Final answer:
The subject of this question is Computers and Technology, and it is about a nonintrusive network scan that is least likely to be detected by an IDS or IPS device.
Step-by-step explanation:
The subject of this question is Computers and Technology and the grade level is High School.
The question is asking about a specific type of network scan that uses nonintrusive mechanisms to map out every system on the target network and is least likely to be detected by an IDS or IPS device.
For example, a ping scan is a type of scan that sends a series of ICMP echo requests to IP addresses on the network to check if they are alive, without interacting further with the systems. This type of scan is considered nonintrusive and may go undetected by an IDS or IPS device.
The student's question pertains to a network scanning technique used in cybersecurity which involves mapping out every system on a target network with minimal intrusion. This is referred to as network enumeration or scanning. The method described, likely utilizing a tool or command such as ping, is designed to be nonintrusive and avoid detection by Intrusion Detection Systems (IDS) or Intrusion Prevention Systems (IPS). While there are various scanning techniques, the one mentioned is characterized by its stealth and the low chance of triggering security alarms. The goal of such scanning is to gather information about the network structure, the hosts available, and the services they offer without causing any alert which could be picked up by security systems.