Modules 5-6 Redundant Networks

What is a characteristic of spanning tree? A. It is enabled by default on Cisco switches. B. It has a TTL mechanism that works at Layer 2. C. It is used to discover information about an adjacent Cisco device. D. It prevents propagation of Layer 2 broadcast frames.

A. It is enabled by default on Cisco switches.

What are two load-balancing methods in the EtherChannel technology? (Choose two.) A. source IP to destination IP B. combination of source MAC and IP to destination MAC and IP C. source MAC to destination MAC D. combination of source port and IP to destination port and IP E. source port to destination port

A. source IP to destination IP C. source MAC to destination MAC

A network administrator configured an EtherChannel link with three interfaces between two switches. What is the result if one of the three interfaces is down? A. The EtherChannel fails. B. The remaining two interfaces become separate links between the two switches. C. One interface becomes an active link for data traffic and the other becomes a backup link. D. The remaining two interfaces continue to load balance traffic.

D. The remaining two interfaces continue to load balance traffic.

What are two advantages of EtherChannel? (Choose two.) A. Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a forwarding state. B. Configuring the EtherChannel interface provides consistency in the configuration of the physical links. C. Load balancing occurs between links configured as different EtherChannels. D. EtherChannel uses upgraded physical links to provide increased bandwidth. E. Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.

B. Configuring the EtherChannel interface provides consistency in the configuration of the physical links. E. Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.

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 auto . Which command must be used on SW2 to enable this EtherChannel? A. SW2(config-if-range)# channel-group 1 mode on B. SW2(config-if-range)# channel-group 1 mode desirable C. SW2(config-if-range)# channel-group 1 mode active D. SW2(config-if-range)# channel-group 1 mode passive

B. SW2(config-if-range)# channel-group 1 mode desirable

A network administrator has configured an EtherChannel between two switches that are connected via four trunk links. If the physical interface for one of the trunk links changes to a down state, what happens to the EtherChannel? A. Spanning Tree Protocol will transition the failed physical interface into forwarding mode. B. The EtherChannel will remain functional. C. Spanning Tree Protocol will recalculate the remaining trunk links. D. The EtherChannel will transition to a down state.

B. The EtherChannel will remain functional.

Which two parameters must match on the ports of two switches to create a PAgP EtherChannel between the switches? (Choose two.) A. MAC address B. speed C. PAgP mode D. port ID E. VLAN information

B. speed E. VLAN information

What are two requirements to be able to configure an EtherChannel between two switches? (Choose two.) A. All interfaces need to be assigned to different VLANs. B. Different allowed ranges of VLANs must exist on each end. C. All the interfaces need to work at the same speed. D. The interfaces that are involved need to be contiguous on the switch. E. All the interfaces need to be working in the same duplex mode.

C. All the interfaces need to work at the same speed. E. All the interfaces need to be working in the same duplex mode.

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

C. It is Cisco proprietary.