This is the Online Practice Quiz in Wire and Wireless Communications System Part 50 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 L of the Online Practice Quiz
Quiz in Wire and Wireless Communications System
Question 491. It is simply the dedicated cable facility used to connect an instrument at a subscriber’s station to the closest telephone office.
Question 492. It is used to convert two-wire circuits to four-wire circuits which is similar to hybrid coil found in standard telephone sets.Question 493. The 5-class switching hierarchy is a __________ scheme that establishes an end-to-end route mainly through trial and error.Question 494. Circuits that are designed and configured for their use only and often referred to as private circuits or dedicated circuits.Question 495. When the image at the receiving end of a facsimile transmission us elongated horizontally,Question 496. Which resolution produces the best quality fax?Question 497. It is a programmable matrix that allows circuits to be connected to one another.Question 498. It is a sudden, random changes in the phase of the signal. They are classified as temporary variations in the phase of the signal lasting longer than 4 ms.Question 499. When subscriber initiates a long distance calls, the local exchange connects the caller to the toll office through a facility called ________.Question 500. The most versatile and popular crossbar switch was __________.