Topic 4 : EtherChannel

What is the primary purpose of EtherChannel technology?

• To enhance the security of network traffic

• To reduce the number of switches in a network

• To provide fault-tolerance and load sharing

• To increase the number of VLANs

Which protocol is used for automatic negotiation of EtherChannel links?

• Dynamic Host Configuration Protocol (DHCP)

• Internet Control Message Protocol (ICMP)

• Link Aggregation Control Protocol (LACP)

• Spanning Tree Protocol (STP)

What happens when Spanning Tree Protocol (STP) blocks one of the redundant links in an EtherChannel?

• Only the blocked link is inactive

• All physical links in the EtherChannel become inactive

• The switch reconfigures the EtherChannel automatically

• The EtherChannel remains fully operational

Which of the following is a restriction when implementing EtherChannel?

• EtherChannel can consist of up to 16 ports

• All ports must be configured as Layer 3

• EtherChannel can only be configured on routers

• All interfaces must be of the same type

What is the maximum bandwidth provided by a Gigabit EtherChannel?

• 800 Mbps

• 16 Gbps

• 400 Mbps

• 8 Gbps

Which mode in PAgP places an interface in an active negotiating state?

• On

• Desirable

• Passive

• Auto

What must be consistent across all interfaces in an EtherChannel?

• VLAN range only

• Speed and duplex settings

• Physical location of the interfaces

• IP address configuration

What command is used to verify the status of a port channel interface?

• show interfaces

• show etherchannel summary

• show ip interface

• show running-config

Which of the following modes in LACP initiates negotiations with other ports?

• On

• Active

• Passive

• Disabled

What is a common issue that can prevent EtherChannel from forming?

• Using only one switch in the configuration

• All ports configured as access ports

• Different native VLANs on member ports

• Configuring EtherChannel on Layer 3 interfaces