Module 6

Question 1

What is EtherChannel?

Answer 1

A link aggregation technology that allows multiple physical Ethernet links to be grouped into one single logical link.

Question 2

What are the benefits of using EtherChannel?

Answer 2

• Fault-tolerance
• Load sharing
• Increased bandwidth
• Redundancy

Question 3

What is a port channel in the context of EtherChannel?

Answer 3

The resulting virtual interface created when an EtherChannel is configured.

Question 4

Which protocols can be used to form EtherChannels?

Answer 4

• Port Aggregation Protocol (PAgP)
• Link Aggregation Control Protocol (LACP)

Question 5

What does LACP stand for?

Answer 5

Link Aggregation Control Protocol

Question 6

What does PAgP stand for?

Answer 6

Port Aggregation Protocol

Question 7

What is the function of LACP?

Answer 7

To negotiate an automatic bundle of ports by sending LACP packets to the other switch.

Question 8

Which LACP modes exist?

Answer 8

• On
• Active
• Passive

Question 9

Which PAgP modes exist?

Answer 9

• On
• Desirable
• Auto

Question 10

True or False: All Ethernet interfaces must support EtherChannel.

Answer 10

True

Question 11

What must be configured the same for all interfaces in an EtherChannel?

Answer 11

• Speed
• Duplex mode
• VLAN assignment

Question 12

What command displays the general status of the port channel interface?

Answer 12

show interfaces port-channel

Question 13

Fill in the blank: An EtherChannel supports the same allowed range of VLANs on all the interfaces in a _______.

Answer 13

[trunking EtherChannel]

Question 14

What happens if the allowed range of VLANs is not the same across EtherChannel interfaces?

Answer 14

The interfaces do not form an EtherChannel.

Question 15

What is the maximum number of ports that can be included in a single EtherChannel?

Answer 15

Up to eight compatibly-configured Ethernet ports.

Question 16

True or False: An EtherChannel can consist of mixed interface types.

Answer 16

False

Question 17

What is a common issue with EtherChannel configurations?

Answer 17

Assigned ports in the EtherChannel are not part of the same VLAN.

Question 18

What is the effect of STP on EtherChannel?

Answer 18

STP may block one of the bundles to prevent switching loops.

Question 19

What command should be used to verify that EtherChannel is operational?

Answer 19

show etherchannel summary

Question 20

What command allows you to view detailed output of a port channel configuration?

Answer 20

show run | begin interface port-channel

Question 21

What does the PAgP desirable mode do?

Answer 21

It initiates negotiations with other interfaces by sending PAgP packets.

Question 22

What is the role of PAgP in EtherChannel?

Answer 22

To help create the EtherChannel link by ensuring configurations are compatible.

Question 23

What is the primary purpose of EtherChannel?

Answer 23

To increase bandwidth and redundancy between devices.

Question 24

What should be ensured when configuring trunking on EtherChannel?

Answer 24

Verify the trunking mode on all ports that make up the EtherChannel.

Question 25

What is the maximum bandwidth provided by Fast EtherChannel?

Answer 25

800 Mbps

Question 26

What is the maximum bandwidth provided by Gigabit EtherChannel?

Answer 26

8 Gbps

Question 27

What command displays information about a specific port channel interface?

Answer 27

show etherchannel port-channel

Question 28

What is EtherChannel?

Answer 28

A link aggregation technology that groups multiple physical Ethernet links into one logical link.

Question 29

What is the primary purpose of EtherChannel?

Answer 29

To provide fault-tolerance, load sharing, increased bandwidth, and redundancy between devices.

Question 30

What is a port channel?

Answer 30

The resulting virtual interface when an EtherChannel is configured.

Question 31

True or False: EtherChannel technology was originally developed by Cisco.

Answer 31

True

Question 32

List the commands used to verify an EtherChannel configuration.

Answer 32

* show interfaces port-channel * show etherchannel summary * show etherchannel port-channel * show interfaces etherchannel

Question 33

What are common issues that can prevent an EtherChannel from forming?

Answer 33

* Assigned ports not in the same VLAN * Different native VLANs * Inconsistent trunking configurations * Different allowed VLAN ranges * Incompatible PAgP and LACP configurations

Question 34

Fill in the blank: EtherChannel provides _______ because the overall link is seen as one logical connection.

Answer 34

redundancy

Question 35

What is the function of Spanning Tree Protocol (STP) in relation to EtherChannel?

Answer 35

To block redundant links to prevent switching loops.

Question 36

What are the two dynamic negotiation protocols used in EtherChannel?

Answer 36

* Port Aggregation Protocol (PAgP) * Link Aggregation Control Protocol (LACP)

Question 37

What is a key feature of the EtherChannel operation?

Answer 37

It allows multiple links to be connected without being blocked by STP.

Question 38

What is the difference between PAgP and LACP in terms of interface bundling?

Answer 38

LACP supports more interfaces bundled into a group compared to PAgP.

Question 39

True or False: Configuration changes for EtherChannel must be made under the physical interfaces.

Answer 39

False

Question 40

What is the purpose of Check Your Understanding (CYU) activities?

Answer 40

To help learners gauge their understanding of the content.

Question 41

What is the recommended activity type for configuring EtherChannel?

Answer 41

Syntax Checker

Question 42

What is the significance of the command 'channel-group X mode [desirable | auto | active | passive]'?

Answer 42

It configures the mode for the EtherChannel group.

Question 43

Fill in the blank: The __________ is a simulation and modeling activity designed to explore skills.

Answer 43

PT Activity