MULTIPLE CHOICE 1. A key parameter that characterizes any electromagnetic signal is , which is the width of the range of frequencies that comprises the signal A) analog B) wavelength C) bandwidth D) digital transmission signals are transmitted in only one direction: one station is the transmitter and the other is the receiver. A) half duplex B) simplex C) full duplex D) multipoint 2. Wireless transmission occurring through the atmosphere, outer space or water is an example of A) guided media B) bandwidth C) wavelength D) unguided media transmission media, the transmission capacity, in terms of either data rate or bandwidth, depends critically on the distance and on whether the medium is point-to-point or multipoint. A) unguided B) guided C) terrestrial microwave D) atmospheric s. The simplest form of digital encoding of is to assign one voltage level to binary.one and another to binary-zero. A) digital data B) carrier data C) AM data D) analog data converts digital data to analog signal so that it can be transmitted over an analog line A) modem B) satellite C router D) receiver is one of the most fundamental requirements in the transmission of a stream of bits from one device to another A) Standardization B) Digitalization C) Synchronization D) Configuration error can occur in the presence of white noise when a slight random deterioration of the signal to noise ratio is sufficient to confuse the receiver's decision of a single bit. A) burst B) idle C) single-bit D) digital control is achieved 9. In a data link control protocol, by retransmission of damaged frames. A) DLHC B) data C) error D) flow 11. Frequency division multiplexing can be used with signals. A) digital signals carrying digital data B) analog signals carrying digital data C) analog D) digital 12. Synchronous time division multiplexing can be used with signals. A) analog B) digital signals or analog signals carrying digital data C) digital D) digital signals carrying digital data 13. Circuit switching was developed to handle traffic A) voice B) A/V C) video D) data 14. With _ a dedicated path is established between two stations for communication. A) block switching B) packet switching D) X.25 C) circuit switching