List two countermeasures $($each$)$ utilized to protect the fundamental IT principles below. Describe any challenges and$/$or short falls of implementing these controls.

Confidentiality

Integrity

Availability

What are different security layers utilized in the Defense in Depth concept? What role do each of these layers play in protecting a SoI from cyber attacks?

Describe the relationship between obsolescence and hardware$/$software assurance. What methods can System Engineers take to reduce cyber vulnerabilities created by these obsolescence and hardware$/$software assurance?

Summarize answer in three paragraphs