... Microsoft Certified Trainer (MCT), CWNP
Certified WirelessNetworkAdministrator (CWNA) , Certified Wireless Security Profes-
sional (CWSP), and Certified WirelessNetwork Trainer (CWNT), to name a few. He ... communications.
Extending Existing Networks with Wireless LAN
Early wireless networking technology was typically deployed to allow an extension of an
existing wired network infrastructure. For example, some users ... help one learn vendor-neutral
wireless LAN technology. Listed are some of these resources:
Self -study materials
Official study guides from Sybex
Online practice exams from
www.cwnp.com
Instructor-led...
... twisted pair (UTP)
virtual local area networks (VLANs)
wireless bridges
wireless controllers/switches
wireless LAN routers
wireless mesh networking
wireless repeaters
wireless VPN router
38893c02.indd ... communications in the event of a device
or path failure.
Wireless mesh networking is very popular in the outdoor market. Some examples where
wireless mesh networks are currently utilized are:
Metropolitan
University ... 3 antennas
Mesh Access Points
Wireless mesh networking is growing at a steady pace. The term mesh networking has been
in existence for many years. In a full mesh network, all nodes connect together...
... WPA2-personal. Enter the preshared key of the wireless network.
The key must be 8 to 63 characters and must match the network key.
7. Connect to the wirelessnetwork using the created profile. The wizard ... case.
7. C. A wireless client bridge will connect an Ethernet segment to a wireless network, allow-
ing all devices connected to a common physical layer boundary to communicate wirelessly.
8. ... computers—either desk-
top or notebook—connected to a network.
However, there are many other devices, both wired and
wireless, that can connect to a computer network. Wireless LAN client devices include vari-
ous...
... networks.
Taking Adjacent-Channel and Co-channel Interference into Consideration
when Planning a New Wireless Network
As a wirelessnetwork engineer, you are tasked with deploying a new wireless ... of IEEE 802.11 wireless networks can be affected when they are co-
located with IEEE 802.15 wireless personal area networks or WPANs. Bluetooth is an
example of a personal area network. Like ... familiar with the frequencies used for wireless networks. Know the unlicensed ISM
and UNII bands available for use with wireless networks.
Understand wirelessnetwork coverage and capacity. Know...
... in other technology such as radio
and TV. Wireless broadband provides high-speed wireless data communications and wire-
less internet over a wide area network. Wideband uses a wide range of frequencies, ... communications
using IEEE 802.11 wireless LAN systems; it is implied with RF line of sight. If a wireless
LAN engineer was planning on connecting two buildings together using a wireless LAN
link, one ... beam)
With the large number of wireless LAN devices available, it is a challenging task to
accomplish the same polarization for all devices on the network. Performing a wireless
LAN site survey...
... successfully perform a wireless LAN site survey and design of a
wireless network. We looked at several examples of deployment scenarios and case studies
from different manufacturers of wireless LAN equipment ... wireless networks would be ideal. However, freeware or shareware pro-
grams may be satisfactory. Figure 9.7 shows an example of a software program that can be
used to find existing wireless networks.
FIGURE ... ideal site survey results.
How many users anticipate using the wireless network? The number of expected users
of the wirelessnetwork is valuable information to have. Knowing the number of users...
... –72 –67 –72
6/5.5 –79 –74 –75
2 –81 –76 N/A
1 –84 –79 N/A
Source: CertifiedWirelessNetworkAdministrator (CWNA)
In IEEE 802.11 wireless LAN technology, the received signal strength indi-
cator ... Existing
Network Characteristics
Existing wireless networks can play a big role in a new wireless LAN deployment. Under-
standing the current location of infrastructure and other wireless LAN ... deployment?
ÛN
What effect will the neighboring wireless networks have on this deployment?
ÛN
Ignoring existing wireless networks may have a significant impact on how the wireless
LAN will operate and result...
... including Ethernet
networks, Bluetooth, digital cameras, RFID, and Wi-Fi networks.
contention In wireless networking, multiple devices competing for a chance to send data
on the network using an ... of use of the wireless network.
Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) An access method used
in wireless networking that attempts to avoid collisions on a network.
Carrier ... Maintaining Wireless Networks
Summary
In this chapter, we discussed some troubleshooting and maintenance concerns that may
involve wireless networking. This included identifying wireless LAN...