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Huawei H12-821_V1.0 Practice Exam Questions
HCIP-Datacom-Core Technology V1.0
Total Questions : 346
Update Date : May 18, 2026
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Huawei H12-821_V1.0 Sample Question Answers
Question # 1On a WLAN, engineers can use the VLAN pool mechanism to assign access users to different VLANs, which helps reduce the number of broadcast domains and improve network performance. VLAN pools support two VLAN assignment algorithms: even and hash. Drag the advantages and disadvantages to the two algorithms.
A. Even Algorithm – Advantages
B. Even Algorithm – Disadvantages
C. Hash Algorithm – Advantages
D. Hash Algorithm – Disadvantages
Question # 2
When receiving a packet, a Huawei router matches the packet against ACL rules. The default ACL matching order used by the Huawei router is:
A. Permit first, then deny
B. Deny first, then permit
C. Longest prefix match first
D. Random order
Question # 3
FD for OSPF is deployed on a directly connected link. If the physical link is disconnected,Drag the following BFD processes to the corresponding sequence numbers.
A. Detect link failure
B. Notify OSPF of neighbor down
C. Tear down adjacency
D. Forward traffic over alternate path
Question # 4
When deploying BFD, you need to adjust some parameters so that it can better detect the network status. Which of the following statements is false about BFD optimization?
A. After a high priority is configured for BFD packets, BFD packets are preferentially forwarded.
B. To quickly learn about the network status and performance requirements, you can set the interval for sending BFD packets to the minimum value.
C. On a live network, some devices switch traffic only when a BFD session changes to the Up state. If a routing protocol goes Up later than an interface, no route is available for switching traffic back, leading to traffic loss. To resolve this issue, configure a delay to compensate for the time difference caused when the routing protocol goes Up later than the interface.
D. If a BFD session flaps, master/backup switchovers are frequently performed on the application associated with the BFD session. To prevent this, set the WTR time of the BFD session.
Question # 5
There are two types of routing entries on a PIM network. (S, G) routing entries are used to set up on a PIM network and are applicable to both PIM-DM and PIM-SM networks.
A. (S, G)
B. (*, G)
C. (S, )
D. (, *)
Question # 6
During routine maintenance, an enterprise administrator runs a command to check VRRP group information. Which of the following statements is false about the command output? yaml CopyEdit display vrrp verbose Vlanif100 | Virtual Router 1 State: Master Virtual IP: 10.1.1.100 Master IP: 10.1.1.2 PriorityRun: 120 PriorityConfig: 120 DR: None BDR: None MTU: 0 Preempt: YES Delay Time: 20s Remain: -- Track: YES Priority Reduced: 20 Auth Type: MD5 BFD-session State: UP
A. Preemption is enabled for the VRRP group.
B. This VRRP group is an mVRRP group.
C. Authentication is enabled for the VRRP group.
D. The ID of the VRRP group is 1.
Question # 7
When creating a single-hop BFD session for the first time, bind the single-hop BFD session to the peer IP address and the local address. To modify a configured BFD session, delete it and create a new one.
A. TRUE
B. FALSE
Question # 8
On an RSTP network, port priorities may be compared during root port or designated port election. Which of the following values is the default priority of a port on a Huawei switch?
A. 1
B. 128
C. 4096
D. 32768
Question # 9
On a WLAN, the HSB service sets up an HSB channel between two devices that back up each other, maintains the channel status, and backs up data. Which of the following can HSB back up in real time?
A. CAPWAP tunnel information
B. DHCP address information
C. AP entries
D. User data information
Question # 10
An OSPF AS-external LSA describes a route to an AS external network. When the field in the LSA is 0.0.0.0, the traffic destined for the external network is sent to the ASBR that imports this external route. (Enter the acronym in uppercase.)
A. FWD
B. METRIC
C. LSID
D. ROUTER
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