It uses a pseudorandom permutation list of IP addresses to find new vulnerable machines

It uses a pseudorandom permutation list of IP addresses to find new vulnerable machines

• A. Random Scanning
• B. Central Source Propagation
• C. Permutation Scanning
• D. Autonomous Propagation

Answer: (C)

This tests how a worm or automated scanner propagates by exploring the IP space in a systematic way. A pseudorandom permutation list means the device uses a predetermined ordering of all IP addresses that looks random but is actually a complete permutation of the address space. By following this permutation, every address is attempted once in a sweep, which gives uniform coverage without repeating hosts too soon. This makes the search for new vulnerable machines efficient and stealthier, since there’s no wasted effort from hitting the same addresses repeatedly. Random scanning wouldn't guarantee a non-repeating, full sweep and can waste time on duplicates. Central source propagation implies a central controller directing the spread, not a local permutation of targets. Autonomous propagation is a general term for self-propagated spread without specifying how targets are chosen, whereas the key idea here is the orderly, all-encompassing target order provided by a permutation.

This tests how a worm or automated scanner propagates by exploring the IP space in a systematic way. A pseudorandom permutation list means the device uses a predetermined ordering of all IP addresses that looks random but is actually a complete permutation of the address space. By following this permutation, every address is attempted once in a sweep, which gives uniform coverage without repeating hosts too soon. This makes the search for new vulnerable machines efficient and stealthier, since there’s no wasted effort from hitting the same addresses repeatedly.

Random scanning wouldn't guarantee a non-repeating, full sweep and can waste time on duplicates. Central source propagation implies a central controller directing the spread, not a local permutation of targets. Autonomous propagation is a general term for self-propagated spread without specifying how targets are chosen, whereas the key idea here is the orderly, all-encompassing target order provided by a permutation.