Buffering in I/O is used to :. a. All of the other answers.
b. support copy semantics for application I/O.
c. provide adaptations for devices that have different data-transfer sizes.
d. cope with a speed mismatch between the producer and consumer of a data stream.

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

Ithink it is a thermometer.

Don’t know sorry if i know it later i would put it here

Answer (c) worn brakes pads;