ECAT Computer Science Online Test With Answers

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ECAT Computer Science Online Test

Sr. # Questions Answers Choice
1 The mechanism for reading or writing data in a disk is called a(n). track rotational delay seek time access arm
2 The cursor can be moved rolling this device on a flat surface. mouse wand reader trackball interactive tablet
3 Imaging used what device to input data.? scanner icon bar code reader tablet
4 Voice input devices convert voice input to. digital code OCR-A bar codes optical marks
5 Laser beam technology is used for. terminals optical disk keyboards magnetic tape
6 Which of the following does not represent an I/O devices? speaker OCR Joystick ALU
7 An example of peripheral equipment CPU spreadsheet printer microcomputer
8 The equipment attached to CPU which computer can access are called. hardware input/output devices peripherals computer components
9 Data and instructions are put into primary storage by. memory the control unit secondary storage the ALU
10 The complex set of electrical circuitry that executes program instructions is called the. register central processing unit accumulator bus line
11 Which of the following is a Correct definition of volatile memory?.. It loses its contents at high ambient temperatures Its contents are lost on failure of power supply It has to be kept in air tight boxes always It is the latest type of bubble memory
12 The function of an OP code is. To instruct the CPU To translate a mnemonic Operate the I/O devices To act as a buffer
13 Desktop and personal computers are other names for. micro computers mini computers mainframes peripheral equipment
14 Step-by-step instructions that run the computer are. hardware documents programs CPUs
15 A bootstrap is. a memory device a device to support the computer a small initialization program to start up a computer an error correction technique
16 A computer can be defined as an electronic device that can: (choose the most precise definition). carry out logical functions carry out arithmetical operations accept and process data using a set of stored instructions present information on a VDU
17 The term "time slicing" need not apply to. On line transacting processing Batch processing Real time processing None of the above
18 At the beginning of the instruction cycle, the contents of the Instruction Register specify. Operand for the instruction being executed Instruction itself Operand for the instruction to be executed next None of above
19 Which of the following will happen when data is entered into a memory location It will change the address of the memory location It will add to the content of the location It will not be fruitful if there is already some data in that location It will erase the previous content
20 Wrong Statement. Information stored in RAM can be changed by over writing it Information stored in ROM cannot be changed by over writing it Information can be stored in any location of RAM Computer main memory can be accessed only sequentially
21 Pick out the correct definition of buffer. Buffer is a hardware device that stores data outside the CPU Buffer is that portion of the CPU memory which stores program instructions Buffer is a temporary storage between the CPU memory and a peripheral device Buffer is a device to convert input data into a computer readable form
22 The heart of a digital computer is.... control unit memory unit logic unit visual display unit
23 During E-time the ALU.. examines the instruction enters the instruction executes the instruction elicts the instruction
24 The process of executing several programs simultaneously by the use of more than one processing unit is called. Multiprogramming Time sharing Multiprocessing Batch processing
25 The following register keeps track of the program during execution. Address register Program counter Data register Accumulator
26 Which is not associated with the main memory of computer. semiconductor memory core memory read only memory sequential memory
27 The operation of arithmetic logic unit (ALU) is directed by. the ALU itself program control unit memory unit
28 The different memory locations are identified by hexadecimal numbers called. ASCII code bytes BCD numbers addresses
29 Each location in primary storage is assigned a unique. data field name address
30 Which of the following is an example of volatile memory. ROM RAM PROM Hard disk
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