Huawei H12-821_V1.0 Practice Exams
Last updated on Mar 31,2025- Exam Code: H12-821_V1.0
- Exam Name: HCIP-Datacom-Core Technology V1.0
- Certification Provider: Huawei
- Latest update: Mar 31,2025
Among the routing policy tools commonly used in BGP, the one that can be used to match a specific AS_path is:
- A . filter-policy
- B . ip-prefix
- C . ip as-path-filer
- D . community-filter
In a broadcast network, what is the default interval for sending Hello by DIS?
- A . 5s
- B . 10s
- C . 40s
- D . 3.3s
As shown in the figure, in the network running the RSTP protocol, the original root port of SWC fails and the port is in the Down state. At this time, which of the following processes will the network go through to achieve stability?
- A . The standby port on the SWC becomes the new root port and enters the Forwarding state after going through the Learning state
- B . SWC re-elects the root port and directly enters the Forwarding state
- C . The standby port on the SWC becomes the new root port and directly enters the Forwarding state
- D . SWC re-elects the root port and enters the Forwarding state after Learning
Which of the following strategies or tools cannot be applied to OSPF?
- A . access-list
- B . prefix-list
- C . route-policy
- D . as-path filter
Regarding the description of LSA header information in OSPF AS -External C LSA, which is wrong?
- A . Link State ID indicates the destination network address
- B . Forwarding Address is always 0.0.0.0
- C . Advertising Router indicates the Router ID of ASBR
- D . Net mask indicates the network mask of the destination network segment
Which of the following is the command to configure the VRRP preemption delay?
- A . vrrp vrid 1 preempt-mode timer delay 20
- B . vrrp vrid 1 timer delay 20
- C . vrrp vrid 1 preempt-timer 20
- D . vrrp vrid 1 preempt-delay 20
Regarding the description of IGMP Snooping-working mechanism, which is the correct?
- A . The layer 2 switch establishes and maintains the PIM routing table on the layer 2 by continuously monitoring IGMP messages.
- B . When IGMP Snooping is not running, the multicast message will be broadcast on the second layer. After running IGMP Snooping, the message will no longer be broadcast on the second layer, but will be multicast on the second layer.
- C . If the host sends an IGMP leave message, the switch will add the host to the corresponding multicast table.
- D . If the host sends an IGMP host report message, the switch will delete the multicast entry corresponding to the hos.t
In PIM-SM, which of the following description of RP is wrong?
- A . The initial multicast streams of all groups in the shared tree are forwarded to the receiver through the RP
- B . One RP can connect to multiple multicast services at the same time, and one multicast group can correspond to multiple RPs.
- C . RP can be responsible for the forwarding of several or all multicast groups. There can be one RP in the network
- D . All members of the group and multicast sources that send multicast data to the group converge to the only RP.
About the description about the OSPF calculating the shortest path tree stage, which is the correct?
- A . The first stage calculates the Stub network segment, and the second stage calculates the router node and Transit network segment.
- B . The first stage calculates routing nodes and Transit network segments, and the second stage calculates Stub network segments.
- C . The first stage calculates the stub segment, and the second stage calculates the routing node.
- D . The first stage calculates the routing nodes, and the second stage calculates the Stub network segment.
When the IPv6 address of the host is configured in the stateless address configuration method, and other parameters except the address are obtained through DHCPv6, how to set the M bit and 0 bit in the RA message?
- A . M=0 0=0
- B . M=1 0=0
- C . M=1 0=1
- D . M=0 0=1