Huawei H12-821 Online Practice Questions and Exam Preparation

Huawei H12-821 Online Questions & Answers

• Question 171:

  There are various types of VPNs, which can be applied to different layers. Which of the following network layers does SSL VPN belong to?

  A. Network layer
  B. Application layer
  C. Transport layer
  D. Data link layer
  B. Application layer

• Question 172:

  As shown in the figure, SWA, SWB, and SWC run the Rapid Spanning Tree Protocol (RSTP). What are the roles of SWB's GE0/0/2 and SWC's GE0/0/1?

  

  A. Backup port, alternative port
  B. Alternative port, backup port
  C. Backup port, root port
  D. Root port, designated port
  D. Root port, designated port

• Question 173:

  IGMP SSM mapping allows IGMPv1 and IGMPv2 group members to access the SSM network if a multicast source is manually bound to a multicast group. Which of the following statements are true about IGMP SSM mapping?

  A. IGMP SSM mapping converts (*, G) information in IGMPv1 and IGMPv2 Report messages to (S, G) information according to static SSM mapping entries configured on a multicast switch.
  B. IGMP SSM mapping does not apply to IGMPv3 Report messages. To provide SSM service to hosts running any IGMP version on a network segment, IGMPv3 must be enabled on the multicast router's interface that is connected to the network segment.
  C. The SSM group address ranges from 232.0.0.0 to 232.255.255.255.
  D. If IGMP SSM mapping is disabled, IGMPv1 and IGMPv2 do not support multicast deployment in SSM mode.
  A. IGMP SSM mapping converts (*, G) information in IGMPv1 and IGMPv2 Report messages to (S, G) information according to static SSM mapping entries configured on a multicast switch.
  B. IGMP SSM mapping does not apply to IGMPv3 Report messages. To provide SSM service to hosts running any IGMP version on a network segment, IGMPv3 must be enabled on the multicast router's interface that is connected to the network segment.
  D. If IGMP SSM mapping is disabled, IGMPv1 and IGMPv2 do not support multicast deployment in SSM mode.

• Question 174:

  On an OSPF network, LSDBs are used to store LSAs. Common LSAs include router LSAs and network LSAs. Which of the following items is not included in the 3-tuple that is used to uniquely identify an LSA?

  A. LS Sequence Number
  B. Link State ID
  C. Advertising Router
  D. LSType
  A. LS Sequence Number

• Question 175:

  CORRECT TEXT

  When receiving a packet, a Huawei router matches the packet against ACL rules. The default ACL matching order used by the Huawei router is ______________

  Sequential

• Question 176:

  A BGP device receives a route carrying an unknown attribute from a peer but does not know whether other devices need the attribute. In this case, the BGP device retains this attribute when advertising the route to other peers. Which of the following attributes is of this type?

  A. Community
  B. AS.Path
  C. MED
  D. OriginatorID
  A. Community

• Question 177:

  According to BGP route selection rules, the route with the higher Local_Pref is preferred.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 178:

  On an IS-IS network, each router can generate LSPs. Which of the following events trigger the generation of a new LSP?

  A. Related IS-IS interfaces go up or down.
  B. Periodic updates occur.
  C. Inter-area IP routes change.
  D. The IS-IS interface cost is increased.
  A. Related IS-IS interfaces go up or down.
  B. Periodic updates occur.
  D. The IS-IS interface cost is increased.

• Question 179:

  DRAG DROP

  Match the following IPv4 multicast protocols with the corresponding functions.

  Select and Place:

  

  

• Question 180:

  Which Of the following IEEE 802.11 standards is also known as Wi-Fi 6?

  A. 802.11ac
  B. 802.11n
  C. 802.11ax
  D. 802.11b
  C. 802.11ax