A hacker, who posed as a heating and air conditioning specialist, was able to install a sniffer program in a switched environment network. Which attack could the hacker use to sniff all of the…

A Fraggle attack is a DDoS amplification attack that sends UDP packets to broadcast addresses to flood a target with reflected traffic, not a technique for passively capturing network packets.

A MAC Flood attack sends thousands of spoofed MAC addresses to the switch's Content Addressable Memory (CAM) table, exhausting its capacity. When the table is full, the switch enters fail-open mode and broadcasts all frames to every port, effectively converting it to a hub. This allows the attacker's sniffer to capture all traffic on the network segment.

A Smurf attack is a DDoS amplification attack that floods a target with ICMP echo replies by spoofing the victim's IP to a broadcast address, not a method for sniffing network traffic.

A Tear Drop attack exploits IP fragmentation by sending malformed overlapping packet fragments to crash a target host, and has no capability for capturing or sniffing network traffic.