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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Security and Services | 15% | - ACL, NAT principles and configuration - AAA and basic security technologies - DHCP, DNS, FTP, Telnet services |
| Topic 2: IP Technology Basics | 25% | - IPv4 addressing, subnetting - IP routing basics and forwarding - Static routing, OSPF fundamentals - IPv6 basics |
| Topic 3: Ethernet Technology Basics | 20% | - VLAN, STP, RSTP principles and configuration - Link aggregation and stacking technologies - Ethernet standards and switch principles |
| Topic 4: Data Center Network Basics | 5% | - Data center architecture overview - Basic data center networking technologies |
| Topic 5: Data Communication Network Basics | 10% | - ARP, TCP/UDP principles - OSI and TCP/IP protocol models - Campus network basics - Data forwarding process - Basic network concepts and architecture - VRP system basics and operations |
| Topic 6: Typical Campus Networking Solution | 5% | - End-to-end networking scenarios - Campus network design and integration |
| Topic 7: Network O&M and Troubleshooting | 10% | - Fault diagnosis and troubleshooting methods - Network monitoring and management tools |
| Topic 8: WLAN Technology Basics | 10% | - 802.11 standards and WLAN components - WLAN architecture and working principles - Basic WLAN configuration |
>> Valid H12-811_V2.0 Exam Topics <<
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NEW QUESTION # 49
The figure shows the simplified topology of an enterprise campus network. On this network, the aging time of dynamic MAC address entries on switches is 300 seconds. Employee A uses PC1 to connect to the GE1/0/1 port of the switch and continuously communicates with PC3 for 10 minutes. After that, the employee disconnects the network cable and leaves the workstation. Subsequently, PC4 continues to communicate with PC3. After 30 minutes, employee B connects PC2 to GE1/0/1 of SW1, and PC2 ' s ARP cache table is empty.
At this point, when SW1 receives an ARP request from PC2, it will search the MAC address table and forward the request packet only through GE1/0/3.
Answer: B
Explanation:
An ARP Request is carried in an Ethernet broadcast frame whose destination MAC address is FF-FF-FF-FF- FF-FF. When SW1 receives the ARP Request from PC2, it does not look up a single destination MAC entry and send the frame only toward PC3. Instead, the switch floods the broadcast frame through all other eligible ports in the same VLAN, excluding the ingress port. The 300-second MAC aging time reinforces why the earlier PC1 entry is not relevant after 30 minutes: a dynamic entry that is not refreshed will age out long before PC2 is connected. PC4 ' s continued communication with PC3 may refresh MAC entries associated with that traffic, but it does not transform PC2 ' s ARP Request into a known unicast frame. ARP relies on broadcast precisely because the sender does not yet know the target ' s Layer 2 address. Therefore, the claim that SW1 forwards the request only through GE1/0/3 is incorrect. The verified answer is FALSE, option B.
NEW QUESTION # 50
Which of the following commands can be used to check OSPF routes in the global routing table?
Answer: A
Explanation:
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.
NEW QUESTION # 51
When a Huawei device functions as an SSH client to log in to another network device for the first time, the ssh client first-time enable command must be run to enable the first-time login function of the SSH client.
Otherwise, the login fails.
Answer: B
Explanation:
The HCIA-Datacom V2.0 Training Material describes the configuration of Huawei devices operating as SSH clients.
For the first-time-login workflow, the command ssh client first-time enable enables the SSH client to establish its initial connection with an SSH server whose host public key has not already been trusted.
SSH provides authentication, encryption, and integrity protection to secure remote management traffic.
During initial connection establishment, the SSH client must handle the server ' s host public key to establish trust.
The first-time-login function permits this initial trust-establishment process. Without it, a connection to a server whose host key has not been provisioned may fail.
The training material explicitly includes this command in its SSH client configuration procedure.
Therefore, within the first-time-login configuration scenario described in the question, the statement is TRUE.
NEW QUESTION # 52
FILL BLANK
On the network shown in the figure, it is required that interfaces on R1 and R3 are reachable to each other through static routes. When implementing this requirement, there is no need to configure static routes on _____. (Enter a device name in the figure, for example, R1.)
Answer:
Explanation:
R2
Explanation:
R1 and R3 are not directly connected, so each of them requires a static route pointing to the next hop through R2 to reach the remote network. However, R2 has both networks (10.0.0.0/24 and
20.1.1.0/24) directly connected on its interfaces, so it already has routes to both sides in its routing table. Therefore, no static route configuration is required on R2.
NEW QUESTION # 53
On the network shown in the figure, the administrator creates Eth-Trunk 1 in manual mode on SW1 and SW2, adds GE1/0/1 and GE1/0/2 on both switches to the Eth-Trunk 1, and sets the traffic forwarding mode to per- packet load balancing. However, the administrator finds that traffic from VLAN 10 cannot be forwarded, while traffic from VLAN 20 can be forwarded normally. The administrator verifies that the configuration of SW1 is correct. Which of the following statements are false about this fault scenario? (Select all that apply)
Answer: B,C,D
Explanation:
An Eth-Trunk combines multiple physical interfaces into one logical interface. VLAN permissions are configured on the logical Eth-Trunk rather than independently on individual member interfaces.
Option B describes a possible cause because SW2 may not permit VLAN 10 on Eth-Trunk 1, even though VLAN 20 is permitted.
Option A does not adequately explain the VLAN-specific failure. A failed member link would affect traffic distribution across the aggregated connection rather than inherently block only VLAN 10.
Option C is also inconsistent with normal VLAN 20 forwarding because incompatible aggregation modes could prevent the logical connection from operating correctly.
Option D is false because Eth-Trunk member interfaces do not independently control VLAN forwarding permissions.
Therefore, A, C, and D are the false explanations of the described fault.
NEW QUESTION # 54
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