What are the different kinds of layers that can be placed between an asset and unsecure network

Topic: What is the concept of depth? What are the different kinds of layers that can be placed between an asset and unsecure network?

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Need minimum 300 words

Need 3 APA references

Topic: Is simply hiding vulnerabilities and other system architecture information a solid method of defense? What methods would you suggest?

Instructions:

Need minimum 300 words

Need 3 APA References