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Computer Networks Foundation - Study Notes

May 11, 2015

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Technology

Describing basic networking concepts, topologies, the OSI model, and the media used to physically connect a network, for those interested in learning the fundamentals of computer networks.

Complete study notes.

  • 1.Computer Networks Foundation Study Notes +W Series - Technology Skills For Women1 http://SlideShare.net/OxfordCambridge 1 Men are allowed to read too, if they wish, as the language style and the document format are universal.

2. Study Notes http://SlideShare.net/OxfordCambridge 2 | P a g e C o m p u t e r N e t w o r k s F o u n d a t i o n Table of Contents About +W Series - Technology Skills For Women..............................................................................................................................................5 References.................................................................................................................................................................................................................................6 Course Objectives..................................................................................................................................................................................................................7 I. NETWORKING BASICS:...........................................................................................................................................................8 A. NETWORKING OVERVIEW..............................................................................................................................................................................9 1. Core network components...........................................................................................................................................................................................9 Quiz............................................................................................................................................................................................................................................ 11 2. Network architectures................................................................................................................................................................................................ 11 Quiz............................................................................................................................................................................................................................................ 13 Quiz............................................................................................................................................................................................................................................ 13 Summary................................................................................................................................................................................................................................. 13 B. TYPES OF NETWORKS..................................................................................................................................................................................14 1. Local area networks (LANs)..................................................................................................................................................................................... 14 Quiz............................................................................................................................................................................................................................................ 15 2. Wide area networks (WANs)................................................................................................................................................................................... 15 Quiz............................................................................................................................................................................................................................................ 16 Quiz............................................................................................................................................................................................................................................ 17 3. Metropolitan area networks (MANs)................................................................................................................................................................... 17 Quiz............................................................................................................................................................................................................................................ 17 4. Intranets and extranets .............................................................................................................................................................................................. 18 Quiz............................................................................................................................................................................................................................................ 18 Quiz............................................................................................................................................................................................................................................ 19 Summary................................................................................................................................................................................................................................. 19 C. THE OSI MODEL ..........................................................................................................................................................................................20 1. The OSI reference model............................................................................................................................................................................................ 20 Quiz............................................................................................................................................................................................................................................ 22 2. Layers of the OSI model.............................................................................................................................................................................................. 23 Quiz............................................................................................................................................................................................................................................ 26 3. Encapsulation and de-encapsulation................................................................................................................................................................... 26 Quiz............................................................................................................................................................................................................................................ 30 4. The TCP/IP stack........................................................................................................................................................................................................... 34 Quiz............................................................................................................................................................................................................................................ 37 Quiz............................................................................................................................................................................................................................................ 38 Summary................................................................................................................................................................................................................................. 39 D. UNDERSTANDING BASIC NETWORKING CONCEPTS.................................................................................................................................40 Exercise overview.............................................................................................................................................................................................................. 40 Task 1: Identifying networks........................................................................................................................................................................................ 40 Step 1 of 3............................................................................................................................................................................................................................... 41 Result........................................................................................................................................................................................................................................ 41 Step 2 of 3............................................................................................................................................................................................................................... 41 Result........................................................................................................................................................................................................................................ 41 Step 3 of 3............................................................................................................................................................................................................................... 42 Result...............................................................................