Huawei H12-222 Online Practice Questions and Exam Preparation

Huawei H12-222 Online Questions & Answers

• Question 241:

  During configuration of the WRED drop profile, the lower drop threshold and upper drop threshold for AF21 traffic are 35 and 40, the lower drop threshold and upper drop threshold for AF22 traffic are 30 and 40, and the lower drop threshold and upper drop threshold for AF23 traffic are 25 and 40. The maximum drop probability for AF21, AF22, and AF23 traffic is 10%. Before congestion occurs, which type of traffic can obtain bandwidth guarantee?

  A. AF21
  B. AF22
  C. AF23
  D. AF21, AF22, and AF23 traffic
  A. AF21

• Question 242:

  The jitter occurs because the E2E delays of data packets in the same flow are different.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 243:

  LDP uses Discovery messages to discover neighbors through different neighbor discovery mechanisms. Which of the following statements regarding basic discovery mechanisms are true? (Multiple Choice)

  A. The destination IP address of the LDP Discovery message is the multicast IP address 224.0.0.2.
  B. The LDP Discovery message is sent to the specified LDP peer.
  C. The LSRdoes not send Hello messages any longer after TCP connections are established.
  D. The LDP Discovery message is encapsulated into a UDP packet and its destination port number is 646.
  A. The destination IP address of the LDP Discovery message is the multicast IP address 224.0.0.2.
  D. The LDP Discovery message is encapsulated into a UDP packet and its destination port number is 646.

• Question 244:

  BFD is a universal fast detection technology that can implement fast switchover, so BFD does not need to be used with other fast switching technologies.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 245:

  MPLS implements data forwarding based on two different planes. Which of the following statements regarding the forwarding mechanism are correct? (Multiple Choice)

  A. After an IP packet enters an MPLS domain, the device receiving the packet queries in the FIB table first.
  B. The system automatically assigns an ID to the upper-layer application that uses a tunnel. This ID is also called the tunnel ID.
  C. If the tunnel ID is 0x0, the MPLS forwarding process starts.
  D. If the tunnel ID is not 0x0, the normal IP forwarding process starts.
  A. After an IP packet enters an MPLS domain, the device receiving the packet queries in the FIB table first.
  B. The system automatically assigns an ID to the upper-layer application that uses a tunnel. This ID is also called the tunnel ID.

• Question 246:

  Man-in-the-middle attacks or IP/MAC Spoofing attacks are common on intranets and will cause information leakage. Which configuration method can prevent these attacks?

  A. Configure the trusted or untrusted interface.
  B. Limit the maximum number of MAC addresses that can be learned on a switch interface.
  C. Configure DHCP snooping to check the CHADDR field carried in a DHCP Request packet.
  D. Configure association between DHCP snooping and IPSG or DAI on the switch.
  A. Configure the trusted or untrusted interface.
  B. Limit the maximum number of MAC addresses that can be learned on a switch interface.
  C. Configure DHCP snooping to check the CHADDR field carried in a DHCP Request packet.

• Question 247:

  Which of the following are highlights of the Service Chain component of the Agile Controller? (Multiple Choice)

  A. Services are orchestrated based on the Layer 3 GRE tunnels and service devices can be deployed filexibly.
  B. Service orchestration operations are visualized in the topology, simplifying the configuration and management.
  C. Adding or deleting service devices does not change the physical topology of the live network and existing routes.
  D. Services are orchestrated automatically, without the need for manual maintenance.
  A. Services are orchestrated based on the Layer 3 GRE tunnels and service devices can be deployed filexibly.
  B. Service orchestration operations are visualized in the topology, simplifying the configuration and management.
  C. Adding or deleting service devices does not change the physical topology of the live network and existing routes.

• Question 248:

  In peer-to-peer VPN model, which of the following devices is directly connected to a client and is responsible for connecting VPN services to the carrier network?

  A. CE
  B. PE
  C. P
  D. Client device
  B. PE

• Question 249:

  Which of the following statements regarding Service Chain of the Agile Controller are true? (Multiple Choice)

  A. The Service Chain component uses a user control list (UCL) to implement access control by user level. The ACL rules are defined based on the source security group, destination security group, and port number.
  B. An orchestration device, usually a switch, directs service flows to a service device.
  C. A service device processes the service flows directed to it by an orchestration device. Generally, firewall, antivirus, and online behavior management devices can function as service devices.
  D. A service chain indicates the service data passing through the GRE tunnel.
  A. The Service Chain component uses a user control list (UCL) to implement access control by user level. The ACL rules are defined based on the source security group, destination security group, and port number.
  B. An orchestration device, usually a switch, directs service flows to a service device.
  C. A service device processes the service flows directed to it by an orchestration device. Generally, firewall, antivirus, and online behavior management devices can function as service devices.

• Question 250:

  Which of the following firewalls has the highest forwarding efficiency when processing non-firstpacket data flows?

  A. Packet filtering firewall
  B. Proxy firewall
  C. Stateful inspection firewall
  D. Software firewall
  A. Packet filtering firewall
  C. Stateful inspection firewall
  D. Software firewall