tailieunhanh - how to cheat at securing a wireless network phần 7

Tham khảo tài liệu 'how to cheat at securing a wireless network phần 7', công nghệ thông tin, an ninh - bảo mật phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 258 Chapter 7 Wireless Network Architecture and Design Frequently Asked Questions The following Frequently Asked Questions answered by the authors of this book are designed to both measure your understanding of the concepts presented in this chapter and to assist you with real-life implementation of these concepts. To have your questions about this chapter answered by the author browse to solutions and click on the Ask the Author form. Q What does the G stand for in 1G 2G and 3G mobile wireless technologies A It stands for generation and the use of it implies the evolutionary process that mobile wireless is going through. Q What are the primary reasons that service providers use a Wireless Local Loop WLL A The primary reasons are speed of deployment deployment where wireline technologies are not practical and finally for the avoidance of the local exchange carrier s network and assets. Q Why is digital transmission better than analog in mobile wireless technologies A Digital transmissions can be reconstructed and amplified easily thus making it a cleaner or clearer signal. Analog signals cannot be reconstructed to their original state. Q Why does fog and rain affect optical links so much A The tiny water particles act as tiny prisms that fracture the light beam and minimize the power of the signal. Q What is the difference between an ad-hoc network and an infrastructure network A Ad-hoc networks are ones where a group of network nodes are brought together dynamically by an Access Point AP for the purpose of communicating with each other. An infrastructure network serves the same purpose but also provides connectivity to infrastructure such as printers and Internet access. Wireless Network Architecture and Design Chapter 7 259 Q Several customers want me to give them up-front costs for designing and installing a network. When is the most appropriate time to commit to a set price for the job A Try to negotiate service charges .