Which of the following classes is a base class of the other three?

Margot is investigating suspicious activity on her network and uses a protocol analyzer to sniff inbound and outbound traffic. She notices an unusual packet that has identical source and destination IP addresses. What type of attack uses this packet type?

A. Fraggle B. Smurf C. Land D. Teardrop

For a list of length n, the ____________________ sort makes exactly (n(n - 1))/2 key comparisons and 3(n - 1) item assignments.

Fill in the blank(s) with the appropriate word(s).