FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Defense in depth, or layered security, involves the use of multiple types of network hardware within a network. Security is enhanced by subnetting a single network into multiple smaller subnets in order to isolate groups of hosts.

Detailed explanation-2: -At its core, defense-in-depth is a protection mechanism for network security–an approach that involves layering or using multiple controls in series to protect against possible threats. This layered concept provides multiple redundancies in the event systems and data are compromised.

Detailed explanation-3: -Defense in Depth (DiD) refers to an information security approach in which a series of security mechanisms and controls are thoughtfully layered throughout a computer network to protect the confidentiality, integrity, and availability of the network and the data within.

Detailed explanation-4: -Using a layered approach when you plan your Internet security strategy ensures that an attacker who penetrates one layer of defense will be stopped by a subsequent layer. Your security strategy must include measures that provide protection across the following layers of the traditional network computing model.