Computer Networking First-Step

ISBN-10: 1587201011

ISBN-13: 9781587201011

Edition: 2004

Authors: Wendell Odom

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Your first step into the world of computer networking No experience required Includes clear and easily understood explanations Makes learning easy Your first step to computer networking begins here! Learn basic networking terminology Understand how information is routed from place to place Explore Internet connectivity secrets Protect your computer from intrusion Build local-area networks (LANs) Welcome to the world of networking! Networking and the Internet touch our lives in untold ways every day. From connecting our computers together at home and surfing the net at high speeds to editing and sharing digital music and video, computer networking has become both ubiquitous and indispensable. nbsp; No experience needed! Computer Networking First-Stepexplains the basics of computer networking in easy-to-grasp language that all of us can understand. This book takes you on a guided tour of the core technologies that make up network and Internet traffic. Whether you are looking to take your first step into a career in networking or are interested in just gaining a conversational knowledge of the technology, this book is for you! nbsp;
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Book details

List price: $34.99
Copyright year: 2004
Publisher: Cisco Press
Publication date: 4/21/2004
Binding: Paperback
Pages: 552
Size: 7.25" wide x 9.00" long x 1.25" tall
Weight: 2.310
Language: English

Networking Basics
What Is a Network?
No, Really, What Is a Network?
What an Elephant--err, a Network--Looks Like
Three Blind Men--The Server Guy, the Cabling Guy, and the Network Guy
Different Types of Traditional Computer Networks
Big Company, Multiple Sites: An Enterprise WAN
Just You and Me and the Whole World--The Internet
A Network's Reason for Existence
Using the Network by Accident
Using the Network on Purpose
Web Browsing
Electronic Mail (E-Mail)
Downloading and Transferring Files
Building a Network: It All Starts with a Plan
Conforming to the Rules
Rules, Schmools for Networking
Examples of Good Rules for Networking
Traveling a Roadway for a Bit to Get a Byte
Example Rule for Sending the Bits
Sending the Bits a Packet (Package) at a Time
What to Do When the Bits Get Bashed
The Book(s) of Rules
Proprietary Network Models Prevent Pervasive Population of Networking Devices
Public Network Models Provide Pervasively Popular Networks
How TCP/IP Standards Grow
Some Pretty Popular TCP/IP Protocols
Transmission Control Protocol (TCP)
Internet Protocol (IP)
TCP/IP Standards That Aren't TCP/IP Standards
Standards for Physical Networking Nearby
Standards for Physical Networking Far Away
How to Eat an Elephant, TCP/IP Style
How to Eat a T-Rex, OSI Style
T-Rex Versus the Elephant
Running the Local Department of (Network) Transportation
How to Build a Local (Network) Roadway
Driving Bits Across the Network Roadway
What's a Local-Area Network?
Transmitting Bits Across the Local Network Roadway
Driving Bits Across a Wire
The Need for a Two-Lane (Network) Road
The Equivalent of Asphalt: Cables
Painting the Lines on the Road: Connectors
Driving in the Right Lane (Pair) on the Road
Sharing the Local Roadway: Ethernet Hubs
Dirt Roads Versus the DOT
Rules of the Road: How to Use the Local (Network) Roadway
Preparing for a Trip: How to Make Your Car (Data) "Street Legal"
LAN-Legal Data: An Ethernet Frame
Driving Where I Want and When I Want Is Pretty Cool
Why Wrecks (Collisions) Happen on Ethernet
How to Avoid Most Wrecks
What to Do When a Wreck Happens
Stopping at the Destination: What Happens When Someone Comes to See You
Are They Coming to Our House or the Neighbor's House?
Who Is It, Honey?
I Don't Understand a Thing You're Saying
Two Standards for Ethernet
Reducing Congestion and Driving Faster on the Local (Network) Roadway
Reducing Congestion by Opening Up More Lanes on Each LAN
Hubs: A One-Lane Road
Switches: How to Create Dozens of Lanes on the LAN
The Perfect Roadway: No Wrecks Allowed!
Using Full Duplex: Making the Streets Two Way
Switches: The Rest of the Story
Painting the Road Signs: Learning MAC Addresses
The Forward Versus Filter Decision
What to Do When the Road Sign (Address Table) Doesn't List Your Destination
How to Go Everywhere at the Same Time
Summary of Switch Logic
I Feel the Need, the Need for Speed
A New, Improved, and Faster Ethernet--Let's Call It Fast Ethernet
If Fast Ethernet Is Good, Even Faster Is Better: Gigabit Ethernet
Ultra Super-Fast Fast Ethernet: 10 Gigabit Ethernet
Summary of Ethernet Speeds
A Switch for All Speeds
Adding Local (Network) Roadways for No Extra Money
The Physical Reality Precedes the Virtual Reality
Physical LANs: It's All About Broadcasts
Master of Your Own (Broadcast) Domain
Multiple Physical LANs Require Multiple Switches
Virtual (LAN) Reality: One Switch, but Multiple LANs
How to Create a Virtual LAN
Why You Need More Than One LAN
If 100 Devices in a LAN Is Good, 1000 Devices Must Be Better
OSI Layer 8 Issues
OSI Layer 3 Design Goals
Saving Cash
Packing Your VLAN's Frames in a Trunk When Leaving the Switch
How to Pack Your Trunk for the Trip to the Other Switch
Tale of Two Trunking Protocols
Shipping and Logistics: Commerce Using the (Network) Roadways
Shipping Goods over a (Network) Roadway
Neither Rain, Nor Sleet, Nor Dark of Night: E-Mail
Dropping Off and Getting Your (e)Mail
Postal Address Versus E-Mail Address
Rules, Schmools: Even More Rules?
Protocols for Addressing the Envelope Correctly: Internet Message Formats
The KISS Principle and SMTP
What to Do When You Need a Little POP in Your Network
SMTP and POP3 Working Together
Building a Centralized Warehouse: File Transfer
Warehouse Lingo and Procedures
Rules, Schmools for FTP
Browsing Around the Internet Shopping Mall: The World Wide Web
Rules, Schmools for Web Retailing
Buy One, Get a Bunch for Free
Choosing Shipping Options When Transporting the Goods over the (Network) Roadway
"Hello, I'm at Your Service"
Full-Service Shipping
Shipping Basics: Controlling Shipments Using Shipping Labels
Purchasing Insurance for Your (Network) Shipment
The Mechanics of Delivery Confirmation
Lose All You Want--We'll Make More
Big Box, Small Truck--What Do You Do?
Why Three Smaller Segments Is Better Than One Big Segment
My Little White Lie About Acknowledgments
Delivering the Package to the Right Person, Not Just the Right Address
The Chicken, the Egg, and the Destination Port of the First Segment
Starting Off on the Right Foot Using a TCP Connection
Navigating the Roadways to Find the Right Street Address
Delivering the Goods to the Right Street (IP) Address
Navigation Basics: Driving to the Right Destination
IP as the Postmaster General of the Network
Knowing the Address Before Driving to the Destination
Putting a Name on the Shipping Label
How to Run a (Network) Postal Service
One Location, One Zip Code, One Network Number
Three Sizes Fit All
The Actual Class A, B, and C Network Numbers
Subdividing a Network into Subnets
The Problem: Wasting IP Host Addresses
The Solution: Subnetting Saves IP Host Addresses
Knowing Where to Turn at Each Intersection (Router)
A Short Trip from Your House (PC) to the Local Store (Server)
Overview of the End-to-End Routing Process
Leaving Your Neighborhood the Same Way, Every Time
Getting into Your Car to Drive to Lunch
Learning How to Go to the Default Post Office (Router)
Summary of Step 1
Choosing Which Road to Take at the First Intersection
The Useful but Short Life of an Ethernet Frame
Deciding Where to Go Next
Yet Another Ethernet Data Link Frame
Summary of Step 2
Choosing Which Road to Take at the Final Intersection
The Still Useful, but Still Short Life of an Ethernet Frame
The Routing Table at R2: Same Destination, Different Forwarding Instructions
Yet Another Short-Lived Ethernet Frame
Other Rules of the Road
Routing with Subnets
How to Drive When You Aren't Leaving the Neighborhood (Subnet)
Painting the Road Signs on Your Interstate (Internetwork)
Routing to Nearby Places
Painting Road Signs and Other Long-Lasting Directions
Dynamically Learning and Changing Routing Tables
Picking the Best Road (Route)
Introducing the Long List of Routing Protocols
People Like Names, but Computers Like Numbers
Looking Up the Name and Number in the Phone Book (Host Table)
Asking Someone Else to Look Up the Phone Number (IP Address) for You
Asking for Name Resolution Help Inside the Company
Asking for Name Resolution Help Outside the Company
How Names Should Be Formatted
Building an Interstate (Inter-LAN) Highway System
Leasing a (Network) Roadway Between Two Points
Leasing the Cable When You Can't Run the Cable
You Can't Lease the Cross-Over Cable, So Lease Something Almost Just Like It
It's Not Really a 450-Mile Cable, but It Works Like One
The Many Personalities of a WAN Link
Differences Between a Cross-Over Cable and a Leased Circuit
I Feel the Need, the Need for Speed
The Need to Control the Speed
Double Your Speed at No Cost
A WAN Link Installation Plan
Roters and WANs: A Match Made in Heaven
You Can't Just Send Data; You Have to Send a Frame
Addressing on WAN Serial Links
The Choice of Two Data Link Protocols
Leasing a (Network) Roadway Between Lots of Places
Making the Telco Look Like One Big Whopping Switch
Cabling a Router to the Big Frame Relay Switch
Basic Logic Used by the Big Whopping Frame Relay Switch
If Two Sites Are Good, Three (or More) Must Be Better
It's Virtually Like a Leased Circuit, So Let's Call It a Virtual Circuit
Faster, Cheaper, Better--You Can't Go Wrong with Frame Relay
You Can Still Use Serial Links, but It Will Cost You Up Front
Get Your Free Bandwidth Here! Free Bits!
Routers and WANs: Still a Match Made in Heaven
You Can't Just Send Data--You Have to Send a Frame Relay Frame
Addressing Is Much More Interesting on Frame Relay Than on Serial Links
Driving from Home onto the Globally Interconnected (Internet) Roadway
Once on the Interstate (Internet), You Can Go Anywhere
Using a Phone Line for Data
Making Data Sound Like Voice
What Phones Do for Voice, Modems Do for Data
How Fast Can You Talk?
Calling the Internet! Calling the Internet!
Now That I Know How to Talk, Whom Should I Call?
Now That I Know Whom to Call, What Do I Say?
Using the Phone Line for Data--the DSL Way
Dr. Analog Voice and Mr. Hiding Digital
Faster Is Better
Sending Data from Home Without Using a Phone Line
Securing the Network
Accepting the Right People and Rejecting the Wrong People
Safe Driving by Using AAA
Checking for Fake Drivers' (Users') Licenses
Hey! How Did You Get in Here?
Checking the License to Find Out if He Can Drive That Kind of Vehicle
Tracking Drivers' (Users') Violations
Making Sure (Internet) Drivers Have Valid Drivers' Licenses
No Appls Yet? Be a Good CHAP and Ask PAP
Stopping Someone from Using Your License (Password)
You're Wearing Your Credit Card Number on Your T-Shirt
Keeping a Watchful Eye Over Who Drives into Your (Network) Neighborhood
Setting the Ground Rules
Enforcing the Ground Rules
Ways to Watch Your (Network) Neighborhood
Deciding When to Stop the Traffic
Safe Places Outside of Your Neighborhood (Network)
Using the Police to Watch for Bad Guys
Watching for Wolves in Sheep's Clothing
Avoiding Catching Cold
Profiling What the Bad Guys Want to Do
Answers to Chapter Review Questions
Converting IP Addresses Between Decimal and Binary
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