CISCO II Midterm

Show controllers

Which command displays information about the auto-MDIX setting for a specific interface?​

Show controllers

Show processes

Show running-config

Show interfaces

It applies an IPv4 address to the virtual interface.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# ip address 172.18.33.88 255.255.255.0 command?

It updates the MAC address table for the associated port.

It activates a virtual or physical switch interface.

It applies an IPv4 address to the virtual interface

.

It permits an IPv6 address to be configured on a switch physical interface.

It applies an IPv6 address to the virtual interface.

It enters the global configuration mode.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw# configure terminal command?

It enters configuration mode for a switch virtual interface.

It enters the global configuration mode.

It applies an IPv4 address to the virtual interface.

It permits an IPv6 address to be configured on a switch physical interface.

It updates the MAC address table for the associated port.

It disables a virtual or physical switch interface.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# shutdown command?

It saves the startup configuration to the running configuration.

It disables a virtual or physical switch interface.

It activates a virtual or physical switch interface.

It saves the running configuration to NVRAM.

It updates the MAC address table for the associated port.

It applies an IPv6 address to the virtual interface.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# ipv6 address 2001:db8:a2b4:88::1/64 command?

It applies an IPv6 address to the virtual interface.

It permits an IPv6 address to be configured on a switch physical interface.

It applies an IPv4 address to the virtual interface.

It updates the MAC address table for the associated port.

It activates a virtual or physical switch interface.

It returns to global configuration mode.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# exit command?

It returns to privileged mode.

It configures the default gateway for the switch.

It returns to global configuration mode.

It enters user mode.

It saves the startup configuration to the running configuration.

It enters privileged mode.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw> enable command?

It enters the global configuration mode.

It updates the MAC address table for the associated port.

It enters configuration mode for a switch virtual interface.

It permits an IPv6 address to be configured on a switch physical interface

.

It enters privileged mode.

It allows data to flow in both directions at the same time on the interface.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# duplex full command?

It allows data to flow in only one direction at a time on the interface

It encrypts user-mode passwords when users connect remotely.

It configures the switch as the default gateway.

It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable.

It allows data to flow in both directions at the same time on the interface.

On the half-duplex end of the connection

If one end of an Ethernet connection is configured for full-duplex and the other end of the connection is configured for half-duplex, where would late collisions be observed?

On the half-duplex end of the connection

On the full-duplex end of the connection

On both ends of the connection

Only on serial interfaces

Boot system

Which command is used to set the BOOT environment variable that defines where to find the IOS image file on a switch?

Config-register

Boot system

Boot loader

Confreg

BOOT environment variable

What does a switch use to locate and load the IOS image?

IOS image file

POST

Startup-config

NVRAM

BOOT environment variable

SSH

Which protocol adds security to remote connections?

NetBEUI

HTTP

SSH

FTP

POP

It is a logical interface internal to the router.

What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?​

Only one loopback interface can be enabled on a router.​

It is a logical interface internal to the router.

The no shutdown command is required to place this interface in an UP state.​

It is assigned to a physical port and can be connected to other devices.

64 bytes

What is the minimum Ethernet frame size that will not be discarded by the receiver as a runt frame?

1024 bytes

512 bytes

64 bytes

1500 bytes

After POST execution

After which step of the switch bootup sequence is the boot loader executed?

After CPU initialization

After POST execution

After IOS localization

After flash file system initialization

It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# mdix auto command?

It updates the MAC address table for the associated port.

It applies an IPv4 address to the virtual interface.

It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable.

It applies an IPv6 address to the virtual interface.

It permits an IPv6 address to be configured on a switch physical interface.

An increase in the size of the broadcast domain

Which impact does adding a Layer 2 switch have on a network?

An increase in the number of network collisions

An increase in the size of the broadcast domain

An increase in the size of the collision domain

An increase in the number of dropped frames

Store-and-forward

Which switching method ensures that the incoming frame is error-free before forwarding?

Cut-through

Store-and-forward

FCS

Fragment free

8

Refer to the exhibit. How many broadcast domains are displayed?

16

4

8

1

55

CAM

Where is the switch table stored?

CAM

Flash

ROM

NVRAM

Source MAC Address

What does the switch use to build its MAC address table?

Destination MAC Address

Source IP Address

Destination IP address

Source MAC Address

FCS

What value does a switch use to check for errors in a frame?

Frame header length

Packet header length

VLAN ID

FCS

Fragment-free

What type of switching method examines the first 64-bytes of a frame to make sure no fragmentation has occurred?

Store-and-process

Fragment-free

Store-and-Forward

Rapid frame-forwarding

Fast boot environment

Which characteristic of a switch does NOT alleviate network congestion?

Large Frame Buffers

Fast boot environment

High Port Density

Fast Internal Switching

Fast port speeds

Switch

Which network device can be used to eliminate collisions on an Ethernet network?

Switch

Hub

Router

Firewall

Router

Which network device can serve as a boundary to divide a Layer 2 broadcast domain?

Router

Ethernet bridge

Ethernet hub

Access point

The number of available ports

What does the term "port density" represent for an Ethernet switch?

The number of available ports

The number of hosts that are connected to each switch port

The memory space that is allocated to each switch port

The speed of each port

Frames are forwarded without any error checking.

Which characteristic describes cut-through switching?

Error-free fragments are forwarded, so switching occurs with lower latency.

Only outgoing frames are checked for errors.

Frames are forwarded without any error checking.

Buffering is used to support different Ethernet speeds.

Frame buffering

Which switch characteristic helps alleviate network congestion when a 10 Gbps port is forwarding data to a 1 Gbps port?

Fast internal switching

Frame buffering

Fast port speed

High port density

Determines which interface is used to forward a frame based on the destination MAC address

What is one function of a Layer 2 switch?

Forwards data based on logical addressing

Determines which interface is used to forward a frame based on the destination MAC address

Learns the port assigned to a host by examining the destination MAC address

Duplicates the electrical signal of each frame to every port

Forward the frame out all ports except for the port where the frame is received.

What will a Cisco LAN switch do if it receives an incoming frame and the destination MAC address is not listed in the MAC address table?

Drop the frame.

Send the frame to the default gateway.

Forward the frame out all ports except for the port where the frame is received.

Use ARP to resolve the port that is related to the frame.

A hub extends a collision domain, and a switch divides collision domains.

What is the significant difference between a hub and a Layer 2 LAN switch?

A hub forwards frames, and a switch forwards only packets.

A hub extends a collision domain, and a switch divides collision domains.

Each port of a hub is a collision domain, and each port of a switch is a broadcast domain.

A hub divides collision domains, and a switch divides broadcast domains.

Frame forwarding decisions are based on MAC address and port mappings in the CAM table.

Which statement is correct about Ethernet switch frame forwarding decisions?

Only frames with a broadcast destination address are forwarded out all active switch ports.

Frame forwarding decisions are based on MAC address and port mappings in the CAM table.

Unicast frames are always forwarded regardless of the destination MAC address.

Cut-through frame forwarding ensures that invalid frames are always dropped.

They store frames received, thus preventing premature frame discarding when network congestion occurs.

How do switch buffers affect network performance?

They hold data temporarily when a collision occurs until normal data transmission resumes.

They store frames received, thus preventing premature frame discarding when network congestion occurs.

They provide extra memory for a particular port if autonegotiation of speed or duplex fails.

They provide error checking on the data received.

High port density

Which switch characteristic helps keep traffic local and alleviates network congestion?

Fast internal switching

Large frame buffers

High port density

Fast port speed

ASIC

Which switch component reduces the amount of packet handling time inside the switch?

Dual processors

Store-and-forward RAM

ASIC

Large buffer size

* First the switch adds the source mac address to the mac address table

* Then since the destination address is not in the table, the switch sends out the frame on all ports except on the one it was received on.

Refer to the exhibit. A switch receives a Layer 2 frame that contains a source MAC address of 000b.a023.c501 and a destination MAC address of 0050.0fae.75aa. Place the switch steps in the order they occur. (Not all options are used.)

The switch adds the source MAC address to the MAC address table.

Because the destination is not known, the switch forwards the frame out all ports except the port through which the frame arrived.

The switch adds the destination MAC address to the MAC address table.

Because the source MAC address is not known, the switch broadcasts the frame out all ports except the port through which the frame arrived.

The switch drops the frame.

Source MAC address and incoming port number

What information is added to the switch table from incoming frames?

Destination MAC address and incoming port number

Source IP address and incoming port number

Source MAC address and incoming port number

Destination IP address and incoming port number

Dynamic Auto | Passively waits for the neighbor to initiate trunking

Nonegotiate | Requires manual configuration of trunking or non trunking

Dynamic Desirable | Actively attempts to convert the link to a trunk

Trunk | Permanent trunking mode

Match the DTP mode with its function. (Not all options are used.)

A) Dynamic Auto

B) Nonegotiate

C) Dynamic Desirable

D) Trunk

1) Passively waits for the neighbor to initiate trunking

2) Requires manual configuration of trunking or non-trunking

3) Actively attempts to convert the link to a trunk

4) Permanent trunking mode

5) Permanent non-trunking mode

Trunk

Refer to the exhibit. In what switch mode should port G0/1 be assigned if Cisco best practices are being used?

Auto

Native

Access

Trunk

Voice VLAN

What type of VLAN is designed to reserve bandwidth to ensure IP Phone quality?

Management VLAN

Security VLAN

Trunk VLAN

Voice VLAN

Interface G0/2 is not configured as a trunk.

Refer to the exhibit. PC1 is unable to communicate with server 1. The network administrator issues the show interfaces trunk command to begin troubleshooting. What conclusion can be made based on the output of this command?

VLAN 20 has not been created.

Interface G0/2 is not configured as a trunk.

The DTP mode is incorrectly set to dynamic auto on interface G0/1.

The encapsulation on interface G0/1 is incorrect.

Default VLAN

What type of VLAN is initially the management VLAN?

Management VLAN

Data VLAN

Native VLAN

Default VLAN

Show interfaces Fa0/1 switchport

Which command displays the encapsulation type, the voice VLAN ID, and the access mode VLAN for the Fa0/1 interface?

Show mac address-table interface Fa0/1

Show vlan brief

Show interfaces Fa0/1 switchport

Show interfaces trunk

Voice VLAN

What type of VLAN is designed to have a delay of less than 150 ms across the network?

Security VLAN

Desirable VLAN

Trunk VLAN

Voice VLAN

The command used to assign the voice VLAN to the switch port is incorrect.

Refer to the exhibit. A technician is programming switch SW3 to manage voice and data traffic through port Fa0/20. What, if anything, is wrong with the configuration?

There is nothing wrong with the configuration.

The mls qos trust cos command should reference VLAN 35.

The command used to assign the voice VLAN to the switch port is incorrect.

Interface Fa0/20 can only have one VLAN assigned.

They are configured as trunk interfaces.

Refer to the exhibit. A network administrator is reviewing port and VLAN assignments on switch S2 and notices that interfaces Gi0/1 and Gi0/2 are not included in the output. Why would the interfaces be missing from the output?

They are configured as trunk interfaces.

They are administratively shut down.

There is no media connected to the interfaces.

There is a native VLAN mismatch between the switches.

On links that should not be trunking

Under which occasion should an administrator disable DTP while managing a local area network?

On links that should dynamically attempt trunking

When a neighbor switch uses a DTP mode of dynamic auto

When a neighbor switch uses a DTP mode of dynamic desirable

On links that should not be trunking

Allow VLAN 20 on the trunk link.

Refer to the exhibit. All workstations are configured correctly in VLAN 20. Workstations that are connected to switch SW1 are not able to send traffic to workstations on SW2. What could be done to remedy the problem?

Allow VLAN 20 on the trunk link.

Configure all workstations on SW2 to be part of the native VLAN.

Configure all workstations on SW1 to be part of the default VLAN.

Enable DTP on both ends of the trunk.

The ports stop communicating with the attached devices.

What happens to switch ports after the VLAN to which they are assigned is deleted?

The ports are assigned to VLAN1, the default VLAN.

The ports are placed in trunk mode.

The ports are disabled.

The ports stop communicating with the attached devices.

Native VLAN

What type of VLAN supports untagged traffic?

Security VLAN

Native VLAN

Management VLAN

Voice VLAN

Configure the interface as an IEEE 802.1Q trunk.

Which step is NOT needed to configure a voice VLAN on a switch port?

Add a voice VLAN.

Configure the switch port in access mode.

Configure the interface as an IEEE 802.1Q trunk.

Ensure that voice traffic is trusted and tagged with a CoS priority value.

Assign the voice VLAN to the switch port.

Switch(config)# no vlan 100

On a switch that is configured with multiple VLANs, which command will remove only VLAN 100 from the switch?

Switch(config-if)# no switchport access vlan 100

Switch(config)# no vlan 100

Switch# delete flash:vlan.dat

Switch(config-if)# no switchport trunk allowed vlan 100

Port Fa0/11 will be returned to VLAN 1.

Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?

Port Fa0/11 will be shutdown.

Port Fa0/11 will be returned to VLAN 1.

An error message would be displayed.

VLAN 30 will be deleted.

Data VLAN

What type of VLAN is used to separate the network into groups of users or devices?

Management VLAN

Data VLAN

Native VLAN

Voice VLAN

Data VLAN

What type of VLAN should not carry voice and network management traffic?

Voice VLAN

Management VLAN

Security VLAN

Data VLAN

The native VLAN traffic will be untagged across the trunk link.

Which characteristic describes the native VLAN?

This VLAN is necessary for remote management of a switch.

The native VLAN traffic will be untagged across the trunk link.

Designed to carry traffic that is generated by users, this type of VLAN is also known as the default VLAN.

High priority traffic, such as voice traffic, uses the native VLAN.

User Priority | A value that supports level or service implementation.

Type | A value for the tag protocol ID value

Canonical Format Identifier | Enables Token Ring frames to be carried across Ethernet links.

VLAN ID | A Vlan number

Match the IEEE 802.1Q standard VLAN tag field with the description. (Not all options are used.)

A) User Priority

B) Type

C) Canonical Format Identifier

D) VLAN ID

1) A value that supports level or service implementation

2) A value for the tag protocol ID value

3) Enables Token Ring frames to be carried across Ethernet links

4) A VLAN number

5) A value for the application protocol of the user data in the frame

The encapsulation dot1Q 5 command contains the wrong VLAN.

Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem?

The no shutdown command is not entered on subinterfaces.

Gi0/0 is not configured as a trunk port.

The encapsulation dot1Q 5 command contains the wrong VLAN.

The command interface GigabitEthernet0/0.5 was entered incorrectly.

There is no IP address configured on the interface Gi0/0.

Check the physical layer to resolve any issues where a cable might be connected to the wrong port.

What is the first step in troubleshooting Inter-VLAN routing?

Check for missing VLANs

Check the physical layer to resolve any issues where a cable might be connected to the wrong port.

Check for router configuration issues

Check for switch trunk port issues

A switch with a port that is configured as a trunk is needed when connecting to the router.

A high school uses VLAN15 for the laboratory network and VLAN30 for the faculty network. What is required to enable communication between these two VLANs while using the router-on-a-stick approach?

A switch with a port that is configured as a trunk is needed when connecting to the router.

Two groups of switches are needed, each with ports that are configured for one VLAN.

A router with at least two LAN interfaces is needed.

A multilayer switch is needed.

IP addresses on the subinterfaces are incorrectly matched to the VLANs.

Refer to the exhibit. A network administrator is configuring RT1 for inter-VLAN routing. The switch is configured correctly and is functional. Host1, Host2, and Host3 cannot communicate with each other. Based on the router configuration, what is causing the problem?

Each subinterface of Fa0/0 needs separate no shutdown commands.

Routers do not support 802.1Q encapsulation on subinterfaces.

IP addresses on the subinterfaces are incorrectly matched to the VLANs.

Interface Fa0/0 is missing IP address configuration information.

There is an incorrect IP address configured on GigabitEthernet 0/0.30.

Refer to the exhibit. A router-on-a-stick configuration was implemented for VLANs 15, 30, and 45, according to the show running-config command output. PCs on VLAN 45 that are using the 172.16.45.0 /24 network are having trouble connecting to PCs on VLAN 30 in the 172.16.30.0 /24 network. Which error is most likely causing this problem?​

The GigabitEthernet 0/0 interface is missing an IP address.

The wrong VLAN has been configured on GigabitEthernet 0/0.45.

The command no shutdown is missing on GigabitEthernet 0/0.30.

There is an incorrect IP address configured on GigabitEthernet 0/0.30.

No shutdown

Refer to the exhibit. A network administrator has configured R1 as shown. When the administrator checks the status of the serial interface, the interface is shown as being administratively down. What additional command must be entered on the serial interface of R1 to bring the interface up?

No shutdown

End

Clockrate 128000

IPv6 enable

Native

Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port?

Management

Default

Native

Data

It is not assigned to a VLAN.

What is a characteristic of a routed port on a Layer 3 switch?

It is not assigned to a VLAN.

It is commonly used as a WAN link.

It cannot have an IP address assigned to it.

It supports trunking.

Multiple subinterfaces may impact the traffic flow speed.

When routing a large number of VLANs, what is a disadvantage of using the router-on-a-stick inter-VLAN routing method rather than the multilayer switch inter-VLAN routing method?

Router-on-a-stick requires multiple physical interfaces on a router.

Router-on-a-stick requires subinterfaces to be configured on the same subnets.

Multiple subinterfaces may impact the traffic flow speed.

Multiple SVIs are needed.

Trunk port

Refer to the exhibit. A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What type of port will be required on a switch that is connected to Gi0/0 on router CiscoVille to allow inter-VLAN routing?

Trunk port

Access port

Routed port

SVI

Switching packets is faster with SVI.

Which statement is correct with respect to SVI inter-VLAN routing?

SVIs eliminate the need for a default gateway in the hosts.

SVIs can be bundled into EtherChannels.

Switching packets is faster with SVI.

Virtual interfaces support subinterfaces.

Switchport mode trunk

Refer to the exhibit. A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What command will be required on a switch that is connected to the Gi0/0 interface on router CiscoVille to allow inter-VLAN routing?​

Switchport mode dynamic desirable

Switchport mode access

Switchport mode trunk

No switchport

Gi1/1 is configured as trunk mode.

Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PCs on different VLANs cannot communicate. Based on the output, what is one configuration errors on switch interface Gi1/1?

Negotiation of trunking is turned on on Gi1/1.

The trunking encapsulation protocol is configured wrong.

Voice VLAN is not assigned to Gi1/1.

Gi1/1 is configured as trunk mode.

It identifies the VLAN number.

Refer to the exhibit. A network administrator is configuring inter-VLAN routing on a network. For now, only one VLAN is being used, but more will be added soon. What is the missing parameter that is shown as the highlighted question mark in the graphic?

It identifies the subinterface.

It identifies the native VLAN number.

It identifies the VLAN number.

It identifies the type of encapsulation that is used.

It identifies the number of hosts that are allowed on the interface.

A high port density switch

Which solution would help a college alleviate network congestion due to collisions?

A router with three Ethernet ports

A router with two Ethernet ports

A firewall that connects to two Internet providers

A high port density switch

The encapsulation dot1Q 20 command has not been configured.​

Refer to the exhibit. What is the cause of the error that is displayed in the configuration of inter-VLAN routing on router CiscoVille?

The gig0/0 interface does not support inter-VLAN routing.

The encapsulation dot1Q 20 command has not been configured.​

The IP address on CiscoVille is incorrect.

The no shutdown command has not been configured.

The VLAN assignment and membership for all switch ports

A network administrator issues the show vlan brief command while troubleshooting a user support ticket. What output will be displayed?

The VLAN assignment and trunking encapsulation

The VLAN assignment and membership for all switch ports

The VLAN assignment and native VLAN

The VLAN assignment and membership for device MAC addresses

4

Refer to the exhibit. A network administrator needs to configure router-on-a-stick for the networks that are shown. How many subinterfaces will have to be created on the router if each VLAN that is shown is to be routed and each VLAN has its own subinterface?

5

4

3

2

1

Layer 2 switch using SVI

Which of the following is NOT an inter-VLAN routing option?

Legacy

Layer 2 switch using SVI

Layer 3 switch using SVI

Router-on-a-Stick

Modify the transport input command.

Refer to the exhibit. The network administrator wants to configure Switch1 to allow SSH connections and prohibit Telnet connections. How should the network administrator change the displayed configuration to satisfy the requirement?

Modify the transport input command.

Configure SSH on a different line.

Reconfigure the RSA key.

Use SSH version 1.

STP | The legacy standard for STP that runs all VLANs in a single spanning-tree instance

MSTP | A protocol that allows muliple VLANs to run in a single spanning tree instance

RSTP | An evolution of STP that provides faster convergence

Match the STP protocol with the correct description. (Not all options are used.)

A) STP

B) MSTP

C) RSTP

1) The legacy standard for STP that runs all VLANs in a single spanning-tree instance

2) A protocol that allows multiple VLANs to run in a single spanning-tree instance

3) A Cisco enhancement of RSTP to provide a spanning-tree instance for each VLAN

4) An evolution of STP that provides faster convergence

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

What is the outcome of a Layer 2 broadcast storm?

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.

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

Port ID

Which is NOT a component combined to form a bridge ID?

Port ID

MAC address

Extended system ID

Bridge priority

The path cost

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

The lowest MAC address of all the ports in the switch

The VTP revision number

The path cost

The highest MAC address of all the ports in the switch

The MAC address table becomes unstable.

What is a drawback to turning spanning tree off and having multiple paths through the Layer 2 switch network?

Port security becomes unstable.

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

The MAC address table becomes unstable.

The switch acts like a hub.

Learning

In which PVST+ port state is MAC addresses learned?

Learning

Disabled

Blocking

Listening

28672

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?

1

61440

28672

34816

32768

Prevents Layer 2 loops

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

Allows Cisco devices to exchange routing table updates

Creates smaller collision domains

Prevents Layer 2 loops

Prevents routing loops on a router

Creates smaller broadcast domains

61440

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?

61440

4096

32768

65535

Cisco Implementation of IEEE 802.1D | PSVT+

Fast converging enhancement of IEEE 802.1D | RSTP

IEEE standard that reduces the number of STP instances | MSTP

Proprietary per VLAN implementation of IEEE 802.1w | RA

Match the spanning-tree feature with the protocol type. (Not all options are used.)

A) Cisco implementation of IEEE 802.1D

B) Fast converging enhancement of IEEE 802.1D

C) IEEE standard that reduces the number of STP instances

D) Proprietary per VLAN implementation of IEEE 802.1w

1) PVST+

2) RSTP

3) MSTP

4) Rapid PVST+

5) MST

Lowest MAC address

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

Removing single points of failure with multiple Layer 2 switches

Which network design feature require Spanning Tree Protocol (STP) to ensure correct network operation?

Removing single points of failure with multiple Layer 2 switches

Link-state dynamic routing that provides redundant routes

Implementing VLANs to contain broadcasts

Static default routes

It is enabled by default on Cisco switches.

What is a characteristic of spanning tree?

It is enabled by default on Cisco switches.

It prevents propagation of Layer 2 broadcast frames.

It has a TTL mechanism that works at Layer 2.

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

MST

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?

STP

Rapid PVST+

PVST+

MST

Designated

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

Disabled

Alternate

Designated

Blocked

Root port

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

Disabled port

Designated port

Non-designated port

Root port

S2

Refer to the exhibit. Which switch will be the root bridge after the election process is complete?

S3

S2

S1

S4

Alternate, designated, root, root

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

Alternate, root, designated, root

Designated, root, alternate, root

Alternate, designated, root, root

Designated, alternate, root, root

It disables redundant paths to eliminate Layer 2 loops.

What is the function of STP in a scalable network?

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.

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

It disables redundant paths to eliminate Layer 2 loops.

802.1D

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

PVST+

802.1D

Rapid PVST

MST

VLAN information

Which parameter must match on the ports of two switches to create a PAgP EtherChannel between the switches?

MAC address

Port ID

PAgP mode

VLAN information

A trunked port can be part of an EtherChannel bundle.

Which statement describes an EtherChannel implementation?

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.

PAgP cannot be used in conjunction with EtherChannel.