Networking Fundamentals
Networking Fundamentals. Page 2. © 2006 Cisco Systems Inc. All rights reserved What is a Network? • A network refers to two or more connected computers that.
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Computer. Networks Multiple Choice Questions and Answers (MCQs) PDF download a book to practice quiz questions and answers on chapters: Analog transmission
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A computer network (Figure 10.2) is an interconnection among two or more computers or computing devices. Such interconnection allows computers to share data and
Basic Networking Concepts
-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
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Apr 11 2020 Here are some of the things you will find in this book: An introduction to computer networking. What you need to set up a network The basics of.
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COMPUTER NETWORKS [R15A0513] LECTURE NOTES MALLA
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Where those designations appear in this book and the publisher was aware of a trademark claim
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Computer Networks (CN). This unit has been divided into two chapters (chapters 11-12). It covers computer networks" basics such as types of networks cloud
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Networking Fundamentals
What is a Network? • A network refers to two or more connected computers that can share resources such as data a printer
Basic Networking Concepts
-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
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aspects of this book: its top-down approach its focus on the Internet and a modern treatment of computer networking
Computer Basics
No part of this publication may be reproduced transmitted
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Computer Networks. 3-1. Information Security. 3-0. Final Year Project. 0-6. Total. 39 (27-12). General Education Courses. Course Title. Credit hours.
CURRICULUM OF COMPUTER SCIENCE SOFTWARE
Computer Networks. 3-1. Information Security. 3-0. Final Year Project. 0-6. Total. 39 (27-12). General Education Courses. Course Title. Credit hours.
1 Introducing Basic Network Concepts
However this book will focus on computer networks—connecting computers and having them communicate with each other. Computer Networks. A computer network
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21-Apr-2004 Who Ought to Read This Book. Stuff You'll Find in This Book. For More Information… Part I. Networking Basics. Chapter 1. What Is a Network?
Basic Networking Concepts1. Introduction
2. Protocols
3. Protocol Layers
4. Network Interconnection/Internet
21. Introduction-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.Example: 204.160.241.98
-Some networks also provide names that humans can more easily remember than numbers. Example: www.javasoft.com, corresponding to the above numeric address.NICaddr1
NICaddrN
NICaddr2
3AddressingInternet address
Consists of 4 bytes separated by periods
Example:
136.102.233.49
-The R first bytes (R= 1,2,3) correspond to the network address; -The remaining H bytes (H = 3,2,1) are used for the host machine. InterNIC Register: organization in charge of the allocation of the address ranges corresponding to networks. -Criteria considered:Geographical area (country)
Organization, enterprise
Department
HostDomain Name System (DNS)
-Mnemonic textual addresses are provided to facilitate the manipulation of internet addresses. -DNS servers are responsible for translating mnemonic textual Internet addresses into hard numeric Internet addresses. 4 Ports -An IP address identifies a host machine on the Internet. -An IP port will identify a specific application running on an Internet host machine. -A port is identified by a number, the port number. -The number of ports is not functionally limited, in contrast to serial communications where only 4 ports are allowed. -There are some port numbers which are dedicated for specific applications.79Finger23Telnet110POP3 (e-mail)25SMTP (e-mail)70Gopher20 and 21FTP80HTTPPort numbersApplications
5 Data Transmission-In modern networks, data are transferred using packet switching. -Messages are broken into units called packets, and sent from one computer to the other. -At the destination, data are extracted from one or more packets and used to reconstruct the original message. -Each packet has a maximum size, and consists of a header and a data area. -The header contains the addresses of the source and destination computers and sequencing information necessary to reassemble the message at the destination.quotesdbs_dbs3.pdfusesText_6[PDF] computer networking basics sinhala pdf
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