Internet of Things (IoT) Practice Exam

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Morse communication sends characters at a rate less than:

4K bit/second
100 bit/second
20 bit/second
1K bit/second

The correct answer is: 20 bit/second

Morse code communication operates on the basis of sending characters using sequences of dots and dashes, which represent different letters and numbers. The speed of transmitting Morse code is typically measured in terms of “words per minute” (WPM), where experienced operators can send it at rates of around 20 WPM or higher, translating to approximately 60 characters per minute. When considering the transmission rate in bits per second, a common estimation converts WPM to bits by recognizing that each character in Morse code can take a variable amount of time to send. However, the average sending rate of Morse code is found to be significantly lower than many digital communication formats today. The correct answer indicates that Morse code communication sends characters at a rate less than 20 bits per second. This aligns with the practical limits of human-operated Morse communication. While higher speeds like those mentioned in the other choices are technically possible in digital systems, Morse code relies on human operators who have physical and cognitive constraints when transmitting information, thereby making 20 bits per second a more fitting limit for typical Morse code usage.