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Huawei H12-261 Practice Test - Questions Answers, Page 11

Question list

List of questions

Question 101

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Which of the following statements regarding the inter-AS MPLS VPN are false?

Question 102

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Which of the following statements regarding LDP reliability is false?

Question 103

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The display mpls lsp command is run on a router to check LSP information. The command output is as follows: Which of the following statements is true?

Question 104

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If PIM-SM is enabled on a multicast network, only after multicast tress are established between the multicast source and receivers, the receiver can receive multicast data. Which of the following st

Question 105

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SSM is enabled on the entire IP multicast network. Which of the following statements regarding SSM are true?

Question 106

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What advantages does IGMPv2 have over IGMPv1?

Question 107

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Which of the following operations can implement fast fault detection on a multicast network?

Question 108

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Which of the following attacks are DoS (Denial of service) attacks?

Question 109

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A Local Area Network Denial (LAND) attacker sends a SYN packet in which the source and destination addresses are the same as the target host's address and the source port is the same as the destinat

Question 110

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Which of the following is not included in a digital certificate?

Question 101

Which of the following statements regarding the inter-AS MPLS VPN are false?

In inter-AS VPN Option B mode, an MP-EBGP peer relationship needs to be established between two ASBRS.

In inter-AS VPN Option B mode, two ASBR-Pes are interconnected through multiple interfaces (including sub-interfaces), each interface is associated with one VPN, and each ASBR-PE considers the remote device as a CE.

In inter-AS VPN Option A mode, the routes advertised between two ASBRs are common IPv4 routes.

In inter-AS VPN Option C solution 2, if only LDP is used to advertise public network labels, three labels need to be used during packet forwarding.

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Question 102

Which of the following statements regarding LDP reliability is false?

By default, the policy for manually configuring LDP FRR specifies that backup routes with 32-bit addresses should trigger the setup of a backup LDP LSP.

Synchronization between LDP and IGP requires suppression of IGP route advertisement to achieve consistent LDP and IGP.

LDP FRR can generate an LSP as the backup of the primary LSP based on Label Mapping messages that are not from the optimal next hop. LDP FRR establishes forwarding entries for the backup LSP.

LDP Graceful Restart (GR) leverages the separation of the forwarding plane and control plane by MPLS to ensure uninterrupted traffic transmission during a protocol restart or active/standby switchover.

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Question 103

The display mpls lsp command is run on a router to check LSP information. The command output is as follows:

Which of the following statements is true?

When sending a data packet with the destination IP address 4.4.4.4, the router sends it directly without any label added.

After receiving a data packet with label 1024, the router changes the label to label 1027 and then sends the packet.

When sending a data packet with the destination IP address 2.2.2.2, the router sends it directly without any label added.

When sending a data packet with the destination IP address 3.3.3.3, the router adds label 1026 to the packet before sending it.

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Question 104

If PIM-SM is enabled on a multicast network, only after multicast tress are established between the multicast source and receivers, the receiver can receive multicast data. Which of the following statements regarding the trees are true?

An RPT is established between the RP and receivers.

An SPT is established between the RP and receivers.

An SPT is established between the multicast source and RP.

An RPT is established between the multicast source and RP.

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Question 105

SSM is enabled on the entire IP multicast network. Which of the following statements regarding SSM are true?

No RP is required.

Only the RTP is used for SSM.

SSM is recommended when multiple sources are available on the network and the multicast route is simple.

SSM is applicable to one-to-many applications.

Only the SPT is used for SSM.

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Question 106

What advantages does IGMPv2 have over IGMPv1?

The Source-Specific Query message is added.

The Group-Specific Query message is added.

The Leave message is added.

The maximum response time field is added.

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Question 107

Which of the following operations can implement fast fault detection on a multicast network?

Shorten the holdtime of Join or Prune messages.

Shorten the interval for sending Join or Prune messages.

Shorten the interval of PIM Hello messages.

Set up BFD for PM sessions between PIM SM neighbors.

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Question 108

Which of the following attacks are DoS (Denial of service) attacks?

Single-packet attacks

Flood attacks

Man-in-the-middle attacks

Source IP address spoofing attacks.

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Question 109

A Local Area Network Denial (LAND) attacker sends a SYN packet in which the source and destination addresses are the same as the target host's address and the source port is the same as the destination port. While the receiver waits for the final ACK packet from the sender, the connection is in half-connected mode, which wastes limited TCP resources at the receive end.

TRUE

FALSE

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