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Comprehensive Explanation: A routing table contains information necessary for the router to determine the best path to forward packets. This includes the destination network or subnet (Destination/Mask), the next-hop address (the IP address of the next device in the path), and the cost (metric) associated with the route. MAC addresses are used at the Data Link layer (Layer 2) for local network communication and are not part of the routing table, which operates at the Network layer (Layer 3).

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).

B (Correct) - HTTP: Uses TCP port 80 for web traffic.

C (Correct) - FTP: Uses TCP ports 20/21 for file transfer.

A (Incorrect) - TFTP: Uses UDP port 69, not TCP.

D (Incorrect) - Ping: Uses ICMP, which is neither TCP nor UDP.

Thus, the correct answers are B and C.