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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: 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 2: Data Center Network Basics | 5% | - Data center network architecture overview - Data center fabric concepts (VXLAN, SDN) - Cloud computing and virtualization basics |
| Topic 3: Ethernet Technology Basics | 20% | - VLAN principles and configuration - STP / RSTP / MSTP spanning tree protocols - Link aggregation (LACP) - VLAN intercommunication (sub-interface, VLANIF) - MAC address table and forwarding - Ethernet overview and frame structure |
| Topic 4: Network Security and Services | 15% | - Firewall basics and security zones - IPsec VPN fundamentals - AAA (Authentication, Authorization, Accounting) - Network management protocols (SNMP, NTP) - Network security overview - FTP / TFTP and file management |
| Topic 5: Network O&M and Troubleshooting | 10% | - Troubleshooting methodology and process - Common network fault diagnosis - Network maintenance tools (ping, tracert, display commands) - Network documentation and baselining |
| Topic 6: IP Technology Basics | 25% | - IPv6 basics and address types - NAT (Network Address Translation) - ICMP protocol - IPv4 addressing and subnetting - OSPF fundamentals (single-area) - DHCP principles and configuration - ACL (Access Control List) - Static routing and default routing |
| Topic 7: Data Communication Network Basics | 10% | - TCP/UDP principles - ARP principles - Basic network concepts, IP network architecture, and standardization organizations - Data forwarding process - OSI and TCP/IP protocol models and functions of each layer - Basic concepts and life cycle of campus network - Basic principles and operations of VRP (Versatile Routing Platform) |
| Topic 8: Typical Campus Networking Solution | 5% | - Hierarchical network model (core, aggregation, access) - Network reliability and redundancy design - Campus network architecture design - Typical campus network deployment scenarios |
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NEW QUESTION # 22
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 # 23
Unlike distance-vector routing protocols, link-state routing protocols advertise link states instead of route information. Typical link-state routing protocols include RIP, OSPF, and IS-IS.
Answer: B
Explanation:
The statement is incorrect because RIP is a distance-vector routing protocol, whereas OSPF and IS-IS are link- state routing protocols.
According to the HCIA-Datacom routing protocol material, distance-vector protocols exchange routing information with neighboring routers. RIP uses hop count as its routing metric to determine the distance to destination networks.
Link-state protocols operate differently. Routers establish neighbor relationships and exchange Link State Advertisements (LSAs), which describe their interfaces, connected networks, and topology information.
Each router uses the collected link-state information to build a link-state database and calculate the best paths using a shortest-path algorithm.
OSPF and IS-IS use this link-state approach, but RIP does not.
Therefore, although the first part of the statement correctly describes link-state routing behavior, including RIP among link-state protocols makes the complete statement FALSE.
NEW QUESTION # 24
Which of the following IPv6 addresses is a link-local address ?
Answer: D
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 # 25
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,D
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.
Option A is incorrect because system-view is a command used to enter system view from user view, but undo system-view is not a valid command for exiting that view. Exiting system view is done with commands such as quit, return, or by using shortcut keys. This question checks the understanding that undo only applies to configurable features and parameters, not to view-switching commands in the CLI hierarchy.
NEW QUESTION # 26
The Protocol field in a packet's IP header identifies the upper-layer protocol that will continue to process the packet. For an ICMP packet, the Protocol field defaults to 0.
Answer: B
Explanation:
The Protocol field in the IP header identifies the upper-layer protocol such as ICMP, TCP, or UDP. ICMP is identified by protocol number 1, not 0. Therefore, the statement that ICMP uses a default value of 0 is incorrect.
NEW QUESTION # 27
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