Huawei H12-821_V1.0 Übungsprüfungen
Zuletzt aktualisiert am 04.05.2025- Prüfungscode: H12-821_V1.0
- Prüfungsname: HCIP-Datacom-Core Technology V1.0
- Zertifizierungsanbieter: Huawei
- Zuletzt aktualisiert am: 04.05.2025
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.
Which of the following description about OSPF is correct?
- A . OSPF LSA is regularly updated every 30 minutes
- B . OSPF floods an LSU every 5s
- C . OSPF uses the Bellman-Ford algorithm, and each router runs the algorithm independently
- D . OSPF itself has no confirmation mechanism, so 0SPP relies on the lower layer protocol, namely TCP confirmation.
Which of the following description about verifying whether a received Hello message is legal is wrong?
- A . If the network type of the receiving port is point-to-point or virtual link, the Network Mask field is not checked
- B . The RouterDeadIntera1 field in the received Hello message must be consistent with the configuration of the receiving port
- C . If the network type of the receiving port is broadcast, point-to-multipoint or NBMA, the Network Mask field in the received Hello message may be inconsistent with that of the interface
- D . The E-bit in the Options field in the received Hello message must be consistent with the configuration of the relevant area
Which of the following statements about OSPF protocol packets is wrong?
- A . The header format of all OSPF packets is the same
- B . All OSPF packet headers carry the Router-ID field
- C . The OSPF protocol uses five types of packets to complete the transfer of routing information
- D . OSPF packets are encapsulated in UDP packets, and the port number is 89
Which of the following statements about OSPF protocol packets is wrong?
- A . The header format of all OSPF packets is the same
- B . All OSPF packet headers carry the Router-ID field
- C . The OSPF protocol uses five types of packets to complete the transfer of routing information
- D . OSPF packets are encapsulated in UDP packets, and the port number is 89
Which of the following is the configuration command for linkage between VRRP and BFD?
- A . vrrp vrid 1 track bfd-session session-name 1 reduced 100
- B . bfd-session vrrp vrid 1 track session-name 1 reduced 100
- C . vrrp vrid 1 track bfd-session-name 1 reduced 100
- D . track vrrp vrid 1 bfd-session session-name 1 reduced 100
Among the matters needing attention in configuring the Stub area, the correct description is:
- A . The virtual connection can pass through the stub area
- B . If an area is configured as a Stub area, all routers in the area must be configured with Stub area attributes
- C . The backbone area can be configured as a stub area
- D . ASBR can exist in the Stub area
During the operation of the DHCP protocol, the process from when the client applies to obtain an IP address is:
① The host sends a DHCP Request to request an IP address
② Server sends DHCP Offer message response
③ The host sends a DHCP Discover message to find DHCP
④ Server 4 Server responds with ACK response request after receiving the request
- A . ③ – ② – ① – ④
- B . ① – ② – ③ – ④
- C . ① – ④ – ③ – ④
- D . ③ – ④ – ① – ②
By default, on a router running IS-IS in a broadcast network, how many seconds does DIS send CSNP messages?
- A . 10
- B . 3.3
- C . 30
- D . 40
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