Practice Quiz in Digital and Data Communication Networks Part 22

This is the Online Practice Quiz in Digital and Data Communication Networks Part 22 as one of the Communications Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies, Communications Books, Journals and other Communications References.

Continue Part XXII of the Online Practice Quiz

Quiz in Digital and Data Communication Networks Question 211. Function of data link protocol that coordinates the rate at which data are transported over a link and generally provides an acknowledgement mechanism that ensures that data are received in the destination. A. Flow control B. Line discipline C. Polling D. Selection Question 212. A digital modulation technique also known as “on-off” keying A. PSK B. FSK C. QUAM D. OOK Question 213. It is used to compare two or more digital modulation systems that use different transmission rates, modulation scheme or encoding techniques A. Energy per bit-to-noise power density ratio B. Noise power density C. Power density ratio D. Carrier-to-noise ratio Question 214. The magnitude of a quantum in quantization of PCM codes. A. Maximum decodable voltage B. Dynamic range C. Resolution D. Coding level Question 215. The first file transfer protocol designed to facilitate transferring data between two personal computers over the public switched telephone network A. X modem protocol B. Y modem protocol C. Z modem protocol D. BLAST Question 216. It is a type of FSK where the mark and space frequencies are synchronized with the input binary rate A. QFSK B. GFSK C. CPFSK D. GSK Question 217. It is a solicitation sent from the primary to a secondary to determine if the secondary has data to transmit A. Selection B. Polling C. Error control D. Master control Question 218. In order to separate channels in the TDM receiver, it is necessary to use A. AND gates B. bandpass filters C. differentiation D. integration Question 219. Higher order TDM levels are obtained by A. dividing pulse widths B. using the a-law C. using u-law D. forming supermastergroups Question 220. It is essentially the same with FDM, where several signals are transmitted using different carriers, occupying non-overlapping bands of frequency and wavelengths. A. Time division multiplexing B. Wave division multiplexing C. Space division multiplexing D. Frequency division multiplexing

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