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Which of the following packets is used by network devices running SNMPv1 to proactively send alarm information?
SNMPv1 uses Trap messages to send unsolicited notifications about network events (e.g., failures, threshold breaches).
Response (A): Sent as a reply to SNMP queries, not proactively.
Get-Next Request (C) and Get-Request (D): These are polling requests, not proactive alarms.
Thus, the correct answer is B (Trap).
You can run the user-interface maximum-vty command to configure the maximum number of users who can log in to the device through Telnet simultaneously.
Comprehensive Explanation= The user-interface maximum-vty command is used on Huawei devices to configure the maximum number of simultaneous VTY (Virtual Terminal Line) users who can log in via Telnet. By limiting the number of VTY sessions, the administrator can control how many users are able to access the device at the same time, preventing excessive connections that may overwhelm the device or reduce security.
Assuming all STP enabled switches have the same bridge priority. The MAC address of switch A is 00-e0-fc-00-00-40, the MAC address of switch B is 00-e0-fc-00-00-10, the MAC address of switch C is 00-e0-fc-00-00-20, and the MAC address of switch D is 00-e0-fc-00-00-80. Which switch will be elected as the root switch?
When bridge priorities are identical, STP elects the switch with the lowest MAC address as the root. Here, Switch B has the lowest MAC address (00-e0-fc-00-00-10), making it the root switch. (Reference: HCIA-Datacom Training Material, STP Root Bridge Election)
Which of the following is not a common device deployed on a data communication network?
Switch (A): A network switch is a fundamental device used to connect devices in a local area network (LAN) and forward packets based on MAC addresses.
Firewall (B): A firewall is used to filter and protect the network from unauthorized access and threats.
Router (D): A router is essential for forwarding packets between different networks and managing routing.
Agile Controller (C): This is a network automation and management tool rather than a fundamental networking device. Since it is not typically deployed as a core network device, option C is the correct answer.
In the following figure, all links are Ethernet links, and all interfaces on the routers are running OSPF. Given this, how many DRs will be elected on this network?
In OSPF networks, a DR (Designated Router) is elected for each broadcast domain, such as each Ethernet segment. Given the topology where there are multiple Ethernet segments, a DR will be elected in each segment, resulting in three DRs based on the configuration and network design.
