Questions

When a program forks and the child finishes before the parent, the kernel still keeps some of its information about the child in case the parent might need it – for example, the parent may need to check the child’s exit status. To be able to get this information, the parent calls `wait()’; In the interval between the child terminating and the parent calling `wait()’, the child is said to be a `zombie’ (If you do `ps’, the child will have a `Z’ in its status field to indicate this.)

A computer program is a set of instructions i.e algorithm that are to be executed to complete a task.

Hubs regenerate electrical signals, which are specified at the Physical layer.

Tehri Dam on Bhagirathi River in Uttarakhand (Height of 260 meters)

Hair grows everywhere on the skin except palms, sole of feet and lips on the human body. Hair is modified type of skin.