This Toy Can Open Any Garage

What type of electromagnetic wave technology is commonly used to open garage doors remotely?

• Infrared

• Bluetooth

• Radio Frequency

• Wi-Fi

What does the acronym ISM stand for in the context of radio bands used by devices like garage door remotes?

• Industrial Scientific Medical

• International Standard Measurement

• Integrated System Management

• Information Security Module

What is the name of the signal modulation technique where data is represented by varying the amplitude of a carrier wave, often by turning it "on" or "off"?

• Frequency Modulation (FM)

• Phase Modulation (PM)

• Amplitude Shift Keying (ASK)

• Digital Modulation (DM)

If a garage door opener uses an 8-bit code, how many unique possible combinations are there for that code?

• 8

• 16

• 128

• 256

What is the approximate percentage reduction in the number of bits needed to cover all 8-bit combinations when using a De Bruijn sequence compared to sending each combination individually?

• 10%

• 50%

• 90%

• 100%

What feature of the IM-me toy makes it useful for communicating with devices like garage door openers and cars?

• Its bright pink color

• Its built-in camera

• A microcontroller with a wide-frequency transceiver

• Its ability to connect to the internet

How do rolling codes make garage door openers more secure than fixed codes?

• They use a secret algorithm that is constantly changing.

• They generate a new, pseudo-random code each time based on a secret seed.

• They require a fingerprint scan to operate.

• They transmit codes over a wired connection.

In a "rolljam" attack on a rolling code system, what is the first action an attacker takes when a legitimate signal is detected?

• Immediately replays the detected code to open the device.

• Jams the signal and records the code.

• Changes the device's internal seed.

• Sends a random code to confuse the device.