This technique is based on searching for a fixed sequence of bytes in a single packet Group of answer choices Protocol Decode-based Analysis Heuristic-based Analysis Anomaly-based Analysis Pattern Matching

"Pattern Matching" is the correct choice.

Explanation:

The other choices don't apply to the specified instance. So that the choice above seems to be the right one.

given the options, i would say your best bet is c. the modem supports up to 56 kbps, which is too low for video streaming. dial up modems use actual phone lines, which only can go up to 56 kbps as that's more than sufficient for traditional phone calls. this is also the reason why when a dial-up modem connects, you hear all those sounds. it's literally using the phone line to establish a connection.