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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: WLAN Technology Basics | 10% | - WLAN architecture and working principles - 802.11 standards and WLAN components - Basic WLAN configuration |
| Topic 2: Data Center Network Basics | 5% | - Basic data center networking technologies - Data center architecture overview |
| Topic 3: Network O&M and Troubleshooting | 10% | - Fault diagnosis and troubleshooting methods - Network monitoring and management tools |
| Topic 4: Typical Campus Networking Solution | 5% | - End-to-end networking scenarios - Campus network design and integration |
| Topic 5: Data Communication Network Basics | 10% | - VRP system basics and operations - Campus network basics - ARP, TCP/UDP principles - Basic network concepts and architecture - Data forwarding process - OSI and TCP/IP protocol models |
| Topic 6: Ethernet Technology Basics | 20% | - Ethernet standards and switch principles - VLAN, STP, RSTP principles and configuration - Link aggregation and stacking technologies |
| Topic 7: Network Security and Services | 15% | - ACL, NAT principles and configuration - AAA and basic security technologies - DHCP, DNS, FTP, Telnet services |
| Topic 8: IP Technology Basics | 25% | - IP routing basics and forwarding - IPv4 addressing, subnetting - Static routing, OSPF fundamentals - IPv6 basics |
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NEW QUESTION # 137
Network administrators need to manage and maintain devices on the campus network. Which of the following protocols cannot modify device configurations, such as interface IP addresses, device names, and so on?
Answer: A
Explanation:
The protocol that cannot directly modify device configurations such as interface IP addresses or device names is SFTP, so option C is correct. SFTP is a secure file transfer protocol that runs over SSH and is mainly used to upload, download, and manage files between a client and a network device. It is commonly used for tasks such as transferring configuration files, system software, patches, or log files, but it does not itself provide an interactive or structured configuration modification mechanism.
By contrast, STelnet allows secure remote CLI login, through which an administrator can directly enter commands to change device settings. NETCONF is specifically designed for network configuration management and can modify configurations in a structured manner. SNMP can also modify certain managed object values through write operations when permissions and MIB support allow it, although in practice it is used more often for monitoring. HCIA-Datacom distinguishes between management-plane protocols based on their roles: interactive access, structured configuration, monitoring, and file transfer. This question checks whether the learner can identify SFTP as a file transfer tool rather than a direct configuration protocol.
NEW QUESTION # 138
Enabling STP and configuring the core device as the root bridge is recommended, even if no physical loop exists on the switched network. This prevents Layer 2 loops caused by incorrect connections between devices and avoids network reconvergence caused by root bridge preemption.
Answer: B
Explanation:
Enabling STP (Spanning Tree Protocol) and configuring a core switch as the root bridge is a best practice in Layer 2 network design, even when no physical loop currently exists. It helps prevent potential loops caused by miswiring or topology changes and ensures stable topology control by avoiding unexpected root bridge elections or preemption events that could trigger reconvergence.
NEW QUESTION # 139
With SNMP, an NMS can only display the device running status but cannot deliver configurations.
Answer: B
Explanation:
With SNMP (Simple Network Management Protocol), a Network Management System (NMS) can both monitor device status and configure settings on managed devices using SNMP Set commands.
NEW QUESTION # 140
Assume that PC1 and PC2 can communicate with each other. When R1 forwards a data packet sent from PC1 to PC2, which of the following statements are true?
Answer: A,B
Explanation:
This question tests the difference between Layer 3 addressing and Layer 2 encapsulation during routing. The IP packet originated by PC1 keeps PC1 ' s IP address as its source IP and PC2 ' s IP address as its destination IP as it traverses the routers. Ethernet MAC addresses, however, are rewritten at every routed hop. When R1 forwards the packet across the link toward R2, R1 builds a new Ethernet frame on its outgoing interface.
According to the exhibit, R1 ' s outgoing interface on the R1-R2 link uses MAC_C, so MAC_C is the source MAC address. The next-hop device on that link is R2, whose receiving interface uses MAC_D, so MAC_D is the destination MAC address. MAC_A belongs to PC1 and was relevant only on the first local Ethernet segment. MAC_F belongs to PC2 and is used on the final Ethernet segment from R2 to PC2, not on the R1- R2 link. Therefore the correct statements are B and D. The uploaded key B, C is incorrect.
NEW QUESTION # 141
R1 has four static routes, each of which has a reachable next hop. Given the following static route configuration, what is the next hop of the route to 20.0.0.0/30 in R1's routing table?
[R1] ip route-static 20.0.0.0 30 10.1.1.2
[R1] ip route-static 20.0.0.0 30 10.1.2.2 preference 7 0
[R1] ip route-static 20.0.0.0 30 10.1.3.2 preference 50
[R1] ip route-static 20.0.0.0 30 10.1.4.2 preference 100
Answer: C
Explanation:
When multiple static routes exist to the same destination prefix and all next hops are reachable, the device selects the route with the highest priority , which on Huawei devices means the lowest preference value . In this question, all four static routes point to the same destination network 20.0.0.0/30, but they have different preference values.
The route through 10.1.1.2 uses the default static route preference , which is 60 on Huawei devices. The route through 10.1.2.2 has a preference of 70 , the route through 10.1.3.2 has a preference of 50 , and the route through 10.1.4.2 has a preference of 100 . Since 50 is the lowest value among them, the route via 10.1.3.2 is preferred and installed in the routing table. Therefore, option D is correct. HCIA-Datacom emphasizes that when prefix length is identical, route preference determines which route is active. This principle is widely used in route backup design, where primary and floating backup static routes are configured using different preference values to control failover behavior.
NEW QUESTION # 142
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