Description : Modem is referred to as ______. A. Universal asynchronous Rx/Tx B. Data communication equipment C. Universal synchronous Rx/Tx D. Data terminal equipment
Last Answer : B. Data communication equipment
Description : The primary purpose of the data modem is to A. interface analog terminal equipment to analog communications channel B. interface digital terminal equipment to analog communications ... to digital communications channel D. interface digital terminal equipment to digital communications channel
Last Answer : B. interface digital terminal equipment to analog communications channel
Description : The line control unit (LCU) operates on the data digital form. A. Data communications equipment (DCE) B. UART C. Modem D. Data terminal equipment (DTE)
Last Answer : D. Data terminal equipment (DTE)
Description : ___________ is a device in data transmission to interface data terminal equipment to an analogue transmission line. A. RS 232 B. Connector C. Modem D. RJ-11 plug
Last Answer : C. Modem
Description : The local loop of the telephone system is understood to be A. a single piece of wire connecting the subscriber's telephone set to another telephone set in an adjacent room B. a two-wire or four- ... a facsimile machine to a computer D. a group of wires connecting a telephone set to a modem
Last Answer : B. a two-wire or four-wire communication circuit between the customer’s premise and central office
Description : The conversion of digital signal into analog for purposes of transmitting into the telephone line is done through ______. A. ISDN B. Radio C. RS232C D. Modem
Last Answer : D. Modem
Description : These are used to connect non-ISDN equipment ot ISDN line. A. Digipeaters B. Terminal adapters C. Local repeaters D. Terminal repeaters
Last Answer : B. Terminal adapters
Description : What is the data link protocol that is used in asynchronous transmission for transferring files from one computer to another? A. A modem B. X modem C. B modem D. C modem
Last Answer : B. X modem
Description : What is the data link protocol that is used in asynchronous transmission for transferring files from one computer to another? A. A modem B. X modem C. B modem
Description : Main basic components of a data communication are composed of the following. A. Computer, modern and router B. Computer, bridge and gateway C. Transmitter, channel and receiver D. Transmitter, computer and modem
Last Answer : C. Transmitter, channel and receiver
Description : Who is responsible in the correctness and accuracy of transmitted information content over a data communication? A. The channel B. The transmitter and receiver C. The modem D. The bridge
Last Answer : B. The transmitter and receiver
Description : A system that performs parallel-to-serial and serial-to-parallel conversion of data link. A. DCE B. DTE C. Modem D. PC
Last Answer : B. DTE
Description : Which one of the following allows computers to transfer data using a telephone line ? (1) Keyboard (2) CPU (3) Modem (4) Printer
Last Answer : Modem
Description : What component in the telephone set has the primary function of interfacing the handset to the local loop? A. Varistor B. Induction coil C. Resistor D. Capacitor
Last Answer : B. Induction coil
Description : A modem is connected in between a telephone line and a (a) computer -Technology
Last Answer : (a) Modem is a device that enables computers and other equipment to communicate with each other using telephone lines.
Description : A modem- 1) Translates along Signals from a computer into digital Signals that can travel along conventional telephone lines 2) Translates digital Signals from a computer into analog Signals that can ... conventional telephone lines 3) Demodulates digital Signals from a computer. 4) None of these
Last Answer : 4) None of these
Description : What are the four things needed to connect to the Internet? 1) Telephone line, modem, computer, and an ISP 2) Modem, computer, PDA and ISP 3) Telephone line, PDA, modem and computer 4) monitor, keyboard, mouse, modem
Last Answer : 1) Telephone line, modem, computer, and an ISP
Description : What are the four things needed to connect to the Internet? 1 Telephone line, modem, computer, and an ISP 2 Modem, computer, PDA and ISP 3 Telephone line, PDA, modem and computer 4 monitor, keyboard, mouse, modem
Last Answer : 1 Telephone line, modem, computer, and an ISP
Description : The telephone line is connected through the ____on the computer. (1) USB (2) Modem (3) Ethernet (4) PS2
Description : The device that converts computer output for transmission over telephone lines is called (1) interface (2) interpreter (3) modem (4) I/O port
Last Answer : modem
Description : Which of the following is referred to as a radio emission without sidebands A. Analog B. Carrier C. Data D. Voice
Last Answer : B. Carrier
Description : Which of the following is not a common application of fiber-optic cable? a. Computer networks b. Long-distance telephone systems c. Closed circuit TV d. Consumer TV
Last Answer : d. Consumer TV
Description : ECE Board Exam March 1996 Modems are required to connect computer to telephone lines because ___________. A. telephone company rules required them B. the telephone network bandwidth is too high C. none of the above D. the telephone network will pass direct current
Last Answer : D. the telephone network will pass direct current
Description : Which circuit detects frequency modulated signal? A. Modulator B. Discriminator C. Demodulator D. Modem
Last Answer : B. Discriminator
Description : Synchronous modems cost more than asynchronous modem because _______. A. They have larger bandwidth B. They are larger C. The production volume is larger D. They have clock recovery circuits
Last Answer : D. They have clock recovery circuits
Description : The correctness and accuracy of the transmitted message content is A. verified by the modem B. communications system C. determined by the sender and receiver D. ensured by use of digital technique
Last Answer : C. determined by the sender and receiver
Description : Which of the following is not a transmission medium? (a) Telephone lines (b) Co_axial cable (c) Modem (d) Microwave system -Technology
Last Answer : (c) All are communication channel but modem is a dev that convert analog signals to digital signals or vice-versa
Description : One advantage of dial-up-internet access is ___ 1) It utilises broadband technology 2) It utilizes existing telephone service 3) It uses a router for security 4) Modem speeds are very fast 5) None of these
Last Answer : Answer :2
Description : Which of the following is not a transmission medium? a. telephone lines b. coaxial cables c. modem d. microwave systems
Last Answer : microwave systems
Description : The pieceof hardware that converts your computer'sdigital signal to ananalog signal that cantravel over telephone lines is called (A) red wire (B) blue cord (C) tower (D) modem (E) None of these
Description : Computers cannot communicate with each other directly over telephone lines because they usedigitalpulses whereas telephone lines useanalog sound frequencies. What is the name of the device which permits digital to analog ... A. Interface B. Modem C. Attenuation D. Teleprocessor E. None of the above
Description : The probability thata singlebit will be inerror on a typical public telephone lineusing 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error ratefor a communicationline using 9-bit frames is ... to A. 0.003 B. 0.009 C. 0.991 D. 0.999 E. None of the above
Last Answer : 0.009
Description : The piece of hardware that converts your computers digital signal to an analog signal that can travel over telephone lines is called a: a) Red Wire b) Blue Cord c) Tower d) Modem e) None of These
Last Answer : d) Modem
Description : Different computers are connected to a LAN by a cable and a (1) modem (2) interface card (3) special wires (4) telephone lines
Last Answer : interface card
Description : The device that converts digital signals to analog signals at the start of long distance transmissions is (1) peripheral (2) modem (3) telephone (4) antenna
Description : In a synchronous modem, the digital-to-analog converter transmits signal to the a. equilizer b. modulator c. demodulator d. terminal e. none of aobve
Last Answer : equilizer
Description : Which of the following statement is correct? a. terminal section of a synchronous modem contains the scrambler b. receiver section of a synchronous modem contains the scrambler c. transmission section of ... d. control section of a synchronous modem contains the scrambler e. none of the above
Last Answer : transmission section of a synchronous modem contains the scrambler
Description : An important terminal that is required between DTE and PSTN is (A) Server (B) MODEM (C) Relay (D) Network card
Last Answer : (B) MODEM
Description : INTELSAT stands for A. Intel Satellite B. International Telephone Satellite C. International Telecommunications Satellite D. International Satellite
Last Answer : C. International Telecommunications Satellite
Description : How many telephone channels are there in AT 2 line? A. 50 B. 90 C. 83 D. 96
Last Answer : D. 96
Description : And ITU-T specification code that deals with the telephone circuits. A. X series B. T series C. V series D. I series
Last Answer : C. V series
Description : ______ is a term in the test language for noise testing in telephone circuits that means a one-syllable word consisting of a consonant, a vowel, and another consonant. A. Logatom B. Nosfer C. Ore D. Belcore
Last Answer : A. Logatom
Description : Three telephone circuits, each having an S/N ratio of 44 dB, are connected in tandem. What is the overall S/N ratio? A. 44 dB B. 39.2 dB C. 41 dB D. 43.52 dB
Last Answer : B. 39.2 dB
Description : What kind of receiver is used in conventional telephone handset? A. Capacitor B. Electromagnetic C. Carbon D. Ceramic
Last Answer : B. Electromagnetic
Description : A third symbol radio emission which represent telephone transmission including sound broadcasting. A. W B. F C. C D. E
Last Answer : D. E
Description : What is the channel bandwidth of a standard analogue telephone system? A. 300-500 Hz B. 1200 kHz C. 100-300 Hz D. 300-3400 Hz
Last Answer : D. 300-3400 Hz
Description : What signal-to-noise ratio is required for satisfactory telephone services? A. 50 dB B. 30 dB C. 40dB D. 20 dB
Last Answer : A. 50 dB
Description : Transmission of printed material over telephone lines. A. Video text B. Facsimile C. Encoding D. Xerox copy
Last Answer : B. Facsimile
Description : What is the advantage of sidetone? A. High transmission efficiency B. Results to a strengthened signal C. No energy dissipation D. Assures that the telephone is working
Last Answer : D. Assures that the telephone is working