Question

what do you understand by network security?

Answer 1

Answer:

Network security consists of the policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. ... Networks can be private, such as within a company, and others which might be open to public access.

Explanation:

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Answer 2

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national security is often understood as the capacity of a nation to mobilise military forces to guarantee its borders and to deter or successfully defend against physical threats including military aggression and attacks by non-state actors, such as terrorism.✌✌