Huawei H12-821 Online Practice Questions and Exam Preparation

Huawei H12-821 Online Questions & Answers

• Question 241:

  An enterprise administrator configures route summarization on ASBRs to reduce the number of inter-area Type 3 LSAs, which in turn reduces the routing table size and improves device resource utilization.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 242:

  GRE is a VPN encapsulation technology that is widely used to transmit packets across heterogeneous networks. Which of the following statements is false about GRE?

  A. GRE supports encryption and authentication.
  B. GRE supports multicast transmission.
  C. GRE is a Layer 3 VPN encapsulation technology.
  D. GRE can work with other VPN protocols to better ensure data security.
  A. GRE supports encryption and authentication.

• Question 243:

  BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?

  A. 4784
  B. 3784
  C. 5784
  D. 2784
  A. 4784

• Question 244:

  A Layer 2 switch supports multiple types of Ethernet interfaces. Similar to a trunk interface, a hybrid interface allows data frames from multiple VLANs to pass through. In addition, you can determine whether data frames from a VLAN sent out from a hybrid interface are tagged or untagged.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 245:

  To prevent loops on an STP network , after a designated port is elected, it must wait for a long time and can forward packets only after the status of all ports on the entire network is determined . To solve this problem, RSTP uses the P/A mechanism to speed up the downstream port's transition to the Forwarding state .

  A. TRUE
  B. FALSE
  A. TRUE

• Question 246:

  CORRECT TEXT

  R1, R2, R3, and R4 run IS-IS, and the DIS priorities of their interfaces are shown in the following figure. If all these devices are started simultaneously, will be elected as the DIS. (Enter the device name, for example, R1.)

  

  R4

• Question 247:

  Route attributes are specific descriptions of routes. BGP route attributes can be classified into four types. Which of the following are well-known discretionary attributes?

  A. Atomic_Aggregate
  B. Local-Preference
  C. Community
  D. MED
  A. Atomic_Aggregate
  B. Local-Preference

• Question 248:

  Which of the following scenarios is not suitable for deploying interface PBR?

  A. A core switch needs to forward traffic between the intranet and extranet to an AC device that connects to the core switch in off-path mode.
  B. A core switch needs to forward the traffic between the intranet and extranet to a security detection device that connects to the core switch in off-path mode.
  C. A device needs to modify the next-hop IP address for locally originated traffic.
  D. On an enterprise network with multiple ISP outbound interfaces, each internal network segment accesses the Internet through a particular ISP outbound interface.
  C. A device needs to modify the next-hop IP address for locally originated traffic.

• Question 249:

  Without a prior version check, an engineer configures IGMP snooping on a device and the version of IGMP snooping is earlier than the IGMP versions on user hosts. In this case, which of the following situations will occur?

  A. Users cannot receive multicast data because the device forwards received IGMP Report messages only to router ports and does not generate group member ports or forwarding entries.
  B. Users cannot receive multicast data, but the device generates forwarding entries after receiving IGMP Report messages.
  C. The IGMP snooping version of the device is automatically degraded, and users can receive multicast data properly.
  D. The IGMP versions of the hosts are automatically upgraded, and users can receive multicast data properly.
  A. Users cannot receive multicast data because the device forwards received IGMP Report messages only to router ports and does not generate group member ports or forwarding entries.

• Question 250:

  NETCONF is a network configuration protocol that automates network configuration in a programmable manner, simplifying and accelerating network service deployment. Which of the following operations can be performed by using this protocol?

  A. Modifying configurations
  B. Deleting configurations
  C. Restoring configurations
  D. Backing up configurations
  A. Modifying configurations
  B. Deleting configurations
  C. Restoring configurations
  D. Backing up configurations