NetPro6.4
You have two VLANs configured on a single switch. How many broadcast domains are there? How many collision domains are there?
2 4
You need to keep users in all other departments from accessing the servers used by the finance department. Which of the following technologies should you use to logically isolate the network?
A virtual LAN (VLAN) uses switch ports to define a broadcast domain. When you define a VLAN, you assign devices on different switch ports to a separate logical, or virtual, LAN.
Which of the following statements describe how VLANs affect broadcast traffic within an internetwork? (Select two.)
Broadcast traffic is transmitted only within a VLAN. Devices on the same VLAN have the same subnet address.
Which of the following are reasons to configure VLANs on a switch as opposed to using switches without VLANs? (Select two.)
Create VLANs to increase the number of broadcast domains and implement security. Each VLAN is in its own broadcast domain. Broadcast traffic within the VLAN goes only to the members of the VLAN. Members of one VLAN can only communicate with members in the same VLAN through the switch. A router or a Layer 3 switch is required to enable inter-VLAN communication.
Which of the following best describes the concept of a VLAN?
Devices on the same network logically grouped as if they were on separate networks.
You manage a network with two switches. The switches are connected together through their Gigabit Ethernet uplink ports. You define VLAN 1 and VLAN 2 on each switch. A device on the first switch in VLAN 1 needs to communicate with a device on the same switch which is in VLAN 2. What should you configure so that the two devices can communicate?
Routing In a typical configuration with multiple VLANs and a single or multiple switches, workstations in one VLAN will not be able to communicate with workstations in other VLANs. To enable inter-VLAN communication, you will need to use a router (or a Layer 3 switch).
What are two advantages of creating VLANs on your network?
Simplify device moves (devices are moved to new VLANs by modifying the port assignment). Control security (isolate traffic within a VLAN).
Which of the following connectivity hardware is used to create a VLAN?
Switch
You can create a virtual LAN using which of the following?
Switch
You want to reduce collisions by creating separate collision domains and virtual LANs. Which of the following devices should you choose?
Switch
When you configure VLANs on a switch, which of the following is used to identify a device's VLAN membership?
Switch port
VLAN ID
Switches use VLAN identifications (IDs) to route VLAN traffic. VLAN IDs are appended to the header of each frame.In addition, VLAN IDs allow switches to identify which VLAN the frame belongs to and are used for inter-switch traffic.
Which of the following are true regarding using multiple VLANs on a single switch? (Select two.)
The number of collision domains remains the same. The number of broadcast domains increases.
You run a small network for your business that has a single router connected to the internet and a single switch. You keep sensitive documents on a computer that you would like to keep isolated from other computers on the network. Other hosts on the network should not be able to communicate with this computer through the switch, but you still need to access the network through the computer. Which of the following should you use in this situation?
VLAN
Your company is a small start-up that has leased office space in a building shared by other businesses. All businesses share a common network infrastructure. A single switch connects all devices in the building to the router that provides internet access. You would like to make sure that your computers are isolated from computers used by other companies. Which feature should you request to have implemented?
VLAN
You manage a network that uses a single switch. All ports within your building connect through the single switch. In the lobby of your building are three RJ45 ports connected to the switch. You want to allow visitors to plug into these ports to gain internet access, but they should not have access to any other devices on your private network. Employees connected throughout the rest of your building should have both private and internet access. Which feature should you implement?
VLANs
VLAN
Virtual Local Area Network
The following commands create VLAN 12, name it IS_VLAN, identify port 0/12 as having only workstations attached to it, and assign the port to VLAN 12.
switch#config tswitch(config)#vlan 12 switch(config-vlan)#name IS_VLAN switch(config-vlan)#interface fast 0/12 switch(config-if)# switchport access vlan 12
Shows a list of VLANs on the system.
switch#show vlan switch#show vlan brief
Shows information for a specific VLAN.
switch#show vlan id [1-4064]
Deletes a VLAN.
switch(config)#no vlan [1-4094]
Defines a VLAN. Gives the VLAN a name.
switch(config)#vlan [1-4094] switch(config-vlan)#name [unique_name]
