Huawei Huawei Certifications H12-811 Questions & Answers

• Question 761:

  An AC is a unified management and control device in the AC + Fit AP architecture. Which of the following functions is not supported by the AC?

  A. User access control

  B. AP configuration delivery

  C. User access authentication

  D. User data packet forwarding regardless of the data forwarding mode

  Correct Answer: D

  Fit APs implement wireless radio access, including radio signal transmission and detection response, data encryption and decryption, and data transmission acknowledgment. https://support.huawei.com/enterprise/en/doc/EDOC1100156624/f342dc7/wlan-architecture

• Question 762:

  In a broadcast address, all host bits are set to 1 and a broadcast address can be used as a host address.

  A. True

  B. False

  Correct Answer: B

• Question 763:

  Which of the following IEEE 802.11 standards supports the 2.4 GHz frequency band only?

  A. 802.11a

  B. 802.11g

  C. 802.11n

  D. 802.11ax

  Correct Answer: B

• Question 764:

  The network Management Station uses SNMP to manage devices, which SNMP message is sent when an SNMP registered abnormal event occurs?

  A. get-response

  B. set-request

  C. trap

  D. get-request

  Correct Answer: C

• Question 765:

  The controller is the core component of SDN and connects to devices through southbound interfaces. Which of the following are southbound protocols used by the controller? (Choose two.)

  A. OpenFlow

  B. NETCONF

  C. SNMP

  D. PCEP

  Correct Answer: AC

• Question 766:

  When both ends running PPP protocol detect that the physical link is active, the link state will transit from dead to establish. Which of the following protocols is used to negotiate the link parameters during this phase?

  A. IP

  B. DHCP

  C. LCP

  D. NCP

  Correct Answer: C

• Question 767:

  Which of the following application-layer protocols are based on TCP?

  A. Ping

  B. TFTP

  C. FTP

  D. HTTP packet

  Correct Answer: C

• Question 768:

  Which of the following is not an open API of Huawei controllers?

  A. RESTful

  B. NETCONF

  C. AAA

  D. OpenFlow

  Correct Answer: C

  AAA (Authentication, Authorization and Accounting). AAA is not an open API of Huawei controllers. RESTful, NETCONF and OpenFlow are all open APIs supported by Huawei controllers.

• Question 769:

  Which of the following fields are included in an MPLS header? (Choose three.)

  A. Label

  B. Tos

  C. EXP

  D. TTL

  Correct Answer: ACD

  Here is a table representation of an MPLS header:

  field Size (bits) Description

  Label 20 Used to identify the Forwarding Equivalence Class (FEC) for the packet.

  EXP 3 Experimental bits used for Quality of Service (QoS).

  S 1 Bottom of Stack bit. Set to 1 for the last label in the label stack.

  TTL 8 Time to Live. Decremented at each hop and used to prevent routing loops.

• Question 770:

  Which of the following statements regarding the router ID in OSPF are incorrect?

  A. The router IDs of OSPF routers in the same area must be the same, but can be different in different areas.

  B. The router ID must be the IP address of an OSPF router interface.

  C. The router ID must be configured manually.

  D. A router running OSPF must have a router ID for it to operate properly.

  Correct Answer: D

  OSPF Router ID can be selected based on Lower IP Address on the router.