DCCN PDF Notes Complete - JNTU Topics Covered - DCCN Pdf notes Complete of JNTU are listed below: Data Communication And. Data communications are the exchange of data between two devices via some form of transmission medium such as a wire cable. For data communications to. DOC/DOC ISBN ISBN-to Publisher: Alan R. Apt. Developmental Editor: Rebecca Olson. Executive.
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Note for Data Communication and Computer Network - DCCN By Punyatoya Panigrahi. Note for Data Communication and Computer Network - DCCN By vtu rangers. Note for Data Communication and Computer Network - DCCN By Amitabh Sharma. COMPUTER NETWORKS. Lecture Notes. DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING. SHRI VISHNU ENGINEERING COLLEGE FOR WOMEN. Data Communication and Computer Networks Notes file (DCCN pdf Notes) Data Communication and Computer Networks Notes – DCCN.
Network topologies and types Topology: Data channel: Microwave Wave: Ethernet Card: Circuit Switching:
Ethernet Card: A hub is a hardware device used to connect several computers together. Hubs can be either active or passive. Hubs usually can support 8, 12 or 24 RJ45 ports.
A switch switching hub is a network device which is used to interconnect computers or devices on a network. It filters and forwards data packets across a network. The main difference between hub and switch is that hub replicates what it receives on one port onto all the other ports while switch keeps a record of the MAC addresses of the devices attached to it. A repeater is a network device that amplifies and restores signals for long distance transmission.
Topology refers to the way in which the workstations attached to the network are interconnected. The BUS Topology: Each computer performs its task of sending messages without the help of the central server.
However, only one workstation can transmit a message at a particular time in the bus topology. A STAR topology is common in homes networks where all the computers connect to the single central computer using it as a hub.
It consists of groups of star — configured workstations connected to a bus backbone cable.
It is generally limited to a geographic area such as writing lab, school or building. It is generally privately owned networks over a distance not more than 5 Km. MAN is the networks cover a group of nearby corporate offices or a city and might be either private or public.
These are the networks spread over large distances, say across countries or even continents through cabling or satellite uplinks are called WAN. A Personal Area Network is computer network organized around an individual person. It generally covers a range of less than 10 meters.
Personal Area Networks can be constructed with cables or wirelessly. TCP — is responsible for verifying the correct delivery of data from client to server. Data can be lost in the intermediate network.
TCP adds support to detect errors or lost data and to trigger retransmission until the data is correctly and completely received. IP — is responsible for moving packet of data from node to node.
IP forwards each packet based on a four byte destination address the IP number. The Internet authorities assign ranges of numbers to different organizations. The organizations assign groups of their numbers to departments. IP operates on gateway machines that move data from department to organization to region and then around the world. It is an older internet utility that lets us log on to remote computer system. It also facilitates for terminal emulation purpose.
Terminal emulation means using a pc like a mainframe computer through networking. Mobile computing means that the computing device is not continuously connected to the base or central network. In covered areas, cell phone users can buy one phone that will work any where the standard is supported.
It uses narrowband TDMA, which allows eight simultaneous calls on the same radio frequency. CDMA does not assign a specific frequency to each user. Instead ,every channel uses the full available spectrum.
WLL is a system that connects subscribers to the public switched telephone network using radio signals as a substitute for other connecting media. Video Conferencing: SMS is the transmission of short text messages to and from a mobile pone, fax machine and or IP address.
Two computers are said to be interconnected if they are capable of sharing and exchanging information.
Different types are: Measurement Units: Network devices: A gateway is a device that connects dissimilar networks. Network topologies and types Topology: It defines the standardized format for data packets, techniques for detecting and correcting errors and so on. A network can be defined as a group of computers and other devices connected in some ways so as to be able to exchange data.
Each of the devices on the network can be thought of as a node; each node has a unique address.
Addresses are numeric quantities that are easy for computers to work with, but not for humans to remember. Some networks also provide names that humans can more easily remember than numbers.
Udp, the Internet Transport Protocols: Share this article with your classmates and friends so that they can also follow Latest Study Materials and Notes on Engineering Subjects.
For any query regarding on Computer Network Pdf Contact us via the comment box below. Leave A Reply Cancel Reply. Save my name, email, and website in this browser for the next time I comment. Notify me of follow-up comments by email. Notify me of new posts by email. Content in this Article. Related Topics. Computer Networks Syllabus- B.
Define Encapsulation and Peer to Peer communication in the layered architecture. With neat sketch Explain Packet switching technique in detail. Give brief explanation about copper cables with neat sketch. Describe the stop and wait for protocol with neat sketch.