.
Frame format Reference: Cisco, Configuring VTP http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_6_1/config/vtp.htm
QUESTION 88
Is the following statement True or False?
MLS requires that MLS components be in the same VTP domain.
A. False
B. There is not enough information to determine
C. True
D. It could be true or false, depending on the type of switch.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation:
MLS requires that MLS components, including the end stations, must be in the same Virtual Trunking Protocol (VTP) domain. VTP is a Layer 2 protocol used for managing VLANs on several Catalyst switches from a central switch. It allows an administrator to create or delete a VLAN on all switches in a domain without having to do so on every switch in that domain. The MultiLayer Switching Protocol (MLSP), which the MLS-SE and the MLS-RP use to communicate with one another, does not cross a VTP domain boundary.
QUESTION 89
Which of the following VTP modes receives and forwards VTP updates, but does NOT participate in VTP synchronization?
A. Client
B. Server
C. Transparent
D. Pass-through
E. None of the above
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation: Transparent-VTP transparent network devices do not participate in VTP. A VTP transparent network device does not advertise its VLAN configuration and does not synchronize its VLAN configuration based on received advertisements. However, in VTP version 2, transparent network devices do forward VTP advertisements that they receive out their trunking LAN ports.
QUESTION 90
How can VTP pruning enhance network bandwidth?
A. By limiting the spreading of VLAN information.
B. By reducing unnecessary flooding of traffic to inactive VLANs.
C. By disabling periodic VTP updates.
D. By restricting unicast traffic to across VTP domains.
E. By updating unicast traffic periodically.
F. None of the above
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
Explanation:
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.
Reference:
http://www.cisco.com/en/US/products/hw/routers/ps368/
products_configuration_guide_chapter09186a0080091
QUESTION 91
Which of the following statements is NOT true regarding VTP?
A. Switches in VTP transparent mode will simply forward advertisements without processing them.
B. VTP reduces administrative overhead.
C. VTP pruning reduces overall network traffic.
D. VTP pruning is on by default.
E. All of the above are true statements.
F. None of the above
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
Explanation:
By default, VTP pruning is disabled.
For VTP pruning to be effective, all devices in the management domain must either support VTP pruning
or, on devices that do not support VTP pruning, you must manually configure the VLANs allowed on
trunks.
Incorrect
Answers:
A: This statement is true. Transparent VTP switches do not participate in the VTP process, but they do forward VTP information to other switches. B, C: 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.
QUESTION 92
By what condition can a VTP version 2 switch operate in the same domain as a switch running VTP version 1?
A. VTP version 2 is disabled on the VTP version 2-capable switch
B. VTP version 2 is enabled on the VTP version 2-capable switch
C. VTP version 1 is disabled on the VTP version 2-capable switch
D. None of the above. VTP version 1 and version 2 are not compatible.
E. None of the above
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation:
A VTP version 2-capable switch can operate in the same VTP domain as a switch running VTP version 1
provided VTP version 2 is disabled on the VTP version 2-capable switch (VTP version 2 is disabled by
default). With VTP version 2 disabled, the switch will revert to version 1 to become backward compatible.
QUESTION 93
Is the following statement True or False?
If you modified a VTP transparent switch, the changes you implement will affect all the switches in the
network?
A. True
B. There is not enough information to determine
C. False
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation:
According to Cisco:
If you configure the switch as VTP transparent, you can create and modify VLANs but the changes affect
only the individual switch. Transparent switches do not participate in VTP. Only changes made to a VTP
switch in server mode will be propagated to all the other client switches within the network.
QUESTION 94
Which of the following message types are associated with VTP header fields on a Cisco switched network? (Select all that apply)
A. Summary advertisements
B. Advertisement requests
C. VTP Join messages
D. Subset advertisement
E. None of the above.
Correct Answer: ABCD Section: (none) Explanation
Explanation/Reference:
Explanation:
The format of the VTP header can vary depending on the type of VTP message.
However, they all contain the following fields in the header: VTP protocol version: 1 or 2 VTP Message
Types: Summary advertisements, Subset advertisement, Advertisement requests, VTP join messages,
Management domain length, and Management domain name.
QUESTION 95
In order for the Certkiller network to use VTP, which of the following conditions have to be met? (Select all that apply)
A. Trunking must be enabled between all Catalyst switches.
B. The Catalyst switches must be non-adjacent for trunking to be possible between them
C. The Catalyst switches must be adjacent.
D. Each Catalyst switch in a domain should be assigned the same VTP domain name.
E. None of the above
Correct Answer: ACD Section: (none) Explanation
Explanation/Reference:
Explanation:
According to the online documentation provided by Cisco: In order to use VTP, you must assign a VTP
domain name to each switch. VTP information will remain only within the same VLAN domain. The
following are conditions for a VTP domain: -Each Catalyst switch in a domain should be assigned the same
VTP domain name.
-The Catalyst switches must be adjacent.
-Trunking must be enabled between all Catalyst switches.
If any one of the previous conditions is not met, the VTP domain is broken and information will not travel
between the two separate parts.
QUESTION 96
The Certkiller switches are all VTP enabled. What is true about VTP? (Select all that apply)
A. VTP version 2 is supported in supervisor engine software release 3.1(1) and later.
B. you must decide whether to use VTP version 1 or version 2.
C. VTP version 1 is supported in supervisor engine software release 2.1 or later
D. VTP version 1 is supported in ATM software release 3.1 or later.
E. None of the above
Correct Answer: ABCD Section: (none) Explanation Explanation/Reference:
Explanation:
According to Cisco Documentation:
If you use VTP in your network, you must decide whether to use VTP version 1 or version 2. VTP version 1
is supported in supervisor engine software release 2.1 or later and ATM software release 3.1 or later. VTP
version 2 is supported in supervisor engine software release 3.1(1) and later.
Reference:
http://www.cisco.com/en/US/products/hw/switches/ps679/
products_configuration_guide_chapter09186a008007
d
QUESTION 97
In the Certkiller switched network VTP pruning has been enabled. What is the purpose of VTP pruning?
A. Enhancing network integrity
B. Enhancing network bandwidth use
C. Deploying AAA
D. Enhancing network security
E. Enhancing network load balancing
F. None of the above
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
Explanation:
According to Cisco:
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.
QUESTION 98
Switches CK1 and CK2 are both configured for transparent mode in the VTP domain. Which statement accurately describes these transparent VTP switches? (Select all that apply):
A. They do not synchronize VLAN configuration based on received advertisements
B. They do not participate in VTP
C. They do not advertise VLAN configuration
D. None of the above
Correct Answer: ABC Section: (none) Explanation
Explanation/Reference:
Explanation:
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.
However, in VTP version 2, transparent switches do forward VTP advertisements that they receive out
their trunk ports.
QUESTION 99
You are configuring switch CK1 for VTP. Which of the following are valid VTP operating modes that can be configured on CK1 ? (Select all that apply)
A. Server
B. Front-end
C. Client
D. Transparent
E. Backbone
Correct Answer: ACD Section: (none) Explanation
Explanation/Reference:
Explanation:
There are only three VTP operating modes:
1) Server: These switches have full control in the creation and modification of VLANs.
Servers advertise out all the VLAN information they receive, and they configure
themselves in accord with whatever information they hear. Switches are in server mode by default.
2) Client: These switches listen to VTP advertisements, they modify their configuration as a result of what
they hear, and they forward out VTP information to neighboring switches; but they don’t have the ability to:
create, change, or delete VLANs.
3) Transparent: These switches don’t participate in the VTP process. They don’t advertise their VLAN
configurations and they don’t synchronize their database when they receive advertisements. In VTP
version 1 a switch doesn’t relay information it gets to the other switches but in VTP version 2 they do.
QUESTION 100
Which of the following are true regarding the default values of a switch that is configured for VTP pruning? (Select two).
A. VLAN 1-1000 are pruning-eligible
B. VLAN 2-1000 are pruning-eligible
C. VLAN 1 is pruning-eligible
D. VLAN 1 is pruning-ineligible
E. VLAN 1-1023 is pruning-eligible
F. VLAN 1-1023 is pruning-ineligible
Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
Explanation:
By default, VLANs 2-1000 are pruning-eligible. Since the default VLAN for any switch port in a Catalyst
switch is VLAN 1, it is not eligible for pruning.
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