designing a wireless network phần 6 potx
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 ... six leased satellite
Designing a Wireless Enterprise Network: Hospital Case Study • Chapter 6 211
152_wan_ 06 6/21/01 3:24 PM Page 211
1 76 Chapter 5 • Designing a Wireles...
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: ... Page 2 96
300 Chapter 8 • 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. Noi...
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 ... 263
Solutions Fast Track 264
Frequently Asked Questions 266
Chapter 8 Designing a Wireless Campus
Network: University Case Study 269
Introduction 270
A...
designing a wireless network phần 2 pptx
... elements.
www.syngress.com
Figure 2. 16 Yagi Phased Array Antenna and Associated Directional
Beam Pattern
Cross Section View of
Yagi Beam Pattern
Side View
Yagi Phased Array
Antenna
Director
Elements
Driven
Element
Reflector
Element
Cable
Direction ... 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 anten...
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 A...
designing a wireless network phần 4 pptx
... 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 ... example and you are asked to figure out
the broadcast address for the network. We know that the network por-
tion is 192. 168 .0.x and, as far as we know, the available hosts are
192. 168 .0.0...
designing a wireless network phần 5 pot
... 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 on the ... Communications (GSM) is an
international standard for voice and data transmission over a
wireless phone .A user can place an identification card called a
Subscriber Identity Modul...
designing a wireless network phần 7 ppt
... Office
Office
Office
Break
Room
AP
AP
152_wan_ 06 6/21/01 3:24 PM Page 219
Designing a Wireless Enterprise Network: Hospital Case Study • Chapter 6 225
Place the directional antenna so that the antenna energy ... functional
boundary of the warehouse naturally makes it a separate subdomain.The
www.syngress.com
152_wan_07 6/ 21/01 3:25 PM Page 239
234 Chapter 7 • Designing a W...
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 Mana...
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 ... checksum (CRC), 76
D
daisy-chained signals, 284
data and voice networks, 3 26 334
data flow diagram (DFD), 169
data-link layer, 75–77, 111
default address masks, 94
Delivery Services, and wirele...