Understanding Computer Networks

This book looks at the basics of computer networks. It describes what networks are and how they work, the different kinds of network, and the difference between the Internet and the World Wide Web. It explains how to contact people online using email and social networks, shows how networks can be used to work with other people online, and touches on creating websites and blogs. The topics covered are illustrated with do's and don'ts, Did You Know? boxes and current developments in the world of computing.

This book looks at the basics of computer networks. It describes what networks are and how they work, the different kinds of network, and the difference between the Internet and the World Wide Web. It explains how to contact people online using email and social networks, shows how networks can be used to work with other people online, and touches on creating websites and blogs. The topics covered are illustrated with do's and don'ts, Did You Know? boxes and current developments in the world of computing.

Each book in this series looks at a different aspect of computing. The emphasis is on understanding the basic concepts rather than a step-by-step manual. The topics covered are illustrated with do's and don'ts, fact boxes, Did You Know? Boxes, current developments in the world of computing, case studies and suggestions for practising the techniques described.

Computer networks are everywhere, from your phone to your home to your office, and they're changing rapidly. This book makes sense of it all. The author - Hazim Gaber - has years of experience designing, installing, and troubleshooting computer networks for organizations large and small. Topic Include -Cabling -Network Design -OSI Model -Ports & Protocols -Services such as DHCP, DNS, NAT, Port Forwarding, VPN -IP Addressing & Subnetting -Routers, Switches, Load Balancer -IPv4 and IPv6 -Routing Algorithms -Switch & Router Configuration -VLANs -Wi-Fi Network Design -WANs & MPLS -Cellular Networks -Physical Security -Network Security -Wireless Security -Network Attached Storage (NAS) and Storage Area Networks (SANs) -Cloud -Virtualization -AAA & RADIUS -Disaster Prevention -Fault Tolerance & High Availability -Disaster Recovery -Business Continuity -Operating Agreements -Remote Access -Malware & Malware Prevention

Original textbook (c) October 31, 2011 by Olivier Bonaventure, is licensed under a Creative Commons Attribution (CC BY) license made possible by funding from The Saylor Foundation's Open Textbook Challenge in order to be incorporated into Saylor's collection of open courses available at: http: //www.saylor.org. Free PDF 282 pages at https: //www.textbookequity.org/bonaventure-computer-networking-principles-protocols-and-practice/ This open textbook aims to fill the gap between the open-source implementations and the open-source network specifications by providing a detailed but pedagogical description of the key principles that guide the operation of the Internet. 1 Preface 2 Introduction 3 The application Layer 4 The transport layer 5 The network layer 6 The datalink layer and the Local Area Networks 7 Glossary 8 Bibliography

Do you want to find out how a computer network works? Do you want to understand what it all takes to keep a home or office network up and running? This book is all you need! It will help you navigate your way to becoming proficient with network fundamentals and technology. When the first computers were built during the Second World War, they were expensive and isolated. However, after about twenty years, as their prices gradually decreased, the first experiments began to connect computers together. At the time, sharing them over a long distance was an interesting idea. Computers and the Internet have changed this world and our lifestyle forever. We just need to touch a small button and within a fraction of a second, we can make a call, send a file or video message. The major factor that lies behind this advanced technology is none other than computer network. That's why it's important to know how it works! Networking for Beginners covers the following topics: Networking Basics - This chapter considers the needs of a real beginner in computer networking and covers the following crucial topics: definition of computer networking, types of computer networks, network topologies, and network architecture. Network Hardware - A comprehensive discussion on different network components that include routers, hubs, switches, etc. Network Cabling - This chapter discusses the different cabling standards include coaxial, fiber optic cable, and twisted-pair copper cable. Wireless Networking - Fundamental technicalities of wireless technology that is of great significance to the entire computer networking discipline. This chapter offers important information on how to enjoy the benefits of Wi-Fi technology and how to set up and configure a computer for wireless connectivity. IP Addressing - This chapter pays great attention to the basics of IP addressing, and the different number systems (binary, decimal, and hexadecimal) IP Subnetting - Introduction to concepts of subnetting. Network Protocols - Various protocols of the TCP/IP suite. Internet Essentials - Different terminologies regarding the Internet, the worldwide web, and the history of the Internet. Virtualization in cloud computing - Concept of virtualization, its relevance in computer networking, and an examination of cloud services. Network Troubleshooting - This chapter considers troubleshooting as a top management function. NETWORKING FOR BEGINNERS is an easy-to-read book for anyone hungry for computer networking knowledge. The language used is simple, and even the very technical terms that pop from time to time have been explained in a way that is easy to understand.

Pick up where certification exams leave off. With this practical, in-depth guide to the entire network infrastructure, you’ll learn how to deal with real Cisco networks, rather than the hypothetical situations presented on exams like the CCNA. Network Warrior takes you step by step through the world of routers, switches, firewalls, and other technologies based on the author's extensive field experience. You'll find new content for MPLS, IPv6, VoIP, and wireless in this completely revised second edition, along with examples of Cisco Nexus 5000 and 7000 switches throughout. Topics include: An in-depth view of routers and routing Switching, using Cisco Catalyst and Nexus switches as examples SOHO VoIP and SOHO wireless access point design and configuration Introduction to IPv6 with configuration examples Telecom technologies in the data-networking world, including T1, DS3, frame relay, and MPLS Security, firewall theory, and configuration, as well as ACL and authentication Quality of Service (QoS), with an emphasis on low-latency queuing (LLQ) IP address allocation, Network Time Protocol (NTP), and device failures