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CCNA 200-301 > 7. Configuring and Verifying Switch Interfaces > Flashcards

7. Configuring and Verifying Switch Interfaces Flashcards

1.0 Network Fundamentals 1.1 Explain the role and function of network components 1.1.b L2 and L3 switches 1.4 Describe switching concepts

1
Q

Which of the following describes a way to disable IEEE standard autonegotiation on a
10/100 port on a Cisco switch?
a. Configure the negotiate disable interface subcommand
b. Configure the no negotiate interface subcommand
c. Configure the speed 100 interface subcommand
d. Configure the duplex half interface subcommand
e. Configure the duplex full interface subcommand
f. Configure the speed 100 and duplex full interface subcommands

A

f. Configure the speed 100 and duplex full interface subcommands

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2
Q 
In which of the following modes of the CLI could you configure the duplex setting for
interface Fast Ethernet 0/5?
a. User mode
b. Enable mode
c. Global configuration mode
d. VLAN mode
e. Interface configuration mode
A

e. Interface configuration mode

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3
Q

A Cisco Catalyst switch connects with its Gigabit0/1 port to an end user’s PC. The end
user, thinking the user is helping, manually sets the PC’s OS to use a speed of 1000
Mbps and to use full duplex, and disables the use of autonegotiation. The switch’s
G0/1 port has default settings for speed and duplex. What speed and duplex settings
will the switch decide to use? (Choose two answers.)
a. Full duplex
b. Half duplex
c. 10 Mbps
d. 1000 Mbps

A

a. Full duplex

d. 1000 Mbps

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4
Q

The output of the show interfaces status command on a 2960 switch shows interface
Fa0/1 in a “disabled” state. Which of the following is true about interface Fa0/1?
(Choose three answers.)
a. The interface is configured with the shutdown command.
b. The show interfaces fa0/1 command will list the interface with two status codes
of administratively down and line protocol down.
c. The show interfaces fa0/1 command will list the interface with two status codes
of up and down.
d. The interface cannot currently be used to forward frames.
e. The interface can currently be used to forward frames.

A

a. The interface is configured with the shutdown command.
b. The show interfaces fa0/1 command will list the interface with two status codes
of administratively down and line protocol down.
d. The interface cannot currently be used to forward frames.

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5
Q

Switch SW1 uses its Gigabit 0/1 interface to connect to switch SW2’s Gigabit 0/2 interface.
SW2’s Gi0/2 interface is configured with the speed 1000 and duplex full commands.
SW1 uses all defaults for interface configuration commands on its Gi0/1 interface.
Which of the following are true about the link after it comes up? (Choose two answers.)
a. The link works at 1000 Mbps (1 Gbps).
b. SW1 attempts to run at 10 Mbps because SW2 has effectively disabled IEEE standard
autonegotiation.
c. The link runs at 1 Gbps, but SW1 uses half duplex and SW2 uses full duplex.
d. Both switches use full duplex.

A

a. The link works at 1000 Mbps (1 Gbps).

d. Both switches use full duplex.

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6
Q

Switch SW1 connects via a cable to switch SW2’s G0/1 port. Which of the following
conditions is the most likely to cause SW1’s late collision counter to continue to
increment?
a. SW2’s G0/1 has been configured with a shutdown interface subcommand.
b. The two switches have been configured with different values on the speed interface
subcommand.
c. A duplex mismatch exists with SW1 set to full duplex.
d. A duplex mismatch exists with SW1 set to half duplex.

A

d. A duplex mismatch exists with SW1 set to half duplex.

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7
Q

Set interface fa0/1 with speed 100, full duplex and description - “Printer”

A

interface fa0/1
speed 100
duplex full
description Printer

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8
Q

What information does show interface status show you

A 
Name (Description)
Status
Vlan 
Duplex 
Speed
Type (port type)
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9
Q

What does interface status of notconnect mean

A

Switchport is currently not working

Cable not connected

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10
Q

Set interfaces fa0/11 to fa0/20 to speed 100

A

interface range fa0/11 - 20

speed 100

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11
Q

When you shut down an interface what will its status be

A

administratively down

protocol (disabled)

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12
Q

How do you revert default settings for duplex, speed and description

A

no duplex
no speed
no description

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13
Q

What is IEEE rules when autonegotiation fails

A

Speed: use slowest supported speed (often 10Mbps)
Duplex: if speed is 10 or 100 use half duplex else use full

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14
Q

What is Cisco rules when autonegotiation fails

A

Speed: sense the speed without use of autonegotiation. If that fails use IEEE rules
Duplex: use IEEE defaults - if 10 or 100 use half duplex else full

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15
Q

How can you disable autonegotiation between switches

A

Set speed and duplex on both switches

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16
Q

What are the speed and settings of a switch when it is set to auto and a PC is manually set to 100 and full

A

Speed 100

Half duplex

17
Q

What are the speed and settings of a switch when it is set to auto and a PC is manually set to 1000 and full

A

Speed 1000

full duplex

18
Q

What is a duplex mismatch

A

when one side is set to half duplex and the other side is full duplex

19
Q

What are the speed and duplex settings of a switch when a hub is connected and why

A

Speed 10 and half duplex because hubs do not react to autonegotiation messages

20
Q

What does line status refer to

A

Layer 1 status

21
Q

What does protocol status refer to

A

Layer 2 status

22
Q

What does interface status of disabled mean

A

shutdown command has been configured on the interface

23
Q

What is the interface status for line status administratively down and protocol status down

A

disabled

24
Q

What are maybe some reasons for interface status of notconnect

A

No cable, bad cable
Outside interference that can make cable fail
Wrong cable pinouts
speed mismatch
Neighbor device is powered off, shutdown or err-disabled

25
Q

What does interface status of err-disabled mean

A

port security had disabled the interface

26
Q

What is the interface status when the interface is working

A

connected

27
Q

What does line status of up and protocol status of down mean

A

Not expected on LAN switch physical interfaces

28
Q

How can you tell if an interface used autonegotiation to get its speed or duplex

A

show interface status

speed or duplex will have a- in front of it

29
Q

What will a speed mismatch do

A

Cause interface to go into down/down state

30
Q

What is a Runt

A

Frames that did not meet minimum frame size requirement
< 64 bytes
Can be caused by collisions

31
Q

What is a Giant

A

frames that exceed maximum frame size requirement

> 1518 bytes

32
Q

What is Input Error

A

Total or many counters that include runts, giants, no buffer, CRC, frame, overrun and ignored counts

33
Q

What is CRC count

A

Received frames that did not pass FCS

Can be caused by collisions or other physical transmission problems

34
Q

What is a Frame count

A

Received frames that have an illegal format for example ending with a partial byte
Can be caused by collisions

35
Q

What are Output Errrors

A

Number of frames that the port tried to transmit but which a problem occurred

36
Q

What is a Late Collision

A

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

37
Q

Which counter can help you determine a duplex mismatch

A

Late collision

38
Q

How can you tell interference may be a problem

A

CRC errors grow but collisions do not

39
Q

What does show interfaces description show

A

Status, protocol and description

CCNA 200-301 (8 decks)

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