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>> Huawei H12-811_V2.0 Valid Exam Notes <<
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NEW QUESTION # 103
What is the broadcast address of the network that contains a host with IP address 192.168.1.147/28?
Answer: B
Explanation:
A /28 subnet mask corresponds to 255.255.255.240, which means each subnet contains 16 IP addresses . The subnet boundaries in the last octet increase in steps of 16: 0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, and so on. The host address 192.168.1.147 falls within the subnet range 192.168.1.144 to 192.168.1.159 .
In that subnet, the network address is 192.168.1.144, the usable host range is 192.168.1.145 through
192.168.1.158, and the broadcast address is 192.168.1.159. Therefore, option C is correct. Option D is the first usable host address, not the broadcast address. Option A is just another usable host address. Option B would be the broadcast address only for a /24 network, not for a /28. HCIA-Datacom requires learners to master subnetting because it is essential for IP planning, gateway deployment, route summarization, and troubleshooting Layer 3 communication issues in campus and enterprise networks.
NEW QUESTION # 104
Each host has its own network interface card (NIC). Each NIC is assigned a globally unique MAC address during manufacturing. Which of the following is a valid MAC address for a host's NIC?
Answer: A
NEW QUESTION # 105
Which of the following SNMP messages is sent unsolicited to the NMS by a managed device to report some urgent and significant events (such as a restart of the managed device)?
Answer: B
Explanation:
In SNMP, a Trap message is sent asynchronously and unsolicited from a managed device to the NMS to report important or urgent events such as device restart, link failures, or threshold alarms.
It does not require a response from the NMS, unlike Inform messages.
NEW QUESTION # 106
There are several distinct topologies for data communication networks. Which of the following network topologies presents the risk of network-wide communication breakdown in the case of a single device fault?
Answer: D
Explanation:
In a ring topology, each device is connected in a closed loop, so data travels through each node in sequence. If a single device or link fails, it can interrupt the entire loop and break communication across the network unless redundancy mechanisms are in place.
NEW QUESTION # 107
Drag and Drop Question
On the network shown in the figure, the administrator creates an Eth-Trunk between SW1 and SW2 to increase link bandwidth and enable terminals in VLAN 10 and VLAN 20 to communicate with each other. When the network is running, the administrator encounters network problems.
Match the problems with the troubleshooting methods.
Answer:
Explanation:
Explanation:
GE1/0/3 added to the Eth-Trunk is always in Down state. -> Run the display interface brief command to check the status and error statistics of physical interfaces.
The traffic sent from PC1 cannot reach PC3 after passing through the Eth-Trunk. -> Check whether the lists of allowed VLANs on the Eth-Trunk interfaces at both ends are the same.
The Eth-Trunk cannot be established between the two devices. -> Check whether the aggregation modes at both ends of the Eth-Trunk match.
Physical Interface Down: When a single member port (GE1/0/3) fails to come up within the trunk, the immediate first step is checking the physical layer and link-layer protocol status using display interface brief to rule out hardware, cable, or transceiver errors.
VLAN Reachability Issues: If the Eth-Trunk trunk link is successfully built but specific traffic (like PC1 in VLAN 10 to PC3 in VLAN 10) fails to traverse across, it points directly to misconfigured VLAN permissions (e.g., forgetting to allow VLAN 10 on the Eth-Trunk trunk port configuration).
Trunk Establishment Failure: If the logical Eth-Trunk interface itself cannot form, it is typically due to a mismatch in foundational parameters-most notably, one side being configured in standard manual load-balancing mode while the other is using dynamic LACP mode.
NEW QUESTION # 108
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