Category 1
What is the primary function of an encoder in a communication system?
To convert information into a coded format
Radio waves are an example of what type of transmission?
Transmission medium
Which type of lowe energy wave allows wireless communication over long distances?
Radio waves
What type of magnet can have its magnetic properties turned on and off?
Electromagnet
What is the region around a magnet where magnetic forces can be detected called?
Magnetic field
What role does the receiver play in a communication system?
Collects and processes incoming signals
Fiber optic cables transmit information throug what type of signals?
Light signals
Which component ensures secure transmission of sensitive information?
Encryption
What is the region around a magnet where magnetic forces can be detected called?
Magnetic field
What device converts electrical energy into sound energy?
Speaker
What component is responsible for converting encoded messages back to their original form?
Decoder
Which component initiates the communication process?
Source
How do fiber optic cables compare to traditional copper wires?
They transmit data faster
What happens when two like poles of magnets are brought close together?
They attract each other
How does electrical current flow in a circuit?
In a complete path
What is the main purpose of encryption in communication systems?
To protect information from unauthorized access
The Internet primarily functions as what type of network?
Global communication network
In a communication system, data flows from the source to the?
Destination
Which component is essential for creating an electromagnet?
An electrical current
What happens when opposite poles of magnets are brought together?
They attract each other
Which of these is an example of a modern storage device in communication systems?
Hard drives
What happens at the destination in a communication system?
The message is received and understood
The primary purpose of storage in communication systems is to preserve what?
Preserve information
In a simple circuit, what provides the electrical energy?
The battery
Which material is commonly used in the core of an electromagnet?
Iron