Module 6: EtherChannel

6.1.10 và 6.4.4.

Which are benefits of EtherChannel technology? (Choose all that apply.)

A. fault-tolerance
B. load sharing
C. increased bandwidth
D. link redundancy

A. fault-tolerance
B. load sharing
C. increased bandwidth
D. link redundancy

True or False? FastEthernet and GigabitEthernet links can be combined into a single EtherChannel.

A. True
B. False

B. False

True or False? PAgP and LACP are both Cisco-proprietary link aggregation protocols.

A. True
B. False

B. False

Which three are PAgP interface modes? (Choose three.)

A. on
B. auto
C. active
D. passive
E. desirable

A. on
B. auto
E. desirable

Which PAgP interface mode will initiate negotiation with other interfaces?

A. on
B. desirable
C. auto

B. desirable

Which combinations of PAgP modes will form an EtherChannel? (Choose all that apply.)

A. auto > desirable
B. desirable > on
C. auto > on
D. on > on
E. on > active
F. active > passive

A. auto > desirable
D. on > on

An EtherChannel link using LACP was formed between two switches, S1 and S2. While verifying the configuration, which mode combination could be utilized on both switches?

A. S1-passive and S2-passive
B. S1-on and S2-active
C. S1-on and S2-passive
D. S1-passive and S2-active

D. S1-passive and S2-active

When a range of ports is being configured for EtherChannel, which mode will configure PAgP so that it initiates the EtherChannel negotiation?

A. active
B. desirable
C. passive
D. auto

B. desirable

Which three interface parameters must match for an EtherChannel to form? (Choose three.)

A. PortFast mode
B. spanning-tree state
C. allowed VLANs
D. native VLAN
E. EtherChannel mode
F. trunking mode

C. allowed VLANs
D. native VLAN
F. trunking mode

What are three advantages of using EtherChannel technology? (Choose three.)

A. Configuration tasks can be done on the EtherChannel interface.
B. A spanning tree recalculation is not required when a single link within the channel goes down.
C. The Spanning Tree Protocol shuts down the unused interfaces in the bundle to avoid loops.
D. There is no need to upgrade links to faster connections to increase bandwidth.
E. EtherChannel uses multiple logical links to provide redundancy.
F. Load balancing is not needed with EtherChannel.

A. Configuration tasks can be done on the EtherChannel interface.
B. A spanning tree recalculation is not required when a single link within the channel goes down.
D. There is no need to upgrade links to faster connections to increase bandwidth.

A network administrator is configuring an EtherChannel link between two physical ports on a switch. Which statement describes the result when one of the physical ports fails?

A. An STP recalculation is needed.
B. The EtherChannel link fails.
C. The EtherChannel stops transmitting data until it is restarted.
D. The EtherChannel continues transmitting data with reduced bandwidth.

D. The EtherChannel continues transmitting data with reduced bandwidth.

When EtherChannel is implemented, multiple physical interfaces are bundled into which type of logical connection?

A. port channel
B. loopback
C. VLAN interface
D. interface range

A. port channel

When a range of ports is being configured for EtherChannel by the use of PAgP, which mode will form the bundled channel only if the port receives PAgP packets from another device?

A. desirable
B. active
C. auto
D. passive

C. auto

Which two load balancing methods can be implemented with EtherChannel technology? (Choose two.)

A. source IP to destination IP
B. source MAC to destination MAC
C. destination IP to destination MAC
D. destination MAC to source MAC
E. destination IP to source IP
F. destination MAC to destination IP

A. source IP to destination IP
B. source MAC to destination MAC

Which function is provided by EtherChannel?

A. enabling traffic from multiple VLANs to travel over a single Layer 2 link
B. spreading traffic across multiple physical WAN links
C. dividing the bandwidth of a single link into separate time slots
D. creating one logical link by using multiple physical links between two LAN switches

D. creating one logical link by using multiple physical links between two LAN switches

Which statement is true about EtherChannel technology?

A. All configuration tasks must be done on the individual ports in the EtherChannel link.
B. STP does not run on redundant EtherChannel links.
C. EtherChannel uses existing switch ports.
D. Links must be upgraded to support EtherChannel.

C. EtherChannel uses existing switch ports.

Which two mode combinations would result in the successful negotiation of an EtherChannel? (Choose two.)

A. active; on
B. passive; auto
C. desirable; desirable
D. desirable; active
E. active; passive
F. auto; auto

C. desirable; desirable
E. active; passive

Which two protocols are link aggregation protocols? (Choose two.)

A. EtherChannel
B. STP
C. PAgP
D. 802.3ad
E. RSTP

C. PAgP
D. 802.3ad

When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation?

A. active
B. auto
C. desirable
D. passive

A. active

What will happen if a network administrator puts a port that is part of an EtherChannel bundle into a different VLAN than the other ports in that bundle?

A. The EtherChannel will fail.
B. The EtherChannel bundle will stay up if the ports were configured with no negotiation between the switches to form the EtherChannel.
C. The EtherChannel bundle will stay up if either PAgP or LACP is used.
D. The EtherChannel bundle will stay up only if LACP is used.
E. The EtherChannel bundle will stay up only if PAgP is used.

A. The EtherChannel will fail.

When a range of ports is being configured for EtherChannel, which mode will configure LACP on a port only if the port receives LACP packets from another device?

A. auto
B. passive
C. desirable
D. active

B. passive

There has been an increase in network traffic between two Catalyst 2960 switches, and their FastEthernet trunk link has reached its capacity. How can traffic flow be improved?

A. Add routers between the switches to create additional broadcast domains.
B. Bundle physical ports using EtherChannel.
C. Configure smaller VLANs to decrease the size of the collision domain.
D. Increase the speed of the ports using the bandwidth command.

B. Bundle physical ports using EtherChannel.

Which statement is true regarding the use of PAgP to create EtherChannels?

A. It increases the number of ports that are participating in spanning tree.
B. It is Cisco proprietary.
C. It mandates that an even number of ports (2, 4, 6, etc.) be used for aggregation.
D. It requires full duplex.
E. It requires more physical links than LACP does

B. It is Cisco proprietary.

Which combination of channel-group modes will establish an EtherChannel?

A. Switch 1 set to auto; switch 2 set to auto.
B. Switch 1 set to auto; switch 2 set to on.
C. Switch 1 set to desirable; switch 2 set to desirable.
D. Switch 1 set to on; switch 2 set to desirable.

C. Switch 1 set to desirable; switch 2 set to desirable.

Which interface configuration command will enable the port to initiate an LACP EtherChannel?

A. channel-group mode active
B. channel-group mode auto
C. channel-group mode desirable
D. channel-group mode on
E. channel-group mode passive

A. channel-group mode active

Which interface configuration command will enable the port to establish an EtherChannel only if it receives PAgP packets from the other switch?

A. channel-group mode active
B. channel-group mode auto
C. channel-group mode desirable
D. channel-group mode on
E. channel-group mode passive

B. channel-group mode auto

Which statement describes a characteristic of EtherChannel?

A. It can combine up to a maximum of 4 physical links.
B. It can bundle mixed types of 100 Mbps and 1 Gbps Ethernet links.
C. It consists of multiple parallel links between a switch and a router.
D. It is made by combining multiple physical links that are seen as one link between two switches.

D. It is made by combining multiple physical links that are seen as one link between two switches.

What are two advantages of using LACP? (Choose two.)

A. LACP allows automatic formation of EtherChannel links.
B. LACP allows use of multivendor devices.
C. LACP decreases the amount of configuration that is needed on a switch for EtherChannel.
D. LACP eliminates the need for the Spanning Tree Protocol.
E. LACP increases redundancy to Layer 3 devices.
F. LACP provides a simulated environment for testing link aggregation.

A. LACP allows automatic formation of EtherChannel links.
B. LACP allows use of multivendor devices.

Which three settings must match in order for switch ports to form an EtherChannel? (Choose three.)

A. Non-trunk ports must belong to the same VLAN.
B. Port security violation settings on interconnecting ports must match.
C. The duplex settings on interconnecting ports must match.
D. The port channel group number on interconnecting switches must match.
E. The SNMP community strings must match.
F. The speed settings on interconnecting ports must match.

A. Non-trunk ports must belong to the same VLAN.
C. The duplex settings on interconnecting ports must match.
F. The speed settings on interconnecting ports must match.