WorksheetsMidterm: Introduction to Electronic Communication
Total questions: 21
Worksheet time: 21mins
Who is credited with inventing radio who first discovered radio waves?
Guglielmo Marconi
Heinrich Hertz
Nicola Tesla
James Maxwell
________ is the process of exchanging information.
Communication
Data transfer
Radiology
Transceiver
In electronic communication systems, which of the following is referred to as the intelligent signal or the information?
Message
Data
Transmitter
Receiver
______ is a collection of electronic components and circuits designed to convert the electrical signal to a signal suitable for transmission over a given communication medium.
Receiver
Transmitter
Communication channel
Information
_____ is the general term applied to any phenomenon that degrades or interferes with the transmitted information.
Oscillator
Noise
Interference
Frequency
In electronic communication, _____ are circuits/units that incorporate both send and receive functions.
Transmitter
Transceiver
Two-way
Signal attenuation
______, or degradation, is inevitable in electronic communication no matter what the medium of transmission. It is proportional to the square of the distance between the transmitter and receiver.
Noise
Attenuation
Interference
Signal loss
A ____ is a collection of electronic components and circuits that accepts the transmitted message from the channel and converts it nack to a form understandable by humans.
Transmitter
Receiver
Communications channel
Medium
The _____ is the medium by which the electronic signal is sent from one place to another.
Electrical conductors
Communication channel
Oscillator
Modulator
These are widely used today to carry long-distance calls and all internet communications. The information is converted to digital form that can be used to turn a laser diode off and on at high speeds.
Optical media
Wireless communication
WiFi
Local Area Network
The simplest way in which electronic communication is conducted is one-way communications, normally referred to as _____.
Simplex communication
Full Duplex communication
Half Duplex communication
Analog
People communicating with one another over the telephone can talk and listen simultaneously. This is called _____ communication.
Simplex
Half duplex
Full duplex
Digital
In _____ communication, the communication is two-way, but the direction alternates: the communicating parties take turns transmitting and receiving.
Full duplex
Simplex
Half duplex
Analog
______ is a smoothly and continuously varying voltage or current.
Digital signal
Analog signal
AC signal
DC signal
These type of signals do not vary continuously but change in steps or in discrete increments.
Analog signals
Digital signals
Data
Binary
The baseband information signal, be it audio, video, or data, is normally used to modulate a high-frequency signal called a _______.
Modulator
Multiplexer
Carrier
RF wave
______ is the process of having a baseband voice, video, or digital signal modify another, high-frequency signal, the carrier.
Amplification
Modulation
Transmission
Multiplexing
Electromagnetic signals which are able to travel through space for long distances are also referred to as _____ waves.
Radio frequency
Magnetic
Baseband signal
High frequency
_____ is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave.
Amplitude modulation
Frequency modulation
Baseband transmission
Broadband transmission
________ is the process of allowing two or more signals to share the same medium or channel.
Modulation
Multiplexing
Transmission
Amplification
_____ is the process in which the amplitude of the carrier waves varies linearly with message signal.
Amplitude modulation
Frequency modulation
Multiplexing
Transmission
