Huawei Routing & Switching H12-261 Questions & Answers

• Question 21:

  In traffic policing, dual buckets at dual rates are used. The number of tokens in bucket C is TC, and the number of tokens in bucket P is TP. When a packet with a length of B is received, which of the following statements are true?

  A. If (TP-B) and (TC-B) are larger than 0, the packet is marked green

  B. If (TP-B) is larger than 0 and (TC-B) is smaller than 0, the packet is marked yellow

  C. If (TP-B) is larger than 0 and (TC-B) is smaller than 0, the packet is marked green

  D. If (TP-B) and (TC-B) are smaller than 0, the packet is marked red

  Correct Answer: ABD

  Reference: https://support.huawei.com/enterprise/en/doc/EDOC1100055046/33f24bb0/token-bucket

• Question 22:

  IPSG static binding entries can be configured, or they can be generated when IPSG and DHCP Snooping are used together.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 23:

  As shown in the figure, Department A of Branch 1 can access the Internet, and Department B can access headquarters resources only through the encrypted VPN. You can configure a NAT policy on the egress device in Branch 1 to allow Department A to still access the Internet, and configure an IPsec VPN (ESP protocol) in tunnel mode for Department B to allow Department B to access the headquarters.

  

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 24:

  Which MAC address corresponds to the multicast IP address 229.130.130.1?

  A. 01-00-5E-82-82-01

  B. 00-00-5E-02-82-01

  C. 01-00-5E-02-82-01

  D. 00-00-5E-82-82-01

  Correct Answer: A

• Question 25:

  Which of the following statements regarding the Register message on a PIM-SM network are true?

  A. The Register message is sent from a source DR

  B. The Register message is sent to the RP in unicast mode

  C. The Register message is sent from a receiver DR

  D. The RP learns multicast source information from the Register message

  Correct Answer: BD

• Question 26:

  If a multicast group has multiple receivers and the administrator enables the IGMP snooping function on the switch connected to the receivers, how do the receivers respond after receiving General Query messages from the querier?

  A. Only the receiver whose response timer expires firstly sends a Report message

  B. All receivers send Report messages

  C. All receivers send Report messages only when IGMPv1 is run

  D. All receivers send Report messages only when IGMPv2 is run

  Correct Answer: A

• Question 27:

  Which of the following technologies can be used to improve the MPLS BGP VPN reliability?

  A. VPN GR

  B. FRR for private IP routes between Pes and CEs

  C. VPN FRR

  D. CE dual-homing networking at the access layer

  Correct Answer: ACD

• Question 28:

  Typically, users within a VPN only communicate with other users in the same VPN. They cannot communicate with users on the Internet or access the Internet. Many VPN sites, however, may need to access the Internet. Which of the following statements regarding interconnection between the VPN and the Internet are true?

  A. The interconnection between the VPN and the Internet can be implemented on the PE. However, the implementation is complex and may bring security risks. The PE is vulnerable to DoS attacks from the Internet.

  B. Directly connect the CE to the Internet on the user side. Each user site can independently access the Internet. That is, a default route destined for the Internet is configured on the CE of each site.

  C. Configure the PE to send a default route destined for the Internet to the CE, and add a default route destined for the Internet gateway to the VPN instance routing table.

  D. Isolating public network routes and VPN routes on the user side is simple, secure, and reliable.

  Correct Answer: ACD

• Question 29:

  Which of the following AS-paths can be matched by the AS-Path filter configured using the ip as- path-filter 1 permit ^12.*74$ command?

  A. AS_Path (32 1274 23)

  B. AS_Path (125 328 74 23)

  C. AS_Path (123 621 743 2374)

  D. AS_Path (321 12 2374)

  Correct Answer: C

• Question 30:

  To reduce the amount of OSPF data and routing information in some areas, OSPF has special area types. Which of the following statements regarding OSPF special areas is true?

  A. The ASBR-summary-LSA can be advertised to an NSSA

  B. The AS-external-LSA can be advertised to a stub area

  C. Any OSPF area can be configured as a special area

  D. A router in a special area cannot establish an OSPF neighbor relationship with a router in a common area

  Correct Answer: C