using a wireless network without permission
Designing A Wireless Network
... on Wireless 18 Apply Wireless Technologies to Horizontal Applications Along with the many vertical markets and applications, you can apply wireless technologies to horizontal applications, meaning ... site and get accurate information regarding the status of a package. Using Wireless for Public Safety Public safety applications got their start with radio communications for maritime endeavors and other ... Service as a Network Systems Engineer bringing his knowledge of the desktop platform and a general understanding of a broad range of technologies in areas such as remote access, ATM, frame relay, and...
Ngày tải lên: 16/10/2013, 13:15
designing a wireless network phần 1 pot
... technology. Around the same time that Faraday worked with electromagnetism, an American professor named Joseph Henry became the first person to transmit a practical electrical signal. As a watchmaker, he constructed batteries ... 21 Chapter 2 Radio Elements and Frequency Spectrums 23 Introduction 24 Transmitting Radio Signals Over EM Waves 24 Anatomy of a Waveform 25 Modulating a Radio Signal 27 Propagating a Strong Radio ... phones, pagers, and wireless Personal Digital Assistants (PDAs) have become so commonplace in our lives that it is easy to forget that ten years ago, they were a rarity. But wireless commu- nications...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 2 pptx
... the signal cannot penetrate metal. Assume you have a metal sphere. As an EM wave hits the leading edge of the sphere, it acts like an antenna, and the wave induces a voltage in the metal.This voltage ... data. An example of this is when an animal is tagged with a transmitter and the signal is collected and data is gathered over a period of time to be interpreted at a later date. Monitoring applications ... and how and why radio signals are modulated onto carrier waves; we’ll look at antenna design, the relationship between wave propagation technolo- gies and signal power, and what elements make up a wireless...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 3 ppt
... antennas. Planar Array Antennas Planar array antennas are similar in concept to Yagi antennas except all elements, both active and parasitic, lie in the same plane.This results in a flat antenna that can be mounted ... mounted flat on a wall, yet still have the proper- ties and gain of a directional antenna. Figure 2.17 shows a planar array antenna. www.syngress.com Figure 2.17 Planar Array Antenna and Associated ... Directional Beam Pattern Side View Planar Phased Array Antenna Direction of Beam Antenna G Directional Beam Multiple Antenna Elements Shown with Dipole Antennas Top View Steerable Beam Planar Array...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 4 pptx
... for maintaining IP addresses, you can get the details necessary to obtain a range. In North America, South America, the Caribbean, and sub-Saharan Africa, the organization responsible is the Address ... at www.ripe.net. Lastly, for the Asia/Pacific region, the organization is the Asia/Pacific Network Information Centre (APNIC), which can be found at www.apnic.net. Q: When using PAT, how can I accommodate all ... routed to a different link. A dynamically routed network is capable of facilitating these types of changes. How is an algorithm aware that the network has changed? Remember that an algorithm...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 5 pot
... also can authenticate a wireless device against a list of MAC addresses.This list could reside locally on the AP, or the authentication could be checked against a database of allowed MACs located ... received and will transmit it again. All this takes place at the MAC layer. Noticing that an ACK has not been received, the sending unit is able to grab the radio medium before any other unit can and ... signals do not radiate as far, and as we mentioned, the frequencies are reused as much as we desire as long as the cells are spaced apart appropriately. Mobile technology has developed with various...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 6 potx
... their greatest weaknesses.The same can be said when examining the attributes of a wireless network. Both mobility and ease of access are touted as some of the greatest characteristics available when using ... with an issue before escalating it? ■ How will an escalation take place? ■ Which procedures will be automated? ■ What tools are available to which organization? ■ What security changes are required? Depending ... channel spacing and active channel separation play an important role when planning and deploying a wireless network. These aspects refer to the amount of space between contiguous or active channels...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 7 ppt
... electricity availability, and physical access.The access points must connect to the existing network using a RJ-45 wire.An electrical outlet must be available for the access point. Physical access can ... greater bandwidth, verify that the packets are getting forwarded via the wireless link over the leased T-1 lines. When all six wireless links are installed and are passing traffic, install and ... departments on the first floor of Pro Sports.The first floor contains various clothing departments, a shoe department, a baseball/soccer department, a golf department, a sea- sonal department, and a...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 8 ppsx
... academic areas of the campus. At this time, only three academic areas are addressed.The planned network must be easy to adapt as these areas of study increase or change. For example, the Math and ... Athletic department may have functional groups of coaches, players, and the press.The Administrative department may designate a Financial functional group, as well as Student Records and Management ... as encryption and password allocation to ensure the concept of fair play and remain within NCAA rules and guidelines. Both teams must have equal capabil- ities to meet NCAA rules.Visiting coaching...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 9 potx
... of raw data passed through a link or network and includes both overhead signaling data as well as user data.Throughput refers to the actual amount of user data passed through the link or network. Q: ... signal with up to 8 high-quality 2.4 GHz voice channels and all the Custom Local Area Signaling Service (CLASS) calling features like call waiting and caller ID.The HomeRF standard also uses a ... Page 296 300 Chapter 8 ã Designing a Wireless Campus Network: University Case Study A: Signal power and antenna type are the two primary factors in the range of the signal. Noise levels can also...
Ngày tải lên: 14/08/2014, 14:20
designing a wireless network phần 10 pps
... 71 antenna point bridge placements, 218 quarter-wavelength momopole antennas, 51 phased array antennas, 51 planar array antennas, 53–54 receiver antennas, 48 transmitter antennas, 48 AP Manager ... (PCS), 12 Personal Digital Assistant (PDA), 13, 143, 235, 305 Phase Shift Keying (PSK), 31, 33 phased array antennas, 51 physical interface issues, campus case study, 282 physical landscape, wireless networks, 197–199 physical ... (CRC), 76 D daisy-chained signals, 284 data and voice networks, 326–334 data flow diagram (DFD), 169 data-link layer, 75–77, 111 default address masks, 94 Delivery Services, and wireless technology, 14 Department...
Ngày tải lên: 14/08/2014, 14:20