DOS (Disk operating system) is an operating system that runs from a hard disk drive. The term can also refer to a particular family of disk operating system, most commonly MS-DOS( Microsoft Disk operating system )

Taskbar It is located at the bottom of the screen which contains the Start button, shortcuts to applications, date, time etc.

Taskbar : A bar located at the bottom of the screen first introduced with Microsoft Windows 95 and found in all the versions of Windows that followed. The taskbar allows you to locate and launch programs through the Start button or view any program that is currently open. It also allows them to check the date and time, items running in the background through the Notification Area, and with early versions of Windows access to the Quick Launch.

Word processor is an application software, which is capable of creating ,editing, saving,and printing documents.
It's features are:
1.Ease and speed: an word processor provides an easier and faster method to type the text.
2.Editing feature:using a word processor ,you can apply editing operations to the text.
3.Storage:it stores all your documents for future use.
4.Graphic feature: you can add pictures, drawings,and charts, etc.,to your document.

Word processor is an application software, which is capable of creating ,editing, saving,and printing documents.
It's features are:
1.Ease and speed: an word processor provides an easier and faster method to type the text.
2.Editing feature:using a word processor ,you can apply editing operations to the text.
3.Storage:it stores all your documents for future use.
4.Graphic feature: you can add pictures, drawings,and charts, etc.,to your document.

Secure your computer physically by: Installing reliable, reputable security and anti-virus software. Activating your firewall, because a firewall acts as a security guard between the internet and your local area network.

Ans : Hang

In computing, a hang or freeze occurs when either a process or system ceases to respond to inputs. ... A hang may be temporary if caused by a condition that resolves itself, such as slow hardware, or it may be permanent and require manual intervention, as in the case of a hardware or software logic error.

Coaxial Cable 

Coaxial cabling has a single copper conductor at its center. A plastic layer provides insulation between the center conductor and a braided metal shield (See fig. 3). The metal shield helps to block any outside interference from fluorescent lights, motors, and other computers.

Computer networks help users on the network to share the resources and in communication. Can you imagine a world now without emails, online newspapers, blogs, chat and the other services offered by the internet?

The following are the important uses and benefits of a computer network.

File sharing: Networking of computers helps the network users to share data files.

Hardware sharing: Users can share devices such as printers, scanners, CD-ROM drives, hard drives etc. Without computer networks, device sharing is not possible.

Application sharing: Applications can be shared over the network, and this allows to implement client/server applications

User communication: Networks allow users to communicate using e-mail, newsgroups, and video conferencing etc.

 A group of computers which are connected to each other and follow similar usage protocols for the purpose of sharing information and having communications provided by the networking nodes is called a Computer Network. 

A network may be small where it may include just one system or maybe as large as what one may want. The nodes may further be classified into various types. These include:

• Personal Computers
• Servers
• Networking Hardware
• General Hosts

The Internet is a massive network of networks. It connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet.

1. Uses of the Internet for business promotion and digital marketing

2. Uses of the Internet in Students daily life

3. Uses of the Internet to increase the speed of daily tasks

4. Uses of the Internet for online selling or Shopping

5. Use of the Internet for research and development

Modems are generally classified by the maximum amount of data they can send in a given unit of time, usually expressed in bits per second (symbol bit(s), sometimes abbreviated "bps") or bytes per second (symbol B(s)).

• Information is a processed, organised data presented in a given context and is useful to humans.
• Information is a group of data that collectively carry a logical meaning.
• Information depends on data.
• Example: The average score of a class is the information derived from the given data.

1. Data is unorganised raw facts that need processing without which it is seemingly random and useless to humans
2. Data is an individual unit that contains raw material which does not carry any specific meaning.
3. An example of data is a student’s test score

Ans: DBMS

MICROSOFT ACCESS is a Database Management System offered by Microsoft. It uses the Microsoft Jet Database Engine and comes as a part of the Microsoft Office suite of application.

Microsoft Access offers the functionality of a database and the programming capabilities to create easy to navigate screens (forms). It helps you analyze large amounts of information, and manage data

A n s w e r 
feature that influence our communication perspective
Facial expressions.
Head and neck signals.
General body postures.
Gestures.
Handshakes.
Breathing.
Different physical movements.
O c u l e s i c s.

Operator types. You can use the following operator types in LibreOffice Calc: arithmetic, comparative, text, and reference.