Telecom Exam Test Questions Complete Solutions Current Update

Telecom Exam Test Questions Complete Solutions Current Update Why telecommunication is an important infrastructure? - Answers - • For reception and expression of ideas and information What are market and technological convergence? - Answers - • Technological Convergence → the coming together of various media forms so that they share functional characteristics → TV, Computer, Cell • Market Convergence → the merging of media corporations telecommunications - Answers - dissemination of messages over a distance media - Answers - conduits or carriers of human communication that can reach great numbers of people broadcasting - Answers - originally from agriculture. The distribution of seeds. One to many → technology that utilizes antenna, represents more of the traditional electronic media like radio and television→ refers to ability to send out radio waves all over Functions of Electronic Media - Answers - ------ Entertainment - Answers - News and Information - Answers - find out events of today through electronic and media Commerce - Answers - buying and selling things, media is dominated by advertising Culture and Customs - Answers - understanding of what is important and vital w/ people turn to media for what we should look like, act like, etc. Watchdog - Answers - 24 hour a day surveillance of outside world, Relaxation & Companionship - Answers - Connecting People - Answers - electronic media (smart phones) connect people Broadcasting Radio - Answers - ------ Weaknesses of wired communication - Answers - construction and maintenance Samuel Morse - Answers - • Invented the telegraph in 1844 → also Morse Code Translator (systems of dots and dashes for all letters in alphabet, can start sending messages immediately), • First message sent was "What hath god wrought" • Could send messages from one point to other • Became very important Alexander G. Bell - Answers - • Invented the telephone (1877) → Bell found a way to send words over a wire from point to point • Both the telegraph and telephone businesses supported themselves through commercial means • Both the telegraph and telephone were point-to-point communication media. They sent a message from one source to a receiver. One to one through a wire • Negatives point to point communication through wire → expensive to make, bad weather will cause service to go out Heinrich Hertz - Answers - demonstrated the existence of electromagnetic waves 9. Guglielmo Marconi - Answers - • Started experimenting with radio transmitters and receivers. • Eventually he developed a powerful wireless business. • Marconi obtained a patent for his wireless telegraph in the turn of the centery (1896) • Starts Marconi Wireless Corporation in Telegraph and eventually American Marconi→ becomes multi-millionaire • A Patent guarantees you intellectual ownership of your intellectual property → very valuable. Initial uses of radio before broadcasting - Answers - point to point communication between ships Titanic and its affect on radio regulation and shipping industry - Answers - The Wireless Ship Act of 1910 was in effect when the Titanic disaster occured. However, it didn't specify how many hours per day the wireless operators had to stay at their posts, which is why noone heard the distress calls from the Titanic. After the Titanic sunk, the Radio Act of 1912 was passed to set the frequencies and hours of operation. Reginald Fesseden - Answers - • Tested his alternator on Christmas Eve, 1906, demonstrated that voice could be transmitted over the "ether". • Fessender's alternator produced a continuous wave that was needed for the transmission of voice or music Audion Lee Deforrest - Answers - • De Forest's "Audion" made it possible to amplify weak radio signals. • The "Audion" modified the "Fleming valve" by inserting a wire grid between the plate of the tube and its cathode • De Forest's audion got him into patent trouble with Marconi company. Navy and WWI's effect on radio development - Answers - • During WWI, the Navy took control of all radio operations in the U.S. The Navy assumed all responsibilities for patent infringement and installed radio equipment on all of its ships. By the end of the war, technology had advanced rapidly as a result of the Navy's actions. Many radio operators received training during the war. Formation of RCA - Answers - Radio Corporation of America; formed with participants including the Navy, GE, AT&T, and Westinghouse; RCA took controlling interest of the American Marconi Company Significance of KDKA - Answers - credit for having uninterrupted service and for being commercially licensed since 1920