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| Section | Objectives |
|---|---|
| Topic 1: Network Management and Troubleshooting | - Device management concepts - Basic troubleshooting tools and methods |
| Topic 2: Network Fundamentals | - OSI and TCP/IP models - Basic network topologies and devices |
| Topic 3: Network Security Basics | - Access control lists (ACL) - Basic network security concepts |
| Topic 4: Routing Technologies | - Static routing - Dynamic routing fundamentals (OSPF basics) |
| Topic 5: Switching Technologies | - STP/RSTP concepts - VLAN configuration and trunking |
| Topic 6: WLAN Basics | - Wireless networking fundamentals |
| Topic 7: IP Services | - DHCP and DNS concepts - NAT basics |
| Topic 8: IP Addressing and Subnetting | - IPv4 addressing and subnet masks - IPv6 fundamentals |
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NEW QUESTION # 73
After checking the status of GE0/0/1 on R1, you obtain the command output shown below. Which of the following statements are true? (Select all that apply)
Answer: B,C,D
Explanation:
Huawei network devices provide the display interface command to view interface status, physical characteristics, and operational parameters.
The output identifies the interface MAC address as b0c7-8733-d65c, confirming option A.
The command output also displays PVID: 1, meaning that the default VLAN ID associated with untagged ingress traffic is VLAN 1. Therefore, option B is correct.
Option C is incorrect because the output identifies the interface as COMMON COPPER, indicating an Ethernet electrical interface rather than an optical interface.
Finally, the output displays GE0/0/1 current state : UP, indicating that the physical interface is operational.
Therefore, option D is correct.
The HCIA-Datacom device operation material emphasizes interpreting interface information when checking network connectivity and diagnosing faults.
Consequently, the correct answers are A, B, and D.
NEW QUESTION # 74
The continuous development and innovation of upper-layer services pose higher requirements on general-purpose computing data center networks. Which of the following requirements can be met by deploying M-LAG and Eth-Trunk? (Choose all that apply.)
Answer: A,B,D
Explanation:
M-LAG improves network device redundancy and ensures service continuity in case of device or link failures, which directly supports high availability. Eth-Trunk aggregates multiple physical links into one logical link, increasing total transmission capacity and providing higher aggregated bandwidth. Together, M-LAG and Eth-Trunk also support seamless Layer 2 mobility and VM migration by maintaining consistent forwarding across dual-homed connections in data center environments. Elastic scalability is more related to architecture expansion and cloud resource elasticity rather than directly provided by M-LAG or Eth-Trunk mechanisms.
NEW QUESTION # 75
Assume that the IPv6 address of GE0/0/0 on R1 is 2001:db8:12::1/64. Which of the following is the solicited- node multicast address of this IPv6 address?
Answer: D
Explanation:
An IPv6 solicited-node multicast address is automatically derived from the lower 24 bits of a unicast or anycast IPv6 address. The fixed solicited-node prefix is FF02::1:FF00:0/104. The interface address in the question is 2001:db8:12::1. Its final 24 bits are 000001 in hexadecimal representation. Combining those 24 bits with the solicited-node multicast prefix produces FF02::1:FF00:1. This multicast address is used by IPv6 Neighbor Discovery for functions such as address resolution and Duplicate Address Detection, reducing the need to disturb every host on the local link in the way an IPv4 ARP broadcast does. FF02::1 is the all-nodes link-local multicast address and FF02::2 is the all-routers link-local multicast address, so neither represents the solicited-node group for this interface. Option A contains unrelated lower-order bits and does not correspond to the source address. Therefore the derived solicited-node multicast address is FF02::1:FF00:1, making option C correct.
NEW QUESTION # 76
After an Eth-Trunk in LACP mode is created, devices on both ends send LACPDUs to elect the Actor. Which of the following parameters in LACPDUs determine the Actor election?
Answer: A,B,D
Explanation:
In LACP (Link Aggregation Control Protocol), the Actor is elected based on device priority, interface priority, and MAC address. These parameters ensure consistency and determine the active links within the aggregated trunk. The interface number alone is not a determining factor.
NEW QUESTION # 77
On the campus network shown in the figure below, the core switch Core1 functions as a Layer 3 gateway and as a DHCP server to dynamically assign IP addresses to AP1, PC1, PC2, and PC3. The network below Core1 is a Layer 2 network. WAC1 and R1 are connected to Core1 at Layer 3. AP1 goes online through VLAN 100.
The wireless service VLAN is VLAN 101, and the wired service VLANs for PC2 and PC3 are VLAN 102 and VLAN 103, respectively. Additionally, the direct forwarding mode is used for wireless traffic forwarding.
If no additional VLANs are allowed on device interfaces, which of the following VLANs must be allowed on GE1/0/1 of ACC1? (Select all that apply)
Answer: A,C,D
Explanation:
According to the original topology and service-planning question, the required VLANs are VLAN 100, VLAN 101, and VLAN 102, so options A, B, and C are correct. In HCIA-Datacom campus design questions, VLAN planning is usually based on service separation, such as user services, voice services, wireless services, management services, or specific departmental segmentation. Each service type is assigned an appropriate VLAN so that broadcast domains are separated and policies can be applied more effectively.
The reason option D is not selected is that it does not match the service requirements shown in the original figure. VLAN planning must follow the actual service design rather than arbitrary numbering. HCIA- Datacom emphasizes that campus VLAN planning should align with traffic isolation, gateway design, security policy deployment, and future scalability. Proper VLAN assignment helps simplify troubleshooting, reduce unnecessary broadcasts, and support service-based policy enforcement. This question tests the ability to read a service topology and identify which VLANs are actually required by the depicted design rather than choosing extra VLANs that are not part of the planned campus solution.
NEW QUESTION # 78
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