Computer Networking 101 Study Guide PDF – Networking Basics, OSI Model & Subnetting Notes with Practice Answers | IT Printable

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Computer Networking 101 Study Guide PDF – Networking Basics, OSI Model & Subnetting Notes with Practice Answers | IT Printable

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12 pages

2026/2027

Institution Networking

Course Networking

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: A 12-page networking fundamentals study guide covering network types, the OSI & TCP/IP models, network hardware & topologies, IP addressing & subnetting, core protocols & ports, DNS/DHCP, and network security basics. Includes worked subnetting examples, a CIDR quick-reference table, and practice problems with solutions. A strong starter for IT courses and CompTIA Network+ prep. Instant digital download. Original content by Reboot Computer Services Inc.

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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

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Uploaded on: August 3, 2026
Number of pages: 12
Written in: 2026/2027
Type: Other
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