Network Basics: VLANs and Routers Quiz

<p>A Layer 3 routing process (D)</p> Signup and view all the answers

<p>They allow segmentation based on various organizational factors (A)</p> Signup and view all the answers

<p>It can have a limited number of LAN interfaces (A)</p> Signup and view all the answers

<p>Within switched local area networks (D)</p> Signup and view all the answers

<p>To route traffic between VLAN segments (B)</p> Signup and view all the answers

<p>VLANs enable specific access and security policies based on user groupings. (D)</p> Signup and view all the answers

<p>Native VLAN (B)</p> Signup and view all the answers

<p>It is limited to the specific VLAN only. (B)</p> Signup and view all the answers

<p>A VLAN trunk supports communication for devices in the same VLAN across different switches. (B)</p> Signup and view all the answers

<p>VLAN 1 (A)</p> Signup and view all the answers

<p>To access the management capabilities of network devices. (D)</p> Signup and view all the answers

<p>show vlan brief (C)</p> Signup and view all the answers

<p>Switches act to isolate the hosts within a VLAN from VLAN awareness. (C)</p> Signup and view all the answers

<p>To ensure devices can communicate within the same VLAN (D)</p> Signup and view all the answers

<p>Unintended security risks (B)</p> Signup and view all the answers

<p>Loss of network connectivity (B)</p> Signup and view all the answers

<p>Direct communication between devices on separate VLANs (A)</p> Signup and view all the answers

<p>Dynamic routing capability (B)</p> Signup and view all the answers

<p>Allowed VLANs on Trunks configuration issues (C)</p> Signup and view all the answers

<p>A router or multilayer switch (C)</p> Signup and view all the answers

<p>To segment a switched network into separate broadcast domains (B)</p> Signup and view all the answers

<p>switchport access vlan vlan_id (A)</p> Signup and view all the answers

<p>Reassign all member ports to a different VLAN (D)</p> Signup and view all the answers

<p>show vlan brief (B)</p> Signup and view all the answers

<p>It resets the switch to factory settings (A)</p> Signup and view all the answers

<p>show vlan brief (C)</p> Signup and view all the answers

<p>1 to 4094 (D)</p> Signup and view all the answers

<p>The 'delete flash:vlan.dat' command must be issued first (A)</p> Signup and view all the answers

<p>show interfaces switchport (A)</p> Signup and view all the answers

<p>To identify which VLAN the frame belongs to (A)</p> Signup and view all the answers

<p>It remains untagged and is placed in the native VLAN (C)</p> Signup and view all the answers

<p>1 to 4,096 (C)</p> Signup and view all the answers

<p>Set the port to access mode (B)</p> Signup and view all the answers

<p>VLAN 1 (B)</p> Signup and view all the answers

<p>They range from 1,006 to 4,096 (D)</p> Signup and view all the answers

<p>vlan vlan-id (B)</p> Signup and view all the answers

<p>To allow multiple VLAN frames to travel between switches (A)</p> Signup and view all the answers

<p>show vlan brief (B)</p> Signup and view all the answers

<p>Both ports are assigned to VLAN 1 by default. (B)</p> Signup and view all the answers

<p>VLAN 99 (C)</p> Signup and view all the answers

<p>show interface trunk (B)</p> Signup and view all the answers

<p>VLAN 99 (A)</p> Signup and view all the answers

<p>255.255.255.0 (C)</p> Signup and view all the answers

<p>Enable trunk mode (A)</p> Signup and view all the answers

<p>show interface switchport (C)</p> Signup and view all the answers

VLANs are used to divide a large network into smaller broadcast domains, improving performance and security.

VLANs are created on Layer 2 switches and allow you to group devices based on factors such as function, team, or application, regardless of their physical location.

VLANs segment a network, requiring a way for traffic to travel between these segments. This is achieved using a Layer 3 device, like a router or a Layer 3 switch.

A LAN interface allows devices on a network to connect to the network. An access layer switch typically provides this access, while routers focus on routing information between networks.

Routers normally have limited LAN interfaces and are primarily designed for routing information between networks, not providing access to individual devices.

VLANs are helpful in network design because they create logical network segments, making it easier to manage and control traffic flows within the network.

VLANs not only work within local networks but also have the ability to span across Metropolitan Area Networks (MANs) and Wide Area Networks (WANs).

A VLAN trunk is a link between network devices that carries traffic from multiple VLANs. This allows VLANs to communicate with each other across different network segments.

A logical partition of a Layer 2 network that allows for the grouping of devices into different broadcast domains, improving security and network management.

A VLAN that is automatically assigned to all switch ports when a switch is first configured.

A VLAN used for untagged traffic, meaning frames without VLAN information are assigned to this VLAN.

A VLAN used to access and manage a switch's configuration and features.

A type of VLAN that carries user-generated traffic, like data from computers and servers.

A VLAN specifically designed for voice traffic, such as IP phones. Usually uses VLAN 150.

VLANs help to control the spread of broadcast frames, meaning a broadcast frame sent by a device in a specific VLAN only travels within that VLAN, improving network performance and security.

The process of adding a VLAN identification header to a frame, which is used to transmit multiple VLAN frames through a trunk link.

A popular protocol that defines the structure of the VLAN tag added to a frame.

A special VLAN that is used for control traffic, and frames belonging to this VLAN are not tagged.

A type of network connection that allows multiple VLANs to share the same physical link.

A range of VLAN numbers between 1 and 1,005, stored in the flash memory of a Cisco Catalyst switch.

A range of VLAN numbers between 1,006 and 4,096, stored in the running configuration of a Cisco Catalyst switch.

A command used to enter the VLAN configuration mode on a Cisco switch.

A command used to assign a port to a specific VLAN on a Cisco switch.

A switch port operates in access mode when it is configured to carry traffic for a single VLAN. Devices connected to this port can only communicate with other devices in the same VLAN.

A switch port operates in trunk mode when it can carry traffic for multiple VLANs. Trunks allow communication between different VLANs, facilitating network segmentation.

The native VLAN is a special VLAN used in trunking. When a trunk link is first established, the native VLAN is used to carry initial traffic before VLAN tagging is established.

DTP (Dynamic Trunking Protocol) is a protocol used to negotiate trunk links between compatible switches. It automates the process of creating trunk links by exchanging messages between switches to determine if a trunk link is desired.

The VLAN ID 99 is a special VLAN used to carry initial traffic before other VLAN tags are negotiated. It is often used as the native VLAN for trunk mismatches.

In this scenario, PC1 and PC4 are on the same VLAN (VLAN 10), but they can't communicate because the ports connecting them are in Access Mode and assigned to VLAN 1 by default.

A VLAN trunk allows communication between different VLANs. By configuring ports on the switches in Trunk Mode and configuring the native VLAN, you can enable communication between devices in different VLANs, as long as the communication between the ports is in trunk mode.

The "switchport mode access" command configures a port to operate in access mode, enabling it to belong to a specific VLAN.

The "switchport access vlan vlan_id" command assigns a specific VLAN to a port operating in access mode.

The "no vlan vlan-id" command removes a VLAN from the switch's configuration, deleting it from the VLAN database. However, all ports associated with that VLAN must be moved to a different VLAN first.

The "delete flash:vlan.dat" command completely removes all VLAN configurations from the switch, returning it to its factory default state. This command should be used with caution, as it will erase all VLAN settings.

The "show vlan brief" command provides a concise summary of each VLAN, including its name, status, and associated ports.

The "show interfaces" command displays detailed information about network interfaces. The option "vlan vlan-id" allows you to view information about a specific VLAN.

The "show switchport" command provides information about the administrative and operational status of a switching port, including port blocking and port protection settings.

The "show vlan id vlan-id" command displays information about a specific VLAN, including its name, status, and associated ports.

A configuration where the native VLAN on one switch port doesn't match the native VLAN on another switch port. This leads to security risks and unexpected results.

When switch ports are in different trunk modes, communication fails. The most common scenario is both ports being set to 'dynamic auto' instead of a compatible mode.

The list of VLANs allowed on a trunk doesn't match the actual VLANs being used. This results in traffic issues.

A switch port configured to handle traffic from multiple VLANs, allowing connections to different network segments.

A configuration issue where the native VLAN on one switch port doesn't match the native VLAN on another switch port. This can lead to security vulnerabilities and unexpected network behavior.