Class Notes

---Communication Technologies--- Communication technologies refer to the tools, systems, and methods used to transmit, receive, and exchange information between individuals, organizations, or devices. These technologies have revolutionized the way we communicate, enabling faster, more efficient, and widespread interaction across vast distances. Examples of communication technologies include telephones, email, instant messaging, video conferencing, social media platforms, and mobile applications. They facilitate real-time or asynchronous communication, allowing people to connect, share ideas, collaborate, and disseminate information globally. With the rapid advancements in technology, communication technologies continue to evolve, offering increasingly sophisticated and diverse ways to connect and engage with others in our interconnected world. ---What is Computer?--- A computer is an electronic device that is capable of receiving, processing, storing, and outputting data. It is a ...

Answer Key Lesson -2 A. Tick the appropriate option from the following 1. All of these 2. Node 3. Firewall 4. All of these 5. Data theft B. Fill in the blanks with appropriate words: 1. Netwrok 2. Linear 3. Hardware 4. Internet 5. Resources C. Write 'T' for True statement and 'F' for False one : 1. False 2. True 3. True 4. False 5. True D. Define the following : 1. Software Sharing - Software sharing is the practice of sharing or offering access to digital information or resources, including documents, multimedia (audio/video), graphics, computer programs, images and e-books. 2. Switch and Router - A router's main objective is to establish a connection between various networks in a simultaneous manner whereas A switch's main objective is to establish a simultaneous connection among various devices. 3. MODEM - A combined device for modulation and demodulation, for example, between the digital data of a computer and the analogue sign...

Mobile technologies refer to the various technologies and applications designed to operate on mobile devices such as smartphones, tablets, and wearable devices. These technologies have revolutionized the way we communicate, access information, and perform tasks on the go. Mobile technologies encompass both hardware and software components, enabling features such as wireless communication, internet connectivity, mobile apps, and location-based services. They have transformed various sectors including communication, entertainment, commerce, healthcare, education, and transportation. Mobile technologies have empowered individuals with the ability to stay connected, access information, and perform a wide range of activities anytime and anywhere, making them an integral part of our modern digital lives. Mobile communication refers to the wireless transmission of voice, data, and multimedia using mobile devices. It utilizes cellular networks and technologies such as 3G, 4G, and 5G to en...

The Internet is a global network of interconnected computers and devices that enables the exchange of information and communication on a global scale. It facilitates access to vast amounts of data, online services, and connectivity, revolutionizing the way people communicate, collaborate, learn, and access information across the world. URL URL (Uniform Resource Locator) is a specific web address that provides a standardized way to locate resources on the internet. It consists of multiple components, including the protocol (e.g., http:// or https://), domain name, and path to the specific web page or resource. URLs allow users to access websites, documents, images, videos, and other online content. Search Engines: Search engines are online tools that help users find information on the internet by indexing and organizing web pages. They allow users to enter keywords or queries and provide relevant search results from their vast databases. Here are some merits and demerits of search...

The development of the internet has been a remarkable journey that has revolutionized the way we communicate, access information, conduct business, and interact with the world. Here's a brief overview of the key stages in the development of the internet: ARPANET: The precursor to the internet was ARPANET (Advanced Research Projects Agency Network), created by the U.S. Department of Defense in the late 1960s. It connected computers at various research institutions and allowed them to exchange information. TCP/IP: In the 1970s, the Transmission Control Protocol/Internet Protocol (TCP/IP) was developed. This set of protocols provided the foundation for data transmission and addressing on the network. NSFNET: In the 1980s, the National Science Foundation (NSF) developed NSFNET, a high-speed backbone network that connected universities and research institutions across the United States. It played a crucial role in expanding the internet's reach. Commercialization and World Wi...