Exam (elaborations)
CISCO VLAN TRUNKING PROTOCOL (VTP)
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CISCO VLAN TRUNKING PROTOCOL (VTP)
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CISCO VLAN TRUNKING PROTOCOL (VTP)What are the 6 basic components of VTP? - Answers-1. Mode
2. Domain
3. Version
4. Password
5. Advertisements
6. Pruning
What are VTP domains? - Answers-Areas that are determined to have common VLAN
requirements.
How many VTP domains can a switch belong to? - Answers-One.
How many VTP domains can be in a network? - Answers-Several
Can a switch in one VTP domain share information with a switch in another domain? -
Answers-No.
For a switch to participate in a VTP domain, it must be configured to operate in what
modes? - Answers-• Server
• Client
• Transparent
• Off
How many VTP servers need to be in a VTP domain? - Answers-At least one.
Where is VLAN and VTP information stored on a VTP server? - Answers-A file in flash
memory called "vlan.dat".
What does a VTP server use to keep track of changes to the domain? - Answers-
Revision numbers.
Can you create , change or delete VLANs on a VTP client? - Answers-No.
Does a VTP client forward VTP advertisements? - Answers-Yes.
What does the client switch do when it starts up? - Answers-It sends a request
advertisement to the VTP server for current VLAN information.
Do VTP clients recognize VTP advertisements from other switches? - Answers-Yes.
Do switches in transparent mode participate in VTP? - Answers-No
Can you create, or delete VLANs in transparent mode? - Answers-Yes.
, Does a switch in transparent mode advertise its own VLAN database or VLAN
configurations with other switches? - Answers-No.
In VTP version 1, what does a transparent switch do with received VTP
advertisements? - Answers-It will forward the advertisements to switches with matching
VTP domains and version numbers.
In VTP version 2, what does a transparent switch do with received VTP
advertisements? - Answers-It will forward VPT information regardless of VTP domain
and version.
Where do switches save VTP information in client mode? - Answers-Running-config
which is lost after a reboot.
Where do switches save VLAN information in transparent mode? - Answers-Vlan.dat file
in flash so it is readily available after reboot?
When a switch is in VTP "off" mode, what does it do with VTP advertisements? -
Answers-They are NOT forwarded through the switch. It does not participate with VTP
in any way.
In what version is VTP OFF mode available? - Answers-Version 3.
What VLANs do VTP versions 1, 2, and 3 support? - Answers-• Version 1 and 2 support
1-1005.
• Version 3 supports up to 4094.
VTP advertisements are sent to where? - Answers-Out the trunk ports to MAC address
0100.0CCC.CCCC
Where does a switch store VTP revision numbers? - Answers-NVRAM
What happens to the revision number on a VTP switch when the VTP domain name is
changed? - Answers-It is reset to zero.
What happens if a client or server switch is introduced into a network with a higher VTP
revision number than all of the other switches? - Answers-All of the switches in the VTP
domain will accept advertisements from the newly introduced switch and update their
good database entries with information that might be old, obsolete and incorrect.
What is recommended to be done to used switches before introducing them into a
production network? - Answers-• Change the switch's VTP mode to Transparent, and
then change the mode back to server (if it is to be used as a VTP server).
• Change the switch's VTP domain name to a fake unused name, and then change the
name back to the VTP domain name currently being used.
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