Question Discussion & Solution

The correct answer is Application software

Important Points

• MS Office, Photoshop, and Animagic are examples of Application software
• MS Office is a software bundle provided by Microsoft.
• It includes software like MS Word, MS Excel, MS Powerpoint, MS Outlook, MS Access, MS One Note, and others.

Additional Information

• Photoshop is a powerful photo editing tool by Adobe.
• An Operating System (OS) is an interface between a computer user and computer hardware.
• An operating system is software that performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.

The correct answer is the Mainframe computer.

Key Points

• Mainframe computers 
  • Mainframe computers are those having large internal memory storage and a comprehensive range of software.
  • Mainframe computer serves as a backbone for the entire business world.

Additional Information 

• Analog computer 
  • Analog computers are job-oriented computers. 
  • They carry out arithmetic and logical operations by manipulating and processing data.
• Hybrid computer 
  • Hybrid computers are a combination of analog and digital computers.
  • Machines used in hospitals like ECG and DIALYDID are the commonly used hybrid computers.
• Special Purpose Computer
  • It refers to computers that are built to perform specific tasks, such as automatic teller machines or washing machines.
  • Examples of Special Purpose Computers: Traffic-Light control systems, weather-forecasting simulators, 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 PDF.

Key Points

• Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1993 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.
• Based on the PostScript language, each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, vector graphics, raster images, and other information needed to display it. 

Additional Information

• DOC is the official document file used in Microsoft Word.
• A DOC file contains text, images, and graphs.
• It can be opened by many different programs and users can change printing options once it's opened.
• A TXT file is a standard text document that contains plain text.

The correct answer is Ctrl + D.

Key Points

• Use the Ctrl+D keyboard shortcut to quickly summon the Font dialog box.
• The best benefit of the Font dialog box is its Preview window, at the bottom.
• This window shows you exactly how your choices affect text in your document.
• The Font names +Body and +Heading refer to the fonts selected by the current document theme.

Additional Information

• Important Shortcut keys:
  • Cut the selected content to the Clipboard - Ctrl+X
  • Copy the selected content to the Clipboard - Ctrl+C
  • Paste the contents of the Clipboard -Ctrl+V
  • Increase the font size by 1 point.- Ctrl+]
  • Center the text - Ctrl+E.
  • Align the text to the left - Ctrl+L