ECAT Pre Computer Science MCQ Test For Computer Chapter 6 With Answer

Top Scorers Of ECAT Computer Science Chapter 6 Data Communication MCQ`s Test

Sr.#	Question	Answer
1	Project 802 defines standards for which layers of the OSI model?	A. Application and Presentation layers B. Physical an Date Link layers C. Transport and Network layers D. Network and Data Link layers
2	The signals produced by a computer or terminal to be sent over phone lines must be converted to.	A. modems B. analog signals C. digital signals D. microwave
3	Which of the following does not provide a graphical user interface.	A. OS/2 B. MS-DOS C. Macintosh D. Windows NT Workstation
4	A network of geographically distant computers and terminals is called a.	A. bus B. WAN C. gateway D. LAN
5	A device that receives messages is called:	A. Transmitter B. Receiver C. Source D. Sender
6	Which of the following access methods listens to the cable for network traffic before sending data?	A. Token passing B. Polliing C. CSMA/CA D. CSMA/CD
7	Microwave transmission, coaxial cables, and fiber optics are examples of.	A. modems B. communication links C. gateways D. ring network
8	When all hardware, software, storage, and processing is housed in one location it is called.	A. a time-sharing system B. centralized processing C. a DDP system D. a host computer system
9	Communication circuits that transmit data in both directions but not at the same time are operating in.	A. Simplex mode B. Half duplex mode C. Full Duplex mode D. None of above
10	________ is component of data communication.	A. Sender B. Receiver C. Encoder and Decoder D. All