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-passive
S1-passive and S2-active
S1-on and S2-passive
S1-passive and S2-active
Topic 6.1.0 - An EtherChannel link will be formed using LACP when both switches are in on mode or in active mode, or when one of them is in passive mode and the other is in active mode.
When a range of ports is being configured for EtherChannel, which mode will configure PAgP so that it initiates the EtherChannel negotiation?
Desirable
Passive
Auto
Active
Desirable
Topic 6.1.0 - 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.
Which three interface parameters must match for an EtherChannel to form? (Choose three.)
Native VLAN
EtherChannel mode
Trunking mode
Allowed VLANS
PortFast mode
Spanning-tree state
Native VLAN
Trunking mode
Allowed VLANS
Topic 6.1.0 - There are some EtherChannel modes that can be different and an EtherChannel will form, such as auto/desirable and active/passive. A port that is currently in the spanning tree blocking mode or has been configured for PortFast can still be used to form an EtherChannel.
What are three advantages of using EtherChannel technology? (Choose three.)
Configuration tasks can be done on the EtherChannel interface.
The Spanning Tree Protocol shuts down the unused interfaces in the bundle to avoid loops.
EtherChannel uses multiple logical links to provide redundancy.
There is no need to upgrade links to faster connections to increase bandwidth.
Load balancing is not needed with EtherChannel.
A spanning tree recalculation is not required when a single link within the channel goes down.
Configuration tasks can be done on the EtherChannel interface.
There is no need to upgrade links to faster connections to increase bandwidth.
A spanning tree recalculation is not required when a single link within the channel goes down.
Topic 6.1.0 - Most configuration tasks can be done on the EtherChannel interface, rather than on individual ports. Existing ports can be used, eliminating the need to upgrade ports to faster speeds. Spanning Tree Protocol runs on EtherChannel links in the same manner as it does on regular links, but it does not recalculate when an individual link within the channel goes down. EtherChannel also supports load balancing.
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?
The EtherChannel stops transmitting data until it is restarted.
An STP recalculation is needed.
The EtherChannel link fails.
The EtherChannel continues transmitting data with reduced bandwidth.
The EtherChannel continues transmitting data with reduced bandwidth.
Topic 6.1.0 - An EtherChannel is seen as one logical connection. The loss of one physical link within the channel does not create a change in the topology and therefore a spanning tree recalculation is not required. When one of the member ports in the EtherChannel fails, the EtherChannel link remains functional, although its overall throughput decreases because of a lost link within the EtherChannel.
When EtherChannel is implemented, multiple physical interfaces are bundled into which type of logical connection?
VLAN interface
Interface range
Loopback
Port channel
Port channel
Topic 6.1.0 - When EtherChannel is being configured, the first step is to specify what physical ports will be used in an EtherChannel group. The second step is to create the logical EtherChannel port channel interface which contains the group of physical interfaces.
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
Passive
Desirable
Auto
Auto
Topic 6.1.0 - 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.
Which two load balancing methods can be implemented with EtherChannel technology?
(Choose two.)
Destination IP to destination MAC
Destination MAC to destination IP
Destination IP to source IP
Source IP to destination IP
Source MAC to destination MAC
Destination MAC to source MAC
Source IP to destination IP
Source MAC to destination MAC
Topic 6.1.0 - Source MAC to destination MAC load balancing and source IP to destination IP load balancing are two implementation methods used in EtherChannel technology.
Which function is provided by EtherChannel?
Dividing the bandwidth of a single link into separate time slots
Enabling traffic from multiple VLANs to travel over a single Layer 2 link
Spreading traffic across multiple physical WAN links
Creating one logical link by using multiple physical links between two LAN switches
Creating one logical link by using multiple physical links between two LAN switches
Topic 6.1.0 - EtherChannel technology allows the grouping, or aggregating, of several Fast Ethernet or Gigabit switch ports into one logical channel.
Which statement is true about EtherChannel technology?
EtherChannel uses existing switch ports.
All configuration tasks must be done on the individual ports in the EtherChannel link.
STP does not run on redundant EtherChannel links.
Links must be upgraded to support EtherChannel.
EtherChannel uses existing switch ports.
Topic 6.1.0 - EtherChannel relies on existing switch ports, so there is no need to upgrade the links. Some configuration tasks are done on individual ports and some configuration tasks are done on the EtherChannel group. STP operates on EtherChannel in the same manner as it does on other redundant links.
Which two mode combinations would result in the successful negotiation of an EtherChannel? (Choose two.)
Desirable; active
Active; on
Passive; auto
Desirable; desirable
Auto; auto
Active; passive
Desirable; desirable
Active; passive
Topic 6.1.0 - The combinations of modes that will form an EtherChannel are as follows: on/on, active/passive, active/active, desirable/auto, and desirable/desirable.
Which two protocols are link aggregation protocols? (Choose two.)
STP
802.3ad
RSTP
PAgP
EtherChannel
802.3ad
PAgP
Topic 6.1.0 - The two protocols that can be used to form an EtherChannel are PAgP (Cisco proprietary) and LACP, also know as IEEE 802.3ad. STP (Spanning Tree Protocol) or RSTP (Rapid Spanning Tree Protocol) is used to avoid loops in a Layer 2 network. EtherChannel is the term that describes the bundling of two or more links that are treated as a single link for spanning tree and configuration.
When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation?
Active
Desirable
Auto
Passive
Active
Topic 6.1.0 - 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.
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?
The EtherChannel bundle will stay up if either PAgP or LACP is used.
The EtherChannel will fail.
The EtherChannel bundle will stay up only if PAgP is used.
The EtherChannel bundle will stay up only if LACP is used.
The EtherChannel bundle will stay up if the ports were configured with no negotiation between the switches to form the EtherChannel.
The EtherChannel will fail.
Topic 6.2.0 - All ports in an EtherChannel bundle must either be trunk ports or be access ports in the same VLAN. If VLAN pruning is enabled on the trunk, the allowed VLANs must be the same on both sides of the EtherChannel.
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?
Passive
Desirable
Auto
Active
Passive
Topic 6.1.0 - 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.
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Module 1 - Basic Device Configuration12
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Module 2 - Switching Concepts14
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Module 3 - VLANs16
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Module 4 - Inter-VLAN Routing15
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Checkpoint Exam - Switching Concepts, VLANs, and Inter-VLAN Routing33
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Module 5 - STP Concepts14
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Module 6 - EtherChannel15
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Checkpoint Exam - STP Concepts, EtherChannel32
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Module 7 - DHCPv415
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Module 8 - SLAAC and DHCPv613
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Module 9 - FHRP Concepts12
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Checkpoint Exam - Available and Reliable Networks33
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Module 10 - LAN Security Concepts15
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Module 11 - Switch Security Configuration15
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Module 12 - WLAN Concepts14
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Module 13 - WLAN Configuration15
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Checkpoint Exam - L2 Security and WLANs Exam33
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Module 14 - Routing Concepts15
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Module 15 - IP Static Routing15
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Module 16 - Troubleshoot Static and Default Routes10
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Checkpoint Exam - Routing Concepts and Configuration33
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CCNA - Switching, Routing and Wireless Essentials60
