Which of the following statements best describes data hiding?
A. Mechanism used to ensure that information available at one processing level is not available at another level.
B. A process operation that is divided into layers by function.
C. The process of segmenting the memory into protected segments.
D. A design objective in which each process has its own address space.
Answer: A
Explanation: Data hiding is a mechanism where information available at one level is not available at another. A process isolation is when each process has its own address space to store its data and application code. Hardware segmentation is the process of segmenting memory into protected segments. Layering is a process operation that is divided into layers by function.
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If you are hired as an entry-level programmer, your job title would typically be a(n) ___________ programmer.
Fill in the blank(s) with the appropriate word(s).
Match each item with a statement below.
A. Command option used to remove a specified member from the group account. B. Command option used to specify the user's default login shell. C. Command option used to allow assignment of a duplicate GID. D. Command option used to change the user's login name. E. Command option used to force the GID to what's entered at the command line. F. Command option used to unlock specific user accounts. G. Command option used to add a home directory for a new user. H. Command option used to display all password expiration information for the specified user account. I. Command option used to change the number of days the password is valid for the specified user account.