notice -ch3-210(2) - Chapter3 Data and signals can be...

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Chapter3: Data and signals can be either analog or digital . Analog refers to an entity that is continuous ; Digital refers to an entity that is discrete . The attributes of analog signals such as period , frequency , and phase . only non-periodic digital signals can be used in data communication . T The attributes of a digital signal such as bit rate and bit length. Digital data can be sent using analog signals. T signals can be either analog or digital. T Transmission impairment such as attenuation, distortion, and noise can impair a signal. T The data rate limit: how many bits per second we can send with the available channel. The data rates of noiseless and noisy channels are examined . T Several channel measurements are examined including bandwidth, throughput, latency, and jitter. a scenario in which a scientist working in a research company, Sky Research . T Sky Research, needs to order a book related to her research from an online bookseller, Scientific Books.
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