ECAT Computer Science MCQ's Test For Full Book With Answers

ECAT Computer Science MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Which of the following does not represent an I/O devices? speaker OCR Joystick ALU
2 An example of peripheral equipment CPU spreadsheet printer microcomputer
3 The equipment attached to CPU which computer can access are called. hardware input/output devices peripherals computer components
4 Data and instructions are put into primary storage by. memory the control unit secondary storage the ALU
5 The complex set of electrical circuitry that executes program instructions is called the. register central processing unit accumulator bus line
6 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
7 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
8 Desktop and personal computers are other names for. micro computers mini computers mainframes peripheral equipment
9 Step-by-step instructions that run the computer are. hardware documents programs CPUs
10 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
11 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
12 The term "time slicing" need not apply to. On line transacting processing Batch processing Real time processing None of the above
13 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
14 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
15 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
16 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
17 The heart of a digital computer is.... control unit memory unit logic unit visual display unit
18 During E-time the ALU.. examines the instruction enters the instruction executes the instruction elicts the instruction
19 The process of executing several programs simultaneously by the use of more than one processing unit is called. Multiprogramming Time sharing Multiprocessing Batch processing
20 The following register keeps track of the program during execution. Address register Program counter Data register Accumulator
21 Which is not associated with the main memory of computer. semiconductor memory core memory read only memory sequential memory
22 The operation of arithmetic logic unit (ALU) is directed by. the ALU itself program control unit memory unit
23 The different memory locations are identified by hexadecimal numbers called. ASCII code bytes BCD numbers addresses
24 Each location in primary storage is assigned a unique. data field name address
25 Which of the following is an example of volatile memory. ROM RAM PROM Hard disk
26 The term word in computer terminology refers to. bits formed into groups coded instructions memory size language used
27 A bus line consists of. registers accumulators parallel data paths machine cycles
28 Memory is divided into many numerically addressed. logic locations codes cells
29 Information travels between components of a computer through groups of wires called. cards busses slots ports
30 The clock speed of a computer is measured in. megahertz kilobytes megabytes binary digits
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