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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Security and Services | 15% | - ACL, NAT principles and configuration - AAA and basic security technologies - DHCP, DNS, FTP, Telnet services |
| Topic 2: Ethernet Technology Basics | 20% | - Link aggregation and stacking technologies - VLAN, STP, RSTP principles and configuration - Ethernet standards and switch principles |
| Topic 3: Network O&M and Troubleshooting | 10% | - Fault diagnosis and troubleshooting methods - Network monitoring and management tools |
| Topic 4: IP Technology Basics | 25% | - IP routing basics and forwarding - IPv6 basics - Static routing, OSPF fundamentals - IPv4 addressing, subnetting |
| Topic 5: Data Center Network Basics | 5% | - Data center architecture overview - Basic data center networking technologies |
| Topic 6: Data Communication Network Basics | 10% | - OSI and TCP/IP protocol models - Campus network basics - VRP system basics and operations - Basic network concepts and architecture - ARP, TCP/UDP principles - Data forwarding process |
| Topic 7: Typical Campus Networking Solution | 5% | - End-to-end networking scenarios - Campus network design and integration |
| Topic 8: WLAN Technology Basics | 10% | - WLAN architecture and working principles - 802.11 standards and WLAN components - Basic WLAN configuration |
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NEW QUESTION # 80
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: B
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 # 81
On the switched network shown in the figure, STP is enabled on all devices. SW1 is the root bridge. The port costs are shown in the figure. Other parameters retain the default values. After the network is stable, which of the following paths is used by SW1 to send traffic to SW4?
Answer: B
Explanation:
After STP convergence, only ports in the forwarding state participate in active traffic forwarding, while redundant ports may be placed into the blocking or discarding state to eliminate loops. According to the topology and STP role election shown in the question, the valid forwarding path from SW1 to SW4 is SW1 # SW3 # SW4, so option B is correct.
This means that the direct alternative path or the path through SW2 is not the active spanning-tree forwarding path after election and state transition. STP selects paths based on the root bridge, path cost, bridge ID, and port ID. Once the root bridge and port roles are determined, some links remain active and others are blocked to ensure a loop-free Layer 2 topology. HCIA-Datacom emphasizes that the resulting forwarding topology is a tree, not a mesh, even if the physical topology contains redundant links. Understanding the actual forwarding path after STP convergence is important for troubleshooting connectivity, predicting traffic behavior, and verifying whether bridge priority and path-cost settings have produced the intended design outcome in campus switching networks.
NEW QUESTION # 82
On the OSPF network shown in the figure, all IP addresses can communicate with each other. Then the following configurations are added on R1:
Which IP address of S1 can successfully ping 10.2.23.3?
Answer: C
Explanation:
According to the topology and the original question scenario, the correct answer is 10.2.1.1, so option B is selected. In HCIA-Datacom troubleshooting questions of this type, the goal is usually to identify the correct management address, next-hop interface address, or testing destination based on the addressing design shown in the figure.
The answer depends on the role of the device and the direction of the connectivity verification. In such topologies, each interface belongs to a specific network segment, and the selected address must match the intended test target on that segment. If the test is being performed toward the neighboring device or a specific reachable interface, using the correct IP on the proper subnet is essential. An incorrect address may still look familiar from the topology but would not represent the right test endpoint. HCIA-Datacom places strong emphasis on reading topology labels carefully, matching interface addresses to subnet assignments, and choosing the correct destination when using tools such as ping, tracert, or service-specific connectivity tests.
This question mainly checks address recognition accuracy in a troubleshooting context.
NEW QUESTION # 83
After checking the status of GE0/0/1 on R1, you obtain the command output shown below. Which of the following statements are true? (Choose all that apply.)
Answer: A,B,D
Explanation:
The interface status shows both the physical layer and line protocol are UP, confirming the physical status is UP. The output explicitly indicates PVID: 1, so the VLAN ID is 1. The hardware address field displays b0c7-8733-d65c, which is the MAC address of the interface. The port mode is COMMON COPPER, meaning it is a copper Ethernet interface rather than an optical interface, so the statement about optical type is incorrect.
NEW QUESTION # 84
Huawei network devices such as switches and routers can establish NETCONF channels with iMaster NCE- Campus through DHCP. The DHCP server notifies DHCP clients of the URL/IP address and port number of iMaster NCE-Campus through Option_____. (Enter only digits.)
Answer:
Explanation:
148
Explanation:
Huawei uses DHCP Option 148 for IPv4-based plug-and-play or zero-touch deployment of devices to iMaster NCE-Campus. The DHCP server can include controller information in this vendor-specific option, allowing a switch, router, or cloud-managed AP to obtain the southbound address or URL of iMaster NCE-Campus together with the required management port. After the device receives normal addressing information and the Option 148 parameters, it can reach the controller and establish the management channel, including NETCONF-based management in supported deployment scenarios. Huawei documentation distinguishes this from IPv6 deployment, where Option 17 can be used for equivalent controller discovery. The Option 148 value commonly carries fields such as the controller management mode, domain or IP address, and management port. This removes the need to manually enter controller information on every new device and is widely used in iMaster NCE- Campus onboarding workflows. Therefore, the numeric value required in the blank is 148, matching the source answer and Huawei campus deployment documentation.
NEW QUESTION # 85
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