A long string of Os and Is can cause correctly 6. 7. The samples Multiple Choice Questions (l point each) l. in digital transmission to map binary digits to signal elements b. in analog c to help minimize errors d. all of the above 2. If the baud rate is 400 for a QPSK signal, the bit rate is bps. A) 100, B) 400, C) 800, D) 1600 B) n+I, C)n-I, D)0 to n A) Efficiency; privacy and antijamming slots A) n, can be achieved by using multiplexing: c can be achieved by using spreading B) Privacy and antijamming; efficiency, C) Privacy and efficiency; antijamming, D) Efficiency and antijamming; privacy For the following, match the type of signaltransmission to the item (I point each). A. analog data/digital encoding B. analog data/analog encoding C. digital data/digital encoding 1. Pulse code modulation ,2 LAN transmission SHORT PROBLEMS (get credit ONLY for correct answer with correct work) ling technique What size code is needed. (9 points) in digitally encoding analog cdata and 2048 distinct voltage levels were recorded