Which of the following is a continuous-time signal?

• A digital audio signal

• A square wave signal

• A sine wave signal

• A signal with discrete values at specific time instances

Which of the following signals is classified as a discrete-time signal?

• Analog signal

• A signal defined for all values of time

• A signal that exists only at specific time intervals

• A sinusoidal signal

A signal that is non-periodic in nature and has no repeating pattern is known as:

• Periodic signal

• Aperiodic signal

• Deterministic signal

• Random signal

Which of the following is an example of a periodic signal?

• White noise

• Temperature of a city over time

• A sine wave

• Stock market price chart

A signal that has a well-defined mathematical expression for all values of time is called:

• Random signal

• Deterministic signal

• Periodic signal

• Analog signal

A signal that varies randomly and cannot be predicted is known as:

• Deterministic signal

• Aperiodic signal

• Random signal

• Continuous-time signal

Which type of signal is most commonly represented by a sequence of numbers or digital data?

• Continuous-time signal

• Analog signal

• Discrete-time signal

• Mixed signal

Which of the following types of signals can be both continuous in time and discrete in value?

• Continuous-time signal

• Discrete-time signal

• Analog signal

• Hybrid signal

A signal whose amplitude remains bounded and varies in a regular pattern over time is:

• Periodic and deterministic

• Aperiodic and deterministic

• Random

• Analog

The classification of signals as even or odd is based on:

• The symmetry of the signal in time

• The amplitude of the signal

• The frequency of the signal

• The signal's duration