Chapter 1 - Key Terms

Question 1

The IEEE standardized protocol for VLAN trunking

Answer 1

802.1Q

Question 2

In campus LANs, an Ethernet segment over which the devices add a VLAN header that identifies the VLAN in which the frame exists.

Answer 2

Trunk

Question 3

The configured trunking setting on a Cisco switch interface, as configured with the “switchport mode” command

Answer 3

Trunking Administrative Mode

Question 4

The current behavior of a Cisco switch interface for VLAN trunking

Answer 4

Trunking Operational Mode

Question 5

A group of devices connected to one or more switches that are grouped into a single broadcast domain through configuration. VLANs allow switch administrators to place the devices connected to the switches in separate VLANs without requiring separate physical switches. This creates design advantages of separating the traffic without the expense of buying additional hardware.

Answer 5

Virtual LAN (VLAN)

Question 6

A Cisco-proprietary messaging protocol used between Cisco switches to communicate configuration information about the existence of VLANs, including the VLAN ID and VLAN name.

Answer 6

VLAN Trunking Protocol (VTP)

Question 7

One of three operating characteristics (modes) in VTP. Switches in transparent mode can configure VLANs, but they do not tell other switches about the changes, and they do not learn about VLAN changes from other switches; however, they can pass VTP messages between other switches that use VTP server and client modes.

Answer 7

VTP Transparent Mode

Question 8

A LAN switch that can also perform Layer 3 routing functions. The name comes from the fact that this device makes forwarding decisions based on logic from multiple OSI layers (Layer 2 and 3).

Answer 8

Layer 3 Switch

Question 9

A LAN network design term that refers to a switch interface connected to end-user devices, configured so that it does not use VLAN trunking

Answer 9

Access interface

Question 10

A switch interface configured so that it operates using VLAN trunking (either 802.1Q or ISL)

Answer 10

Trunk interface

Question 11

A VLAN used by typical data devices connected to an Ethernet, such as PCs and servers. Used in comparison to a Voice VLAN.

Answer 11

Data VLAN

Question 12

A VLAN defined for use by IP Phones, with the Cisco switch notifying the phone about the Voice VLAN ID so that the phone can use 802.1Q frames to support traffic for the phone and the attached PC (which uses a data VLAN)

Answer 12

Voice VLAN