1. A file is a data structure which consists of a sequence of components of the same type.
2. The number of components in a file is variable.
3. The components in a file can be accessed only sequentially starting from the beginning of the file.

1. Open collector output
2. Totem pole output
3. Tristate output

Assertion (A): In a power divider S_H = 0, S₂₁ = 0.707 = S₃,

Reason (R): In a power divider the input port (i.e., port 1) is matched and incident power is equally divided in output ports 2 and 3