ECAT Computer Science Online Test With Answers

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ECAT Computer Science Online Test

Sr. # Questions Answers Choice
1 ___________coding scheme is used by IBM Unicode ASCII EBCDIC BCD
2 _________Coding schemes use 4 bit code Unicode ASCII EBCDIC BCD
3 The music and speech represent the: Image Data Audio Data Video Data Text Data
4 The charts, graphs and pictures are examples of: Image Audio Video Text
5 Which types of data consists of words ,sentences and paragraphs Text Image Numeric Video
6 The Height of wave within a given period of time is called : Amplitude Oscillation Frequency Pulses
7 The number of times a wave repeats during a specific time interval is called Amplitude Oscillation Frequency Pulses
8 Light sound and radio waves are examples of : Analog Signals Digital Signals Simple Signals None
9 Communication between a computer and a keyboard involves Simplex half-duplex Full-duplex automatic
10 BIT stands for: Binary integer Binary Digit Binary Interval None of the above
11 The electromagnetic or light waves representing data are called: Reraction Information Signals None
12 The _______ is the physical path over which a message travels. Protocol Medium Single All
13 A device that receives messages is called: Transmitter Receiver Source Sender
14 _______is not component of data communication. Medium Voltage Decoder Receiver
15 ________ is component of data communication. Sender Receiver Encoder and Decoder All
16 The information that is to be transferred from one location to another is called: Signals Data Sender Message
17 The process of transferring data from one location to another is called: Data processing Data Computing Data communication Data sequencing
18 Data communication requires only a : Sender Receiver Transmission Medium All of the above
19 _________ is an autio input device: Digital camera Microphone Video camera Speaker
20 ___________ devices is used chek and process the test marks of students OMR Barcode Reader An example of smart card MICR
21 _______ is a photoelectric scanner that translate the barcode symbol into digital code. MICR Barcode Reader OCR OMR
22 The Barcode is called Universal product code EBCDIC code ASCll Code Unicode
23 Imaging uses what device to input data: Tablet Icon Barcode Reader Scanner
24 ________ pointing device uses the sensors to detect the touch of a finger Touchscreen Light Pen Pointing Stick Joystick
25 _______ pointing devices has a vertical handle like a gearshift lever: Light pen Pointing stick Trackball Joystick
26 ______input device is not a pointing device Scanner Pointing Stick Digitizing Tablet Touchpad
27 Arrow keys are also known as : Function keys Cursor control keys Toggle keys Special keys
28 ________ key is used to cancel the current operation Alt Caps Lock Ese Num lock
29 A program or set of programs that is specially designed to control the computer system is called: System software Application Freeware Shareware
30 A set of instructions in a computer is: Software Program Hardware Both A and B
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