Question 1
When a Cisco Catalyst switch that is configured in VTP server mode is first booted, which two VLAN ranges are loaded on the switch?
A. All VLANs are in the VLAN database
B. VLANs greater than 1005 in the startup-config file
C. The first 1005 VLANs in the VLAN database file
D. The first 1005 VLANs in the startup-config file
E. VLANs greater than 1005 in the VLAN database file
Answer: B C
Explanation
During switch boot up, the switch compares the content in the vlan.dat file and the configuration in startup-config to determine if it should use the configuration in vlan.dat or startup-config. When you save VTP mode, domain name, and VLAN configurations in the switch startup configuration file and reboot the switch, the VTP and VLAN configurations are selected by these conditions:
+ If both the VLAN database and the configuration file show the VTP mode as transparent and the VTP domain names match, the VLAN database is ignored. The VTP and VLAN configurations in the startup configuration file are used. The VLAN database revision number remains unchanged in the VLAN database.
+ If the startup VTP mode is server mode, or the startup VTP mode or domain names do not match the VLAN database, VTP mode and VLAN configuration for the first 1005 VLANs are selected by VLAN database information, such as the vlan.dat file. VLANs greater than 1005 are configured from the switch configuration file (startup-config file).
Question 2
Which two options are advantages of deploying VTPv3? (Choose two)
A. It stores the VTP domain password securely as a SHA-1 hash
B. It adds an FCS field at the end of each VTP frame for consistency checking
C. It supports the propagation of private VLANs
D. It supports the use of AES to encrypt VTP messaging
E. It can be configured to allow only one VTP server to make changes to the VTP domain
Answer: C E
Question 3To provide security, a service provider various private VLANs in its backbone network infrastructure to prevent certain VLANs communicating to each other. Which version of VTP supports the use of private VLANs?
A. version 1
B. version 3
C. VTP does not support private VLANs
D. version 2
Answer: B
Question 4What action should a network administrator take to enable VTP pruning on an entire management domain?
A. Enable VTP pruning on any switch in the management domain.
B. Enable VTP pruning on any client switch in the management domain.
C. Enable VTP pruning on a VTP server in the management domain.
D. Enable VTP pruning on every switch in the management domain.
E. Disable VTP pruning on a VTP server in the management domain.
Answer: C
Explanation
VTP pruning should only be enabled on VTP servers, all the clients in the VTP domain will automatically enable VTP pruning -> C is correct.
Question 5
Refer to the exhibit.
If switch SW6 is operating VTP Server and the other devices have the same configuration as SW4, which statement about the VLANs network is true?
| SW4# show run | include vtp vtp mode client vtp domain cisco vtp domain ciscotest vtp pruning vtp version 3 |
A. Traffic on VLANs 1 through 9 is flooded to all switches in the network
B. VLANs 1 through 101 are operational on all switch trunks
C. VLANs 1 through 9 are pruned on the link between SW1 and SW4
D. VLANs 1 through 101 are pruned on the link between SW1 and SW2
Answer: C
Explanation
In fact this is an unclear question. VLAN 1 (and VLANs 1002 to 1005) are always pruning-ineligible (even when VLAN 1 is not the native VLAN) so answers C D are not correct.
But answers A and B are not correct too as VLANs 2 through 9 are pruned (at least on SW1).
Maybe the author of this question forgot that VLAN 1 is pruning-ineligible. If so the best choice should be C.
Question 6
Which statement about the VTPv2 is true?
A. It supports the use of multiple instances
B. It propagates VLANs 1-1005 only
C. It can be enabled on a per-port basis
D. It performs consistency checks only when a new VLAN information is obtained from a VTP message or when information is read from NVRAM
E. It can be enabled on a per-interface basis
Answer: B
Explanation
In addition to propagating VTP information, version 3 can propagate Multiple Spanning Tree (MST) protocol database information. A separate instance of the VTP protocol runs for each application that uses VTP -> Only VTPv3 supports multiple VTP instances -> Answer A is not correct.
VTP version 1 and version 2 support only normal-range VLANs (VLAN IDs 1 to 1005). VTP version 3 supports the entire VLAN range (VLANs 1 to 4094). Extended range VLANs (VLANs 1006 to 4094) are supported only in VTP version 3. You cannot convert from VTP version 3 to VTP version 2 if extended VLANs are configured in the domain.
Only VTPv3 allows to turn on/off per-port basis -> Answers C, E are not correct.
Consistency Checks: In VTP version 2, VLAN consistency checks (such as VLAN names and values) are performed only when you enter new information through the CLI or SNMP. Consistency checks are not performed when new information is obtained from a VTP message or when information is read from NVRAM. Therefore answer D is not correct.
Question 7
Which two statements about extended-range VLANs are true? (Choose two)
A. Created in VTP server mode in VTP version 3.
B. Created when switch is in VTP server mode.
C. They support pruning.
D. VTP version 3 stores extended-range VLAN in VLAN database.
E. VTP version 1 and 2 stores extended-range VLAN in VLAN database.
Answer: A D
Explanation
In VTP versions 1 and 2, the switch must be in VTP transparent mode when you create extended-range VLANs. VTP version 3 also supports creating extended-range VLANs in client or server mode -> Answer A is correct.
Extended-range VLANs range from 1006-4094, inclusive. However, if using VTPv1 or VTPv2, these additional VLANs cannot be configured in VLAN database mode, nor stored in the vlan.dat file, nor advertised through VTP (so answer E is not correct). In fact, to configure them, the switch must be in VTP transparent mode. VTPv3 removes these limitations: Both normal- and extended-range VLANs can be advertised by VTPv3. Also, with VTPv3, information about all VLANs is again stored in the vlan.dat file in Flash -> Therefore VTPv3 stores the extended-range VLAN in VLAN database (vlan.dat file).
Reference: CCIE Routing and Switching v5.0 Official Cert Guide, Volume 1, Fifth Edition
VLAN 1 and VLANs 1002 to 1005 are always pruning-ineligible; traffic from these VLANs cannot be pruned. Extended-range VLANs (VLAN IDs greater than 1005) are also pruning-ineligible -> Answer D is correct.
Reference: https://www.cisco.com/c/en/us/support/docs/lan-switching/vtp/10558-21.html
Question 8
Which two statements about VTP modes are true? (Choose two)
A. Private VLANs are supported on devices that run VTP version 2 in transparent mode
B. Extended VLANs are supported only on devices that run VTP version 3 in server mode
C. When VTP pruning is enabled on a VTP server, it is enabled for the entire management domain
D. Extended VLANs are supported only on devices that run VTP version 3 in client mode
E. Private VLANs are supported on devices that run any version of VTP in server mode
Answer: A C
Explanation
VTP version 3 supports creating extended-range VLANs in client or server mode -> Answer B and D are not correct.
Private VLANs can only be configured when VTP is in transparent/off modes in VTP version 1 or 2 and in server/transparent/off modes in VTP version 3 when pruning is turned off -> Answer A is correct while answer E is not correct.
Question 9
Which two statements about VTP modes are true? (Choose two)
A. Private VLANs are supported on devices that run VTP version 2 in transparent mode
B. Extended VLANs are supported only on devices that run VTP version 3 in server mode
C. When VTP pruning is enabled on a VTP server, it is enabled for the entire management domain
D. Extended VLANs are supported only on devices that run VTP version 3 in client mode
E. Private VLANs are supported on devices that run any version of VTP in server mode
Answer: A C
Explanation
VTP version 3 supports creating extended-range VLANs in client or server mode -> Answer B and D are not correct.
Private VLANs can only be configured when VTP is in transparent/off modes in VTP version 1 or 2 and in server/transparent/off modes in VTP version 3 when pruning is turned off -> Answer A is correct while answer E is not correct.
Question 10
Which three new features of VTPv3 are true? (Choose three)
A. It offers better administrative control over which device is allowed to update other devices view of VLAN topology.
B. Unintended and disruptive changes are reduced and availability has increased.
C. The functionality of the VLAN environment has been expanded.
D. It supports up to VLAN range of 2094.
E. The functionality of the VLAN environment has reduced for improvement.
Answer: A B C
Explanation
Much work has gone into improving the usability of VTP version 3 in three major areas:
+ The new version of VTP offers better administrative control over which device is allowed to update other devices’ view of the VLAN topology. The chance of unintended and disruptive changes is significantly reduced, and availability is increased. The reduced risk of unintended changes will ease the change process and help speed deployment.
+ Functionality for the VLAN environment has been significantly expanded. Two enhancements are most beneficial for today’s networks:
– In addition to supporting the earlier ISL VLAN range from 1 to 1001, the new version supports the whole IEEE 802.1Q VLAN range up to 4095.
– In addition to supporting the concept of normal VLANs, VTP version 3 can transfer information regarding Private VLAN (PVLAN) structures.
+ The third area of major improvement is support for databases other than VLAN (for example, MST).