CCNA Routing and Switching: Scaling Networks Chapter 3

B. S1-passive and S2-active

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-passive and S2-active C. S1-on and S2-active​ D. S1-on and S2-passive

B. grouping multiple physical ports to increase bandwidth between two switches

As the network administrator you have been asked to implement EtherChannel on the corporate network. What does this configuration consist of? A. grouping two devices to share a virtual IP address B. grouping multiple physical ports to increase bandwidth between two switches C. providing redundant devices to allow traffic to flow in the event of device failure D. providing redundant links that dynamically block or forward traffic

B. The EtherChannel bundle is not working. D. One of the ports on S2 was not configured correctly.

Refer to the exhibit. A network administrator has decided that an EtherChannel between ports 0/1 and 0/2 on switches S1 and S2 would help performance. After making the configuration, the administrator notices no performance gain. Based on the output that is shown, what two possible assumptions could a network administrator make? (Choose two.) A. The EtherChannel bundle is working. B. The EtherChannel bundle is not working. C. LACP and PAgP were both used to form the EtherChannel. D. One of the ports on S2 was not configured correctly. E. Switch S2 must be configured so that the maximum number of port channels is increased. F. Switch S2 did not use a compatible EtherChannel mode.

C. The EtherChannel was not configured with the same allowed range of VLANs on each interface.

Refer to the exhibit. An EtherChannel was configured between switches S1 and S2, but the interfaces do not form an EtherChannel. What is the problem? A. The switch ports have to be configured as access ports with each port having a VLAN assigned.​ B. The interface port-channel number has to be different on each switch. C. The EtherChannel was not configured with the same allowed range of VLANs on each interface. D. The switch ports were not configured with speed and duplex mode.

B. Traffic cannot be sent to two different switches through the same EtherChannel link.

Refer to the exhibit. The administrator tried to create an EtherChannel between S1 and the other two switches via the commands that are shown, but was unsuccessful. What is the problem? A. Traffic can only be sent to two different switches if EtherChannel is implemented on Layer 3 switches.​ B. Traffic cannot be sent to two different switches through the same EtherChannel link. C. Traffic can only be sent to two different switches if EtherChannel is implemented on Gigabit Ethernet interfaces.​ D. Traffic cannot be sent to two different switches, but only to two different devices like an EtherChannel-enabled server and a switch.​

D. EtherChannel PortFast is used to reduce the amount of time that a port spends going through the spanning-tree algorithm, so that devices can start sending data sooner. Trunking can be implemented in conjunction with EtherChannel, but trunking alone does not aggregate switch links. HSRP is used to load-balance traffic across two different connections to Layer 3 devices for default gateway redundancy. HSRP does not aggregate links at either Layer 2 or Layer 3 as EtherChannel does.

Refer to the exhibit. Which switching technology would allow each access layer switch link to be aggregated to provide more bandwidth between each Layer 2 switch and the Layer 3 switch? A. trunking B. HSRP C. PortFast D. EtherChannel

D. Shut down each of the affected interfaces.

What is a best practice to use before beginning an EtherChannel implementation? A. Assign affected interfaces to VLAN 1. B. Assign affected interfaces to the management VLAN. C. Enable each of the affected interfaces. D. Shut down each of the affected interfaces. E. Assign affected interfaces to an unused VLAN.

B. allows automatic formation of EtherChannel links

What is an advantage of using LACP? A. provides a simulated environment for testing link aggregation B. allows automatic formation of EtherChannel links C. decreases the chance of a spanning-tree loop D. increases redundancy to Layer 3 devices E. decreases the amount of configuration that is needed on a switch for EtherChannel

D. aggregate ports by using EtherChannel

What is the most cost-effective method of solving interface congestion that is caused by a high level of traffic between two switches? A. insert a router between the switches B. increase uplink speed C. add more VLANs to reduce broadcast domains D. aggregate ports by using EtherChannel

A. auto

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. auto B. passive C. desirable D. active

B. active The command channel-group mode active enables LACP unconditionally, and the command channel-group mode passive enables LACP only if the port receives an LACP packet from another device. The command channel-group mode desirable enables PAgP unconditionally, and the command channel-group mode auto enables PAgP only if the port receives a PAgP packet from another device.

When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation? A. auto B. active C. desirable D. passive

C. switch 1 set to desirable; switch 2 set to desirable.​ Switch 1 and switch 2 will establish an EtherChannel if both sides are set to desirable as both sides will negotiate the link. A channel can also be established if both sides are set to on, or if one side is set to auto and the other to desirable. Setting one switch to on will prevent that switch from negotiating the formation of an EtherChannel bundle.

Which PAgP mode combination will establish an EtherChannel? A. switch 1 set to on; switch 2 set to desirable. B. switch 1 set to auto; switch 2 set to auto.​ C. switch 1 set to desirable; switch 2 set to desirable.​ D. switch 1 set to auto; switch 2 set to on.​

A. interface port-channel interface-identifier

Which command will initiate EtherChannel interface configuration mode? A. interface port-channel interface-identifier B. interface range interface-identifier C. interface interface-identifier D. channel-group group-identifier

B. A trunked port can be part of an EtherChannel bundle.

Which statement describes an EtherChannel implementation? A. PAgP cannot be used in conjunction with EtherChannel. B. A trunked port can be part of an EtherChannel bundle. C. EtherChannel can connect up to a maximum of eight separate links. D. EtherChannel operates only at Layer 2.

D. It is Cisco proprietary.

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

B. speed of the interfaces that are used for EtherChannel C. VLAN memberships of the interfaces that are used for EtherChannel D. duplex settings of the interfaces that are used for EtherChannel

Which three options must match in order to establish an EtherChannel between two directly connected switches? (Choose three.) A. port security settings on the interfaces that used for EtherChannel B. speed of the interfaces that are used for EtherChannel C. VLAN memberships of the interfaces that are used for EtherChannel D. duplex settings of the interfaces that are used for EtherChannel E. port numbers that are used for the EtherChannel F. domain names on the switches

C. source MAC to destination MAC E. source IP to destination IP Source MAC to destination MAC load balancing and source IP to destination IP load balancing are two implementation methods used in EtherChannel technology.

Which two load balancing methods can be implemented with EtherChannel technology? (Choose two.) A. destination MAC to destination IP B. destination MAC to source MAC C. source MAC to destination MAC D. destination IP to destination MAC E. source IP to destination IP F. destination IP to source IP

A. 802.3ad D. PAgP

Which two protocols are link aggregation protocols? (Choose two.) A. 802.3ad B. RSTP C. EtherChannel D. PAgP E. STP