Which of the following network attacks takes advantage of weaknesses in the fragment reassembly functionality of the TCP/IP protocol stack?

Teardrop is a classic IP fragmentation attack that sends IP fragments with overlapping offset values. When the target system attempts to reassemble these malformed fragments, the overlap causes the reassembly algorithm to fail, often resulting in a system crash or freeze. This directly targets the weakness in the TCP/IP stack's fragment reassembly functionality.

A SYN flood exploits the TCP three-way handshake by sending large volumes of SYN packets without completing the connection, exhausting server resources - not related to fragment reassembly.

A Smurf attack amplifies ICMP echo requests by broadcasting them with a spoofed source IP to flood the victim, which is unrelated to IP fragmentation.

The Ping of Death sends an oversized ICMP packet that exceeds the maximum legal size, crashing the target on receipt - it targets packet size limits, not fragment reassembly logic.