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The video tutorial introduces the concept of broadcast shadow and explains the significance of 40 mil in this context.

What is the significance of a low signal level in communication systems?

• It indicates a strong signal.

• It means the signal is stable.

• It suggests a weak signal.

• It shows the signal is encrypted.

What does the term 'broadcast shadow' refer to?

• A way to boost signal strength.

• A type of signal interference.

• A method of signal amplification.

• A technique for signal encryption.

How does broadcast shadow affect signal transmission?

• It enhances the signal quality.

• It stabilizes the signal frequency.

• It blocks or weakens the signal.

• It encrypts the signal data.

Why is understanding broadcast shadow important in communication?

• To increase signal speed.

• To prevent signal interference.

• To enhance signal clarity.

• To improve signal encryption.

What could '40 mil' refer to in the context of measurements?

• A unit of frequency.

• A unit of signal strength.

• A unit of distance.

• A unit of time.