Chapter 3: TCPIP Fundamentals

Overview

THE FOLLOWING NETWORK+ EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:

• 2.3 Differentiate between the following network protocols in terms of routing, addressing schemes, interoperability, and naming conventions:

  • TCP/IP

  • IPX/SPX

  • NetBEUI

  • AppleTalk

• 2.5 Define the purpose, function, and/or use of the following protocols within TCP/IP:

  • IP

  • TCP

  • UDP

  • FTP

  • TFTP

  • SMTP

  • HTTP

  • HTTPS

  • POP3/IMAP4

  • TELNET

  • ICMP

  • ARP

  • NTP

• 2.6 Define the function of TCP/UDP ports. Identify well-known ports.

• 2.7 Identify the purpose of the following network services (e.g., DHCP/bootp, DNS, NAT/ICS, WINS, and SNMP).

• 2.8 Identify IP addresses (IPv4, IPv6) and their default subnet masks.

• 2.9 Identify the purpose of subnetting and default gateways.

• 2.10 Identify the differences between public vs. private networks.

• 3.3 Identify the main characteristics of VLANs.

• 4.8 Given a scenario, predict the impact of modifying, adding, or removing network services (e.g., DHCP, DNS, WINS, etc.) on network resources and users.

One of the most important elements of Internet technology— and the element that makes intranets so easy to set up and use—is the networking protocol that provides the foundation to the Internet. This protocol is known as TCP/IP and is actually a whole family of protocols, with its name coming from only two of them: the Transmission Control Protocol and the Internet Protocol . Before you can connect to the Internet or do anything with your intranet, you must first set up TCP/IP on the server and on all workstations.

This chapter starts by describing the TCP/IP family of protocols, continues with a description of IP addressing and address classifications, and goes on to describe several of the name-resolution services available. It concludes with a detailed discussion of how to set up and configure TCP/IP on Windows NT Workstation and Windows 98 and a brief discussion of VLAN technologies.