R E B O OT C O M PU T E R S E RVI C ES I N C . · C O L L E G E ST U DY S E R I ES
Computer Networking
101
The Complete Study Guide to Networking Fundamentals
Models · Addressing · Subnetting · Practice + Solutions
Inside this guide
1 · What Is a Network?
2 · The OSI & TCP/IP Models
3 · Network Hardware & Topologies
4 · IP Addressing & Subnetting
5 · Core Protocols & Ports
6 · The DNS & DHCP Workflow
7 · Network Security Basics
8 · Quick Reference & Formula Sheet
9 · Practice Problems with Solutions
10 · Glossary
A self-study companion for networking fundamentals · rebootcs.com
, 1 · What Is a Network?
A computer network is two or more devices connected to share data and resources. Networks are classified mainly by
geographic scale.
Type Scope Example
PAN Personal (a few meters) Bluetooth earbuds to phone
LAN Local (building/campus) Office or home network
MAN Metropolitan (city) City-wide fiber network
WAN Wide (country/global) The Internet
Data moves in small units called packets. Networks can be wired (Ethernet) or wireless (Wi-Fi), and follow either a
client–server model (central servers provide services) or peer-to-peer (devices share directly).
© Reboot Computer Services Inc. · Created by Mario Washington · Page 2 of 12
Computer Networking
101
The Complete Study Guide to Networking Fundamentals
Models · Addressing · Subnetting · Practice + Solutions
Inside this guide
1 · What Is a Network?
2 · The OSI & TCP/IP Models
3 · Network Hardware & Topologies
4 · IP Addressing & Subnetting
5 · Core Protocols & Ports
6 · The DNS & DHCP Workflow
7 · Network Security Basics
8 · Quick Reference & Formula Sheet
9 · Practice Problems with Solutions
10 · Glossary
A self-study companion for networking fundamentals · rebootcs.com
, 1 · What Is a Network?
A computer network is two or more devices connected to share data and resources. Networks are classified mainly by
geographic scale.
Type Scope Example
PAN Personal (a few meters) Bluetooth earbuds to phone
LAN Local (building/campus) Office or home network
MAN Metropolitan (city) City-wide fiber network
WAN Wide (country/global) The Internet
Data moves in small units called packets. Networks can be wired (Ethernet) or wireless (Wi-Fi), and follow either a
client–server model (central servers provide services) or peer-to-peer (devices share directly).
© Reboot Computer Services Inc. · Created by Mario Washington · Page 2 of 12
