Solution: Email is transmission of files and messages through computer network. 

Solution: Ctrl + 2 is the shortcut key to make text bold in Excel 

Solution: We can use the filters to block Web pages or websites that contains objectionable content or advertisement. 

Solution: Download refers to the process of obtaining software or other files on your computer from a computer network or the Internet. 

Solution: Software is a set of computer programs used on a computer to help perform tasks. Computer software, or simply software, is that part of a computer system that consists of encoded information or computer instructions, in contrast to the physical hardware from which the system is built. 

Solution: A motherboard is that part of a CPU which coordinates all the activities of a computer system. Various types of hardware are attached on the motherboard to facilitate these activities. 

Solution: A computer system includes hardware components, software, peripheral devices. 

Solution: A light pen is a pointing device that uses a photoelectric (light-sensitive) cell to indicate a position on the display screen. 

Solution: A router is used to route data packets between different networks. It reads the information in each packet to tell where it is going. If it is destined for an immediate network it has access to, it will strip the outer packet (IP packet for example), readdress the packet to the proper Ethernet address, and transmit it on that network. 

Solution: A Graphical User Interface (GUI) is a usual interface that allows users to interact with the computer through graphical elements such as pictures and animations. 

Solution: System software is developed to serve as a bridge between the hardware and the user, as the software directly communicates with the hardware. Operating systems and debuggers are two best examples of system software. 

Solution: A watermark is a ghost text that is set behind the content of a page. 

Solution: An icon is a small graphical representation of a program or file that, when clicked on, will be run or opened. 

Solution: An applet is a program that runs in a Web browser. An applet can be a fully functional Java application because it has the entire Java API at its disposal. 

Solution: Fingerprints are one of many forms of biometric used to identify individuals and verify their identity. 

Solution: The File Transfer Protocol (FTP) is a standard network protocol used to transfer computer files between a client and server on a computer network. 

Solution: Page Layout is used may be used to change page-size and margins. 

Solution: P2P stands for Peer to Peer. 

Solution: ADP is a data file format created by Microsoft Access. 

Solution: Spyware is a software that enables a user to obtain covert information about another’s computer activities by transmitting data covertly from their hard drive. 

Solution: Logical errors occur when the program runs without crashing, but produces an incorrect result. The error is caused by a mistake in the program’s logic. 

Solution: JPG, GIF, BMP are graphical file extensions 

Solution: F12 functional key displays save-as dialog box. 

Solution: A network is interconnection of two or more computers. 

Solution: A relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as invented by E. F. Codd. Relational databases have often replaced legacy hierarchical databases and network databases because they are easier to understand and use. 

Solution: Formatting refers to changing font, font-size, indentation, appearance of the text. 

A superclass passes its characteristics to it’s subclass in concept of inheritance in programming languages.

RT Linux is a hard real time RTOS microkernel that runs the entire Linux operating system as a fully preemptive process. The hard real-time property makes it possible to control robots, data acquisition systems, manufacturing plants, and other time-sensitive instruments and machines from RTLinux applications.

In computer networking and telecommunications, a gateway is a component that is part of two networks, which use different protocols. The gateway will translate one protocol into the other.

In computer storage media, WORM (write once, read many) is a data storage technology that allows information to be written to a disc a single time and prevents the drive from erasing the data. The discs are intentionally not rewritable, because they are especially intended to store data that the user does not want to erase accidentally.