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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: IP Technology Basics | 25% | - ICMP protocol - ACL (Access Control List) - OSPF fundamentals (single-area) - NAT (Network Address Translation) - Static routing and default routing - DHCP principles and configuration - IPv6 basics and address types - IPv4 addressing and subnetting |
| Topic 2: Data Communication Network Basics | 10% | - Basic concepts and life cycle of campus network - TCP/UDP principles - Basic principles and operations of VRP (Versatile Routing Platform) - Basic network concepts, IP network architecture, and standardization organizations - ARP principles - OSI and TCP/IP protocol models and functions of each layer - Data forwarding process |
| Topic 3: Ethernet Technology Basics | 20% | - Link aggregation (LACP) - MAC address table and forwarding - STP / RSTP / MSTP spanning tree protocols - VLAN principles and configuration - Ethernet overview and frame structure - VLAN intercommunication (sub-interface, VLANIF) |
| Topic 4: WLAN Technology Basics | 10% | - WLAN RF fundamentals (channels, bands) - WLAN overview and 802.11 standards - WLAN basic configuration and troubleshooting - WLAN networking architecture (AC + AP) |
| Topic 5: Typical Campus Networking Solution | 5% | - Campus network architecture design - Typical campus network deployment scenarios - Network reliability and redundancy design - Hierarchical network model (core, aggregation, access) |
| Topic 6: Network Security and Services | 15% | - Network security overview - FTP / TFTP and file management - Network management protocols (SNMP, NTP) - IPsec VPN fundamentals - AAA (Authentication, Authorization, Accounting) - Firewall basics and security zones |
| Topic 7: Data Center Network Basics | 5% | - Data center fabric concepts (VXLAN, SDN) - Data center network architecture overview - Cloud computing and virtualization basics |
| Topic 8: Network O&M and Troubleshooting | 10% | - Network documentation and baselining - Network maintenance tools (ping, tracert, display commands) - Common network fault diagnosis - Troubleshooting methodology and process |
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NEW QUESTION # 124
The undo command can be used in the CLI of a Huawei device to restore default settings, disable functions, or delete configurations. Which of the following are correct undo commands? (Select all that apply)
Answer: A,B,C
Explanation:
On Huawei devices, the undo command is used to remove a previously applied configuration, disable a function, or restore a parameter to its default state. In option B, undo ip address is a valid interface-view command that removes the IP address configured on the interface. In option C, undo portswitch is also a valid interface command on switch interfaces that converts a Layer 2 interface into a Layer 3 interface when supported by the device. In option D, undo sysname restores the device name to the default hostname, which is valid in system view.
NEW QUESTION # 125
Which of the following descriptions regarding the TTL field of the IP packet is correct?
Answer: B
Explanation:
The Time to Live (TTL) field in an IP packet is decremented by 1 each time the packet passes through a router. When the TTL reaches zero, the packet is discarded to prevent it from circulating indefinitely.
NEW QUESTION # 126
An enterprise ' s network switch has security vulnerabilities because its software version is outdated. The administrator wants to upload a patch file through FTP to fix the vulnerabilities. Which of the following files is a patch file that can be uploaded by the administrator?
Answer: C
Explanation:
Huawei network devices use file extensions to distinguish software images, patches, configuration files, and other packages. A patch package uses the .pat extension, so test.pat is the only option that represents a Huawei patch file. A .cc file is normally associated with a VRP system software package rather than a patch.
Configuration data is stored in supported configuration formats and is not identified by the .pat extension. An administrator can transfer the patch file to the device by FTP, SFTP, or another supported file-transfer method and then activate or load it according to the platform ' s patch procedure. The purpose of a patch is to correct defects or vulnerabilities without necessarily replacing the complete system software package. Because the question asks specifically for the file that can be uploaded as a patch to remediate a security vulnerability, the filename ending in .pat is the technically correct selection. The source answer B is therefore consistent with Huawei Datacom file-management conventions.
NEW QUESTION # 127
An engineer is configuring Fit AP onboarding on a Huawei WAC. After the engineer completes network connectivity and CAPWAP configuration, the next step is to configure the AP authentication mode. Which AP authentication modes can the engineer choose to configure?
(Choose all that apply.)
Answer: A,C,D
Explanation:
Huawei WAC supports multiple AP authentication modes during Fit AP onboarding, including MAC-based authentication, SN-based authentication, and no-authentication mode. These methods define how the WAC verifies and allows APs to join the network. IP-based authentication is not a valid AP authentication mode in this context.
NEW QUESTION # 128
On a switched network where STP is enabled on all devices, when a downstream device detects a topology change, it continuously sends configuration BPDUs to the upstream device until the root bridge is informed of the topology change.
Answer: B
Explanation:
This statement is false . In classic STP, when a non-root switch detects a topology change, it does not continuously send configuration BPDUs upstream to notify the root bridge. Instead, it sends a Topology Change Notification (TCN) BPDU toward the root bridge through its root port. Each upstream switch acknowledges the TCN and forwards it further until it reaches the root bridge.
After the root bridge receives the topology change notification, the root bridge sets the Topology Change (TC) flag in its configuration BPDUs, and those configuration BPDUs are then propagated throughout the network. Therefore, topology-change notification and normal configuration BPDU transmission are different functions. The statement is wrong because it confuses TCN BPDUs with configuration BPDUs , and also inaccurately describes the notification behavior. HCIA-Datacom requires learners to distinguish between these BPDU types and understand how STP reacts to topology changes by accelerating MAC address aging and informing the network through the root bridge. This process helps the Layer 2 topology converge and reduces long-lasting forwarding inconsistencies after a link or port-state change.
NEW QUESTION # 129
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