Description : When the computer network uses telephone lines as communication channel -Technology
Last Answer : MODEMperforms the task of Modulation at sender's site and DEModulation at the receiver's end. Basically, our computer generates data in the form of digital signals which needs to be forwarded ... signals should be converted back to the original digital signals, then this is called demodulation.
Description : Which of the following transmission systems provide the highest data rate to in individual device? a. computer bus b. telephone lines c. voice and mode d. lease lines
Last Answer : computer bus
Description : A remote batch-processing operation in which data is solely input to a central computer would require a. telegraphp line b. simplex lines c. mixed bad channel d. all of above
Last Answer : simplex lines
Description : Most data communications involving telegraph lines use: a. simplex lines b. wideband channel c. narrowband channel d. dialed service
Last Answer : narrowband channel
Description : Which transmission mode is used for data communication along telephone lines? (A) Parallel (B) Serial (C) Synchronous (D) Asynchronous
Last Answer : (B) Serial
Description : What is the name of the softwarepackage that allows peopleto sendelectronic mail along anetworkof computers and workstations? A. Memory residentpackage B. Project management package C. Data communication package D. Electronic mail package E. None of the above
Last Answer : Data communication package
Description : Which of the following primarily uses guided media? A) cellular telephone system B) local telephone system C) satellite communications D) radio broadcasting
Last Answer : local telephone system
Description : An example of an analog communication method is a. laser beam b. microwave c. voice grade telephone line d. all of the above
Last Answer : all of the above
Description : An example of ananalog communication method is A. laser beam B. microwave C. voice grade telephone line D. All of theabove E. None of the above
Last Answer : All of theabove
Description : In a telephone system, the customer’s telephone directory numbering is from 000 to 999, what is the capacity of the system? A. 1000 lines B. 100,000 lines C. 10,000 lines D. 100 lines
Last Answer : A. 1000 lines
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
Last Answer : modem
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
Last Answer : Modem
Description : ………………...is a minimal protocol that allows isolated hosts to link via TCP/IP over the telephone network and ………………..uses a proposed international standard for transmitting HDLC over asynchronous lines. A. LCP, PPP B. PPP, LCP C. SLIP, PPP D. PPP, SLIP
Last Answer : C. SLIP, PPP
Description : Telephone companiesprovidetwotypes of analog services: analog _______services andanalog _____services. A) switched; in-band B) out-of-band; in-band C) switched; leased D) leased; out-of-band
Last Answer : switched; leased
Description : Write down the name of communication channel used for telephone line and TV. -Technology
Last Answer : Communication channel for telephone line is twisted pair cable and for TV is co-axial cable.
Description : Communication channel for telephone line is twisted pair cable and for TV is co_axial cable. -Technology
Last Answer : Optical fibre provides secure transmission as compared to twisted pair and co-axial cable. As, it is more immune to tapping than copper cables.
Description : Write down the name of communication channel used for telephone line and TV -Technology
Description : Each layer of the OSI model receives services or data from a layer. a. none b. below and above layer both c. above layer d. below layer
Last Answer : d. below layer
Description : Which of the following statements about technological forces in international marketing is TRUE? A)Television advertising can be used universally throughout the world. B)Much of the technology used in ... always a viable option. D)Technology is generally not a problem in international marketing.
Last Answer : B)Much of the technology used in industrialised regions of the world may be ill-suited for developing countries.
Description : The types of Unguided transmission channel or media used for LAN are __. A. Twisted Pair Cables B. Coaxial Cables C. Radio Waves D. All the above
Last Answer : C. Radio Waves
Description : Communication management: 1. Is important only in projects involving telephone, television, radio, or newspaper production facilities and operations 2. Is not a big problem for people with normal ... . Involves the originator, the message, the medium and the receiver 4. Preparing an agenda
Last Answer : 3. Involves the originator, the message, the medium and the receiver
Description : Telephone, radio inter communicating system are the media used for (a) Formal communication (b) Downward communication (c) Oral communication d) None of these
Last Answer : c) Oral communication
Description : Which of hte following is considered a broad band communication channel? a. coaxial cable b. fiber optics cable c. microwave circuits d. all of above
Last Answer : all of above
Description : Communication channel is shared by all the machines on the network in ________ a) broadcast network b) unicast network c) multicast network d) anycast network
Last Answer : a) broadcast network
Description : POP3 and IMAP are e-mail accounts in which (A) One automatically gets one’s mail everyday (B) One has to be connected to the server to read or write one’s mail (C) One only has to be connected to the server to send and receive email (D) One does not need any telephone lines
Last Answer : (C) One only has to be connected to the server to send and receive email
Description : Which of the following communications lines is best suited to interactive processing applications? a. narrow band channel b. simplex lines c. full duplex lines d. mixed band channels
Last Answer : full duplex lines
Description : A remote batch-processing operation in which datais solely input toa central computer would requirea: A. telegraphline B. simplex lines C. mixed-band channel D. All the above E. None of the above
Description : When a group of computers is connected together in a small area without the help of telephone lines, it is called : (1) Remote Communication Network (RCN) (2) Local Area Network (LAN) (3) Wide Area Network (WAN) (4) Value Added Network (VAN)
Last Answer : Local Area Network (LAN)
Description : The Telephone Model of Communication was first developed in the area of (A) Technological theory (B) Dispersion theory (C) Minimal effects theory (D) Information theory
Last Answer : (D) Information theory
Description : Which protocols adopted the standards of HDLC (High Level Link Control) protocol? a. X.25 protocol as LAPB (Link Access Procedure Balanced, V.42 protocol as LAPM (Link Access Procedure for ... Services Digital Network) protocol as LAPD (Link Access Procedure on D channel) d. All the above
Last Answer : d. All the above
Description : In Bluetooth, the_______ layer is roughly equivalent to thephysical layer of theInternet model. A) radio B) baseband C) L2CAP D) none of the above
Last Answer : radio
Description : Data collection can be done through (i) Interview (ii) Questionnaires (iii) Through E-Mail or by Telephone (iv) All of the abov
Last Answer : (iv) All of the above
Description : Which of the following types of channels moves data relatively slowly? a. wide band channel b. voice band challen c. narrow band channel
Last Answer : narrow band channel
Description : Which of the following types of channels moves data relatively slowly? A. widebandchannel B. voice band channel C. narrowband channel D. broadbandchannel E. None of the above
Description : Carrier is A. One or more conductors that serve as a common connection for a related group of devices B. a continuous frequency capableof being modulated or impressed witha second signal C. ... that provides a data communications service among stations attached tothe network E. None of the above
Last Answer : a continuous frequency capableof being modulated or impressed witha second signa
Description : A noiseless 3 KHz Channel transmits bits with binary level signals. What is the maximum data rate? A. 3 Kbps B. 6 Kbps C. 12 Kbps D. 24 Kbps
Last Answer : 6 Kbps
Description : Contention is A. One or more conductors that serve as a common connection for a related group of devices B. a continuous frequency capableof being modulated or impressed witha second signal C. ... that provides a data communications service among stations attached tothe network E. None of the above
Last Answer : the condition whentwo or more stations attempt to use the same channel at the same time
Description : The digital signals to analog signals are carried out by ………., so that data can travel over telephone lines. -Technology
Last Answer : The digital signals to analog signals are carried out by MODEMso that data can travel over telephone lines.
Description : The first firm to mass- market a microcomputer as a personal computer was a. IBM b. Sperry Univac c. Data General corporation d. Radio Shack
Last Answer : Data General corporation
Description : What is the minimum number of wires needed to send data over a serial communication link layer? a. 1 b. 2 c. 4 d. 6 e. none of above
Last Answer : 2
Description : Which data communication method is used to transmit the data over a serial communication link? a. simplex b. half-duplex c. full-duplex d. b and c e. None of above
Last Answer : full-duplex
Description : Which of the following statement is incorrect? a. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line b. HDLC is a standard ... indicates that it is ready to accept data d. RTS/CTS is the way the terminal indicates ringing
Last Answer : RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW indicates that it is ready to accept data
Description : Which of the following statement is incorrect? a. The difference between synchronous and asynchronous transmission is the clocking derived from the data in synchronous transmission. b. Half ... in online activities d. Batch processing is the prefered processing mode for telecommunication operation.
Last Answer : Batch processing is the prefered processing mode for telecommunication operation.
Description : What type of communication media is the most widely usedcabling for data transfer today? A) Cat 5 B) Twisted pair C) Coaxial D) Optical fiber
Last Answer : Cat 5
Description : High-level Data Link Control (HDLC) is a _______ protocol for communication over point-to-pointand multipoint links. A) bit-oriented B) byte-oriented C) character-oriented D) none of the above
Last Answer : bit-oriented
Description : The largest portionof the bandwidth for ADSLcarries_______. A) voice communication B) upstream data C) downstream data D) control data
Last Answer : downstream data
Description : Data encryption techniquesare particularly useful for A. reducingstorage space requirements B. improving data integrity C. protecting data indata communication systems D. All of theabove E. None of the above
Last Answer : protecting data indata communication systems
Description : There arecertain packages that allow people to define data items, place these items in particular records, combine therecords into designated files and then manipulate and retrieve the storeddata. What arethey ... (DBMS) C. Batch processingsystem D. Data communication package E. None of the above
Last Answer : Database management system (DBMS)