csc2

Question 1

Command:
banner motd (end character)

Answer 1

Create a message that shows after logging in to the CLI

Question 2

command:
banner login (end character)

Answer 2

Create a message that shows when attempting to access the CLI

Question 3

VLAN

Answer 3

Virtual Local Area Network
Allows you to group users and end devices in a logical way. A VLAN is a broadcast domain.

Question 4

Command:
vlan (number)

Answer 4

Enter layer 2 VLAN configuration mode.

Question 5

Command:
show vlan

Answer 5

Shows VLAN settings on a device and which interfaces belong to which vlan

Question 6

Command:
(config-if)
switchport access vlan (number)

Answer 6

Assign a VLAN to a specific interface port

Question 7

Command:
(config-vlan)
name

Answer 7

Assign a name to the VLAN.

Question 8

dot1q

Answer 8

802.1q, VLAN tagging standard.
A switch appends a VLAN tag to a frame and recalculates the FCS value.

Question 9

Trunk/Tagged port

Answer 9

A port on a switch that has multiple VLANs broadcasting through it.

Question 10

DTP

Answer 10

Dynamic Trunking Protocol
A settings on Cisco Switches that allows a switch to negotiate a trunk port with another switch.

Question 11

DTP
Dynamic Desirable

Answer 11

Proactively negotiates to creates trunks

Question 12

DTP
Dynamic Auto

Answer 12

Passively waits to create a trunk until receiving a negotiate request from a connected interface that has Dynamic Desirable set.

Question 13

DTP
Trunk

Answer 13

Forces an interface to become a trunk.

Question 14

DTP
Nonegotiate

Answer 14

Disables DTP

Question 15

Command:
show interfaces trunk

Answer 15

See what trunks are formed on the device.

Question 16

command:
show interface (interface) switchport

Answer 16

Show the output of a switchport, including DTP settings.

Question 17

Command:
(config-if)
switchport trunk allowed vlan (name)

Answer 17

Override what VLANs are allowed on a trunk. Very Dangerous.

Question 18

Command:
(config-if)
switchport trunk allowed vlan add (name)

Answer 18

Add VLANs to the existing allowed list on a trunk.

Question 19

vlan.dat

Answer 19

VLAN information stored in flash separate from running-config

Question 20

Command:
write erase

Answer 20

Erases the memory of a device, starts from scratch (CAT Reset)

Question 21

Command:
delete flash: (item)

Answer 21

Deletes a selected file from flash

Question 22

ISL

Answer 22

Cisco Inter Switch Link - Outdated Cisco proprietary DTP counterpart. Not used except by some switches that have it on by default.

Question 23

Command:
(config-if)
switchport trunk encapsulation dot1q

Answer 23

Forces the port to use dot1q for its trunking. Used to disable ISL.

Question 24

Native VLAN

Answer 24

If a switch receives a frame with no VLAN information, it assumes it belongs to the Native VLAN.
Switches do not tag frames the belong to the native VLAN.

Question 25

command: (config-if) switchport trunk native vlan (number)

Answer 25

Change the native VLAN on a specific trunk interface.

Question 26

Command: show spanning-tree

Answer 26

Shows the spanning tree protocol settings and information.

Question 27

STP

Answer 27

Spanning Tree Protocol - Cisco Proprietary protocol. Designed to prevent loops in a network. Enabled on all Cisco switches by default. Uses BPDUs to exchange information between switches.

Question 28

BPDU

Answer 28

Bridge Protocol Data Units Spanning Tree Protocol messages sent between switches.

Question 29

STP Root Bridge

Answer 29

The most important switch in a network using STP. All other switches will find the fastest way to get to the root bridge.

Question 30

STP Root Bridge Election

Answer 30

A switch the the lowest priority wins, the default value is 32768 If there is a tie, the lowest MAC address wins.

Question 31

STP Root Ports

Answer 31

All Switches in the network will find the fastest way to get to the Root Bridge with the lowest root port cost.

Question 32

STP Designated Ports

Answer 32

A switch will decide which ports to block and which should be designated to reach the Root Bridge.

Question 33

RSTP

Answer 33

Rapid STP Adds Alternate port and Backup port to the STP setup. Backwards compatable.

Question 34

Command: spanning-tree vlan (name) priority (number)

Answer 34

Sets the bridge priority of a switch for the selected VLAN. Number must be in increments of 4096.

Question 35

VTP

Answer 35

VLAN Trunk Protocol Protocol to allow switches to synchronize and exchange VLAN information Uses the following operating modes: Server Client Transparent

Question 36

VTP Transparent

Answer 36

Disables VTP

Question 37

VTP Server

Answer 37

Sends and updates VLAN configuration to all VTP clients.

Question 38

VTP Client

Answer 38

Receives and forwards VLAN configuration from a VTP server to all other VTP clients.

Question 39

Command: show vtp status

Answer 39

Shows if VTP is running on a switch, how many VLANs exist, and its operating mode

Question 40

Command: (config-if) spanning-tree portfast

Answer 40

Disables STP for the selected port, allowing immediate connections.

Question 41

EtherChannels - Link aggregation

Answer 41

Bundles two or more links between switches. Has two protocols, PAgP and LACP.

Question 42

PAgP

Answer 42

Port Aggregation Protocol Cisco Proprietary Protocol for Link Aggregation. Modes are On, Desirable, and Auto.

Question 43

LACP

Answer 43

Link Aggregation Control Protocol IEEE Standard protocol for Link Aggregation. Modes are On, Active, and Passive.

Question 44

Command: interface range (interface),(interface)...

Answer 44

Enter configuration mode for multiple interfaces at the same time.

Question 45

Command: (config-if-range) channel-group (number) mode (mode)

Answer 45

Create an EtherChannel for the selected range of interfaces

Question 46

Command: show etherchannel summary

Answer 46

Shows the status of any set up etherchannels on a switch.

Question 47

FHRP

Answer 47

First hop redundancy protocols No single point of failure. Uses Virtual IP addresses (VIP). Main protocols are HSRP, VRRP, and GLBP.

Question 48

HSRP

Answer 48

Hot Standby Router Protocol - Cisco Proprietary FHRP. Similar to VRRP.

Question 49

Command: (config-if) standby (number) ip (virtual IP)

Answer 49

Enables HSRP on the specified interface

Question 50

Command: show standby brief

Answer 50

Shows the current state of active HSRP interfaces

Question 51

Router on a stick

Answer 51

Configuration that has a router connected to a switch with a Trunk connection that routes traffic between VLANs.