business benefits of local area network
Wireless Local Area Networks
Ngày tải lên :
13/09/2012, 10:52
... AP
Quick and easy setup of a wireless network
ã
Drawback is that wireless clients can only
communicate among themselves
Wireless Communications
Wireless Local Area Networks
4
WLAN Components
ã
Minimal ... wireless local area networks
(WLANs)
ã
Wireless NIC performs same functions as wired NIC
ã
Access points parts
Antenna
Radio transceiver
RJ-45 wired network interface
8
Wireless Network Interface ... wired network interface port
ã
AP functions
Wireless communications base station
Bridge between the wireless and wired networks
6
Wireless Network Interface Card
(continued)
5
Wireless Network...
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LÝ THUYẾT VỀ MẠNG LAN (LOCAL AREA NETWORK)
Ngày tải lên :
25/04/2013, 11:58
... nhất được nhận dạng bởi thiết bị hai đầu.
5.4 CÔNG NGHỆ VLAN:
VLAN là viết tắt của Virtual Local Area Network hay còn gọi là mạng LAN
ảo. Một VLAN được định nghĩa là một nhóm logic các thiết ... hình native VLAN thì
phải cấu hình ở giao diện vật lý.
CHƯƠNG II
LÝ THUYẾT VỀ MẠNG
WAN (WIDE AREA NETWORK)
I. KHÁI NIỆM :
Là mạng được thiết lập để liên kết các máy tính của hai hay nhiều khu ... trí rất xa nhau, ví dụ như
những quốc gia khác nhau, thì khi đó ta có mạng diện rộng WAN(Wide Area
Network)
Trang
NGUYỄN ĐÌNH CÔNG – 36CLTH
2929
V./. CÁC CÔNG NGHỆ MẠNG LAN :
5.1. CÔNG NGHỆ CHUYỂN...
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Wireless Local Area Networks
Ngày tải lên :
29/09/2013, 21:20
... carrier is of a very narrow bandwidth, which means that its data rate is slow. Figure
9.10 shows the spectrum for an OFDM transmission.
Wireless Local Area Networks 255
Figure 9.10 Detection of OFDM ... target of this group is to enhance the current 802.11 MAC to provide security improve-
ments.
9.7 Summary
In this chapter we cover the area of Wireless Local Area Networks by focusing on a number
of ... requirement for every network, it is an even more
Wireless Local Area Networks 245
Figure 9.5 Example of frequency reuse
ẵ2
21I
Ê ranfị Ê Slot_time, where i is the number of times the station...
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CCNA Layer 2 Switching - Virtual Local Area Networks Lab Scenario
Ngày tải lên :
19/10/2013, 02:15
... Trunking: Off, Encapsulation type: Unknown
SwitchA#show trunk b
DISL state: Off, Trunking: Off, Encapsulation type: Unknown
SwitchA#
Note that "Off" is the default DISL state. "Off" ... Page 1 of 17
http://www.certificationzone.com/studyguides /?Issue=34&IssueDate=04-01-2001&CP= 11/06/01
Date of Issue: 04-01-2001
CCNA Layer 2 Switching - Virtual Local
Area Networks
Lab ... Enterprise edition software. The Cisco IOS software CLI is not
available if the switch has been configured with the Standard edition software.
While it is possible to complete most of this lab using...
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Tài liệu The Case for Virtual Local Area Networks (VLANs) ppt
Ngày tải lên :
17/01/2014, 06:20
... an IP network or
subnet.
In most practical networks, all devices in a small business or enterprise network are not located on the same
Ethernet network broadcast domain.
W
e separate the networks ... installation of Ethernet networks, a change was
made to the network topology
.
Networks were converted from
coaxial cable to twisted pair cabling by introducing a new device
into the network. That ... the history of Ethernet, the virtual LAN is a recent addition. The VLAN was introduced to solve a number of
networking issues. In this whitepaper you will learn about the evolution of Ethernet,...
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Tài liệu Ethernet Signal Preservation In Factory-Terminated Patch Cords for Local Area Networks pptx
Ngày tải lên :
19/01/2014, 05:20
... wave
of an Ethernet signal is made of many different sine waves,
each important to creating the shape of the square wave.
Ethernet Signal Preservation
In Factory-Terminated Patch Cords for Local Area ... wave.
Figure 1: The square wave of an Ethernet signal.
Figure 3: Sine waves of varying frequencies.
The philosophy of the TrueNet system is to eliminate the
root causes of poor throughput in structured ... square wave is made up of
the sum of many sine waves. If anything should happen to
the energy in one or more of those sine waves as they travel
down the wire, the shape of the square wave can...
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Tài liệu Ethernet Signal PreservationIn Factory-Terminated Patch Cords for Local Area Networks ppt
Ngày tải lên :
25/01/2014, 06:24
... wave
of an Ethernet signal is made of many different sine waves,
each important to creating the shape of the square wave.
Ethernet Signal Preservation
In Factory-Terminated Patch Cords for Local Area ... effect of distorting the square wave, and causing
bit errors in Ethernet.
The technique of using specific patch cord lengths to reduce
errors has been confirmed with active network analysis of ... the network.
Zero
Energy
Maximum
Energy
Maximum
Energy
Wavelength
Figure 6: As a sine wave is generated, the greatest amount of
energy is released at peaks of the cycle.
The philosophy of the...
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Chapter 13 :Local Area Network Technology potx
Ngày tải lên :
06/03/2014, 09:21
... wire areas
❚
Reduced cost of wireless systems
❚
Improved performance of wireless systems
William Stallings
Data and Computer
Communications
Chapter 13
Local Area Network
Technology
LLC ... directions
❚
Joins two segments of cable
❚
No buffering
❚
No logical isolation of segments
❚
If two stations on different segments send at
the same time, packets will collide
❚
Only one path of segments and ... of cable used
❚
Single channel on cable
❚
Bi-directional
❚
Few kilometer range
❚
Ethernet (basis for 802.3) at 10Mbps
❚
50 ohm cable
Wireless LANs
❚
Mobility
❚
Flexibility
❚
Hard to wire areas
❚
Reduced...
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Thiết lập và định cấu hình cho một mạng LAN (Local Area Network) potx
Ngày tải lên :
29/03/2014, 14:20
... Thiết lập và định cấu hình cho một mạng LAN
(Local Area Network)
Thiết lập mạng: Lắp card mạng: ban đầu bạn phải lắp card mạng vào máy
tính bằng ... máy tính. Trong một mạng ngang hàng (Peer to Peer) các máy
tính sử dụng hệ điều hành của Microsoft thông thường sử dụng giao thức
TCP/IP (Transmission control protocol/ internet protocol). Cài ... TCP/IP cho từng máy (đối với Win 9x) bạn bạn tiến hành: Vào
My computer > Control Panel > Network > nếu tại đây bạn đã thấy có
giao thức TCP/IP rồi thì bạn khỏi cần add thêm nếu chưa...
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Mạng Local Area Network doc
Ngày tải lên :
21/06/2014, 00:20
... PDF Creator â Foxit Software
http://www.foxitsoftware.com For evaluation only.
ATHENA
Mng Local Area Network
Generated by Foxit PDF Creator â Foxit Software
http://www.foxitsoftware.com For evaluation ... PDF Creator â Foxit Software
http://www.foxitsoftware.com For evaluation only.
ATHENA
K Thut CSMA/CD
CSMA/CD
Generated by Foxit PDF Creator â Foxit Software
http://www.foxitsoftware.com For evaluation ... by Foxit PDF Creator â Foxit Software
http://www.foxitsoftware.com For evaluation only.
ATHENA
Generated by Foxit PDF Creator â Foxit Software
http://www.foxitsoftware.com For evaluation only.
...
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Báo cáo hóa học: " TCP-based window-size delegation method for TXOP Exchange in wireless local area networks" ppt
Ngày tải lên :
21/06/2014, 01:20
... delegation, TCP window size, TXOP Exchange, Wireless local area networks
1 Introduction
In offices, homes, and public spaces, IEEE 802.11 wire-
less local area n etworks (WLANs) has been extensive ly
used ... consider a n example
of a wireless access network with one AP and three
STAs,STAA,STAB,andSTAC.Iftheratioofthe
number of packets for STA A, B and C in the sending
queue of AP is a, b,andc, the ... delegation by controlling t he number of
packets for each STA in the AP sending queue.
There are a couple of possible ways of controlling the
ratio of the number of packets for STAs in the AP send-
ing...
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