SRWE | Modules 5 – 6 - CCNA 200-301

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

creating one logical link by using multiple physical links between two LAN switches

spreading traffic across multiple physical WAN links

Correct! Wrong!

What value determines the root bridge when all switches connected by trunk links have default STP configurations?

bridge priority

VLAN ID

extended system ID

MAC address

Correct! Wrong!

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

highest IP address

lowest MAC address

highest MAC address

lowest IP address

Correct! Wrong!

Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link?

PAgP

DTP

LACP

Multilink PPP

Correct! Wrong!

A small company network has six interconnected Layer 2 switches. Currently all switches are using the default bridge priority value. Which value can be used to configure the bridge priority of one of the switches to ensure that it becomes the root bridge in this design?

34816

61440

28672

32768

Correct! Wrong!

When EtherChannel is implemented, multiple physical interfaces are bundled into which type of logical connection?

VLAN interface

interface range

loopback

port channel

Correct! Wrong!

When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in the forwarding state. In which two port roles could these interfaces function while in the forwarding state? (Choose two.)

Please select 2 correct answers

root

designated

alternate

blocked

disabled

Correct! Wrong!

What is an accurate description of redundancy?

configuring a router with a complete MAC address database to ensure that all frames can be forwarded to the correct destination

configuring a switch with proper security to ensure that all traffic forwarded through an interface is filtered

designing a network to use multiple virtual devices to ensure that all traffic uses the best path through the internetwork

designing a network to use multiple paths between switches to ensure there is no single point of failure

Correct! Wrong!

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.)

Please select 2 correct answers

bridge ID

PVST+

edge port

extended system ID

PortFast

Correct! Wrong!

What is the outcome of a Layer 2 broadcast storm?

New traffic is discarded by the switch because it is unable to be processed.

Routers will take over the forwarding of frames as switches become congested.

ARP broadcast requests are returned to the transmitting host.

CSMA/CD will cause each host to continue transmitting frames.

Correct! Wrong!

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?

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

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

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

Each switch determines the best path to forward traffic.

Correct! Wrong!

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

Please select 2 correct answers

forwarding

listening

blocking

disabled

learning

Correct! Wrong!

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

the VTP revision number

the path cost

the highest MAC address of all the ports in the switch

the lowest MAC address of all the ports in the switch

Correct! Wrong!

Which protocol provides up to 16 instances of RSTP, combines many VLANs with the same physical and logical topology into a common RSTP instance, and provides support for PortFast, BPDU guard, BPDU filter, root guard, and loop guard?

PVST+

MST

STP

Rapid PVST+

Correct! Wrong!

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

Rapid PVST

PVST+

802.1D

MST

Correct! Wrong!

Which three components are combined to form a bridge ID?

Please select 3 correct answers

IP address

extended system ID

cost

port ID

bridge priority

MAC address

Correct! Wrong!

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

creates smaller broadcast domains

prevents routing loops on a router

prevents Layer 2 loops

creates smaller collision domains

allows Cisco devices to exchange routing table updates

Correct! Wrong!

Which two mode combinations would result in the successful negotiation of an EtherChannel? (Choose two.)

Please select 2 correct answers

active; passive

active; on

desirable; desirable

desirable; active

passive; auto

auto; auto

Correct! Wrong!

What is a characteristic of spanning tree?

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

It is enabled by default on Cisco switches.

It has a TTL mechanism that works at Layer 2.

It prevents propagation of Layer 2 broadcast frames.

Correct! Wrong!

A switch is configured to run STP. What term describes a field used to specify a VLAN ID?

bridge priority

MAC Address

port ID

extended system ID

Correct! Wrong!

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?

Spanning Tree Protocol will transition the failed physical interface into forwarding mode.

The EtherChannel will transition to a down state.

Spanning Tree Protocol will recalculate the remaining trunk links.

The EtherChannel will remain functional.

Correct! Wrong!

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

Please select 2 correct answers

It allows the use of multivendor devices.

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

It provides a simulated environment for testing link aggregation.

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

LACP allows Fast Ethernet and Gigabit Ethernet interfaces to be mixed within a single EtherChannel.

It allows directly connected switches to negotiate an EtherChannel link.

Correct! Wrong!

A switch is configured to run STP. What term describes a non-root port that is permitted to forward traffic on the network?

alternate port

designated port

root port

disabled

Correct! Wrong!

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

The participating interfaces must be physically contiguous on a switch.

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.

Correct! Wrong!

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

Please select 2 correct answers

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

Load balancing occurs between links configured as different EtherChannels.

EtherChannel uses upgraded physical links to provide increased bandwidth.

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

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

Correct! Wrong!

Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.)

Please select 2 correct answers

link-state dynamic routing that provides redundant routes

redundant links between Layer 2 switches

implementing VLANs to contain broadcasts

static default routes

removing single points of failure with multiple Layer 2 switches

Correct! Wrong!

When EtherChannel is configured, which mode will force an interface into a port channel without exchanging aggregation protocol packets?

active

desirable

auto

Correct! Wrong!

Which two protocols are link aggregation protocols? (Choose two.)

Please select 2 correct answers

RSTP

802.3ad

EtherChannel

STP

PAgP

Correct! Wrong!

An administrator is troubleshooting a switch and wants to verify if it is a root bridge. What command can be used to do this?

show spanning-tree

show running-config

show startup-config

show vlan

Correct! Wrong!

What are three advantages of using EtherChannel technology? (Choose three.)

Please select 3 correct answers

Configuration tasks can be done on the EtherChannel interface.

EtherChannel uses multiple logical links to provide redundancy.

Load balancing is not needed with EtherChannel.

A spanning tree recalculation is not required when a single link within the channel goes down.

There is no need to upgrade links to faster connections to increase bandwidth.

The Spanning Tree Protocol shuts down the unused interfaces in the bundle to avoid loops.

Correct! Wrong!

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?

active

auto

desirable

passive

Correct! Wrong!

When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation?

passive

active

auto

desirable

Correct! Wrong!

Which RSTP ports are connected to end devices?

designated ports

trunk ports

edge ports

root ports

Correct! Wrong!

Which statement is true about EtherChannel technology?

EtherChannel uses existing switch ports.

STP does not run on redundant EtherChannel links.

All configuration tasks must be done on the individual ports in the EtherChannel link.

Links must be upgraded to support EtherChannel.

Correct! Wrong!

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

MAC address

IP address

port ID

VLAN ID

Correct! Wrong!

A switch is configured to run STP. What term describes the switch port closest, in terms of overall cost, to the root bridge?

alternate port

root port

disabled

designated port

Correct! Wrong!

When PVST is running over a switched network, which port state can participate in BPDU frame forwarding based on BPDUs received, but does not forward data frames?

disabled

forwarding

blocking

listening

Correct! Wrong!

Which statement describes a characteristic of EtherChannel?

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

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

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

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

Correct! Wrong!

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

Please select 2 correct answers

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

The MAC address table becomes unstable.

The switch acts like a hub.

Port security becomes unstable.

Broadcast frames are transmitted indefinitely.

Correct! Wrong!

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

Please select 2 correct answers

source port to destination port

source MAC to destination MAC

source IP to destination IP

combination of source MAC and IP to destination MAC and IP

combination of source port and IP to destination port and IP

Correct! Wrong!

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 is Cisco proprietary.

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

It requires full duplex.

It requires more physical links than LACP does.

Correct! Wrong!

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

passive

auto

Correct! Wrong!

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?

The remaining two interfaces continue to load balance traffic.

The EtherChannel fails.

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

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

Correct! Wrong!

A switch is configured to run STP. What term describes the reference point for all path calculations?

root bridge

root port

designated port

alternate port

Correct! Wrong!

Which port role is assigned to the switch port that has the lowest cost to reach the root bridge?

non-designated port

root port

designated port

disabled port

Correct! Wrong!

Which two load balancing methods can be implemented with EtherChannel technology? (Choose two.)

Please select 2 correct answers

destination IP to source IP

source IP to destination IP

destination MAC to destination IP

destination MAC to source MAC

source MAC to destination MAC

destination IP to destination MAC

Correct! Wrong!

Which three port states are used by Rapid PVST+? (Choose three.)

Please select 3 correct answers

blocking

learning

listening

forwarding

discarding

trunking

Correct! Wrong!

In which two PVST+ port states are MAC addresses learned? (Choose two.)

Please select 2 correct answers

disabled

learning

listening

forwarding

blocking

Correct! Wrong!

Which two channel group modes would place an interface in a negotiating state using PAgP? (Choose two.)

Please select 2 correct answers

auto

desirable

passive

active

Correct! Wrong!

A switch is configured to run STP. What term describes a field that has a default value of 32,768 and is the initial deciding factor when electing a root bridge?

bridge ID

extended system ID

bridge priority

BPDUs

Correct! Wrong!

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-passive and S2-active

S1-on and S2-passive

S1-passive and S2-passive

S1-on and S2-active

Correct! Wrong!

Which two statements describe a switch port that is configured with PortFast? (Choose two.)

Please select 2 correct answers

The switch port should never receive BPDUs.

The switch port sends DHCP requests before transitioning to the forwarding state.

The switch port immediately transitions from the listening to the forwarding state.

The switch port immediately processes any BPDUs before transitioning to the forwarding state.

The switch port immediately transitions from blocking to the forwarding state.

Correct! Wrong!

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

Please select 2 correct answers

All the interfaces need to work at the same speed.

Different allowed ranges of VLANs must exist on each end.

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

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

All interfaces need to be assigned to different VLANs.

Correct! Wrong!

After the election of the root bridge has been completed, how will switches find the best paths to the root bridge?

Each switch will analyze the sum of all port costs to reach the root and use the path with the lowest cost.

Each switch will analyze the port states of all neighbors and use the designated ports to forward traffic to the root.

Each switch will analyze the BID of all neighbors to reach the root and use the path through the lowest BID neighbors.

Each switch will analyze the sum of the hops to reach the root and use the path with the fewest hops.

Correct! Wrong!

A set of switches is being connected in a LAN topology. Which STP bridge priority value will make it least likely for the switch to be selected as the root?

65535

61440

32768

4096

Correct! Wrong!

Which three interface parameters must match for an EtherChannel to form? (Choose three.)

Please select 3 correct answers

spanning-tree state

PortFast mode

EtherChannel mode

trunking mode

allowed VLANs

native VLAN

Correct! Wrong!

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

disabled port

root port

alternate

Correct! Wrong!

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

SW1: desirable
SW2: desirable

SW1: auto
SW2: auto
trunking enabled on both switches

SW1: passive
SW2: active

SW1: on
SW2: on

SW1: auto
SW2: auto
PortFast enabled on both switches

Correct! Wrong!

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 will fail.

The EtherChannel bundle will stay up only if LACP is used.

The EtherChannel bundle will stay up if either PAgP or LACP is used.

The EtherChannel bundle will stay up only if PAgP is used.

The EtherChannel bundle will stay up if the ports were configured with no negotiation between the switches to form the EtherChannel.

Correct! Wrong!

When a range of ports is being configured for EtherChannel, which mode will configure PAgP so that it initiates the EtherChannel negotiation?

auto

active

passive

desirable

Correct! Wrong!

Which statement describes an EtherChannel implementation?

PAgP cannot be used in conjunction with EtherChannel.

EtherChannel operates only at Layer 2.

A trunked port can be part of an EtherChannel bundle.

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

Correct! Wrong!

Which two parameters must match on the ports of two switches to create a PAgP EtherChannel between the switches? (Choose two.)

Please select 2 correct answers

MAC address

VLAN information

port ID

speed

PAgP mode

Correct! Wrong!

What is the function of STP in a scalable network?

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

It disables redundant paths to eliminate Layer 2 loops.

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

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

Correct! Wrong!

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?

An STP recalculation is needed.

The EtherChannel stops transmitting data until it is restarted.

The EtherChannel continues transmitting data with reduced bandwidth.

The EtherChannel link fails.

Correct! Wrong!

Which port state will switch ports immediately transition to when configured for PortFast?

listening

blocking

forwarding

learning

Correct! Wrong!

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?

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

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

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

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

Correct! Wrong!

SRWE | Modules 5 – 6

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SRWE | Modules 5 – 6

Which function is provided by EtherChannel?

What value determines the root bridge when all switches connected by trunk links have default STP configurations?

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

Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link?

A small company network has six interconnected Layer 2 switches. Currently all switches are using the default bridge priority value. Which value can be used to configure the bridge priority of one of the switches to ensure that it becomes the root bridge in this design?

When EtherChannel is implemented, multiple physical interfaces are bundled into which type of logical connection?

When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in the forwarding state. In which two port roles could these interfaces function while in the forwarding state? (Choose two.)

What is an accurate description of redundancy?

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.)

What is the outcome of a Layer 2 broadcast storm?

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?

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

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

Which protocol provides up to 16 instances of RSTP, combines many VLANs with the same physical and logical topology into a common RSTP instance, and provides support for PortFast, BPDU guard, BPDU filter, root guard, and loop guard?

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

Which three components are combined to form a bridge ID?

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

Which two mode combinations would result in the successful negotiation of an EtherChannel? (Choose two.)

What is a characteristic of spanning tree?

A switch is configured to run STP. What term describes a field used to specify a VLAN ID?

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?

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

A switch is configured to run STP. What term describes a non-root port that is permitted to forward traffic on the network?

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

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

Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.)

When EtherChannel is configured, which mode will force an interface into a port channel without exchanging aggregation protocol packets?

Which two protocols are link aggregation protocols? (Choose two.)

An administrator is troubleshooting a switch and wants to verify if it is a root bridge. What command can be used to do this?

What are three advantages of using EtherChannel technology? (Choose three.)

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?

When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation?

Which RSTP ports are connected to end devices?

Which statement is true about EtherChannel technology?

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

A switch is configured to run STP. What term describes the switch port closest, in terms of overall cost, to the root bridge?

When PVST is running over a switched network, which port state can participate in BPDU frame forwarding based on BPDUs received, but does not forward data frames?

Which statement describes a characteristic of EtherChannel?

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

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

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

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?

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 switch is configured to run STP. What term describes the reference point for all path calculations?

Which port role is assigned to the switch port that has the lowest cost to reach the root bridge?

Which two load balancing methods can be implemented with EtherChannel technology? (Choose two.)

Which three port states are used by Rapid PVST+? (Choose three.)

In which two PVST+ port states are MAC addresses learned? (Choose two.)

Which two channel group modes would place an interface in a negotiating state using PAgP? (Choose two.)

A switch is configured to run STP. What term describes a field that has a default value of 32,768 and is the initial deciding factor when electing a root bridge?

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?​

Which two statements describe a switch port that is configured with PortFast? (Choose two.)

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

After the election of the root bridge has been completed, how will switches find the best paths to the root bridge?

A set of switches is being connected in a LAN topology. Which STP bridge priority value will make it least likely for the switch to be selected as the root?

Which three interface parameters must match for an EtherChannel to form? (Choose three.)

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

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?

When a range of ports is being configured for EtherChannel, which mode will configure PAgP so that it initiates the EtherChannel negotiation?

Which statement describes an EtherChannel implementation?

Which two parameters must match on the ports of two switches to create a PAgP EtherChannel between the switches? (Choose two.)

What is the function of STP in a scalable network?

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?

Which port state will switch ports immediately transition to when configured for PortFast?

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?

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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?