Question 1

The only switch on a LAN that has all designated interfaces is the ________ switch.

Accepted Answer

A)   Root
B)   Main
C)   Primary
D)   Forwarding

Question 2

The switch that has the lowest STP cost will become the ________ switch for a specific segment.

Accepted Answer

A)   Root
B)   Designated
C)   Primary
D)   Forwarding B

Question 3

Refer to the figure. Based on the STP port costs shown, which of S3's interfaces will become the root port?

Accepted Answer

A)   1
B)   3
C)   2
D)   None

Question 4

The STP root switch is the switch with the lowest numeric value for the ________.

Accepted Answer

A)   Cost
B)   Primary ID
C)   Router ID
D)   Bridge ID

Question 5

What is the name of the field in the STP hello BPDU that contains the bridge ID of the switch that the sender of the BPDU believes is the root switch?

Accepted Answer

A)   Designated bridge ID
B)   STP primary ID
C)   Root bridge ID
D)   STP core ID

Question 6

In what STP state does a port drop all received user traffic and not transmit user traffic but still listen for updated BPDUs?

Accepted Answer

A)   Dropping
B)   Listening
C)   Blocking
D)   Learning

Question 7

Switch forwarding logic dictates that a switch flood broadcasts out all switchports that are in the same ________, except the switchport in which the frame arrived.

Accepted Answer

A)   Area
B)   Management domain
C)   Process
D)   VLAN

Question 8

What is one way in which STP protects a redundant Ethernet network?

Accepted Answer

A)   Protects against frames looping the Layer 2 domains
B)   Reduces collision domain size
C)   Identifies and deletes invalid MAC to IP address mapping
D)   Makes sure DTP VLANs do not have frame collisions

Question 9

A switch's ________ port is its interface through which it has the least STP cost to reach the root switch.

Accepted Answer

A)   Root
B)   Designated
C)   Forwarding
D)   Learning

Question 10

What default STP timer length is used for both the listening and learning states?

Accepted Answer

A)   5 seconds
B)   20 seconds
C)   15 seconds
D)   2 seconds C

Question 11

The ________ feature enables a switch to transition a switchport from blocking to forwarding state quickly by bypassing the listening and learning states.

Accepted Answer

A)   PortFast
B)   BPDU Guard
C)   FastPass
D)   Host mode

Question 12

What is the default IEEE STP port cost for a 100 Mbps Ethernet interface?

Accepted Answer

A)   10
B)   100
C)   4
D)   19

Question 13

________ combines multiple parallel segments of equal speed between the same pair of switches.

Accepted Answer

A)   LACP
B)   Load balancing
C)   STP
D)   EtherChannel

Question 14

How is a root bridge/switch determined?

Accepted Answer

A)   All the switches in the internetwork send out hello BPDUs, and the switch that has the aggregate least number of hops to all the other switches becomes the root.
B)   All the switches send out hello BPDUs, and the switch with the lowest bridge ID becomes the root.
C)   All the switches send out hello BPDUs, and the switch with the highest bridge ID becomes the root.
D)   The switches send out hello BPDUs, and the switch with the most direct connected switches becomes the root.
E)   The core network switch becomes the root.

Question 15

What is the default IEEE STP port cost for a 10 Gbps Ethernet interface?

Accepted Answer

A)   2
B)   1
C)   4
D)   10

Question 16

Refer to the figure. Based on the STP port costs shown, which of S4's interfaces will become the root port?

Accepted Answer

A)   2
B)   3
C)   1
D)   None B

Question 17

Which are true statements about STP PortFast mode?

Accepted Answer

A)   The port bypasses the normal STP startup process and enters forwarding mode immediately.
B)   Special BPDUs are generated to notify the other switches that the port is an access port and any switches connected to it should cause the port to be disabled.
C)   It should be used on all switch uplink ports to speed convergence in case of a network failure.
D)   It starts the generation of STP TCN BPDU generation in port up/down conditions.

Exam 9: Spanning Tree Protocol Concepts

The only switch on a LAN that has all designated interfaces is the ________ switch.

Correct Answer
verified

The switch that has the lowest STP cost will become the ________ switch for a specific segment.

Correct Answer
verified
B

Refer to the figure. Based on the STP port costs shown, which of S3's interfaces will become the root port?

Correct Answer
verified

The STP root switch is the switch with the lowest numeric value for the ________.

Correct Answer
verified

What is the name of the field in the STP hello BPDU that contains the bridge ID of the switch that the sender of the BPDU believes is the root switch?

Correct Answer
verified

In what STP state does a port drop all received user traffic and not transmit user traffic but still listen for updated BPDUs?

Correct Answer
verified

Switch forwarding logic dictates that a switch flood broadcasts out all switchports that are in the same ________, except the switchport in which the frame arrived.

Correct Answer
verified

What is one way in which STP protects a redundant Ethernet network?

Correct Answer
verified

A switch's ________ port is its interface through which it has the least STP cost to reach the root switch.

Correct Answer
verified

What default STP timer length is used for both the listening and learning states?

Correct Answer
verified
C

The ________ feature enables a switch to transition a switchport from blocking to forwarding state quickly by bypassing the listening and learning states.

Correct Answer
verified

What is the default IEEE STP port cost for a 100 Mbps Ethernet interface?

Correct Answer
verified

________ combines multiple parallel segments of equal speed between the same pair of switches.

Correct Answer
verified

How is a root bridge/switch determined?

Correct Answer
verified

What is the default IEEE STP port cost for a 10 Gbps Ethernet interface?

Correct Answer
verified

Refer to the figure. Based on the STP port costs shown, which of S4's interfaces will become the root port?

Correct Answer
verified
B

Which are true statements about STP PortFast mode?

Correct Answer
verified

Exam 9: Spanning Tree Protocol Concepts

The only switch on a LAN that has all designated interfaces is the ________ switch.

Correct AnswerverifiedShow Answer

The switch that has the lowest STP cost will become the ________ switch for a specific segment.

Correct AnswerverifiedB

Refer to the figure. Based on the STP port costs shown, which of S3's interfaces will become the root port?

Correct AnswerverifiedShow Answer

The STP root switch is the switch with the lowest numeric value for the ________.

Correct AnswerverifiedShow Answer

What is the name of the field in the STP hello BPDU that contains the bridge ID of the switch that the sender of the BPDU believes is the root switch?

Correct AnswerverifiedShow Answer

In what STP state does a port drop all received user traffic and not transmit user traffic but still listen for updated BPDUs?

Correct AnswerverifiedShow Answer

Switch forwarding logic dictates that a switch flood broadcasts out all switchports that are in the same ________, except the switchport in which the frame arrived.

Correct AnswerverifiedShow Answer

What is one way in which STP protects a redundant Ethernet network?

Correct AnswerverifiedShow Answer

A switch's ________ port is its interface through which it has the least STP cost to reach the root switch.

Correct AnswerverifiedShow Answer

What default STP timer length is used for both the listening and learning states?

Correct AnswerverifiedC

The ________ feature enables a switch to transition a switchport from blocking to forwarding state quickly by bypassing the listening and learning states.

Correct AnswerverifiedShow Answer

What is the default IEEE STP port cost for a 100 Mbps Ethernet interface?

Correct AnswerverifiedShow Answer

________ combines multiple parallel segments of equal speed between the same pair of switches.

Correct AnswerverifiedShow Answer

How is a root bridge/switch determined?

Correct AnswerverifiedShow Answer

What is the default IEEE STP port cost for a 10 Gbps Ethernet interface?

Correct AnswerverifiedShow Answer

Refer to the figure. Based on the STP port costs shown, which of S4's interfaces will become the root port?

Correct AnswerverifiedB

Which are true statements about STP PortFast mode?

Correct AnswerverifiedShow Answer

Correct Answer
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B

Correct Answer
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C

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B

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