Which of the following server types takes up the LEAST amount of space？（）

A. Implement ACLs.
B. Disable accounts for staff members who do not require server access.
C. Implement anti-spam software on the server.
D. Implement anti-virus software on the server.

A. Awareness of company policy requirements
B. Differentiating between archiving and backup processes
C. Awareness of potential legal requirements
D. Ensuring that the backups for the retention program cover key business areas

A. Perform root cause analysis and then test the theory to determine the cause.
B. Make changes to the system and document everything once the problem is resolved.
C. Make multiple changes to all affected areas to resolve all potential issues.
D. Make a change and if the problem is not resolved， reverse the change.