2A

Question 1

What does VLAN stand for?

Answer 1

Virtual Local Area Network

Question 2

A ____ is defined as a “logical” grouping of network devices into a single broadcast domain or flat network.

Answer 2

VLAN

Question 3

____ networks have a single broadcast domain, meaning that every connected device sees every broadcast packet that is transmitted.

Answer 3

Flat

Question 4

Switches provide _____ Layer 3 services (Broadcast control) using VLANs to segment or create smaller broadcasts domains.

Answer 4

limited

Question 5

A common example of a type of broadcast you might see on your network is a computer merely…?

Answer 5

sending out a hello packet

In small networks, this is not a problem. When you have thousands of
computers sending out a broadcast hello packet that all the connected computers see; however, we start to have bandwidth issues.

Question 6

VLAN’s limit broadcasts by keeping the broadcast from one VLAN
from going to another VLAN. This segmentation means that communication between VLANs must go through a…?

Answer 6

Layer 3 routing process

Question 7

What are the three VLAN benefits?

Answer 7

1. Increased Security (Who has Access)
2. Flexibility and Scalability
3. No Geographical Barrier

Question 8

What VLAN benefit is the following describing?

Every broadcast frame transmitted on a segment is seen by all devices on the segment, regardless of whether the device needs the data. Security is increased because only those devices part of the same
VLAN will receive the frame. The administrator controls each port and whatever resources it is allowed to use. VLANs keep local traffic local to a particular broadcast domain, which ensures that traffic from one VLAN is not accessible from another.

Answer 8

Increased Security (Who has Access)

Question 9

What VLAN benefit is the following describing?

VLANs add flexibility to your network by limiting or adding only the device you want in the broadcast domain regardless of its physical location.

Answer 9

Flexibility and Scalability

Question 10

What VLAN benefit is the following describing?

By using VLANs, you are no longer confined to creating workgroups based on physical locations. A VLAN can span multiple “physical” LAN segments but have the same Broadcast Domain (Logical).

Answer 10

No Geographical Barrier

Question 11

VLANs can exist on a single switch or span multiple switches such as what two switches?

Answer 11

ASWs (Access Switches) and DSWs (Distribution Switches)

Question 12

Cisco switches come with default ____ _ already created. After your additional VLANs are created, you will assign selected switch ports to each VLAN.

Answer 12

VLAN 1

Question 13

We identify VLANs using a _______, notice VLAN 1, VLAN 10, VLAN 20, and so on. When you create a VLAN or use a VLAN, you will reference this _______ in all systems.

Answer 13

number

Question 14

If you create VLAN 30 on one switch and create VLAN 30 on a connected switch, they will both treat all VLAN 30 traffic as a
_____ _____ _____.

Answer 14

single local network

Question 15

VLANs should also be given a descriptive _____. “Sales” is a better name than the default name “VLAN0010”. Using JUNOS, a VLAN is created with a ____, and then assigned a number. The concept of a VLAN remains the same.

Answer 15

name

Question 16

Initially, all switch ports are assigned to default VLAN 1 until…?

Answer 16

changed by the administrator

Question 17

A ____ _________ indicates which VLAN or VLANs are assigned to a certain physical port for traffic forwarding and filtering.

Answer 17

VLAN membership

Question 18

A port can only be a member of ____ VLAN.

Answer 18

one

Question 19

On Cisco switches, this is done with the “____ ____” command while in privileged EXEC mode.

Answer 19

show vlan

Question 20

What is VLAN trunking?

Answer 20

A trunk is a connection between network devices that can carry more than one VLAN.

Question 21

Trunks are also referred to as?

Answer 21

Tagged ports

Question 22

Access ports are also referred to as?

Answer 22

Untagged ports

Question 23

What are two common trunking methods?

Answer 23

1. Inter-Switch Link (ISL) – Cisco proprietary standard for trunks (deprecated)
2. IEEE 802.1q – defined open standard for trunks

Question 24

_________ is a way of encapsulating a VLAN frame that utilizes a space in the standard frame header.

Answer 24

IEEE 802.1q

Question 25

____ also tags the frame but instead of using the frame as it is, ___ adds a new header and trailer to the existing frame.

Answer 25

ISL (Inter-Switch Link)

Question 26

What does ISL stand for?

Answer 26

Inter-Switch Link

Question 27

ISL only works with ______devices, where IEEE 802.1q works with _____
major manufacture’s models.

Answer 27

cisco
all

Question 28

________ _____ is used for purposes such as telnet (logging on to a computer), Simple Network Management Protocol (SNMP) (manage and monitor network devices), and syslog (network devices sending messages to a logging server).

Answer 28

Management VLAN

Question 29

VLAN 1 may unwisely span the entire network if not appropriately pruned. If its scope is large enough, the risk of compromise can increase significantly. You should not make…?

Answer 29

VLAN 1 the management VLAN