Internet Concepts

3 Key excerpts on "Internet Concepts"

• 

  eBook - PDF

  Networking Explained

  • Michael Gallo, William M. Hancock PhD CISSP CISM, William M. Hancock, PhD, CISSP, CISM(Authors)
  • 2001(Publication Date)
  • Digital Press

    (Publisher)

  Chapter 1 Fundamental Concepts of Computer Networks and Networking In this chapter, we provide an overview of the various topics and concepts surrounding computer networks and networking. We begin by discussing some of the key issues related to networking. We follow this discussion with a formal definition of computer networks along with a description of the various terms related to this definition. As part of this dis-cussion, we also introduce basic networking vocabulary as well as several key networking concepts. Much of the material we present here is done so from a general perspective and is elaborated in subsequent chapters. Understanding this material is important because it serves as the underlying foundation of the book. An outline of the terms and concepts we define and discuss follows: • Concepts and Related Issues of Computer Networking (Questions 1–2) • Definition and Components of Computer Networks (Questions 3–9) • Network Protocols (Questions 10–12) • Network Media (Questions 13–14) • Applications vs. Application Protocols (Questions 15–19) • Interoperability (Questions 20–21) • Internet, internet (Internetwork), Intranet, Extranet (Questions 22–24) • LAN, MAN, WAN, PAN, GAN, SAN (Questions 25–27) • Decentralized vs. Centralized vs. Distributed Systems (Questions 28–30) • Client/Server, Peer-to-Peer, Servent, and WWW Network Models (Questions 31–41) • Network Appliances (Questions 42–44) • Serial and Parallel Communications (Questions 45–48) • Synchronous, Asynchronous, and Isochronous Communications (Questions 49–53) • Simplex, Half-Duplex, and Full-Duplex Communications (Questions 54–55) • Network Standards (Questions 56–64) 1 2 Networking Explained, Second Edition 1. The title of this book is Networking Explained .

  Sign up to read

  Learn more about book
• 

  No longer available |Learn more

  Discovering the Internet

  Complete

  • Jennifer Campbell(Author)
  • 2014(Publication Date)
  • Cengage Learning EMEA

    (Publisher)

  1. Discuss basic networking technologies 2. Describe the infrastructure of the Internet, including network service providers, the TCP/IP stack, IP addresses, and the Domain Name System (DNS) 3. Discuss GPS and identify wireless location-based services 4. Explain the convergence of the Internet with telephony and conferencing 5. Discuss internal and external network security threats, transactional risks, and virtual private networks 6 Understanding Internet Technologies and Security I ntroduction The Internet and the web include the networking technologies that make it possible to use Internet-based services. In Chapters 1 and 2, you learned about circuit switching, packet switching, the TCP and IP protocols, the Domain Name System (DNS), IP addresses, URLs, and other fundamental networking and Internet technologies. In this chapter, you will learn about local, metropolitan, and wide area networks and the devices that connect them; the structure of IP addresses; how the DNS server hierarchy resolves domain names to IP addresses; and how network service providers facilitate the exchange of data across the Internet backbones. You also will learn about wireless web location-based services, how the Internet communicates with traditional telephony and conferencing technologies, and about network security threats and security technologies. Objectives After completing this chapter, you will be able to: ©scyther5/Shutterstock.com Microsoft © Cengage Learning ® Foursquare © 2014 Copyright 2015 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.

  Sign up to read

  Learn more about book
• 

  eBook - ePub

  A Practical Introduction to Enterprise Network and Security Management

  • Bongsik Shin(Author)
  • 2021(Publication Date)
  • Auerbach Publications

    (Publisher)

  1  Networking

  Fundamental Concepts

  1.1 Introduction

  By definition, the computer network represents a collection of wired and wireless communication links through which computers and other hardware devices exchange data/information/messages. A network can be as small as the one installed in a house and as big as the Internet that spans the entire planet. The size of a particular network thus reflects the size of the place (e.g., building, campus) where it is installed. The wireless and wired network has become the artery of an organization (e.g., company, university) and the society, revolutionizing every facet of our life by facilitating resource (e.g., storage) sharing and the exchange of data (e.g., texts, videos, music) in an unprecedented manner. Throughout the book, the three terms of data, information, and message are used synonymously, although, strictly speaking, information is a higher-level abstract derived from data by processing, enriching, and organizing them.

  With the rapid advancement of information and communication technologies (or ICTs), more electronic and mobile devices are being attached to the computer network. Among them are digital smartphones, high definition IPTVs, music and video game players, tablets such as iPads, electronic appliances, and control and monitoring systems (e.g., security cameras, CCTVs, traffic signals). The rapid growth of various digital devices is transforming the network into a more dynamic, diversified, and, at the same time, more vulnerable platform.

  Besides the digital computer network, there are also other traditional network platforms that were created long before the digital revolution and are still in use. They include radio/TV broadcasting networks and public switched telephone networks. The traditional networks are, however, not the focus of this book.

  Although traditional networks and digital computer networks started off on separate platforms, their convergence has been taking place. For instance, more voice calls are digitized and transported over the Internet. Think of the popularity of Internet call services and voice/video conference platforms including Zoom, Google Meet, and a slew of mobile apps. The convergence has been accelerating as the computer network has reached its stability in handling real-time traffic.

  Sign up to read

  Learn more about book