Class name Subject Book title Chapter number Content Created at
Class XII Informatics Practices Informatics Practices 5 of MAN. This kind of network Reprint 2026-27 nternet anWeb 141 can be extended up to 30–40 km. Sometimes, many LANs are connected together to form ...
Class XII Informatics Practices Informatics Practices 5 analog signal and the medium (be it free-space or a physical media) carries the signal to the receiver. There are modems connected to both the sour...
Class XII Informatics Practices Informatics Practices 5 arriving on any of the lines are sent out on all the others. The limitation of hub 1 2 3 4 5 6 7 8 is that if data from two devices come at the sam...
Class XII Informatics Practices Informatics Practices 5 the network by a router. Reprint 2026-27 nternet anW eb 145 Figure 5.10: A Router An Internet service provider (ISP) is any A router can be wired o...
Class XII Informatics Practices Informatics Practices 5 and the firewall is usually integrated with it. 10.0.0.0/8 Server GATEWAY Server 20.0.0.0/8 IP ADDRESS IP ADDRESS PC 4 PC 5 PC 4 PC 5 PC 1 PC 2 PC ...
Class XII Informatics Practices Informatics Practices 5 (Figure 5.14), each communicating device connects to a transmission medium, known as bus. Data sent from a node are passed on to the bus and hence ...
Class XII Informatics Practices Informatics Practices 5 type of network, data transmitted from source first reaches the centralised device and from there the data passes through Figure 5.16: A hybrid top...
Class XII Informatics Practices Informatics Practices 5 web pages and web resources. The resources on the web can be shared or accessed through the Internet. Earlier,toaccessfilesresidingindifferentcompu...
Class XII Informatics Practices Informatics Practices 5 • HTTP — The HyperText Transfer Protocol is a set of rules which is used to retrieve linked web pages can be used to across the web. It’s more secu...
Class XII Informatics Practices Informatics Practices 5 user: 1. Creating an email, attaching files with an email, saving an email as draft for mailing later. Creating email is also termed as composing. ...
Class XII Informatics Practices Informatics Practices 5 Talk, Facebook Messenger, Google Hangout, etc., are examples of instant messengers. Some of these applications support instant messaging through al...
Class XII Informatics Practices Informatics Practices 5 on a web server. A visitor navigates from one page to another by clicking on hyperlinks. Also, all the pages of a website are integrated under one ...
Class XII Mathematics Mathematics Part-II 7 0.083approx. Thus, the probability that a person selected at random is actually having HIV given that he/she is tested HIV+ive is 0.083. Example19I...
Class XII Informatics Practices Informatics Practices 5 is a document on the WWW that is viewed in a web browser. Basic structureofawebpageiscreatedusingHTML(HyperText Markup Language) and CSS (Cascaded ...
Class XII Informatics Practices Informatics Practices 5 browser) for a static web page, it just locates the page on its storage media and sends it to the browser of the client. No additional processing i...
Class XII Informatics Practices Informatics Practices 5 Calls an application program in response to the HTTP request. STEP 1: HTTP Request Web Web Browser Browser STEP 4: HTTP Response STEP 3: The progra...
Class XII Informatics Practices Informatics Practices 5 onto the Internet, and make it a part of the World Wide Web. Once a website is created using a hardware server, we need to connect it to the Intern...
Class XII Informatics Practices Informatics Practices 5 our requirement, and get it registered through domain name Registrar. • Once we get web space, create logins with appropriate rights and note down ...
Class XII Informatics Practices Informatics Practices 5 browser has got certain settings that define the manner in which the browser will behave. These Mozilla Firefox is an open source settings may be w...
Class XII Informatics Practices Informatics Practices 5 which is needed to access all services given by Mozilla. Make the desired settings and close the browser settings window. The changes made in the b...
Class XII Informatics Practices Informatics Practices 5 it. This string of information gets stored in the First cookie form of a text file in the browser. The information stored software was is retransmi...
Class XII Informatics Practices Informatics Practices 5 geographical area like a city or a town. • WideAreaNetwork(WAN)connectscomputersand other LANs and MANs, which are spread across different geograph...
Class XII Informatics Practices Informatics Practices 5 message(s) through the Internet. • Chatting is communicating in real time using text message(s). • Voice over Internet Protocol (VoIP) allows you t...
Class XII Informatics Practices Informatics Practices 5 a local area network to the internet. e) The _____________ topology is of hierarchical nature. f) ____________________ is a standard naming convent...
Class XII Informatics Practices Informatics Practices 5 privacy settings of her browser. How can she accomplish her task? 16. Shubham wants to play a video in his browser but he is not able to do so. A m...