For CCNAs and CCNPs wanting to move to a design role, this guide provides the most concise and least expensive coverage of the CCDA exam. It includes complete coverage of all official Cisco exam objectives.
Using an original and unprecedented multi-level analysis of access and use in low-income neighbourhoods, 'Digital Cities' tells the story of information technology use and inequality in American cities and metropolitan areas.
Using an original and unprecedented multi-level analysis of access and use in low-income neighbourhoods, 'Digital Cities' tells the story of information technology use and inequality in American cities and metropolitan areas.
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计算机网络
和美国西蒙与舒斯特国际出版公司合作出版
of widely separated networks , two “ half bridges ” are needed ( see Figures 14-6 and 14-7 , below ) . ... ( a ) Architecture tl , t8 User data t2 , t7 LLC - H User data t3 , t4 , 15 , to MAC - H LLC - H User data MAC - T ( b ) ...
The objective of this book is to provide an up-to-date survey of developments in computer security.
Internet and WWW 2: Internet Network Design, Implementation and Management
Companion CD-ROM The companion CD-ROM contains a test bank with over 200 practice questions and an electronic version of the text. This volume is part of the Exam Certification Guide Series from Cisco Press(r).
With link encryption, each vulnerable communications link is equipped on both ends with an encryption device.Thus,all traffic over all communications links is secured.Although this requires a lot of encryption devices in a large network ...