802.11 Wireless Networks: The Definitive Guide Creating and Administering Wireless Networks

By Matthew Gast

Cover | Table of Contents | Colophon

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Colophon

Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects. The animal on the cover of 802.11 Wireless Networks: The Definitive Guide is a horseshoe bat (Rhinolophus hipposideros). This rare and globally endangered species is the smallest of the European horseshoe bats; they typically weigh only 4-10 grams and have a wingspan of 19-25 centimeters. Horseshoe bats get their name from the horseshoe-shaped, leaflike plate of skin around the nose. This nose-leaf helps modify and direct the ultrasonic sounds they emit through their nostrils (a method of sensory perception known as echolocation) to orient themselves to their surroundings, detect obstacles, communicate with each other, and find food. Bats' echolocation systems are so accurate that they can detect insects the size of gnats and objects as fine as a human hair.

Lesser horseshoe bats are found in a variety of habitats, ranging from the British Isles to the Arabian Peninsula and Central Asia, and from Morocco to Sudan. The lesser horseshoe bat was originally a cave-roosting bat, but many summer maternity colonies now occupy the roofs of old rural houses and farm buildings. These bats also sometimes roost in hedgerows and hollow trees. Maternity colonies of 30 to 70 are normal, but roosting mothers have been known to form colonies of as many as 200 bats. Lesser horseshoe bats hibernate, sometimes in large groups, from October until late April or early May. Their winter roosts are usually underground, in caves or tunnels. They hang by their feet with their wings wrapped around their bodies, often in open and exposed positions but rarely in large clusters. Matt Hutchinson was the production editor and proofreader, and Leanne Soylemez was the copyeditor for 802.11 Wireless Networks: The Definitive Guide. Sarah Sherman and Darren Kelly provided quality control. Lucie Haskins wrote the index.

Ellie Volckhausen designed the cover of this book, based on a series design by Edie Freedman. The cover image is a 19th-century engraving from the Dover Pictorial Archive. Emma Colby produced the cover layout with QuarkXPress 4.1 using Adobe's ITC Garamond font.

Melanie Wang designed the interior layout, based on a series design by David Futato. Neil Walls converted the files from Microsoft Word to FrameMaker 5.5.6 using tools created by Mike Sierra. The text font is Linotype Birka; the heading font is Adobe Myriad Condensed; and the code font is LucasFont's TheSans Mono Condensed. The illustrations that appear in the book were produced by Robert Romano and Jessamyn Read using Macromedia FreeHand 9 and Adobe Photoshop 6. The tip and warning icons were drawn by Christopher Bing. This colophon was written by Rachel Wheeler.

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