| Class XII |
Computer Science |
Computer Science |
10 |
have already discussed that a number of computing devices are connected together to form a Local Area Network (LAN), and interconnections among mil... |
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| Class XII |
Computer Science |
Computer Science |
10 |
10.6 I dentifying N odes in a N etworked C ommunication Each node in a network should be uniquely identified so that a network device can identify ... |
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| Class XII |
Computer Science |
Computer Science |
10 |
is a 32 bit numeric address, written as four numbers separated by periods, where each number is the decimal (base-10) representation for an 8-bit b... |
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| Class XII |
Computer Science |
Computer Science |
10 |
of computer communications. It is being used by everyone in the society as is evident from the increasing use of online tools for education, creati... |
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| Class XII |
Computer Science |
Computer Science |
10 |
set of rules which is used to retrieve linked web pages across the web. The more secure and advanced version is HTTPS. 196 C omputerScienc- ClasXII... |
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| Class XII |
Computer Science |
Computer Science |
10 |
Instead of remembering IP addresses, we assign a domain name to each IP. But, to access a web resource, a browser needs to find out the IP address ... |
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| Class XII |
Computer Science |
Computer Science |
10 |
entry can be searched. S ummary • A computer network is an interconnection among two or more computers or computing devices. • A computer network a... |
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| Class XII |
Computer Science |
Computer Science |
10 |
wired network. • Each NIC has a MAC address, which helps in uniquelyidentifyingthecomputeronthenetwork. • A repeater is an analog device that regen... |
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| Class XII |
Computer Science |
Computer Science |
10 |
address can change if a node is removed from one network and connected to another network. • The Internet is the global network of computing device... |
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| Class XII |
Computer Science |
Computer Science |
10 |
network topologies? 8. How is tree topology different from bus topology? 9. Identify the type of topology from the following: a) Each node is conne... |
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| Class XII |
Computer Science |
Computer Science |
11 |
p te ha r C Data Communication “Peoplealreadyhavebionicarmsandlegsthat workbythepowerofthought.Andweincreasingly outsourcementalandcommunicativeact... |
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| Class XII |
Computer Science |
Computer Science |
11 |
phone, smartwatch, walkietalkie, video recording device, etc. Receiver: A receiver is a computer or any such device which is capable of receiving d... |
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| Class XII |
Computer Science |
Computer Science |
11 |
Data travels in the form of signals over a channel. One signal carries one or more bits over the channel. Data transfer rate is the number of bits ... |
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| Class XII |
Computer Science |
Computer Science |
11 |
11.3: Simplex communication 11.4.2 Half-duplex Communication Itistwowayorbidirectionalcommunicationbetweentwo devices in which both the devices can... |
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| Class XII |
Computer Science |
Computer Science |
11 |
solution is designed to to make a dedicated connection between each pair of deliver both voice and multimedia devices (mesh topology) or between a ... |
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| Class XII |
Computer Science |
Computer Science |
11 |
packet. On completion of the transmission, the channel is available for transfer of packets from other communicating parties. 208 ComputerScience- ... |
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| Class XII |
Computer Science |
Computer Science |
11 |
used guided/wired media for data transmission are, twisted pair, coaxial cable, and fiber optic cable. Twisted-pair and coaxial cable carry the ele... |
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| Class XII |
Computer Science |
Computer Science |
11 |
Insulating Material Figure 11.10: A coaxial cable Data Communication 211 Reprint 2026-27 (C) Optical Fibre The optical fiber cable carries data as ... |
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| Class XII |
Computer Science |
Computer Science |
11 |
waves, Microwaves, Infrared waves and Visible or service providers. Light waves, according to their frequency ranges. Some C omputerScience- ClasXI... |
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| Class XII |
Computer Science |
Computer Science |
11 |
transmit and receive data. These devices can send data within a range of 10 meters with a speed of 1 - 2 Mbps. In Bluetooth technology, the communi... |
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| Class XII |
Computer Science |
Computer Science |
11 |
is a communication protocol which establishes a dedicated and direct connection between two communicating devices. This protocol defines how two de... |
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| Class XII |
Computer Science |
Computer Science |
11 |
Internet in public places Interoperability for Microwave 11.7 M obile Telecommunication T echnologies Access. Like Wi-Fi, it is also used for Today... |
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| Class XII |
Computer Science |
Computer Science |
11 |
phone. It facilitated greater voice and data capacity. Therefore, more simultaneous calls could happen in the same frequency range and also a signi... |
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| Class XII |
Computer Science |
Computer Science |
11 |
the speed of 512 Mbps. In this case, Computer B must be able to inform computer A about the speed mismatch so that computer A can adjust its data t... |
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| Class XII |
Computer Science |
Computer Science |
11 |
HTTP is between a web browser (client) and a web server (server). HTTP facilitates access of hypertext from the World Wide Web by defining how info... |
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