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Huawei H12-821_V1.0 Exam Syllabus Topics:

Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:

1. VRRP is implemented based on the priority and preemption functions of VRRP routers. Which of the following statements is false about the VRRP solution?

A) Even if the VRRP device is the IP address owner, it still needs to participate in the election and does not directly transition to the Master state when receiving a message indicating that the interface goes Up.
B) When preemption is disabled, a backup device does not preempt the master role even if it has a higher priority than the current master, provided that the current master is working properly.
C) When preemption is enabled, a backup device preempts the master role if it has a higher priority than the current master.
D) The master periodically sends VRRP Advertisement packets in the VRRP group to advertise its configurations such as the priority.

2. On a network, some switches are enabled with RSTP and some switches are enabled with STP. What will happen?

A) STP and RSTP calculation are performed independently.
B) A Huawei switch changes from RSTP to STP. After the STP-enabled switch is removed from the network, the RSTP-enabled switch can be moved back to the RSTP mode.
C) A Huawei switch changes its mode from STP to RSTP. After the RSTP-enabled switch is removed from the network, the STP-enabled switch can be moved back to the RSTP mode.
D) STP and RSTP are compatible with each other, but the rapid convergence of RSTP is unavailable.

3. Which of the following statements is false about BFD?

A) In demand mode, after a BFD session is set up, the system does not periodically send BFD Control packets.
B) In asynchronous mode, two systems periodically exchange BFD Control packets at the negotiated interval. If one system does not receive any BFD Control packets from the other within the detection interval, the BFD session is declared down.
C) The asynchronous mode does not support the echo function.
D) The asynchronous mode is the primary BFD operating mode.

4. On an OSPF network, if two routers with the same router ID run in different areas and one of the routers is an ASBR, LSA flapping occurs.

A) FALSE
B) TRUE

5. As shown in the figure, data traffic is forwarded in tunnel mode along the path of STA - > HAP - > HAC - > upper-layer network before roaming. What is the flow direction of data traffic after Layer 3 roaming?

A) STA - > FAP - > FAC - > HAC - > HAP - > HAC - > Upper-layer network
B) STA - > FAP - > FAC - > HAC - > Upper-layer network
C) STA - > FAP - > FAC - > HAC - > HAP - > Upper-layer network
D) STA - > FAP - > FAC - > Upper-layer network

Solutions: