________ transmission systems have signals that pass through walls but they are susceptible to snooping unless encrypted.

A) Fiber
B) Microwave
C) Radio
D) Satellite

Snooping

involves unauthorized access to another person's or company's data or spying on data traffic in networks to capture sensitive information.

Encryption

The process of converting information or data into a code, especially to prevent unauthorized access.

Radio

A technology that uses radio waves to transmit information, such as audio, by modulation of electromagnetic waves.