Question Discussion & Solution

The correct answer is www.twitter.com.

Key Points

• Twitter
  • It is an American microblogging and social networking service.
  • It was created by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams in March 2006 and launched in July of that year.
  • Registered users can post, like, and retweet tweets, but unregistered users can only read those that are publicly available.

Important Points

• In July 2016 Flipkart acquired Jabong through its unit Myntra for about $70 million.
  • In February 2020, Flipkart formally shut down Jabong to shift focus completely on its premium clothing platform Myntra.
  • Jabong was an e-shopping website.
• Flipkart and Pepperfry are e-shopping websites too.

The correct answer is 2.

Key Points

• There are 2 control (Ctrl) keys on the keyboard.
• There are 2 Shift keys on the keyboard.
•  A Control key Ctrl is a modifier key that, when pressed in conjunction with another key, performs a special operation (for example, Ctrl + C ).
• Similar to the Shift key, the Control key rarely performs any function when pressed by itself.

Additional Information

• Longest key in keyboard - Space bar
• There is a total of 104 keys on the standard keyboard.
• Print Screen, Scroll Lock, Pause, Break, Insert, Home, Page Up, Delete, End, and Page down is all examples of control keys.  

The correct answer is Understanding.

Key Points

• UNDERSTANDING:
  • It is a thing that is not performed by machines but requires the human touch.
  • Machines like computers, etc. work according to the commands given to them and can not analyze the action on their own.
  • Thus, understanding is the work not done by a computer.

Additional Information

• COMPUTING:
  • Computing in its absolute terms means using computers for processing data or performing calculations.
  • It can be defined as the process of using computer technology to complete a given goal-oriented task using algorithms.
• PROCESSING:
  • It is the process by which the CPU (Central Processing Unit) of the computer converts the data received into information.
  • In other terms, it may be defined as the action or series of actions undertaken by the CPU to convert data into information.
  • It is for this reason the CPU is regarded as the 'brain' of the computer.
  • The general steps involved in the processing are - fetch, decode, execute, and write back.
• ​OUTPUTTING:
  • ​Output is the result given by a computer after processing the data and the process of delivering the output is termed as 'outputting'.
  • Output is most commonly displayed on the computer screen.
  • The devices capable of showing the output are - Monitor, Printer, Plotters, Speakers, Speech synthesizers, etc.

The correct answer is DBMS.

Key Points

• A Database is an organized collection of data so that it can be easily accessed and managed.
• DBMS stands for Database Management System.
• A Database Management System (DBMS) is software designed to store, retrieve, define, and manage data in a database.
• Database Management System removes redundancy and Integrity.
• Database Management System reduces Application Development Time.
• DBMS follows the concepts of Atomicity, Consistency, Isolation, and Durability (normally shortened as ACID).
• DBMS supports a multi-user environment and allows them to access and manipulate data in parallel. 
• Types of DBMS Systems are:
  • Hierarchical Database
  • Network Database
  • Relational Database
  • Object-Oriented Database
• The three-schema architecture of DBMS:

• Some popular DBMS systems:
  • MySQL
  • Microsoft Access
  • Oracle
  • LibreOffice Base
  • Microsoft SQL Server

​Important Points 

• In 1960, Charles Bachman designed the first DBMS system.
• In 1970, Codd introduced IBM'S Information Management System (IMS)
• In 1976, Peter Chen coined and defined the Entity-relationship model also know as the ER model.
• In 1991, Microsoft ships MS Access, a personal DBMS and that displaces all other personal DBMS products.

​​​​ Additional Information 

• Operating System
  • ​An operating system acts as an intermediary between the user of a computer and computer hardware.
  • Operating systems were first developed in the late 1950s to manage tape storage.
  • The General Motors Research Lab implemented the first OS in the early 1950s for their IBM 701.
  • Operating System allows disk access and file systems Device drivers Networking Security.
  • Operating System Handling I/O operations.
  • Operating System has error detection and handling technic.
  • An Operating System is concerned with the allocation of resources and services, such as memory, processors, devices, and information. 
  • The Kernel is the central component of a computer operating system.
• ​Compiler
  • The compiler translates source code written in a high-level language into a set of machine-language.
  • Compilers are very large programs, with error-checking and other abilities.
  • The object code is machine code that the processor can perform one instruction at a time.
  • The first Autocode and compiler in the modern sense were developed by Alick Glennie in 1952.
  • John W. Backus at IBM introduced the first commercially available compiler, in 1957.

The correct answer is Mailing Tab > Start mail merge group > Start mail.

Key Points

• Mail Merge
  • It consists of combining mail and letters and addressed envelopes or mailing labels for mass mailings from a form letter.
  • This feature is usually employed in a word processing document which contains fixed text and variables.
• Mail Merge is a useful tool that allows you to produce multiple letters, labels, envelopes.
• It also has name tags and more using information stored in a list, database, or spreadsheet.
• When performing a Mail Merge, we will need a Word document.
• We can start with an existing one or create a new one.
• We also need a recipient list, which is typically an Excel workbook or we will create it by selecting the Recipient option.
  • Where we will write the name, address, and mail of each recipient.

Additional Information

• MS Word
  • It is developed by Microsoft.
  • It was released on 25 October 1983 for the first time.
  • It is a graphical word processing program that users can type with.
  • It has helpful tools to make documents, resumes, contracts.
  • This is one of the most commonly used programs under the office suite.