Which of the following are benefits of VLANs?
1.They increase the size of collision domains.
2.They allow logical grouping of users by function.
3.They can enhance network security.
4.They increase the size of broadcast domains while decreasing the number of collision domains.
5.They simplify switch administration.
6.They increase the number of broadcast domains while decreasing the size of the broadcast domains.
A) 1 and 5
B) 2 and 4
C) 1, 3 and 5
D) 2, 3 and 6
Correct Option - D
ExplanationVLANs break up broadcast domains in a switched layer 2 network, which means smaller broadcast domains. They allow configuration by logical function instead of physical location and can create some security if configured correctly.
To configure the VLAN trunking protocol to communicate VLAN information between two switches, what two requirements must be met?
1.Each end of the trunk link must be set to the IEEE 802.1e encapsulation.
2.The VTP management domain name of both switches must be set the same.
3.All ports on both the switches must be set as access ports.
4.One of the two switches must be configured as a VTP server.
5.A rollover cable is required to connect the two switches together.
6.A router must be used to forward VTP traffic between VLANs.
A) 1, 2 and 4
B) 3, 5 and 6
C) 2 and 4
D) 1 and 6
Correct Option - C
ExplanationYou must have the same VTP domain name on all switches in order to share VLAN information between the switches. At least one of the switches must be a VTP server; the other switches should be set to VTP client.
A) ISL
B) 802.1Q
C) VLANs
D) STP
Correct Option - C
ExplanationVirtual LANs break up broadcast domains in layer 2 switched internetworks.
A) trunk on
B) trunk all
C) switchport trunk on
D) switchport mode trunk
Correct Option - D
ExplanationTo set a switch port to trunk mode, which allows all VLAN information to pass down the link, use the switchport mode trunk command.
A) ISL
B) 802.3Z
C) 802.1Q
D) 802.3U
Correct Option - C
Explanation802.1Q was created to allow trunked links between disparate switches.
A) You must have at least two VLANs defined in every Cisco switched network.
B) All VLANs are configured at the fastest switch and, by default, propagate this information to all other switches.
C) You should not have more than 10 switches in the same VTP domain.
D) VTP is used to send VLAN information to switches in a configured VTP domain.
Correct Option - D
ExplanationSwitches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunk Protocol (VTP) is used to propagate VLAN information across a trunked link.
A) Managed hubs
B) Bridges
C) Switches
D) Switches configured with VLANs
Correct Option - D
ExplanationBy creating and implementing VLANs in your switched network, you can break up broadcast domains at layer 2. For hosts on different VLANs to communicate, you must have a router or layer 3 switch.