Answer: Layout
Explanation: Layout is the basic interface design between the flow in a system that is in compact form so that user can access it easily. It also manages the flow of the interface pattern in whichever direction( top, left, bottom, right ) accordingly in minimal way. It also lets the user take the control over the panel interface that are in the display or may be hidden form.
Answer: b. actuator
Explanation:
We know that a RW head ( or also known as read/write head) is a component of device which is usually appeared on the hard drive which is used to read and write data by the hard drive's disk . When data required to be read or write, the read/write arm is regulated by actuator.
[An actuator is a part of a device that is mainly responsible for moving and controlling a mechanism or system.]
Hence, All the read/write heads a hard disk are controlled by an actuator .
Printer,speaker,head phones,monitor
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