ch.7 Configuring and verifying switch interfaces

Question 1

What is the root cause of the status codes

admin down - down/disabled

Answer 1

The shutdown command is configured on the interface

Question 2

Root cause of status codes - down/down/not connect

Answer 2

No cable, bad cable, wrong cable pinouts, speed mismatch, neighboring device is either powered off shutdown or disabled

Question 3

Root cause of up/down/not connected

Answer 3

Not expected on LAN switch physical interfaces

Question 4

Root cause of down/down(err-disabled)/err-disabled

Answer 4

Port security has disabled the interface

Question 5

Root cause of up/up/connected

Answer 5

The interface is working

Question 6

What is the command that shows brief information on interfaces

Answer 6

show interfaces status

Question 7

What command shows in depth amount of information on interaces

Answer 7

show interfaces

Question 8

What happens when one device uses autonegotioation and the other disables it

Answer 8

The first device must resort to default settings

Question 9

When does duplex default to half duplex

Answer 9

When speed is 10 or 100

Question 10

When does duplex default to full-duplex

Answer 10

When speeds are higher than 100

Question 11

What speed is defaulted to during disabled negotiation

Answer 11

the slowest speed supported

Question 12

When you configure speed and duplex manually what happens to the auto-negotiation

Answer 12

It gets disabled

Question 13

Runts

Answer 13

Frames that did not meet the minimum frame size requirement. Can be caused by collisions

Question 14

Giants

Answer 14

Frames that exceed the maximum frame size requirement

Question 15

Input errors

Answer 15

A total of many conters, including runts, giants, no buffer, CRC, frame, overrun, and ignored counts

Question 16

CRC

Answer 16

Received frames that did not pass the FCS math, can be caused by collisions

Question 17

Frame

Answer 17

Received frames that have an illegal format, can be caused by collisions

Question 18

Packets Output

Answer 18

Total number of packets forwarded out the interface

Question 19

Output errors

Answer 19

Total number of packets that the switch port tried to transmit, but for which some problem occured

Question 20

Collisions

Answer 20

Counter of all collisions that occur when the interface is transmitting a frame

Question 21

Late collisons

Answer 21

The subset of all collisions that happen after the 64th byte of the frame has been transmitted

Question 22

what is the command to enter interface mode

Answer 22

interface fa or g or f

Question 23

What is the command to select multiple interfaces in the cli

Answer 23

interface range f0/1 f 0/10

Question 24

what is the command to turn off or turn on an interface

Answer 24

shutdown or no shutdown

Question 25

Whats the command to configure the speed of an interface

Answer 25

speed {10 | 100 | 1000 | auto }

Question 26

What is the command to configure duplex

Answer 26

duplex {auto | full | half}

Question 27

What is the command to set a description on an interface

Answer 27

description [insert text here]

Question 28

What are the commands to revert to the default settings for each interface

Answer 28

no duplex no speed no description

Question 29

show running-config

Answer 29

Lists the currently used config

Question 30

show running-config |interface number

Answer 30

Displays the running-config excerpt of the listed interface and its subbcommands only

Question 31

show mac address-table dynamic [interface type number] [vlan id]

Answer 31

Lists static MAC addresses and MAC address learned or defined with port security

Question 32

show interfaces [type number] status

Answer 32

Lists one output per interface

Question 33

show interface [type number]

Answer 33

Lists detailed status and statistical info about all interfaces

Question 34

show interfaces description

Answer 34

Displays one line of information per interface. with a two-item status and includes any description that is configured on the interfaces