Practice Quiz in Wire and Wireless Communications System Part 41

This is the Online Practice Quiz in Wire and Wireless Communications System Part 41 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 XLI of the Online Practice Quiz

Quiz in Wire and Wireless Communications System Question 401. The class of switching office that provides service to small groups of class 4 offices within a small area of state. A. Class 1 B. Class 4 C. Class 2 D. Class 3 Question 402. It eliminates the echo by electrically subtracting it from the original signal rather than disabling the amplifier in the return circuit. A. echo suppressors B. echo limiters C. echo cancellers D. Any of these Question 403. A mandate that requires all telephone companies to support the porting of telephone number. A. national number portability B. regional number portability C. local number portability D. sectional number portability Question 404. A signal sent from the switching machine back to the calling station whenever the system cannot complete call because of equipment unavailability. A. busy tone B. call waiting tone C. fax tone D. congestion tone Question 405. It is a sudden, random change in the gain of the circuit resulting in a temporary change in the signal level. A. spikes B. gain hits C. jitter D. echo Question 406. ____________ is the switching system that is a branch of the local central office. A. local exchange B. branch exchange C. subscriber loop D. line Question 407. A device that serves as a demarcation point between local telephone company responsibility and subscriber responsibility for telephone service. A. standard network interface B. subscriber line interface card C. system network architecture D. network interface card Question 408. The first computer-controlled central office switching system used in PSTN. A. No.7 ESS B. No.2 ESS C. No.5 ESS D. No. 1 ESS Question 409. The final length of cable pair that terminates at the SNI. A. aerial B. drop wire C. distribution cable D. cross-connect cables Question 410. Acknowledgement and status signals that ensure the process necessary to set up and terminate a telephone call are completed in an orderly and timely manner, A. call progress tones and signals B. call waiting tones and signals C. incoming call tones and signals D. call termination tones and signals

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