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As shown in the figure, when the link between SWC and LAND is faulty, through which path are TCA BPDUs sent?
What is the default priority of the device in a VRRP group?
Which statements about MUX VLAN are true? (Choose two.)
Which interface is connected to the user-side interface?
Configuring a firewall to work in transparent mode does not change the network topology.
According to OSI reference model, Layer 2 LAN switch operates at ( ).
Which of the following statements regarding the transit node in the MPLS forwarding process is correct?
Dividing a network using VLANs can (). (Choose two.)
If the customer requires high mobility and easy management, the staff of different departments can be added to different VLANs. In addition, these VLANs are located on different IP subnets. Which VLAN allocation mode can meet these requirements?
On the RSTP network with STP devices, which packets does an RSTP switch use to notify the STP switches of the topology change?

Question 81

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The Layer 2 packet header in EAPoL packets is | DMAC | SMAC | TYPE | EAPOL | FCS |.

Which statements are true? (Choose three.)

A.
The destination address of packets is a specified MAC address.
A.
The destination address of packets is a specified MAC address.
Answers
B.
The destination address of packets is a unicast MAC address.
B.
The destination address of packets is a unicast MAC address.
Answers
C.
EAPoL packets cannot be forwarded by switches.
C.
EAPoL packets cannot be forwarded by switches.
Answers
D.
The source MAC address of packets is the MAC address of the interface that sends packets.
D.
The source MAC address of packets is the MAC address of the interface that sends packets.
Answers
Suggested answer: A, C, D

Question 82

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Which statements about the MUX VLAN configuration are true? (Choose two.)

A.
VLAN 10 is the principal VLAN
A.
VLAN 10 is the principal VLAN
Answers
B.
VLAN 11 is the principal VLAN
B.
VLAN 11 is the principal VLAN
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C.
VLAN 12 is the subordinate separate VLAN
C.
VLAN 12 is the subordinate separate VLAN
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Suggested answer: A, C

Question 83

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On the MSTP network as shown in the figure, what is the role of the switch in MSTID according to the configuration?

A.
Root switch
A.
Root switch
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B.
Slave switch
B.
Slave switch
Answers
C.
Non-root switch
C.
Non-root switch
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D.
None of the above
D.
None of the above
Answers
Suggested answer: A

Question 84

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Which of the following statements about RSTP and STP is true?

A.
STP has more port states than RSTP.
A.
STP has more port states than RSTP.
Answers
B.
The port roles used in RSTP is less than the port roles used in STP.
B.
The port roles used in RSTP is less than the port roles used in STP.
Answers
C.
Since RSTP adopts fast convergence mechanism, it does not have Learning state which is available in STP.
C.
Since RSTP adopts fast convergence mechanism, it does not have Learning state which is available in STP.
Answers
D.
Same as STP, the ports will enter into Listening state once the RSTP has been enabled. Then, the ports can receive BPDU and calculate the spanning tree.
D.
Same as STP, the ports will enter into Listening state once the RSTP has been enabled. Then, the ports can receive BPDU and calculate the spanning tree.
Answers
Suggested answer: A

Question 85

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A.
True
A.
True
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B.
False
B.
False
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Suggested answer: A

Question 86

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Which statements about VLAN configuration are true? (Choose two.)

A.
You can enter the VLAN view at the same time you create a VLAN.
A.
You can enter the VLAN view at the same time you create a VLAN.
Answers
B.
If you run undo vlan, the VLAN is invalid, but still exists. You do not need to create the VLAN when you use it next time.
B.
If you run undo vlan, the VLAN is invalid, but still exists. You do not need to create the VLAN when you use it next time.
Answers
C.
You can configure a character string of VLAN description. The length of the character string is not limited.
C.
You can configure a character string of VLAN description. The length of the character string is not limited.
Answers
D.
If you do not enter the VLAN ID when running the display vlan command, information about all VLANs will be displayed.
D.
If you do not enter the VLAN ID when running the display vlan command, information about all VLANs will be displayed.
Answers
Suggested answer: A, D

Question 87

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Which of the following statements is not the advantage of STP?

A.
STP can manage the redundant links. When the working link is down, network connectivity can be restored.
A.
STP can manage the redundant links. When the working link is down, network connectivity can be restored.
Answers
B.
STP can prevent loops
B.
STP can prevent loops
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C.
STP can prevent broadcast storm
C.
STP can prevent broadcast storm
Answers
D.
STP can save network bandwidth
D.
STP can save network bandwidth
Answers
Suggested answer: D

Question 88

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RSTP adopts fast convergence mechanism. So, there is no Forward Delay interval in RSTP.

A.
True
A.
True
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B.
False
B.
False
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Suggested answer: B

Question 89

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On an STP network, after the network topology changes, which BPDUs are sent during flooding of topology change information on the entire network?

A.
BPDUs with the TCN flag
A.
BPDUs with the TCN flag
Answers
B.
BPDUs with the TCA flag
B.
BPDUs with the TCA flag
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C.
BPDUs with the TC flag
C.
BPDUs with the TC flag
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D.
All of the above
D.
All of the above
Answers
Suggested answer: D

Question 90

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According to OSI reference model, Layer 2 LAN switch operates at ( ).

A.
Physical layer
A.
Physical layer
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B.
Data link layer
B.
Data link layer
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C.
IP layer
C.
IP layer
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D.
Application layer
D.
Application layer
Answers
Suggested answer: B
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