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| Section | Weight | Objectives |
|---|---|---|
| IP Technology Basics | 25% | - IPv6 basics and address types - NAT (Network Address Translation) - ICMP protocol - IPv4 addressing and subnetting - OSPF fundamentals (single-area) - Static routing and default routing - DHCP principles and configuration - ACL (Access Control List) |
| Typical Campus Networking Solution | 5% | - Network reliability and redundancy design - Campus network architecture design - Typical campus network deployment scenarios - Hierarchical network model (core, aggregation, access) |
| Network O&M and Troubleshooting | 10% | - Troubleshooting methodology and process - Network documentation and baselining - Network maintenance tools (ping, tracert, display commands) - Common network fault diagnosis |
| Ethernet Technology Basics | 20% | - VLAN intercommunication (sub-interface, VLANIF) - STP / RSTP / MSTP spanning tree protocols - Link aggregation (LACP) - MAC address table and forwarding - Ethernet overview and frame structure - VLAN principles and configuration |
| Network Security and Services | 15% | - Network security overview - IPsec VPN fundamentals - FTP / TFTP and file management - Network management protocols (SNMP, NTP) - Firewall basics and security zones - AAA (Authentication, Authorization, Accounting) |
| Data Communication Network Basics | 10% | - OSI and TCP/IP protocol models and functions of each layer - TCP/UDP principles - Basic network concepts, IP network architecture, and standardization organizations - Basic concepts and life cycle of campus network - ARP principles - Basic principles and operations of VRP (Versatile Routing Platform) - Data forwarding process |
| 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) |
| Data Center Network Basics | 5% | - Data center fabric concepts (VXLAN, SDN) - Data center network architecture overview - Cloud computing and virtualization basics |
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NEW QUESTION # 71
FILL BLANK
If a gateway router wants its connected IPv6 terminals to obtain IPv6 addresses through SLAAC, it must set the M-bit in RA messages to _______. (Enter only digits.)
Answer:
Explanation:
0
Explanation:
For SLAAC (Stateless Address Autoconfiguration), the router advertisement message must indicate that no DHCPv6 stateful configuration is required. This is done by setting the M-bit (Managed flag) to 0, which tells hosts to configure their IPv6 addresses using SLAAC only.
NEW QUESTION # 72
Given the following Python code, the output of print(Test) is the same as that of print(test). Test = ' Hello World ' ; test = ' hello world '
Answer: B
Explanation:
Python identifiers and string values are case-sensitive. The variables Test and test are therefore two different variable names, and the assigned strings also differ in capitalization. Test contains the string ' Hello World ' , whereas test contains ' hello world ' . Calling print(Test) outputs the capitalized form, while print(test) outputs the lowercase form. Python does not automatically normalize case when resolving variable names or when displaying strings. The same principle applies to function names, class names, dictionary keys, and most other identifiers or values used in network automation scripts. In Datacom automation work, case sensitivity matters when processing device output, JSON/YANG data, NETCONF payloads, interface names, and user-defined variables. A script that refers to Test when only test has been defined can even raise a NameError because Python treats the two identifiers as unrelated. In this question both variables are defined, but their printed output is visibly different. Consequently, the statement that the two print operations produce the same output is FALSE, option B.
NEW QUESTION # 73
Which of the following variables defined in Python code is invalid?
Answer: D
Explanation:
In Python, variable names must follow identifier rules: they cannot start with a digit. The variable
2_r1 is invalid because it begins with the number 2, which violates Python naming conventions.
The other variables are valid because they either start with letters or underscores and follow proper identifier rules.
NEW QUESTION # 74
R1 has the following configurations:
[R1] radius-server template 1
[R1-radius-1] radius-server authentication 10.1.6.6 1812
[R1-radius-1] radius-server accounting 10.1.6.6 1813
[R1-radius-1] radius-server shared-key cipher YsHsjx_202206139
[R1-radius-1] quit
[R1] aaa
[R1-aaa] authentication-scheme auth1
[R1-aaa-authen-auth1] authentication-mode radius
[R1-aaa-authen-auth1] quit
[R1-aaa] accounting-scheme acc1
[R1-aaa-accounting-acc1] accounting-mode radius
[R1-aaa-accounting-acc1] quit
[R1-aaa] domain huawei.com
[R1-aaa-domain-huawei.com] authentication-scheme auth1
[R1-aaa-domain-huawei.com] accounting-scheme acc1
[R1-aaa-domain-huawei.com] radius-server 1
[R1-aaa-domain-huawei.com] quit
[R1-aaa] quit
Which of the following statements is true?
Answer: C
Explanation:
Option D is correct. The AAA configuration binds the domain huawei.com to the authentication scheme auth1 , which uses RADIUS as the authentication mode, and to the accounting scheme acc1 , which also uses RADIUS. Therefore, when a user logs in with a user name in the format hcia-datacom@huawei.com , the device parses the suffix @huawei.com, matches the domain, and applies the configured RADIUS authentication method.
Option A is false because RADIUS does support accounting , and UDP port 1813 is commonly used for that purpose. Option B is false because a separate authorization server IP is not strictly required in this context; RADIUS can carry authorization attributes together with authentication/accounting processing depending on server behavior and device configuration. Option C is false because standard RADIUS communication uses UDP , not TCP, with authentication typically on port 1812 and accounting on 1813 . HCIA-Datacom teaches domain-based AAA processing as a key concept, where the user name suffix determines which authentication, authorization, and accounting policies are applied on the NAS device.
NEW QUESTION # 75
Drag and Drop Question
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. Match the port roles after the network is stable with the ports. (Token is reusable)
Answer:
Explanation:
Explanation:
Designated port: GE1/0/1 of SW1, GE1/0/2 of SW1, GE1/0/3 of SW2
Root port: GE1/0/1 of SW2, GE1/0/3 of SW3
Alternate port: GE1/0/2 of SW3
SW1 is the root bridge, so all its active interfaces toward other switches operate as designated ports. Each non-root switch selects its root port based on the lowest total path cost to SW1: SW2 prefers the direct link to SW1, while SW3 prefers the path via SW2 because it has a lower cumulative cost than its direct link to SW1. On the SW2-SW3 segment, the switch with the lower path cost to the root becomes the designated port, while the other side becomes an alternate (blocked) port to prevent loops.
NEW QUESTION # 76
......
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