Chapter 19. Networking Fundamentals (Topic 1.112)


While it is not necessary for you to be a networking expert to pass the LPIC Level 1 Exams, you must be familiar with networking, network-related vocabulary, and basic Linux networking configuration. This chapter introduces fundamental networking, troubleshooting, and dial-up concepts specifically included in the exams. However, it is not a complete introductory treatment, and you are encouraged to review additional material for more depth. This chapter covers these three Objectives:


Objective 1: Fundamentals of TCP/IP

Candidates should demonstrate a proper understanding of network fundamentals. This Objective includes the understanding of IP addresses, network masks, and what they mean (i.e., determine a network and broadcast address for a host based on its subnet mask in dotted quad or abbreviated notation or determine the network address, broadcast address, and netmask when given an IP address and number of bits). It also covers the understanding of the network classes and classless subnets (CIDR) and the reserved addresses for private network use. It includes the understanding of the function and application of a default route. It also includes the understanding of basic Internet protocols (IP, ICMP, TCP, UDP) and the more common TCP and UDP ports (20, 21, 23, 25, 53, 80, 110, 119, 139, 143, 161). Weight: 4.


Objective 3: TCP/IP Configuration and Troubleshooting

Candidates should be able to view, change, and verify configuration settings and operational status for various network interfaces. This Objective includes manual and automatic configuration of interfaces and routing tables. This especially means to add, start, stop, restart, delete, or reconfigure network interfaces. It also means to change, view, or configure the routing table and to correct an improperly set default route manually. Candidates should be able to configure Linux as a DHCP client and a TCP/IP host and to debug problems associated with the network configuration. Weight: 7.


Objective 4: Configure Linux as a PPP Client

Candidates should understand the basics of the PPP protocol and be able to configure and use PPP for outbound connections. This Objective includes the definition of the chat sequence to connect (given a login example) and the setup commands to be run automatically when a PPP connection is made. It also includes initialization and termination of a PPP connection, with a modem, ISDN, or ADSL, and setting PPP to automatically reconnect if disconnected. Weight: 3.

What follows is not a complete treatment of TCP/IP , but rather a refresher of its core concepts as they apply to Exam 102. If you're interested in more in-depth coverage of TCP/IP, check out TCP/IP Network Administration, Craig Hunt (O'Reilly).



LPI Linux Certification in a Nutshell
LPI Linux Certification in a Nutshell (In a Nutshell (OReilly))
ISBN: 0596005288
EAN: 2147483647
Year: 2004
Pages: 257

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