All Chapters

Question 1

Name the purpose of the command : show MAC address-table?

Answer 1

Shows all Mac table entries of all types

Question 2

Name the purpose of the command : show mac address-table dynamic?

Answer 2

Shows all dynamically learn Mac table entries

Question 3

Name the purpose of the command show MAC address-table dynamic vlan ‘vlan id’

Answer 3

Shows all dynamically learns entries in that VLAN

Question 4

Name the purpose of the command : show MAC address-table dynamic address ‘mac-address’

Answer 4

Shows the dynamically learn Mac table entries with that Mac address

Question 5

Name the purpose of the command :show MAC address-table dynamic interface ‘interface id’

Answer 5

Shows all dynamically learned mac table entries associated with the interface

Question 6

What does the term flooding mean in CCNA?

Answer 6

Means that the switch for copies of the frame of all ports, except for on which the frame was received

Question 7

What command will let you see dynamically learned Mac addresses?

Answer 7

Show MAC address-table dynamic

Question 8

What command can you use to erase the start up config file

Answer 8

Erase startup-config

Question 9

What are the two types of VLAN?

Answer 9

Normal and extended

Question 10

What is the range of normal Vlans?

Answer 10

1-1005

Question 11

What is the range for extended range vlans?

Answer 11

1006-4094

Question 12

What are the two vlan trunking methods?

Answer 12

ISL & 802.1q

Question 13

Which VLANS cannot be deleted, or used as access port ?

Answer 13

VLAN 1,1002-1005

Question 14

In a LAN, which of the following terms equates the term VLAN?

Answer 14

Broadcast domain

Question 15

Which command will disable Vtp completely?

Answer 15

Vtp mode off

Question 16

What happens when both switches are on switchport mode dynamic auto ?

Answer 16

They do not trunk

Question 17

What does dynamic auto tell the switch?

Answer 17

To sit there and wait on the other switch to start the negotiations

Question 18

What does switch port mode dynamic desirable tell the switch?

Answer 18

It asked to switch to both negotiate, as well as to begin negotiation process, rather than waiting on the other device

Question 19

Cisco recommends disabling trunk negotiation on most ports for

Answer 19

Better security

Question 20

Which command will disable DTP negotiations?

Answer 20

Switchport nonegotiate

Question 21

What are the two roles in stp?

Answer 21

Root port & Designated Port

Question 22

What are the two states in STP?

Answer 22

Forwarding & blocking

Question 23

What are the two temporary state in STP?

Answer 23

Listening and Learning

Question 24

What does the listening state in stp do?

Answer 24

The interface doesn’t forward frames, the switch removes old Mac table entries which have not received frames.

Question 25

What does the learning state in stp do?

Answer 25

Interface in this state still doesn’t forward frames but the switch begins to learn the MAC addresses of frames received on interface

Question 26

How long does it take for for interface to change from blocking to forwarding state in stp?

Answer 26

50 seconds

Question 27

What states are considered transitory states in stp?

Answer 27

Learning and listening

Question 28

What states are considered stable states in stp?

Answer 28

Blocking forwarding disabled

Question 29

RSTP calls the blocking state the ?

Answer 29

Discarding state

Question 30

How long does rstp take to converge?

Answer 30

5-10 seconds

Question 31

T/F With RSTP each switch independently generates its own hellos ?

Answer 31

True

Question 32

RSTP defines the term shared to describe ports connected to a

Answer 32

Hub

Question 33

T/F RSTP converges more slowly on shared ports as compared to all p2p ports

Answer 33

True

Question 34

STP treats each EtherChannel as a

Answer 34

Single link

Question 35

Where is portfast more appropriate to use ?

Answer 35

Connections to end-user devices

Question 36

What does the term access switches refer to?

Answer 36

Switched used to connect to endpoints devices

Question 37

What does the term distribution switch refer to?

Answer 37

Switches that don’t connect to endpoints but rather connect to each access switch

Question 38

Which stp can you configure with the command spanning-tree command?

Answer 38

MST, PVST, RAPID-PVST

Question 39

Which power of the BID will Cisco let you configure ?

Answer 39

Priority part

Question 40

How many trees does RSTP create?

Answer 40

1 the common spanning tree

Question 41

How many trees does RPSVT+ create?

Answer 41

One tree for each and every VLAN

Question 42

What is the multicast address for RSTP

Answer 42

0180.C200.0000

Question 43

What is the multicast address for RPVST+?

Answer 43

0100.0CCC.CCCD

Question 44

What is the command that lets an engineer set the switches priority in that VLAN?

Answer 44

Spanning-tree VLAN ‘x’ root primary | secondary

Question 45

What is one difference that LACP have compared to PAgP

Answer 45

LACP supports up to 16 links in a channel while PAgP supports 8 links

Question 46

What keywords are use to enable PAgP?

Answer 46

Desirable and auto

Question 47

What keywords are used to enable LACP?

Answer 47

Active and passive

Question 48

What are the two rules to follow in subnet?

Answer 48

Address in the same subnet are not separated by a router Addresses in different subnets are separated by at least one router

Question 49

What’s the formula for number of usable IP address

Answer 49

2^h-2

Question 50

What are ways that Internet community tried to solve ipv4 network exhaustion?

Answer 50

IPv6, CIDR, NAT

Question 51

What is something that routers have that switches don’t?

Answer 51

On/off button

Question 52

What layer does the line status refer to ?

Answer 52

Layer 1status

Question 53

What layer does the protocol status refer to?

Answer 53

Layer 2

Question 54

If the line status is up and the protocol status of down it is usually caused by ?

Answer 54

A mismatched data-link layer configuration

Question 55

The route table list both the ?

Answer 55

Subnet id and subnet mask

Question 56

P2P serial wan links use either?

Answer 56

HDLC or PPP