CCNA 3 CH 3 STDYGDE
Which two protocols are link aggregation protocols? (Choose two.) STP 802.3ad EtherChannel RSTP PAgP
802.3ad* PAgP*
Which statement describes an EtherChannel implementation? EtherChannel can connect up to a maximum of eight separate links. EtherChannel operates only at Layer 2. PAgP cannot be used in conjunction with EtherChannel. A trunked port can be part of an EtherChannel bundle.
A trunked port can be part of an EtherChannel bundle.
The trunk link between two 2960 switches has reached its capacity. How can this be addressed in the most economical way? Decrease the size of the inter-switch collision domain by configuring additional VLANs. Combine physical ports into a high-speed logical link by configuring EtherChannel. Create additional broadcast domains by inserting a router between the switches. Increase the speed of the ports.
Combine physical ports into a high-speed logical link by configuring EtherChannel.*
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? trunking EtherChannel HSRP PortFast
EtherChannel*
Which statement is true regarding the use of PAgP to create EtherChannels? It requires more physical links than LACP does. It mandates that an even number of ports (2, 4, 6, etc.) be used for aggregation. It is Cisco proprietary. It increases the number of ports that are participating in spanning tree. It requires full duplex
It is Cisco proprietary.*
Which statement describes a characteristic of EtherChannel? It consists of multiple parallel links between a switch and a router. It can combine up to a maximum of 4 physical links. It is made by combining multiple physical links that are seen as one link between two switches. It can bundle mixed types of 100 Mb/s and 1Gb/s Ethernet links.
It is made by combining multiple physical links that are seen as one link between two switches.*
Which three settings must match in order for switch ports to form an EtherChannel? (Choose three.) Port security settings on the connected physical interfaces must be configured to the same violation mode. The SNMP community strings must be configured the same. Non-trunk ports must belong to the same VLAN The duplex settings of the switch ports on both sides of the physical link must match. The interfaces must be configured to the same speed. The switch port numbers that will be combined to form the EtherChannel must match.
Non-trunk ports must belong to the same VLAN* The interfaces must be configured to the same speed.*
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.) The EtherChannel bundle is working. One of the ports on S2 was not configured correctly. Switch S2 must be configured so that the maximum number of port channels is increased. LACP and PAgP were both used to form the EtherChannel. Switch S2 did not use a compatible EtherChannel mode. The EtherChannel bundle is not working.
One of the ports on S2 was not configured correctly.* The EtherChannel bundle is not working.*
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? S1-on and S2-active S1-passive and S2-active S1-passive and S2-passive S1-on and S2-passive
S1-passive and S2-active*
A network administrator is configuring an EtherChannel link between switches SW1 and SW2 by using the command SW1(config-if-range)# channel-group 1 mode passive. Which command must be used on SW2 to enable this EtherChannel? SW2(config-if-range)# channel-group 1 mode passive SW2(config-if-range)# channel-group 1 mode desirable SW2(config-if-range)# channel-group 1 mode active SW2(config-if-range)# channel-group 1 mode auto
SW2(config-if-range)# channel-group 1 mode active*
What is a best practice to use before beginning an EtherChannel implementation? Shut down each of the affected interfaces. Assign affected interfaces to VLAN 1. Assign affected interfaces to the management VLAN. Enable each of the affected interfaces. Assign affected interfaces to an unused VLAN.
Shut down each of the affected interfaces.*
s1(config)# interface range FastEthernet 0/0 - 1 s1(config-if-range)# channel-group 1 mode active s1(config-if-range)# interface port-channel 1 s1(config-if)# switchport mode trunk s1(config-if)#switchport trunk allowed vlan 1-5, 10 s2(config)# interface range FastEthernet 0/0 - 1 s2(config-if-range)# channel-group 1 mode active s2(config-if-range)#interface port-channel 1 s2(config-if)# switchport mode trunk s2(config-if) switchport trunk allowed vlan 1, 5, 10 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? The interface port-channel number has to be different on each switch. The switch ports were not configured with speed and duplex mode. The EtherChannel was not configured with the same allowed range of VLANs on each interface. The switch ports have to be configured as access ports with each port having a VLAN assigned.
The EtherChannel was not configured with the same allowed range of VLANs on each interface.*
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. What are two reasons why the ping messages that are issued from Laptop0 towards Laptop1 are failing? (Choose two.) The wrong cable types are connecting the two switches. The channel group mode is not set correctly on the switches. The interface VLAN 1 is shut down on both switches. The channel group should be configured as a trunk on each switch. The two interfaces on each of the switches belong to different VLANs.
The channel group should be configured as a trunk on each switch. The two interfaces on each of the switches belong to different VLANs.
s1# show etherchannel summary 1 Po1 (SD) PAgP-Protocol Ports-Fa0/1 (I) Fa0/2(I) Fa0/3(I) SD-Layer 2, Down Refer to the exhibit. A network administrator issued the show etherchannel summary command on the switch S1. What conclusion can be drawn? The etherchannel is not functional. The etherchannel is suspended. The port aggregation protocol PAgP is misconfigured. FastEthernet ports FA0/1, FA0/2, and FA0/3 do not join the EtherChannel.
The etherchannel is not functional.*
S1(config)# interface range fa0/1-4 S1(config-if-range)# channel-group 1 mode on 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? Traffic cannot be sent to two different switches through the same EtherChannel link. Traffic can only be sent to two different switches if EtherChannel is implemented on Gigabit Ethernet interfaces. Traffic can only be sent to two different switches if EtherChannel is implemented on Layer 3 switches. Traffic cannot be sent to two different switches, but only to two different devices like an EtherChannel-enabled server and a switch.
Traffic cannot be sent to two different switches through the same EtherChannel link.*
When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation? desirable auto active passive
active
What is the most cost-effective method of solving interface congestion that is caused by a high level of traffic between two switches? aggregate ports by using EtherChannel insert a router between the switches increase uplink speed add more VLANs to reduce broadcast domains
aggregate ports by using EtherChannel*
What is an advantage of using LACP? decreases the chance of a spanning-tree loop provides a simulated environment for testing link aggregation allows automatic formation of EtherChannel links decreases the amount of configuration that is needed on a switch for EtherChannel increases redundancy to Layer 3 devices
allows automatic formation of EtherChannel links*
What are two advantages of using LACP? (Choose two.) provides a simulated environment for testing link aggregation allows use of multivendor devices decreases the amount of configuration that is needed on a switch for EtherChannel increases redundancy to Layer 3 devices eliminates the need for the spanning-tree protocol allows automatic formation of EtherChannel links
allows use of multivendor devices* allows automatic formation of EtherChannel links*
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? active desirable auto passive
auto*
As the network administrator you have been asked to implement EtherChannel on the corporate network. What does this configuration consist of? grouping multiple physical ports to increase bandwidth between two switches grouping two devices to share a virtual IP address providing redundant devices to allow traffic to flow in the event of device failure providing redundant links that dynamically block or forward traffic
grouping multiple physical ports to increase bandwidth between two switches*
Which command will initiate EtherChannel interface configuration mode? interface port-channel interface-identifier interface interface-identifier interface range interface-identifier channel-group group-identifier
interface port-channel interface-identifier*
This command shows the list of ports in the port channel and the time since the ports are bundled
show etherchannel port-channel
This command is used to check what port channels are configured on a switch
show etherchannel summary
This command shows information about the status of the port involved in the Etherchannel
show interfaces fa0/2 etherchannel
This command shows information about the reliability of the port-channel
show interfaces port-channel1
Which two load balancing methods can be implemented with EtherChannel technology? (Choose two.) destination IP to source IP destination MAC to destination IP source IP to destination IP source MAC to destination MAC destination IP to destination MAC destination MAC to source MAC
source IP to destination IP source MAC to destination MAC
Which three options must match in order to establish an EtherChannel between two directly connected switches? (Choose three.) speed of the interfaces that are used for EtherChannel port numbers that are used for the EtherChannel VLAN memberships of the interfaces that are used for EtherChannel duplex settings of the interfaces that are used for EtherChannel port security settings on the interfaces that used for EtherChannel domain names on the switches
speed of the interfaces that are used for EtherChannel* port numbers that are used for the EtherChannel VLAN memberships of the interfaces that are used for EtherChannel* duplex settings of the interfaces that are used for EtherChannel*
Which PAgP mode combination will establish an EtherChannel? switch 1 set to desirable; switch 2 set to desirable. switch 1 set to on; switch 2 set to desirable. switch 1 set to auto; switch 2 set to auto. switch 1 set to auto; switch 2 set to on.
switch 2 set to desirable.*
