H12-821_V1.0試験無料問題集（302題）「Huawei HCIP-Datacom-Core Technology V1.0 認定」

出題：1

Which of the following methods is usually used by a network administrator to configure a newly purchased device for the first time?

A. SNMP

B. Login through the Console port

C. Telnet

D. FTP

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：2

On an STP network, the root bridge, root port, and designated port are elected in sequence. The election rules of these ports are different. List the steps for electing the root port in sequence.

正解：

Explanation:
The sequence of steps for electing the root port in an STP (Spanning Tree Protocol) network is as follows:
* Bridge ID Comparison: The Bridge ID (BID) is compared between the bridges in the network. A smaller value indicates a higher priority, meaning the bridge with the lowest Bridge ID is elected as the root bridge.
* RPC (Root Path Cost) Comparison: The path cost to reach the root bridge is calculated. The router with the lowest Root Path Cost (RPC) to the root bridge will have a higher priority for the election of the root port.
* Peer BID Comparison: If there is a tie in the Root Path Cost, the Peer BID is compared. A smaller Peer BID indicates a higher priority. This step ensures that if two routers have the same RPC, the one with the lower Peer Bridge ID wins.
* Local BID Comparison: If there is still a tie, the Local BID is compared. A smaller Local BID indicates a higher priority. This final step ensures that the router with the lowest local identifier is selected.
* Bridge ID Comparison:The first step in electing the root port is comparing the Bridge IDs. The bridge with the lowest Bridge ID becomes the root bridge. The Bridge ID is made up of the bridge priority and MAC address. The root bridge is the center of the network for STP, and all other ports will calculate their paths based on this root.

出題：3

Which of the following statements regarding the firewall zone security level is false?

A. The default security level of the new zone is 1.

B. Two zones cannot be configured with the same security level.

C. Only the security level of the user-defined zone can be configured.

D. The configured security level cannot be changed.

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

Which of the following statements regarding the LSA age field are true?

A. The unit of this field is seconds. In a LSDB, the LS age of a LSA decreases with time.

B. The unit of this field is seconds. In a LSDB, the LS age of a LSA increases with time.

C. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), the originator of this LSA needs to regenerate an instance of this LSA again.

D. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), any router can regenerate an instance of this LSA again.

正解：B,C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：5

Similar to the OSPF DR, the IS-IS DIS needs to be elected on a broadcast network. However, the OSPF DR is preemptive by default, whereas the IS-IS DIS is not preemptive by default.

A. FALSE

B. TRUE

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

Which of the following statements regarding multicast MAC addresses are false?

A. One multicast MAC address maps to only one multicast IP address.

B. A multicast MAC address identifies receivers of a multicast group on the data link layer.

C. The high 24 bits of the multicast MAC address are 0x01005E, the 25th bit is fixed to 1, and the lower
23 bits of the MAC address map to the lower 23 bits of the multicast IP address.

D. One multicast MAC address maps to 32 multicast IP addresses.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：7

A switch runs MSTP. The configuration is shown in the figure. What is the role of this switch in MSTI 1?

A. Non-root switch

B. Root switch

C. Secondary root switch

D. Uncertain

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

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

正解：

Sequential
Explanation:
ACL Matching in Huawei Routers:
* Access Control Lists (ACLs) are used to filter packets based on specific criteria, such as source
/destination IP, ports, or protocols.
* When a packet arrives, the Huawei router processes it against the configured ACL rules to decide whether to permit or deny the packet.

出題：9

In the OSPF protocol, inter-area route calculation involves only Router LSA, Network LSA, and Summary LSA.

A. TRUE

B. FLASE

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：10

Compress the 2001:0DB8:0000:C030:0000:0000:09A0 address.

正解：

2001:DB8:0:C030::9A0
Explanation:
To compress the IPv6 address 2001:0DB8:0000:C030:0000:0000:09A0, the following rules are applied:
* Remove leading zeros in each hextet (e.g., 0DB8 becomes DB8).
* Replace contiguous blocks of zeros with :: (only once in the address).Thus, the compressed form is
2001:DB8:0:C030::9A0 .

出題：11

After HSB is configured, the HSB channel fails to be established and cannot back up information on the active device to the standby device. What are the possible causes for this HSB function failure?

A. The two ACs have the same priority.

B. The retransmission count and interval for HSB service packets are different on the two devices.

C. The TCP channel is not established.

D. The source IP address and port number of the local end are different from the destination IP address and port number of the remote end.

正解：B,C,D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：12

The Internet Assigned Numbers Authority (IANA) allocates Class D addresses to IPv4 multicast. An IPv4 address is 32 bits long, and the four most significant bits of a Class D address are 1110.

A. FALSE

B. TRUE

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：13

A filter named si is configured on a device using the as-path-filter command and is applied to a specified BGP peer. The detailed configurations are as follows:
csharp
Copy
[SW1] ip as-path-filter si permit _65500$
[SW1] bgp 65100
[SW1-bgp] ipv4-family unicast
[SW1-bgp-af-ipv4] peer 10.1.1.2 as-path-filter si import
After the configuration is complete, which of the following statements is true about the way the local device processes the routes received from the peer?

A. It accepts only the routes whose AS_Path contains AS 65500.

B. It accepts only the routes originated from AS 65500.

C. It accepts only the routes that last pass through AS 65500.

D. It accepts only the routes forwarded by AS 65500.

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：14

The BFD Echo function checks the connectivity of the forwarding link by looping back packets. Which of the following statements are true about this function?

A. When configuring a BFD session supporting the BFD echo function, you need to configure both the local and remote discriminators.

B. If URPF is enabled on the peer end, BFD packets may be incorrectly discarded on the peer end.

C. The BFD Echo function applies only to single-hop BFD sessions.

D. In the BFD Echo function, the device uses the IP address of the outbound interface as the source IP address by default.

正解：B,D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：15

Which of the following statements regarding DR/BDR are false?

A. All DR others establish neighbor relationships with DR and BDR only.

B. In a broadcast network, DR and BDR must be elected. A broadcast network without a DR or BDR cannot operate normally.

C. DR others listen on the network address 224.0.0.6.

D. DR others listen on the multicast address 224.0.0.5.

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

H12-821_V1.0試験無料問題集「Huawei HCIP-Datacom-Core Technology V1.0 認定」