_______ data are continuous and take continuous values.

Data can flow only in one direction all of the times is called a ______ connection.

A simple sine wave can be represented by one single spike in the _____ domain.

In a _____________ communication, the media is dedicated.

Data can flow only in both direction all the times is called a _________ connection.

Baseband transmission of a digital signal is possible only if we have a ____ channel.

Assume a system uses five protocol layers. If the application program creates a message of 100 bytes and each layer (including the fifth and the first) adds a header of 10 bytes to the data unit, what is the efficiency (the ratio of application-layer bytes to the number of bytes transmitted) of the system?

Transmission media lie below the _______ layer.

Which of the following is not a guided medium?

Noise in a coaxial cable is reduced by ___________________.