LAN Switching And Wireless - Chapter 3 Exam

The command "no vlan 1" generated an error because VLAN 1 can never be deleted. VLAN 1 is the default VLAN and it is always present on a switch. It is used for administrative purposes and cannot be removed or deleted.

The correct answer is on, auto, or dynamic desirable mode. In dynamic desirable mode, a switch port actively tries to form a trunking link with the neighboring switch port. The neighboring switch port can be in any of the three modes - on, auto, or dynamic desirable - for the trunking link to be successfully formed. These modes allow the switches to negotiate and determine whether to form a trunk or not.

A VLAN ID tag will be included with the frame on links C and E along the path between computer 1 and computer 4.

The network administrator should reconfigure switch port Fa0/1 by entering the switchport mode access command in interface configuration mode. This command will change the port from trunk mode to access mode, allowing it to connect a host to the network.

The switchport mode dynamic desirable command allows the connected devices to dynamically determine when data for multiple VLANs needs to be transmitted across the link and brings the trunk up as needed. A trunk link is formed if the remote connected device is configured with the switchport mode dynamic auto or switchport mode trunk commands.

The most likely cause of the problem is that VLAN 50 is not allowed to enter the trunk between Switch1 and Switch2. This means that the VLAN is not being properly transmitted between the two switches, causing the communication issue between Computer A, Computer C, and Computer D. To resolve this problem, VLAN 50 needs to be allowed on the trunk between the switches.

When a VLAN is deleted, the member ports of that VLAN lose their ability to communicate with other ports. This means that any traffic or data that was previously being transmitted between those ports will no longer be able to reach its intended destination. The deletion of the VLAN effectively isolates the member ports and prevents them from exchanging information with other ports on the network.

The most likely cause of the problem is that Computer D does not have a proper address for the VLAN 3 address space. This means that Computer D is not configured with the correct IP address or subnet mask for the VLAN 3 network. As a result, it is unable to communicate with other devices on that VLAN.

The correct answer is computer D, computer G. This means that a broadcast frame sent by computer A will only be propagated to computer D and computer G in the LAN domain. The other computers (B, C, E, F, H, I) will not receive the broadcast frame.

The most likely cause of the problem is that the trunk cannot be negotiated with both ends set to auto. This means that the switches are not able to automatically determine and agree on the trunking protocol to be used. Cisco switches only support the ISL trunking protocol, so if both ends are set to auto, they will not be able to establish a trunk. To resolve this issue, the trunking protocol should be manually configured on both switches to ensure compatibility.

Hosts on different VLANs communicate through routers. This is because VLANs are logical networks that are separated from each other, and in order for hosts on different VLANs to communicate, they need to go through a router. The router acts as a bridge between the VLANs, allowing traffic to be routed between them. VTP is a protocol used for VLAN management, but it is not used for communication between hosts on different VLANs. The statement about hosts on different VLANs needing to be in the same IP network is incorrect, as VLANs can have different IP networks assigned to them. The statement about examining the VLAN ID in frame tagging is true, but it is not the method by which hosts on different VLANs communicate with each other.

The likely cause for the users on PC1 being unable to access shares on PC4 is that PC4 must use the same subnet as PC1. Since they are on different subnets, they are unable to communicate with each other.

VLANs improve network security by isolating users that have access to sensitive data and applications. By segmenting the network into different VLANs, users in one VLAN cannot directly communicate with users in another VLAN, providing an additional layer of security.

VLANs divide a network into smaller logical networks, resulting in lower susceptibility to broadcast storms. Broadcast storms occur when a network becomes overwhelmed with broadcast traffic, causing network performance issues. By dividing the network into VLANs, broadcast traffic is contained within each VLAN, reducing the impact of broadcast storms and improving overall network performance.

DTP (Dynamic Trunking Protocol) is a Cisco proprietary protocol used to negotiate trunk links between switches. If Interface Fa0/2 on switch SW2 supports DTP, it will negotiate with Interface Fa0/1 on switch SW1, which has been configured with trunk mode "on", to form a trunk link.

Configuring interswitch connections as trunks means that multiple VLANs can be carried over the same connection. In the case of a broadcast storm occurring on one VLAN, it can affect the entire trunk connection, causing performance issues and potentially affecting all VLANs carried by that trunk. Therefore, this is a valid consideration when planning VLAN traffic across multiple switches.

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To remove Fast Ethernet port fa0/1 from VLAN 2 and assign it to VLAN 3, the network administrator should enter the "switchport access vlan 3" command in interface configuration mode. This command specifically assigns the interface to VLAN 3, removing it from VLAN 2.

The VLANs may be named: This means that the network administrator has the option to assign a name to each VLAN, such as "VLAN20" and "VLAN30", to easily identify and distinguish them.

The network administrator may create the VLANs in either global configuration mode or VLAN database mode: This means that the network administrator has flexibility in choosing the mode to create the VLANs. They can either create them in the global configuration mode or in the VLAN database mode, depending on their preference and the specific requirements of the network.

Trunking can occur with non-Cisco switches. This is because trunking is a feature that allows multiple VLANs to be carried over a single physical link between switches. It is not limited to Cisco switches and can be supported by switches from other vendors as well. Therefore, it is true that trunking can occur with non-Cisco switches.

Based on the given output, we can conclude that the command "switchport access vlan 20" was entered in interface configuration mode for Fast Ethernet interface 0/1. This means that the devices connected to this interface will be assigned to VLAN 20. Additionally, devices attached to ports fa0/5 through fa0/8 cannot communicate with devices attached to ports fa0/9 through fa0/12 without the use of a Layer 3 device. This suggests that these ports are in different VLANs or subnets, requiring a Layer 3 device for communication between them.

In a default switch configuration, VLAN1 is the management VLAN, which means it is used for managing and configuring the switch. Additionally, all switch ports are members of VLAN1, which means that by default, all ports are part of this VLAN and can communicate with each other.