What is the function of STP in a scalable network?

It disables redundant paths to eliminate Layer 2 loops.

It decreases the size of the failure domain to contain the impact of failures.

It protects the edge of the enterprise network from malicious activity.

It combines multiple switch trunk links to act as one logical link for increased bandwidth.

What is a characteristic of spanning tree?

It is enabled by default on Cisco switches.

It is used to discover information about an adjacent Cisco device.

It has a TTL mechanism that works at Layer 2.

It prevents propagation of Layer 2 broadcast frames.

What is the purpose of the Spanning Tree Protocol (STP)?

creates smaller collision domains

prevents routing loops on a router

allows Cisco devices to exchange routing table updates

creates smaller broadcast domains

What is the value used to determine which port on a non-root bridge will become a root port in a STP network?

the highest MAC address of all the ports in the switch

the lowest MAC address of all the ports in the switch

What are two drawbacks to turning spanning tree off and having multiple paths through the Layer 2 switch network? (Choose two.)

The MAC address table becomes unstable.

Broadcast frames are transmitted indefinitely.

Port security becomes unstable.

Port security shuts down all of the ports that have attached devices.

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

Traffic cannot be sent to two different switches, but only to two different devices like an EtherChannel-enabled server and a switch.

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.

Which statement is true regarding the use of PAgP to create EtherChannels?

It increases the number of ports that are participating in spanning tree.

It requires more physical links than LACP does.

It mandates that an even number of ports (2, 4, 6, etc.) be used for aggregation.

What are two requirements to be able to configure an EtherChannel between two switches? (Choose two.)

All the interfaces need to work at the same speed.

All the interfaces need to be working in the same duplex mode.

All interfaces need to be assigned to different VLANs.

Different allowed ranges of VLANs must exist on each end.

The interfaces that are involved need to be contiguous on the switch.

What can be determined about the EtherChannel bundle?

A Cisco proprietary protocol was used to negotiate the EtherChannel link.

The EtherChannel bundle is down.

Two Gigabit Ethernet ports are used to form the EtherChannel.

The EtherChannel bundle is operating at both Layer 2 and Layer 3.

Which statement describes the effect after the commands are issued on SW1 and SW2?

The EtherChannel fails to establish.

The EtherChannel is established after SW2 initiates the link request.

The EtherChannel is established after SW1 initiates the link request.

The EtherChannel is established without negotiation.

What change in configuration would correct the problem?

Configure SW2 EtherChannel mode to desirable.

Configure SW2 EtherChannel mode to on.

Configure SW1 EtherChannel mode to on.

Configure SW2 EtherChannel mode to auto.

What is the result if one of the three interfaces is down?

The remaining two interfaces continue to load balance traffic.

The remaining two interfaces become separate links between the two switches.

One interface becomes an active link for data traffic and the other becomes a backup link.

Which command must be used on SW2 to enable this EtherChannel?

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

SW2(config-if-range)# channel-group 1 mode passive

SW2(config-if-range)# channel-group 1 mode on

SW2(config-if-range)# channel-group 1 mode active

What is a requirement to configure a trunking EtherChannel between two switches?

The allowed range of VLANs must be the same on both switches.

The participating interfaces must be assigned the same VLAN number on both switches.

The participating interfaces must be physically contiguous on a switch.

The participating interfaces must be on the same module on a switch.

What are two advantages of using LACP? (Choose two.)

It allows directly connected switches to negotiate an EtherChannel link.

It allows the use of multivendor devices.

It provides a simulated environment for testing link aggregation.

It eliminates the need for configuring trunk interfaces when deploying VLANs on multiple switches.

It decreases the amount of configuration that is needed on a switch.

What are two advantages of EtherChannel? (Choose two.)

Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.

Configuring the EtherChannel interface provides consistency in the configuration of the physical links.

Load balancing occurs between links configured as different EtherChannels.

Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a forwarding state.

EtherChannel uses upgraded physical links to provide increased bandwidth.

Refer to the exhibit. What are the possible port roles for ports A, B, C, and D in this RSTP-enabled network?

alternate, designated, root, root

designated, alternate, root, root

alternate, root, designated, root

designated, root, alternate, root

Which set of configuration commands issued on SW1 will successfully complete the EtherChannel link between SW1 and SW2?

interface GigabitEthernet0/1 channel-group 1 mode desirable

interface GigabitEthernet0/1 no shutdown

interface Port-channel 1 no shutdown

interface GigabitEthernet0/2 channel-group 2 mode desirable

Which statement describes an EtherChannel implementation?

A trunked port can be part of an EtherChannel bundle.

EtherChannel operates only at Layer 2.

PAgP cannot be used in conjunction with EtherChannel.

EtherChannel can support up to a maximum of ten separate links.

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 port aggregation protocol PAgP is misconfigured.

FastEthernet ports Fa0/1, Fa0/2, and Fa0/3 do not join the EtherChannel.

Which statement describes a characteristic of EtherChannel?

It is made by combining multiple physical links that are seen as one link between two switches.

It can combine up to a maximum of 4 physical links.

It can bundle mixed types of 100 Mb/s and 1Gb/s Ethernet links.

It consists of multiple parallel links between a switch and a router.

Which mode configuration setting would allow formation of an EtherChannel link between switches SW1 and SW2 without sending negotiation traffic?

trunking enabled on both switches

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

The interface port-channel number has to be different on each switch.

The switch ports were not configured with speed and duplex mode.

The switch ports have to be configured as access ports with each port having a VLAN assigned.

What are two load-balancing methods in the EtherChannel technology? (Choose two.)

combination of source port and IP to destination port and IP

source port to destination port

combination of source MAC and IP to destination MAC and IP

N2C2

Authored by Gelton Blanca

Other

Professional Development

Used 1+ times

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49 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What additional information is contained in the 12-bit extended system ID of a BPDU?

MAC address

VLAN ID

IP address

port ID

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During the implementation of Spanning Tree Protocol, all switches are rebooted by the network administrator. What is the first step of the spanning-tree election process?

Each switch with a lower root ID than its neighbor will not send BPDUs.

All the switches send out BPDUs advertising themselves as the root bridge.

Each switch determines the best path to forward traffic.

Each switch determines what port to block to prevent a loop from occurring.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which STP port role is adopted by a switch port if there is no other port with a lower cost to the root bridge?

designated port

root port

alternate

disabled port

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which two concepts relate to a switch port that is intended to have only end devices attached and intended never to be used to connect to another switch? (Choose two.)

bridge ID

edge port

extended system ID

PortFast

PVST+

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which three components are combined to form a bridge ID?

IP address

bridge priority

extended system ID

MAC address

cost

MULTIPLE SELECT QUESTION

30 sec • 1 pt

In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.)

disabled

forwarding

listening

blocking

learning

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

lowest MAC address

lowest IP address

highest IP address

highest MAC address

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N2C2

What additional information is contained in the 12-bit extended system ID of a BPDU?

During the implementation of Spanning Tree Protocol, all switches are rebooted by the network administrator. What is the first step of the spanning-tree election process?

Which STP port role is adopted by a switch port if there is no other port with a lower cost to the root bridge?

Which two concepts relate to a switch port that is intended to have only end devices attached and intended never to be used to connect to another switch? (Choose two.)

Which three components are combined to form a bridge ID?

In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.)

If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

What is the function of STP in a scalable network?

What is a characteristic of spanning tree?

Which spanning tree standard supports only one root bridge so that traffic from all VLANs flows over the same path?

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