100+ Common Computer Science Interview Questions for sure success
Computer Science Interview Questions – Some commonly asked questions are given here which are asked from the freshers of Computer Science graduates such as B.Sc. Computer Science, B.Tech. Computer Science and BCA students.
What do you mean by word computer
A computer is an electronic device that computes data according to the sequence of instructions provided by the user.
Computer process data and transform the data into information according to the sequence of instructions given by the user to the computer.
A computer is an electronic device working under the control of instructions given by the user to solve a problem. A computer accepts input data, processes the data and produces output.
A computer can do arithmetic and logical computations at a fast speed.
A computer works according to the data and instructions supplied to it. Therefore, if you give garbage, the computer produces garbage.
How many parts are there in a computer
A computer has mainly three important parts –
- Input
The input unit is one that gets input data and instructions to process. Examples of input units are mouse, scanner, microphone, keyboard, etc.
- Output
The output unit is one that displays output information. Examples of output units are monitor, speaker, printer, plotter, etc.
- Central processing unit
Central processing is called CPU. CPU has further three units –
- Memory
A memory unit is used to store data and instructions
- Arithmetic Logical Unit
Arithmetic Logical Unit is called ALU. ALU do all the arithmetic and logical calculations to produce output
- Control Unit
A control unit controls all the working of the memory and ALU unit.
What are the types of computer
A computer has mainly three types
Analog computer
Analog computer is one that uses the continuously changeable data such as electrical, mechanical or hydraulic quantities to solve the problems. Examples of analog devices are speedometer, devices which measure pressure, temperature, etc.
Digital computer
A digital computer is one that processes the information in a discrete form. A digital computer operates on arithmetic symbols, alphabets, decimal digits, etc that are represented in binary digits 0 and 1.
Examples of a digital computer are IBM PC and smartphones.
Hybrid computer
Hybrid computers are those that process digital as well as analog data.
What is an example of a digital computer
Example of a digital computer is IBM Personal Computer, Macintosh computer, and smartphones.
What are the parts of the computer
Parts of a computer include Input unit, memory unit, and output unit.
What is the main part of the computer
The main part computer is the Central Processing Unit or CPU. CPU has three sub-parts that are Memory unit, Arithmetic and Logical Unit and Control Unit.
Which part is the heart of a computer
The heart of the computer is the CPU. This is also called the brain of the Computer.
What is the characteristic of computer
The important characteristics of the computer are as below-
- Speed
- Accuracy
- Reliability
- Memory
- Versatility
- Automatic processing
- Process volume of data without getting bored
What are the advantages of computer
Advantages of computer are as below –
- Speed
- Accuracy
- Repeated work
- Automatic work
- Process a large amount of data
What do you mean by data Or
What is data in Computer
Data means a collection of facts such as numbers, letters, symbols, images, etc. which has no meaning until not processed.
What are data and information
Or What is data and information in DBMS
Processed data is information. For example, Ram and 20, are data and Ram secured 20 marks is information.
What is byte
The collection of 8 bits is called byte. A byte is a unit of 8 bits that are processed at a time.
What is byte code in java
Java byte code is generated as a result of java source file compilation in order to execute on java virtual machine to obtain a result.
What is a bit
A bit is a short form of binary digits. It is the smallest unit that is processed via computer.
What is nibble in computer language
The collection of 4 bits makes one nibble.
What is the word
In a computer system, a word is a unit comprising bits of a defined size that can be addressed and transferred between the storage device and the computer processor in order to process the data.
According to the computer architecture, the size of a word can be 16 bits, 32 bits, 64 bits or more.
What is word art
WordArt is a text feature in Microsoft Word. Microsoft word is word processing software.
WordArt includes text effects such as outlines thickness, shadowing, colors, gradients effects, and 3D effects, etc.
These effects can be to the text to make the text more artistic and impressive. This text can be bend, stretch, skew, etc.
What is a word processor
Word processor is text processing systems. An example of a word processor is ms word.
What is WordPress
WordPress is a content management system. It is popularly used to make websites.
What is word wrap
Word wrap is a feature of Microsoft Word, word processing software. The feature forces a text to be confined within specifically defined margins.
When a line of text is completed, the word processor automatically shifts the text to the next line, therefore, the user doesn’t require to press the return key after typing each line.
On the Format tab of the software program, click the Wrap Text option given in the Arrange group. A drop-down menu will appear.
Hover the mouse over the text wrapping options. A preview of the text wrapping will appear in the given text.
What is file
A file is a collection of records stored electronically in computer memory. Record is a collection of data and data means raw facts.
What is a file management
File management means updating a file. It includes editing a file, inserting more data, deleting useless data, etc., for future use.
What is file handling
File handling means to update a file with the help of a program developed in any programming language. These program stored data into the file and also update the file as and when needed.
What are the basic file operations?
Basic file operations include the following
- Insertion of data into the file
- Deletion of data
- Modification in the data
What is a file system
In Computer Science a file system is the software program responsible to organize and store files in the hard disk. Files are named and stored in directories and subdirectories.
What are files and folder
A file is a collection of data. File folders are directories where these files are kept for future use.
What is notepad
Notepad is a text editor which allows user to make text document. Notepad also allows various text manipulation functions such as cut, copy, paste, delete text, etc.
What do you mean by input
Input refers to enter information using any input device such as keyboard, mouse, microphone, et.c
What is input and output definition
Input refers to enter data into the computer’s memory for processing and to get the desired output. Output refers to the results which we get by the output device after processing.
What are virus and antivirus
Virus
A computer virus is a program code written by a person for malicious intent. Virus code replicates itself to other programs stored in the computer such as the boot sector of the computer.
It changes the working of the computer without the knowledge of the admin of the computer.
Antivirus
Antivirus is a software utility program. The purpose of the antivirus is to protect the computer from the virus infection. Antivirus finds and removes the virus if any on the computer.
What is blockchain or Blockchain technology
Blockchain is a kind of data structure. Blockchain keeps records of transactions and also simultaneously ensures the security, transparency decentralization of the records.
Hence, it is a chain of records that are stored in the blocks. All the chain of blocks is controlled by the central authority.
What is bitcoin
Bitcoin is a digital currency that came into origin in 2009. Bitcoin is used to sell and purchase items from the people and companies who are ready to accept bitcoin.
Bitcoin is stored in a “digital wallet”. A digital wallet is an app on a Smartphone or computer.
People can do the sale and purchase through bitcoins. Its every transaction is stored in a public list called Blockchain.
What is an operating system
An operating system is a software program that provides an interface between user and computer.
The operating system also makes hardware capable to interact with other software programs and tools.
What are the major differences between system software and application software
System Software
The software program that comprises the operating system, utility tools, configuration files, system services, and drivers are called system software. Examples are operating systems, linkers, loaders, compilers, interpreters, assemblers, debuggers, etc.
The system software provides an interface and environment to run application software.
Application software
Applications software are those which are used to solve business problems and all the problems of the users. Examples of applications software are Microsoft word, spreadsheets, web browsers, Adobe Photoshop, database management software, and other business software, etc.
Which one is the computer’s own language
Binary language is the computer’s own language
Who is the father of Computer
Charles Babbage
What is microprocessor
A microprocessor is an integrated circuit (IC). The microprocessor does the main functions of the central processing unit (CPU).
A microprocessor is a programmable multipurpose silicon chip which has a clock, and registers.
It accepts binary data as input and provides output in binary form according to the set of instructions stored in the memory.
What is the meaning of URL
URL means uniform resource locator
What is UNIX
Unix is an operating system
What is RAM
In Computer Science RAM is random access memory. RAM can be accessed randomly therefore, called random access memory. RAM is also a read-write memory. RAM is read and written by the user.
What is ROM
In Computer Science ROM is a read-only memory. ROM cannot be written by the user. Rom is provided by the manufacturer of the computer system
What is BIOS
BIOS is the Basic Input-Output system of the computer. In Computer Science BIOS is a program written in the ROM chip that is embedded in the motherboard.
Important functions of BIOS are as below-
- POST
BIOS checks the computer system and ensure no error is there before loading the operating system.
- Bootstrap Loader
BIOS find the operating system and give control to the operating system
- BIOS Drivers
BIOS loads all the basic drivers that are essential to work on the computer.
- BIOS Setup
Configure a computer system and do the set of basic functions such as date and time.
What is the primary memory
Primary memory is RAM
What is secondary memory
Secondary memory can be a hard disk, magnetic tapes, floppies, etc.
What is printer
A printer is an output device that is used to take a hard copy of a printout.
Computer Science Interview Questions may differ according to your profile in which you are going to be selected. But all the above questions must be prepared before going for Computer Science Interview.