Question

Both analog and digital signals are used to transfer information. The table compares the features of each. Analog Digital Wave Type Signal continuous, or "curvy", changes with time individually separate, or "box-like", also known as binary Uses cassette tapes, videotapes, record players, older cameras compact disks (CDs), digital video disks (DVDs), digital photos, cell phones Power Requirement higher, because of wide range of amplitudes and frequencies lower, because only two signals (the "one" and the "zero") are transmitted Storage degrades in quality with age and re-recordings quality remains the same over time Security lower, because tapping into an analog circuit can detect signals in their original form higher, since binary systems are easier to change to a secret code—known as encryption Images courtesy of NASA 4 Select the correct answer from each drop-down menu. Based on the information in the table, what type of signal is being transmitted and received in the image below? graph of transmitted signal in red and received signal in blue; the amplitude of the received signal is higher in some places and lower in others than the amplitude of the transmitted signal The image shows transmission of signal because there is of the transmitted signal. Transferring information using this type of signal requires .

Answer 1

The signal represented in the image is an analog signal, which shows varying continuous amplitudes known for requiring more power to transfer information compared to more efficient and secure digital signals.

Step-by-step explanation:

The signal depicted in the image is an analog signal because it shows continuous, varying amplitudes over time, resembling the description of analog signals as continuous or 'curvy'. Analog signals are characterized by the capability to vary continuously, unlike the digital signals that consist of binary ones and zeros and exhibit a box-like, discrete form. The graph indicating the discrepancy between the transmitted and received signal amplitudes suggests that information is transferred using a signal that can vary in amplitude, which aligns with the nature of analog signals. Transferring information using this type of signal requires more power than digital signals because analog must handle a wider amplitude and frequency range. Nevertheless, digital signals are preferred in modern communication devices such as cell phones and computers because they maintain quality over time, require less power, and provide enhanced security through encryption.