network security, communications homework help

The layered-security approach centers on maintaining appropriate security measures and procedures at five different levels within an IT infrastructure:

Perimeter? (write one paragraph)

Network? (write one paragraph)

Host? (write one paragraph)

Application? (write one paragraph)

Data? (write one paragraph)

The layered security model? (explain three model)

Notes: the similarity should be not more 7 % shoudl be by Harvard stile.

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