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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Typical Campus Networking Solution | 5% | - Campus network design and integration - End-to-end networking scenarios |
| Topic 2: Network O&M and Troubleshooting | 10% | - Network monitoring and management tools - Fault diagnosis and troubleshooting methods |
| Topic 3: Data Communication Network Basics | 10% | - Basic network concepts and architecture - Data forwarding process - VRP system basics and operations - OSI and TCP/IP protocol models - Campus network basics - ARP, TCP/UDP principles |
| Topic 4: Network Security and Services | 15% | - DHCP, DNS, FTP, Telnet services - AAA and basic security technologies - ACL, NAT principles and configuration |
| Topic 5: Ethernet Technology Basics | 20% | - Ethernet standards and switch principles - Link aggregation and stacking technologies - VLAN, STP, RSTP principles and configuration |
| Topic 6: Data Center Network Basics | 5% | - Data center architecture overview - Basic data center networking technologies |
| Topic 7: IP Technology Basics | 25% | - IP routing basics and forwarding - Static routing, OSPF fundamentals - IPv4 addressing, subnetting - IPv6 basics |
| Topic 8: WLAN Technology Basics | 10% | - WLAN architecture and working principles - Basic WLAN configuration - 802.11 standards and WLAN components |
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NEW QUESTION # 121
Drag and Drop Question
On a general-purpose computing data center network, network administrators need to use various network technologies or architectures to ensure high network stability and efficiency.
Match the following network technologies or architectures with the requirements they meet.
Answer:
Explanation:
Explanation:
M-LAG โ High availability
Spine-Leaf โ Scalability
VXLAN โ User isolation
M-LAG provides device-level and link-level redundancy, ensuring services continue running even if a link or device fails, which directly improves high availability. Spine-Leaf is a scalable data center architecture designed to allow easy horizontal expansion with predictable performance as the network grows. VXLAN enables network virtualization by isolating tenant networks over a shared physical infrastructure, supporting strong user or tenant isolation.
NEW QUESTION # 122
Which of the following IPv6 addresses is a link-local address ?
Answer: A
Explanation:
In IPv6, link-local addresses use the prefix FE80::/10 . These addresses are automatically generated or configured for communication on the local link only and are not routed across Layer 3 boundaries. Therefore, among the given options, FE80::FA63:DBFF:FE9E:10 is the correct link-local address, making option C correct.
Options A and B belong to the Unique Local Address (ULA) space, which uses the prefix FC00::/7 . These addresses are intended for private internal IPv6 networks, somewhat similar in purpose to private IPv4 address ranges, but they are not link-local addresses. Option D , which starts with 2001::, is a global unicast address , used for routable communication across IPv6 networks. HCIA-Datacom teaches that link-local addresses are essential in IPv6 because they are used for functions such as neighbor discovery, router discovery, and routing protocol communication on the local segment. Even when a device has global unicast addresses, the link-local address still plays an important role in normal IPv6 operation and protocol adjacency establishment.
NEW QUESTION # 123
Which of the following commands can be used to enable OSPF on the loopback interface (10.0.1.1/32) of R1?
(Select all that apply)
Answer: A,B,C,D
Explanation:
In Huawei OSPF configuration, the network command identifies interfaces whose IP addresses match the specified network address and wildcard mask.
A wildcard mask uses zero bits to indicate positions that must match exactly and one bits to indicate positions that can vary.
Option A matches only the specific address 10.0.1.1.
Option B matches all addresses within 10.0.1.0/24, including 10.0.1.1.
Option C matches the larger 10.0.0.0/16 range, which also includes the loopback address.
Option D uses a wildcard mask of 255.255.255.255, meaning that all IPv4 address bits are ignored during matching. Consequently, every eligible IPv4 interface address matches.
All four commands therefore match the loopback interface address and can enable OSPF on that interface when configured in the appropriate OSPF area.
The correct answers are A, B, C, and D.
NEW QUESTION # 124
An enterprise has deployed a Huawei WLAN, but some STAs cannot associate with wireless signals. To troubleshoot this issue, you log in to the WAC and run related commands. The command output is as follows.
According to the command output, which of the following is the possible cause of the STA association failure?
Answer: B
Explanation:
The command output in the exhibit shows that both AP radios are enabled, so a disabled radio is not supported by the evidence. The 5 GHz radio has relatively low channel utilization, while the 2.4 GHz radio reports channel utilization of approximately 90 percent. Such a high utilization value indicates that the air interface is heavily occupied by transmissions or interference. Huawei WLAN troubleshooting guidance identifies a busy air interface and a heavily loaded AP as possible causes of STA association failures because management and authentication frames may be delayed or lost when contention is severe. The displayed radio information alone does not prove that the affected STAs are in a blacklist or absent from a whitelist; those conditions require separate STA or VAP access-control information. Therefore, option A is the only choice directly supported by the command output. The correct troubleshooting interpretation is that excessive channel utilization on the radio can make the air interface busy and prevent some STAs from completing association successfully. The verified answer is A.
NEW QUESTION # 125
Which of the following port states are included in Rapid Spanning Tree Protocol (RSTP)?
Answer: A,C,D
Explanation:
RSTP (Rapid Spanning Tree Protocol) combines the Blocking, Listening, and Disabled states into Discarding, reducing the number of states to Discarding, Learning, and Forwarding. RSTP does not use a separate Listening state, as in standard STP.
NEW QUESTION # 126
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