VLANs Quiz

What is the purpose of VLANs in a switched network?

• To improve security by isolating user access to sensitive data and applications

• To reduce network costs by efficiently using existing bandwidth and uplinks

• To divide a network into smaller logical networks and reduce unnecessary traffic

• All of the above

How does a switch forward frames based on VLAN configuration in a multi-switched environment?

• By using Layer 3 routing to forward frames between VLANs

• By using Layer 2 switching to forward frames within a VLAN

• By using Layer 4 load balancing to distribute frames across VLANs

• By using Layer 7 application inspection to filter frames based on VLAN

How can a switch port be assigned to a VLAN?

• By configuring the port as an access port

• By configuring the port as a trunk port

• By using Dynamic Trunk Protocol (DTP)

• By configuring the port as a management port

What is the purpose of a trunk port on a LAN switch?

• To connect switches to other switches or routers

• To carry all VLAN traffic between switches

• To support multiple VLANs on a single link

• All of the above

What are the benefits of VLANs?

• Improved security, cost reduction, smaller broadcast domains, better performance, and improved IT staff efficiency

• Improved security, cost reduction, larger broadcast domains, better performance, and improved IT staff efficiency

• Decreased security, increased network costs, larger broadcast domains, decreased performance, and decreased IT staff efficiency

• Decreased security, increased network costs, smaller broadcast domains, decreased performance, and decreased IT staff efficiency

What is the purpose of tagging frames with VLAN information?

• To accommodate VLAN information in the standard Ethernet frame

• To enable Token Ring frames to be carried across Ethernet links

• To expedite transmission of Layer 2 frames

• To identify the destination VLAN

Which field in the VLAN tag specifies the VLAN identification number?

• Tag protocol ID (TPID)

• Priority

• Canonical Format Identifier (CFI)

• VLAN ID (VID)

What does the receiving switch do when it receives a tagged frame on a trunk port?

• Inserts a VLAN tag between the Source MAC field and the Type/Length field

• Recalculates the FCS for the new 802.1Q frame

• Reads the VLAN ID in the VLAN tag field to identify the destination VLAN

• Sends the frame out of the ports as identified by VLAN ID

What is the purpose of the Native VLAN?

• To forward untagged frames to the native VLAN of the port

• To drop tagged frames on the native VLAN

• To use a different VLAN number for security purposes

• To assign a default Port VLAN ID (PVID)

How do you configure a trunk link between two switches?

• Set the port to access mode

• Specify a native VLAN for untagged 802.1Q trunks

• Specify the list of VLANs to be allowed on the trunk link

• Use the switchport mode trunk command on the interconnecting ports