Book Image

Networking Fundamentals

By : Gordon Davies
Book Image

Networking Fundamentals

By: Gordon Davies

Overview of this book

A network is a collection of computers, servers, mobile devices, or other computing devices connected for sharing data. This book will help you become well versed in basic networking concepts and prepare to pass Microsoft's MTA Networking Fundamentals Exam 98-366. Following Microsoft's official syllabus, the book starts by covering network infrastructures to help you differentiate intranets, internets, and extranets, and learn about network topologies. You’ll then get up to date with common network hardware devices such as routers and switches and the media types used to connect them together. As you advance, the book will take you through different protocols and services and the requirements to follow a standardized approach to networking. You’ll get to grips with the OSI and TCP/IP models as well as IPv4 and IPv6. The book also shows you how to recall IP addresses through name resolution. Finally, you’ll be able to practice everything you’ve learned and take the exam confidently with the help of mock tests. By the end of this networking book, you’ll have developed a strong foundation in the essential networking concepts needed to pass Exam 98-366.
Table of Contents (23 chapters)
Free Chapter
Section 1: Network Infrastructure
Section 2: Network Hardware
Section 3: Protocols and Services
Section 4: Mock Exams
Mock Exam 1
Mock Exam 2


I'd like to start this section by recapping what we already know about DHCP. You should recall that DHCP is used to issue an IP address automatically to any host that requests it. To do this, the process of DORA is followed:

  • Discover: The client sends a broadcast packet to discover the DHCP server.
  • Offer: The DHCP server offers an IP address and other information to the host.
  • Request: The client, on receipt of the offer, requests the IP address and other details provided by the server.
  • Acknowledge: The server sends an acknowledgement that the IP address has been issued to that client.

Figure 14.1 shows a Wireshark capture of the DHCP process. Note that on the first line, the source IP address is, as the requesting device does not have an IP address as of yet; and the destination address is the general broadcast address of On the second line...