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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Communication Network Basics | 10% | - ARP, TCP/UDP principles - Basic network concepts and architecture - VRP system basics and operations - OSI and TCP/IP protocol models - Campus network basics - Data forwarding process |
| Topic 2: Data Center Network Basics | 5% | - Data center architecture overview - Basic data center networking technologies |
| Topic 3: Network Security and Services | 15% | - DHCP, DNS, FTP, Telnet services - ACL, NAT principles and configuration - AAA and basic security technologies |
| Topic 4: Network O&M and Troubleshooting | 10% | - Fault diagnosis and troubleshooting methods - Network monitoring and management tools |
| Topic 5: Typical Campus Networking Solution | 5% | - End-to-end networking scenarios - Campus network design and integration |
| Topic 6: Ethernet Technology Basics | 20% | - VLAN, STP, RSTP principles and configuration - Ethernet standards and switch principles - Link aggregation and stacking technologies |
| Topic 7: WLAN Technology Basics | 10% | - WLAN architecture and working principles - 802.11 standards and WLAN components - Basic WLAN configuration |
| Topic 8: IP Technology Basics | 25% | - IPv4 addressing, subnetting - Static routing, OSPF fundamentals - IP routing basics and forwarding - IPv6 basics |
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115. Frage
The administrator performs the configuration shown in the figure on SW1. After the network is stable, the administrator pings the IP address of PC2 from PC1. The connectivity is normal. Then, the administrator runs the undo vlan 10 command on SW1. After the network is stable, the administrator pings the IP address of PC2 from PC1 again. Which of the following statements are false about this scenario? (Select all that apply)
Antwort: A,B,D
Begründung:
Initially, both PC1 and PC2 belong to VLAN 10 through their access interfaces. They therefore communicate within the same Layer 2 broadcast domain.
When VLAN 10 is deleted, the switch removes its associated VLAN membership, and the affected access interfaces revert to the default VLAN 1. Both PCs consequently remain in the same broadcast domain and can communicate.
Option A is true because PC1 can still reach PC2 after both ports return to VLAN 1.
Option B is false because the switch internally associates received frames with VLAN information during forwarding.
Option C is false because the switch can forward traffic in both directions.
Option D is false because the switch no longer assigns the deleted VLAN 10 to incoming frames.
Therefore, B, C, and D are false statements.
116. Frage
The following command is configured on the VTY interfaces of R1:
[R1-ui-vty0-4] protocol inbound all
In this case, FTP, Telnet, and SSH users can all use the five VTY interfaces.
Antwort: B
Begründung:
VTY interfaces provide remote terminal sessions to the device. The command protocol inbound all allows the interactive remote-login protocols supported by that VTY implementation, notably Telnet and SSH/STelnet.
FTP is not a VTY terminal-login protocol. FTP is a file-transfer service that uses its own server/client process, TCP sessions, authentication, and file system permissions; enabling FTP service does not make an FTP user consume a VTY terminal line in the same manner as a Telnet or SSH CLI session. Therefore, even though the word all broadens the VTY ' s permitted terminal access protocols, it does not mean that FTP users log in through those five VTY interfaces. Huawei troubleshooting documentation specifically treats protocol inbound all as satisfying Telnet and SSH access requirements. The statement incorrectly groups FTP with the VTY login protocols and claims that all three types of users can use the five VTY interfaces. That conclusion is false. The verified answer is B.
117. Frage
When a Huawei network device functions as an FTP server, which of the following are possible causes of an FTP client failing to log in to the FTP server? (Select all that apply)
Antwort: A,B,C,D
Begründung:
All four options are possible causes of FTP login failure, so the correct answer is A, B, C, and D.
Option A is correct because if the FTP server function is not enabled on the Huawei device, the device cannot provide FTP services and the client cannot log in. Option B is also correct because if the authorized directory is not specified for the FTP user, the user may not be able to complete login or access file services properly, depending on the FTP user configuration requirements. Option C is correct because an FTP user account must be configured with the required username and password; otherwise, authentication cannot succeed. Option D is also correct because if the network between the FTP client and the device is unreachable, the client cannot establish the FTP connection at all.
In HCIA-Datacom troubleshooting, FTP login failure is usually checked from four aspects: service enablement, user configuration, permission or directory authorization, and network connectivity. This question tests standard remote maintenance troubleshooting logic for file transfer services on Huawei network devices.
118. Frage
On the network shown in the figure, S2 serves as a DHCP server and has four address pools, R1 functions as a DHCP relay agent, and S1 is a DHCP client. Which of the following IPv4 addresses can be assigned to S1 through DHCP?
Antwort: A
Begründung:
S1 is a DHCP client and will receive an IP address from the DHCP server S2 via the relay agent R1. The DHCP server has multiple pools, and only the pool matching the client-side network of S1 (192.168.1.0/24) applies. Therefore, the only valid address that can be assigned to S1 must come from the 192.168.1.0/24 subnet. Among the options, only 192.168.1.108/24 belongs to that correct address pool.
119. Frage
The following command output is displayed on R1:
[R1] display aaa configuration
Domain Name Delimiter : @
Domainname parse direction : Left to right
Domainname location : After-delimiter
Administrator user default domain : default_admin
Normal user default domain : default
Domain : total: 256 used: 3
Authentication-scheme : total: 32 used: 2
Accounting-scheme : total: 32 used: 1
Authorization-scheme : total: 32 used: 2
Service-scheme : total: 256 used: 0
Recording-scheme : total: 32 used: 0
Local-user : total: 512 used: 2
Remote-admin-user block retry-interval : 5 Min(s)
Remote-admin-user block retry-time : 3
Remote-admin-user block time : 5 Min(s)
Session timeout invalid enable : No
Which of the following statements is false?
Antwort: D
Begründung:
Comprehensive and Detailed 150 to 200 words of Explanation From Datacom knowledge:
The false statement is B . From the AAA configuration output, the value of Remote-admin-user block time is clearly shown as 5 Min(s) , which means the account lockout duration is 5 minutes , not 30 minutes.
Option A is true because Remote-admin-user block retry-time : 3 indicates that after 3 consecutive authentication failures , the account will be blocked. Option C is also true because the displayed Domain Name Delimiter is @ , which is the separator used in usernames such as user@huawei.com. Option D is true as well because the output shows Local-user : total: 512 used: 2 , meaning that the device supports a maximum of 512 local users , and currently 2 local users have been created.
This question checks the ability to correctly read AAA configuration output on Huawei devices. In HCIA- Datacom knowledge, it is important to distinguish between retry interval , retry count , and block time , because these values represent different security control parameters and are often confused during troubleshooting or configuration review.
120. Frage
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