Virtual Local Area Network Trivia Quiz

1. Which feature can be used to carry all VLAN traffic on one link from a switch to a router

Trunking

Pruning

LACP

None of the above

Trunking is a feature that allows for the transmission of multiple VLANs over a single link between a switch and a router. By using trunking, the switch can tag each VLAN traffic with a specific identifier, allowing the router to differentiate and process the traffic accordingly. This helps to optimize network efficiency and reduce the number of physical connections needed between the switch and the router.

Explanation

Trunking is a feature that allows for the transmission of multiple VLANs over a single link between a switch and a router. By using trunking, the switch can tag each VLAN traffic with a specific identifier, allowing the router to differentiate and process the traffic accordingly. This helps to optimize network efficiency and reduce the number of physical connections needed between the switch and the router.

2. An IP address is required for TCP communication between two computers residing on the same VLAN.

True

False

In TCP communication, an IP address is required for two computers to establish a connection and exchange data. The IP address is used to uniquely identify each computer on the network, allowing them to locate and communicate with each other. In the given scenario, since the two computers are residing on the same VLAN (Virtual Local Area Network), they still require an IP address to establish TCP communication. Therefore, the statement is true.

Explanation

In TCP communication, an IP address is required for two computers to establish a connection and exchange data. The IP address is used to uniquely identify each computer on the network, allowing them to locate and communicate with each other. In the given scenario, since the two computers are residing on the same VLAN (Virtual Local Area Network), they still require an IP address to establish TCP communication. Therefore, the statement is true.

3. Which of the following would be unavailable in a 802.1q tagged frame

Source mac-address

Destination mac-address

802.1q tag

None of the above

In a 802.1q tagged frame, all of the mentioned elements would be available. The source mac-address and destination mac-address are essential components of a frame, and the 802.1q tag is used to identify the VLAN to which the frame belongs. Therefore, none of the above options would be unavailable in a 802.1q tagged frame.

Explanation

In a 802.1q tagged frame, all of the mentioned elements would be available. The source mac-address and destination mac-address are essential components of a frame, and the 802.1q tag is used to identify the VLAN to which the frame belongs. Therefore, none of the above options would be unavailable in a 802.1q tagged frame.

4. 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

192.168.1.1

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

Management IP address of vlan 1

The default gateway on PC1 should be set to 192.168.1.1 in order to access PC2. This is because PC1 and PC2 are on different VLANs, and the router is connected to the switch with trunking enabled. The router has separate IP addresses configured for each VLAN, with 192.168.1.1 for VLAN 1 and 192.168.2.1 for VLAN 2. Setting the default gateway on PC1 to 192.168.1.1 will allow it to reach the router and access PC2 on VLAN 2.

Explanation

The default gateway on PC1 should be set to 192.168.1.1 in order to access PC2. This is because PC1 and PC2 are on different VLANs, and the router is connected to the switch with trunking enabled. The router has separate IP addresses configured for each VLAN, with 192.168.1.1 for VLAN 1 and 192.168.2.1 for VLAN 2. Setting the default gateway on PC1 to 192.168.1.1 will allow it to reach the router and access PC2 on VLAN 2.

5. Which of the following features can be used to restrict communication between VLAN's

Access list

Mac-based authentication

Web-based authentication

Port-security

Access lists can be used to restrict communication between VLANs. Access lists are a set of rules or filters that can be applied to a router or switch interface. They allow or deny traffic based on various criteria such as source or destination IP address, protocol, or port number. By configuring access lists, network administrators can control which VLANs can communicate with each other and restrict unwanted traffic between them.

Explanation

Access lists can be used to restrict communication between VLANs. Access lists are a set of rules or filters that can be applied to a router or switch interface. They allow or deny traffic based on various criteria such as source or destination IP address, protocol, or port number. By configuring access lists, network administrators can control which VLANs can communicate with each other and restrict unwanted traffic between them.

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

Router

Layer 3 switch

Default gateway

No additional device is required

No additional device is required because VLANs are virtual LANs that can be created within a switch. PCs within the same VLAN can communicate with each other without the need for any additional device. VLANs separate the network into smaller broadcast domains, allowing for better network performance and security.

Explanation

No additional device is required because VLANs are virtual LANs that can be created within a switch. PCs within the same VLAN can communicate with each other without the need for any additional device. VLANs separate the network into smaller broadcast domains, allowing for better network performance and security.

7. How many untagged VLAN's can a switch port be a member of

1

Unlimited

4096

Dependent on the capacity of the switch

A switch port can only be a member of one untagged VLAN at a time. This means that the port will forward traffic for that VLAN without any VLAN tagging. If the port needs to be a member of multiple VLANs, it can be configured as a tagged port, where VLAN tagging is used to differentiate between the different VLANs. However, for untagged VLANs, the switch port can only be a member of one VLAN.

Explanation

A switch port can only be a member of one untagged VLAN at a time. This means that the port will forward traffic for that VLAN without any VLAN tagging. If the port needs to be a member of multiple VLANs, it can be configured as a tagged port, where VLAN tagging is used to differentiate between the different VLANs. However, for untagged VLANs, the switch port can only be a member of one VLAN.

8. On a switch , port 1 and port 2 are configured as members of vlan 2 and vlan 3 respectively. Which of the following is true

Broadcast traffic initiated on port 1 will not be available on port 2

Unicast traffic initiated on port 1 will be available on port 2

Broadcast traffic initiated on port 1 will be available on port 2 if a router is configured.

All of the above

When port 1 and port 2 are configured as members of different VLANs (VLAN 2 and VLAN 3 respectively), they are isolated from each other. Broadcast traffic initiated on port 1 will only be available to other members of VLAN 2 and will not be forwarded to port 2. Therefore, the statement "Broadcast traffic initiated on port 1 will not be available on port 2" is true.

Explanation

When port 1 and port 2 are configured as members of different VLANs (VLAN 2 and VLAN 3 respectively), they are isolated from each other. Broadcast traffic initiated on port 1 will only be available to other members of VLAN 2 and will not be forwarded to port 2. Therefore, the statement "Broadcast traffic initiated on port 1 will not be available on port 2" is true.

9. How many VLAN's can be configured on a switch

4096

2048

Number of ports on the switch = Number of VLAN's

Based on the switch design

The number of VLAN's that can be configured on a switch is based on the switch design. Different switches have different limitations and capabilities when it comes to VLAN configuration. Some switches may support a maximum of 4096 VLAN's, while others may support fewer. Therefore, the number of VLAN's that can be configured on a switch depends on how the switch is designed and its specific capabilities.

Explanation

The number of VLAN's that can be configured on a switch is based on the switch design. Different switches have different limitations and capabilities when it comes to VLAN configuration. Some switches may support a maximum of 4096 VLAN's, while others may support fewer. Therefore, the number of VLAN's that can be configured on a switch depends on how the switch is designed and its specific capabilities.

10. Which of the following are true

VLAN's needs to be configured with IP addresses

VLANs need not have an IP address

VLAN's does not allow broadcast traffic from one VLAN to another

VLAN's can be configure on Hubs

VLANs need not have an IP address because VLANs are primarily used for segmenting a network into smaller, isolated virtual networks. They operate at the data link layer (Layer 2) of the OSI model and do not require IP addresses to function.

VLANs do not allow broadcast traffic from one VLAN to another because they create separate broadcast domains. Broadcast traffic is contained within each VLAN, preventing it from crossing over to other VLANs. This helps to improve network performance and security by reducing unnecessary broadcast traffic.

Explanation

VLANs need not have an IP address because VLANs are primarily used for segmenting a network into smaller, isolated virtual networks. They operate at the data link layer (Layer 2) of the OSI model and do not require IP addresses to function.

VLANs do not allow broadcast traffic from one VLAN to another because they create separate broadcast domains. Broadcast traffic is contained within each VLAN, preventing it from crossing over to other VLANs. This helps to improve network performance and security by reducing unnecessary broadcast traffic.

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