Securing computer architecture involves three rings of protection. What is in each ring? Provide examples
What will be an ideal response?
Answer:
Ring 3: Software applications include Web browser, word processing, spreadsheet, and accounting software. Login passwords to open applications are an example of Ring 3 protection.
Ring 2: Input/output drivers are programs that access input and output devices, such as printers or disks. Utilities include RDBMS for accessing a relational database. An example of Ring 2 protection would be to require a password to access a data file.
Ring 1: Operating systems, such as Unix, are programs running computer hardware. Ring 1 protection might consist of limiting access to operating system commands based on the security level of the user.
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What will be an ideal response?
Nearly 100% of the observed occurrences of a random variable x that is normally distributed will
fall within three standard deviations of the mean of the distribution of x. A) True B) False