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| Section | Objectives |
|---|---|
| Topic 1: Routing Technologies | - Static routing - Dynamic routing fundamentals (OSPF basics) |
| Topic 2: Network Fundamentals | - Basic network topologies and devices - OSI and TCP/IP models |
| Topic 3: IP Services | - DHCP and DNS concepts - NAT basics |
| Topic 4: Switching Technologies | - STP/RSTP concepts - VLAN configuration and trunking |
| Topic 5: IP Addressing and Subnetting | - IPv4 addressing and subnet masks - IPv6 fundamentals |
| Topic 6: Network Management and Troubleshooting | - Basic troubleshooting tools and methods - Device management concepts |
| Topic 7: WLAN Basics | - Wireless networking fundamentals |
| Topic 8: Network Security Basics | - Basic network security concepts - Access control lists (ACL) |
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問題 #63
When Telnet or the web system is used to manage a device, which of the following mechanisms can be deployed to allow only fixed user IP addresses to log in to the device?
答案：C
解題說明：
An Access Control List (ACL) can filter packets based on specified matching conditions, including source and destination IP addresses.
Huawei ' s HCIA-Datacom training material explains that ACLs provide traffic classification and access- control capabilities.
To restrict remote management access, an administrator can configure ACL rules that permit connections originating from authorized management IP addresses and deny connections from other sources.
The ACL must be applied to the appropriate management service or user interface for the restrictions to take effect.
Option A is incorrect because telemetry is primarily used for collecting and reporting operational data.
Option C is incorrect because SNMP is designed for network monitoring and management rather than implementing the specified login-source filtering mechanism.
Option D provides authentication, authorization, and accounting, but it is not the direct mechanism requested for filtering specific source IP addresses.
Therefore, option B is correct.
問題 #64
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)
答案：A,B,C
解題說明：
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.
問題 #65
In the figure, a web client sends an HTTP request to a web server, and the router in between performs operations on the HTTP request. Which of the following statements are false about the router's operations? (Select all that apply)
答案：A,B,C
解題說明：
A router works mainly at the network layer. When it receives a frame, it removes the Layer 2 header and trailer, examines the destination IP address in the Layer 3 header, consults the routing table, selects the outgoing interface, and then re-encapsulates the packet into a new Layer 2 frame for the next hop. Therefore, statement B is true and is not part of the answer.
Statement A is false because the router does not create a new destination IP address during normal forwarding. The source and destination IP addresses remain unchanged end to end unless special functions such as NAT are used. Statement C is false because routing-table lookup is based on the destination IP address, not on TCP or UDP port numbers. Statement D is also false because normal IP routing does not inspect application-layer content to determine the outgoing interface. That decision is made from the network-layer destination address and the routing table. This question tests the layered forwarding logic of routers in TCP/IP networks.
問題 #66
On a switched network, the administrator has completed the VLAN-related configuration shown in the figure on SW1. If the administrator runs the ping 192.168.1.2 command on PC1, the ping will fail.
答案：A
解題說明：
Both switch ports shown in the exhibit are configured as trunk ports and VLAN 10 is permitted, but the configuration does not change the trunk PVID from its default value of VLAN 1. On Huawei switches, untagged frames received on a trunk interface are associated with the interface PVID. A normal PC sends untagged Ethernet frames, so traffic from both PC1 and PC2 is classified into VLAN 1. VLAN 1 is permitted on a trunk by default unless it is explicitly removed with an undo port trunk allow-pass vlan 1 command. As a result, the two PCs remain in the same Layer 2 broadcast domain through VLAN 1 and can exchange ARP and ICMP traffic. Merely adding VLAN 10 to the allowed VLAN list does not force untagged host traffic into VLAN 10. Therefore, the statement that pinging 192.168.1.2 from PC1 must fail is incorrect. The correct response is FALSE, option B.
問題 #67
Which of the following commands can be used to check OSPF routes in the global routing table?
答案：C
解題說明：
To check OSPF-learned routes in the global IP routing table, the correct command is display ip routing-table protocol ospf, so option A is correct. This command filters the routing table and shows only the routes whose source protocol is OSPF. It is especially useful when verifying whether OSPF-learned routes have been successfully installed into the forwarding table after neighbor establishment and LSDB calculation.
問題 #68
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H12-811_V2.0 考古題覆蓋了最新的考試指南，確保考生一次性通過 H12-811_V2.0 考試。Huawei 認證專家根據 H12-811_V2.0 考試主題編訂，適合全球的考生使用，提高考生的通過率。HCIA-Datacom 是一張高級網路專家認可證書，亦是全球公認的專業認證。H12-811_V2.0 認證主要的目的是讓網路工程師能在現今變化迅速的資訊網路環境中，都能掌握和擁有最先進的網路技術，任何時候都能保持領導地位。
新版H12-811_V2.0題庫: https://www.vcesoft.com/H12-811_V2.0-pdf.html