Operating systems come packaged with many digital certificates from certificate authorities (CAs). Use the Internet to determine how to view the CAs for the type and version of operating system that you are using and view the list. How many have you heard of? How many are unknown? Select three of the publishers and research their organizations on the Internet. Write a one-paragraph summary of each CA.

Big is the synonym for gigantic so c is the correct answer hope this

Solution: the categorization of functional and non-functional requirement are as follows: some of the more typical functional requirements include: • business rules• transaction corrections, adjustments and cancellations• administrative functions• authentication• authorization levels• audit tracking• external interfaces• certification requirements• reporting requirements• historical data• legal or regulatory requirementswhile,some typical non-functional requirements are: • performance – for example response time, throughput, utilization, static volumetric• scalability• capacity• availability• reliability• recoverability• maintainability• serviceability• security• regulatory• manageability• environmental• data integrity• usability• interoperability