CIS 130. Spring, 1999. Quiz 2. Some terms to focus on Lectures, Labs, Textbook Chapters 4 and 5 (part) ** Practical skills ASCII code chart know how to find the bit pattern for a character and the reverse. how do Unix and DOS handle end of line characters differently? how do carriage return and line feed differ in function? ASCII code for the Unix newline character? If we press the Backspace Key on our keyboard and see ^? on our screen what is going on ? if we see ^H ? how to convert binary to decimal, and decimal to binary dialing with a modem: how to turn off call waiting how to get an outside line **Chapter 4: Data Transmission and Transmission Media Key terms on page 92 Be able to answer the questions on page 92-93, plus: Guardband Transmission impairments: the major kinds How noise can interfere with a signal? What kind of noise is the primary source of error in digital data communication but is only a minor annoyance for analog data? What is the measure of efficiency of digital transmission? (bps/Hz) Electromagnetic Spectrum: What order on the spectrum do the following occur: UTP, Coaxial cable, terrestrial and satellite microwave, fiber optic Media: Compare data rate, bandwidth, distance, vulnerability to noise and monitoring, and cost of twisted pair, coaxial cable, fiber optic, satellite, and terrestrial microwave Be able to recognize: twisted pair, coaxial, and fiber optic cable. Chapter 5. Questions 1 through 8, and problem 1 at the end of the chapter. And the following terms: Analog Data, Analog Signal, Digital Data, Digital Signal What kind of media can transmit digital signals? Know one example for each of the four encoding techniques in section 5.2 (e.g., 'analog encoding of digital info' is often done by a modem) PCM, CODEC Serial and Parallel ports Asynchronous and Synchronous transmission Time it would take to send a number of bytes over an asynchronous line (for practice, do Problem 1 on page 136) What is a DTE ? a DCE ? Start, Data, Parity, Stop bits What is a carrier signal? ASK, FSK, PSK What is EIA-232?