Page 1 :
Chapter 16: Networking Fundamentals, A. Select the correct option., 1. When two or more Local Area Networks are combined together, you get a ………………………………………  WAN, 2. Computers are connected together to share .……………………………………… . Software, 3. IP stands for ……………………………………… . Internet Protocol, 4. A device that makes the digital signals from a computer suitable for transmission over the internet, is  called a ……………………………………… .  Modem, 5. The earliest type of internet connection was the ……………………………………… connection. c. Dial-up, 6. The TCP/IP uses ……………………………………… switching technique to transfer message through the  internet., Packet, B. Fill in the blanks., 1. A ……………………………………… infection on one computer in a computer network can quickly spread to all  the other computers.(Virus), 2. Special software must be installed on a computer network to prevent the breach of  ……………………………………….(Security), 3. The full form of TCP is ……………………………………….(Transmission Control Protocol), 4. Wi-Fi or ……………………………………… is a way of connecting to the internet wirelessly.(Hotspot), 5. A ……………………………………… is a physical location from where Wi-Fi access to the internet is  available.(Wireless Fidelity), 6. A ……………………………………… is known as a dumb switch.(Hub), C. Write T for True and F for False., 1. When two or more computer systems or other devices are connected together to interchange data, then it is known as a network.(True), 2. Backup is one of the disadvantages of a computer network.(False), 3. Modem and browser are the requirements to access the internet.(False), 4. WiMAX stands for world-wide interaction for microwave access.(False), 5. Private hotspot is not used in offices and homes.(False), 6. The device that routes the information around the network is called a router.(True), D. Answer the following questions., 1. What is Wireless Fidelity?, Ans: Wireless Fidelity is a popular technology through which computers and mobile devices exchange data, wirelessly over the network. Wireless internet connects a home or business organisation to the internet  using a radio link between the customer's location and the service provider's facility. Wi-Fi is generally used  to provide the internet connection to remote places, where it is difficult to use wires. Wi-Fi is also used  within smaller areas, like a home, an educational institute or a corporate office to provide wireless internet  to all the users there., 2. What is the difference between Repeater and Router?, 3. Explain data transfer in packet switching., Ans: Data in the internet refers to all the files, e-mails, web pages, etc. that you can see across the  internet. Data travels across the internet in packets. The information in the packet enables a computer  to understand how it assimilates with any other data, the origin or source of the data, and the data's  final destination. This technique is called packet switching and widely used for optimising data transfer  over a computer network., Let us understand this technique of data transmission., • When you send a message or an e-mail to another computer connected on the internet, the data in  the message or e-mail is first broken down into small data packets. Once the packets are ready, the  address of the sending and receiving computer is enclosed with the data packets., • When the data packets are received by a computer the data packets are again reassembled in a  way that they take the form of the original message. The data packets reach their destination using  different routes. The process is somewhat similar to sending parcel to your friend using a courier  service., 4. Name the different types of internet connections. Explain any two., Ans: The different types of connections for connecting to the internet are discussed asfollows:  Dial up connection, Digital Subscriber Line, Cable Internet, Satellite Connection, 3G, 4G, or 5G Systems,  Wireless Fidelity (Wi-Fi), WiMAX, Wi-Fi Hotspot, • Dial up Connection: This type of connection utilises the telephone lines but is not preferred these days as it is very slow. It allows the user to do one work at a time. One can either use the phone to  call or connect to the internet., • Digital Subscriber Line (DSL): It is also a type of connection that uses the telephone lines, but is  capable of transferring data at a much higher speed. A DSL filter removes the high-frequency  interference, thus enabling simultaneous use of the telephone and data transmission.