Oversampling is the process to capture and retain the fine detail in a signal, TRUE, FALSE, Undersampling is defined as sampling a signal at a rate that is more than the desired Nyquist rate of two times the false highest frequency)., TRUE, FALSE, The disadvantages of oversampling include lower cost,higher power consumption, increased memory size, and increased need for faster processing, TRUE, FALSE, One advantage of oversampling is that is does preserve the signal content., TRUE, FALSE, The greater the oversampling rate, the smaller, simpler, and less expensive the filter, TRUE, FALSE, A key benefit of oversampling is that because it produces many more samples in a given time, it has the effect of increasing the quantization noise floor by spreading it over a wider frequency range., TRUE, FALSE, Under sampling causes aliasing that upon recovery of the signal in a DAC produces a signal that is much lower in frequency, TRUE, FALSE, The aliasing effect can be used as an advantage because it acts as a form of mixing or modulation that transfers a signal from a higher frequency to a lower frequency., TRUE, FALSE, The lower the oversampling rate, the smaller, simpler, and less expensive., TRUE, FALSE, A Local Area Network (LAN) is a network, of computers and other devices that are located within a limited area, such a building or campus, of computers and other devices that covers a large geographical area, typically spanning a city or metropolitan area, of only computers that are located within a limited area, such a building or campus., A Metropolitan Area Network (MAN) is a network, that covers a limited area, such a building or campus, that covers large geographical area, such as a country or even the world., of computer that covers a larger geographical area than a LAN, typically spanning a city or metropolitan area., A Wide Area Network (WAN) is a network, that covers large geographical area, such as a country or even the world, that covers a limited area, such a building or campus., of computer that covers a larger geographical area than a LAN, typically spanning a city or metropolitan area., The Internet is the ultimate data communication network. It uses, virtually every conceivable type of data communication equipment and specific techniques, specific type of data communication equipment and technique., virtually every conceivable type of data communication equipment and technique., Cloud computing is the process of, storing and accessing programs or data over the computer’s hard drive,, storing and accessing programs or data over the Internet., storing and accessing only data over the Internet., What is oversampling?, Sampling a signal at exactly the Nyquist rate, Sampling a signal at a rate higher than twice its highest frequency, Sampling a signal below its Nyquist rate, What is undersampling?, Sampling a signal at a rate higher than required, Sampling a signal exactly at twice the highest frequency, Sampling a signal at a rate lower than twice its highest frequency, What is the main problem caused by undersampling?, Aliasing distortion, Improved signal clarity, Reduced noise, According to the Nyquist theorem, the minimum sampling rate required to avoid aliasing is:, Equal to the highest frequency, Half of the highest frequency, Twice the highest frequency, One advantage of oversampling is:, It reduces aliasing risk, It always reduces power consumption, It eliminates quantization, A signal has a highest frequency component of 8 kHz. Which of the following sampling rates represents oversampling?, 12 kHz, 16 kHz, 20 kHz, 8 kHz, A band-limited signal (0–5 kHz) is sampled at 6 kHz. What will occur?, Perfect reconstruction without distortion, Aliasing due to undersampling, Improved resolution, Increased signal bandwidth, Which statement best describes undersampling in a general digital communication system?, It increases the effective signal-to-noise ratio, It causes high-frequency components to fold into lower frequencies, It reduces quantization error, It increases data throughput, A signal contains frequency components up to 2 MHz. It is sampled at 3 MHz. The resulting sampled signal will:, Be correctly reconstructed, Contain aliasing distortion, Have improved resolution, Have zero quantization error, What is the Internet?, A single large computer that stores all global data, A worldwide system of interconnected computer networks using TCP/IP, A wireless communication system only, A private company that provides web services, Which protocol suite is primarily used for communication over the Internet?, HTTP/FTP, GSM/CDMA, TCP/IP, HDMI, Cloud computing is best defined as:, Storing files only on a local hard drive, Using remote servers over the Internet to store, manage, and process data, Connecting computers using Ethernet cables, Sending emails through a mail server.

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