type of program scans networks for vulnerabilities in the security of that network. If there is a vulnerability with the security of the network, it will send a report back to a hacker who may use this info to exploit that network glitch to gain entry to the network or for other malicious activities. Ethical hackers often also use the information to remove the glitches and strengthen their network.

Network Enumerator or Scanner

Explanation: Network Enumerator or Scanner is a computer  software program in which user names, information, machine names,  network services resources can be extracted. Hackers make connections to target networks,  When there is a lag or vulnerability of such targeted networks, the hacker receives signals and scanning through the  remote network hosts , can be able to gain access to information and use for malicious acts such as  exploitation.

answer(igmp);

answerdestination end device address;