H12-811_V2.0 Zertifizierungsfragen, Huawei H12-811_V2.0 PrüfungFragen

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Huawei H12-811_V2.0 Prüfungsplan:

ThemaEinzelheiten
Thema 1
  • Ethernet Technology Basics: Covers Ethernet standards, switching principles, VLANs, and Layer 2 protocols used in enterprise network environments.
Thema 2
  • Network Security and Services: Covers essential network security mechanisms including ACLs, AAA, NAT, and basic firewall concepts to protect network infrastructure.
Thema 3
  • Data Center Network Basics: Covers the architecture and key technologies used in modern data center networks including virtualization and high-availability design concepts.
Thema 4
  • Typical Campus Networking Solution: Covers end-to-end campus network design scenarios, integrating switching, routing, security, and wireless technologies into a unified solution.
Thema 5
  • Network O&M and Troubleshooting: Covers network operation and maintenance practices, common diagnostic tools, and methodologies for identifying and resolving network faults.
Thema 6
  • WLAN Technology Basics: Covers wireless LAN standards, components such as APs and ACs, WLAN architecture, and basic configuration principles.

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Huawei HCIA-Datacom V2.0 H12-811_V2.0 Prüfungsfragen mit Lösungen (Q39-Q44):

39. Frage
Which of the following IP addresses cannot be configured for a host by default?

Antwort: D

Begründung:
The address 224.0.0.1/24 cannot be configured as a normal host IP address by default because it belongs to the Class D multicast address range. IPv4 multicast addresses range from 224.0.0.0 to 239.255.255.255 and are reserved for multicast group communication rather than assignment to host interfaces as ordinary unicast addresses. Therefore, option D is correct.


40. Frage
Drag and Drop Question
R1 has the following configurations:
[R1] acl number 3000
[R1-acl4-advance-3000] rule 5 permit ip source 10.0.1.0 0.0.0.1
[R1-acl4-advance-3000] rule 10 deny ip source 0.0.1.0 15.0.0.3
[R1-acl4-advance-3000] rule 15 deny ip source 10.2.1.1 0
[R1-acl4-advance-3000] rule 20 permit ip
[R1-acl4-advance-3000] quit
Match the following source IP addresses of packets with the corresponding rule IDs.

Antwort:

Begründung:

Explanation:
10.0.1.1 → rule 5
192.168.2.1 → rule 10
12.0.1.3 → rule 20
10.2.1.1 → rule 15
ACL rules are matched in order from top to bottom. Rule 5 matches only the specific pattern derived from 10.0.1.0 with a small wildcard variation, so it applies to 10.0.1.1. Rule 15 is an exact match for 10.2.1.1. Rule 10 does not match any of the given source addresses based on its wildcard constraint, so those packets fall through to the final permit rule. Rule 20 therefore handles all remaining unmatched traffic.


41. Frage
In the 802.11 standard, the 2.4 GHz frequency band is divided into 14 overlapping, staggered 20 MHz channels, numbered from 1 to 14.

Antwort: B

Begründung:
The IEEE 802.11 channel plan for the 2.4 GHz ISM band defines channels numbered 1 through 14, with adjacent channel center frequencies separated by 5 MHz. Because a traditional 20 MHz Wi-Fi channel occupies substantially more spectrum than the 5 MHz center-frequency spacing, neighboring channels overlap. This is why WLAN planning normally uses a limited set of non-overlapping or minimally overlapping channels, such as 1, 6, and 11 in many regulatory domains. The fact that fourteen channel numbers exist in the standard does not mean that every country permits operation on every one of them.
Regulatory domains restrict the usable subset; for example, channel 14 is not generally available worldwide and has historically been associated with specific Japanese operation. Huawei APs apply the configured regulatory domain to determine which channels may actually be selected. The statement concerns the standard channelization itself rather than regional permission to use every channel. On that basis, the statement is TRUE and option A is correct.


42. Frage
Which of the following is not a type of OSPF packets?

Antwort: D

Begründung:
OSPF defines five protocol packet types: Hello, Database Description (DD), Link State Request (LSR), Link State Update (LSU), and Link State Acknowledgment (LSAck). A Link State Advertisement, or LSA, is not itself an OSPF packet type. LSAs are data structures that describe topology or routing information and are carried inside OSPF packets, especially LSU packets. For example, an LSU packet may transport one or more LSAs to a neighbor, and an LSAck packet acknowledges receipt of LSAs. Hello packets discover and maintain neighbor relationships, DD packets summarize LSDB contents during synchronization, and LSR packets request specific missing LSAs. The distinction between an LSA and an LSU is important in Huawei Datacom study material because they operate at different conceptual levels: an LSA is routing information, whereas an LSU is the OSPF protocol packet that transports that information. Therefore, among the choices, LSA is the item that is not one of the five OSPF packet types. The correct answer is B.


43. Frage
After the root bridge is elected on an STP network, which of the following parameters may be compared by ports on non-root bridge nodes to elect the root port? (Select all that apply)

Antwort: A,B,C,D

Begründung:
On a non-root bridge, the root port is the port that receives the best BPDU toward the root bridge.
STP selects the root port by comparing several parameters in order. The first important parameter is the root path cost (RPC), so option B is correct. If multiple ports have the same RPC, the switch then compares the bridge ID (BID) of the upstream device sending the BPDU, making option C correct. If those are still equal, the switch compares the port ID (PID) of the upstream sending port, so option D is also correct.
If all of those values remain identical from the switch's perspective, the device can finally compare the local port ID to determine which local interface becomes the root port, so option A is also correct. HCIA-Datacom teaches this comparison logic as part of STP election rules. The process ensures deterministic selection of a single root port on every non-root switch.
Understanding the comparison sequence is essential for predicting STP topology behavior and for influencing port roles through path cost tuning or bridge-priority adjustments during campus network design and troubleshooting.


44. Frage
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