Describe four types of system maintenance and provide two examples of each type.
What will be an ideal response?
Students can refer to examples shown in Figure 12-4. Instructors might want to try a different approach to this question and ask students to cite an automotive example for each type of maintenance. Sample answers might include the following:
1) Corrective maintenance diagnoses and corrects errors in an operational system. (An automotive example would be replacing a burned out headlight.)
2) Adaptive maintenance involves adding new capability and enhancements to the existing system. (An automotive example would be adding a trailer hitch to your SUV so you can tow your boat.)
3) Perfective maintenance is designed to improve efficiency. (An automotive example would be having a tune-up performed in order to improve gas mileage.)
4) Preventive maintenance is performed to reduce the possibility of future system failure. (An automotive example would be changing your oil every 3,000 miles to avoid engine problems).
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When the connection is created do the TCP sender and TCP receiver negotiate to permit SACKs? Describe the process of the negotiation.
What will be an ideal response?