Organization, CPU, I/O Devices Questions with Solutions
This topic covers how a computer is organised internally and how it communicates with the outside world. The central processing unit (CPU) has three main parts: the arithmetic logic unit (ALU), which performs calculations and comparisons; the control unit (CU), which directs operations; and registers, which hold data temporarily. The topic also covers the system bus (data, address and control buses), the motherboard, and clock speed. Input and output (I/O) devices are the other main part. Input devices include the keyboard, mouse, scanner, microphone, OCR, OMR, MICR and barcode readers. Output devices include monitors, printers (impact and non-impact), plotters and speakers. Exam questions often ask you to classify a device as input, output or both (such as a touchscreen), or to identify which device is used for a particular purpose, such as MICR for bank cheques. Practise the CPU and I/O device questions below. Each answer includes an explanation.
- Q21.
Resolution of a digital camera is measured in
A. MPB. GPC. HzD. GBeasyAsked in TCS ExamView solution › - Q22.
Which of the following is an output device?
A. PrinterB. ROMC. RAMD. JoystickeasyAsked in TCS ExamView solution › - Q23.
A computer always has a:
A. MouseB. KeyboardC. CPUD. Graphics cardeasyAsked in TCS ExamView solution › - Q24.
Which type of equipment is modem?
A. StorageB. InputC. Input/outputD. OutputeasyAsked in TCS ExamView solution › - Q25.
Input devices most commonly used on laptops for routine operations are_______.
A. Mouse and PendriveB. Keyboard and ScreenC. Keyboard and MouseD. Keyboard and CD-ROMeasyAsked in TCS ExamView solution › - Q26.
Which of these input devices is widely used in tests such as aptitude tests?
A. Bar code readerB. Optical mark recognitionC. Magnetic Ink character recognitionD. TouchpadeasyAsked in TCS ExamView solution › - Q27.
Which of the following is device that can send or receive pictures and text over a telephone line, by digitising an image?
A. PlotterB. Fax MachineC. Sound cardsD. MonitoreasyAsked in TCS ExamView solution › - Q28.
Which of the following is hardware?
A. ExcelB. Printer DriverC. Operating SystemD. CPUeasyAsked in TCS ExamView solution › - Q29.
Which of the following is not performed by a computer's CPU.
A. Fetching instructionB. Directive interpretationC. Storing data permanentlyD. Data processingeasyAsked in TCS ExamView solution › - Q30.
Which one of the following input technologies do banks use to process cheques?
A. OCRB. MICRC. OMRD. PixelseasyAsked in TCS ExamView solution › - Q31.
In the context of computer processors, what is the full form of ALU?
A. Arithmetic Logic unitB. Array Logic UnitC. Application Layer UnityD. Application Layer UsabilityeasyAsked in TCS ExamView solution › - Q32.
What determines the number of operations per second that a processor can perform? It is expressed in megahertz (MHz) or gigahertz (GHz).
A. Clock SpeedB. BandwidthC. FrequencyD. FLOPSeasyAsked in TCS ExamView solution › - Q33.
The ________ is a small program that controls the computer from the time it powers on until the time the operating system takes over.
A. CMOSB. BIOSC. EPROMD. POSTeasyAsked in TCS ExamView solution › - Q34.
The part of the CPU which contains circuitry that uses electrical signals to direct the entire computer system to carry out or execute stored program instructions is known as :
A. Control UnitB. Arithmetic and logical UnitC. registerD. Program countereasyAsked in TCS ExamView solution › - Q35.
Which of the following is an input device that utilises at light-sensitive detector to select objects on a display screen?
A. Light penB. Bar code readerC. Optical mark recognition (OMR)D. Magnetic ink character recognition (MICR)easyAsked in TCS ExamView solution › - Q36.
The speed of the Central Processing Unit (CPU) is measured in ________ which represents a CPU cycle.
A. Gigabyte (GB)B. Hertz (Hz)C. Terabyte (TB)D. Kilobyte (KB)easyAsked in TCS ExamView solution › - Q37.
Which of the following devices is NOT used to enter data into a computer?
A. MouseB. KeyboardC. ScannerD. MonitoreasyAsked in TCS ExamView solution › - Q38.
'C' in CPU denotes _________.
A. CentralB. CommonC. ConvenientD. ComputereasyAsked in TCS ExamView solution › - Q39.
A Joystick is primarily used to/for _______.
A. Control sound on the screenB. Computer gamingC. Enter textD. Draw pictureseasyAsked in TCS ExamView solution › - Q40.
Which is not a storage device?
A. A CDB. A DVDC. A floppy diskD. A printereasyAsked in TCS ExamView solution ›