BULBv.2.0 - VLAN

What is the difference between an access port and a trunk port?

• A trunk port belongs to a single VLAN; an access port provides access for multiple VLANs between switches.

• An access port can have a native VLAN, but a trunk port cannot.

• An access port can have only one device attached.

• Multiple VLANs traverse a trunk port, but an access port can belong to a single VLAN.

Which of these are the primary benefits of using VLAN?

• Security

• A reduction in the number of trunk links

• Cost Reduction

• End user satisfaction

• Improved IT Staff efficiency

Answer explanation

Internally, separating users improves security and privacy by ensuring that users can only access the networks that apply to their responsibilities. External threats are also minimized. If an outside attacker is able to gain access to one VLAN, they’ll be contained to that network by the boundaries and controls you have in place to segment it from your others.

What mechanism is used to achieve the separation between different VLANs as they cross a trunk link?

• VLAN tagging using 802.1Q protocol

• VLAN tagging using 802.1p protocol

• VLAN multiplexing

• VLAN set as a native VLAN

Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port?

• VLAN 20

• 802.1Q

• VLAN 10

• Native VLAN

Assuming the default switch configuration, which normal VLAN range can be added, modified, and removed on a Cisco switch?

• 2 - 1005

• 1 - 1005

• 1 - 1001

• 2 - 1001

• 1 - 1002

Answer explanation

Normal VLAN range

1-1005

1 is the default VLAN

1002-1005 are reserved

1002 fddi-default

1003 token-ring-default

1004 fddinet-default

1005 trnet-default

What additional device is required for communication between two PC's on same VLAN?

• Router

• Default Gateway

• Layer 3 switch

• No additional switch is required

• Router on a stick

A port with DTP set to dynamic auto connected to one set to dynamic desirable will result in?

• an access link

• trunk link

• limited connectivity

• no connectivity

Which VTP mode should a Cisco switch be set to if this switch is to add or delete VLANs to a management domain?

• Transparent

• Auto

• Server

• Client

Which VLAN can NOT be filtered through the VTP Pruning feature of Cisco switches?

• VLAN 1

• VLAN 10

• VLAN 1005

• VLAN 20

PC1 and PC2 are connected to port 1 and port 2 of a switch. Port 1 and Port 2 are members of VLAN 1 and VLAN 2 respectively. A router is also configured, with VLAN 1 IP address as 192.168.1.1/24 and VLAN 2 IP address as 192.168.2.1/24 and connected to the switch with trunking enabled. What should be the default gateway on PC1 for it to access PC2?

• 192.168.2.1

• A default gateway need not be explicitly configured since a router is available

• 192.168.1.1

• Management IP address of vlan 1

• 192.168.1.0