Solutions of Computer Knowledge from Study Guide SBI PO Phase 2 Mains Examination 2019

This topic describes computers. It explains that a computer is an automatic and programmable electronic device that accepts data, internally stores, and executes a program of instructions. It mentions the functions and uses of computers in detail.

This topic provides knowledge of generations of computers. A tabular representation is given here, which talks about all five generations of a computer, year, switching device, storage device, speed, operating system, language, and applications.

This topic discusses the classification of computers. We will understand that their classification is based on size, processing speed, and cost. Classification of computers purpose-wise, memory size, and performance-wise are discussed here in detail.

This topic tells us about the uses of computers. We will understand the importance of computers in today's world. The benefits of computers in education, science, industry, government, health, entertainment, etc., are mentioned briefly.

This topic covers elements of the computing process. We will understand the computing process and its four key elements: hardware, software, data, and procedures. Each of these key elements is discussed briefly here.

In this topic, we will get to know about the programming languages of computers. Types of programming languages, program compilation and program interpretation, data, procedures, and decimal conversion to binary are also discussed here.

This topic discusses input and output units. It tells us about the input unit and output unit and their tasks along with examples. Some of the most commonly used input and output devices are described in detail, along with their functions.

This topic explains computer memory. We will understand about types of memory, which are primary memory and secondary memory. Also, the classification of these is discussed here briefly. The difference between RAM and ROM is also given here.

This topic tells about computer software. We will learn about parts of computer software such as system software and application software. We will also discuss the operating system, its main functions in detail.

In this topic, we will learn about some common operating systems. It explains application software, device, process, and file and memory management. Types of operating systems and user interfaces are explained here in detail.

In this topic, we will discuss application software. We will learn about the word processor, MS Excel, MS PowerPoint, MS Access, their characteristics, and features. Some shortcut keys and their description used in this software are also mentioned.

In this topic, we will acquire knowledge about data communication and network. It explains that networks are built on computer hardware and computer software. It also briefs us about signals and transmission, computer networks, and their types.

This topic discusses LAN Basics. It explains LAN, which connects network devices over a relatively short distance. We will learn about types of LAN such as Star LAN, Ring LAN, and Bus LAN in detail and how their stations are connected.

This topic covers WAN Basics. It explains that the Wide Area Network spans a large physical distance. It also tells us about applications of WANs connectivity. We will understand types of WAN such as Public Networks, PSTN, PSDN, and ISDN in detail.

This topic deals with Topology. A network topology is the physical layout of the network in which all the devices are connected. Types of topology, such as Bus Topology, Mesh Topology, Ring Topology, etc., are explained with suitable diagrams.

This topic tells about client-server networking. It is a network application that separates the client from the server. We will learn the properties of a server and client. Also, the sequence diagram is briefly discussed here.

In this topic, we will discuss modems. It explains that a modem is needed to translate between the analog phone line and a digital computer. We will understand the functions of the modem in detail here.

This topic explores Wi-Fi, which stands for Wireless Fidelity. We will learn about the uses of Wi-Fi in personal computers and other peripherals. We will also understand the difference between the internet, intranet, and extranet.

In this topic, we will understand the internet. Internet is a worldwide, publicly accessible network of interconnected computer networks that transmit data. We will study about uses of the internet, internet protocols, and internet structure.

This topic throws light on E-Mail. It explains that it is a concept of sending electronic text messages. We will learn about the worldwide web, its characteristics, and web browsers. Internet Access is also discussed here in brief.

This topic highlights the World Wide Web (www). It is a system of interlinked hypertext documents accepted via the internet and contain images, text, video, and other multimedia. Major web browsers such as Internet Explorer, etc., are also mentioned.

This topic highlights the computer viruses. We will know about how viruses are transmitted in computers. We will learn about the important facts related to computer viruses. Also, popular computer virus-like Nimada (2001), etc., are mentioned here.

This topic tells about computer security. It describes some approaches to improve computer security, including limited access to computers that will not compromise security and avoid depending on computer programs for computer security.

This topic sheds light on security tools. It explains some security tools such as firewalls, encryption, honeypots, pinging, cryptographic techniques, etc. We will learn about the functions and importance of security tools in brief.