Wiring the network

Upon completion you will be able to: Understand the different versions of wired Ethernet, understand wireless Ethernet, understand the types of point-to-point WANs, understand the types of switched WANs, especially ATM, differentiate between repeaters, bridges, routers, and hubs.

60p tangtuy09 26-04-2016 34 3   Download

The availability of extensive genomic information and content has spawned an era of high-throughput screening that is generating large sets of func-tional genomic data. In particular, the need to understand the biochemical wiring within a cell has introduced novel approaches to map the intricate networks of biological interactions arising from the interactions of proteins.

14p fptmusic 12-04-2013 29 2   Download

Radio based communication, open air The attacker, having a radio transmitter and receiver with the same radio frequency of the underlying wireless network, can easily: Intercept wireless data Connect his computing devices to a nearby wireless network Inject new packets to an existing wireless network Jam a particular wireless channel using a jamming device Security measures Implement encryption algorithms, authentication algorithms, and integrity-check algorithms at the data-link layer Provide network access with wired equivalent privacy Higher-layer protocols and applications can be used ...

32p muathu_102 28-01-2013 54 5   Download

In 1985, the Computer Society of the IEEE started a project, called Project 802, to set standards to enable intercommunication among equipment from a variety of manufacturers. Project 802 is a way of specifying functions of the physical layer and the data link layer of major LAN protocols.

40p trada85 22-01-2013 55 8   Download

In random access or contention methods, no station is superior to another station and none is assigned the control over another. No station permits, or does not permit, another station to send. At each instance, a station that has data to send uses a procedure defined by the protocol to make a decision on whether or not to send.

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The data link layer needs to pack bits into frames, so that each frame is distinguishable from another. Our postal system practices a type of framing. The simple act of inserting a letter into an envelope separates one piece of information from another; the envelope serves as the delimiter.

103p trada85 22-01-2013 75 9   Download

Guided - wire Unguided - wireless Characteristics and quality determined by medium and signal For guided, the medium is more important For unguided, the bandwidth produced by the antenna is more important Key concerns are data rate and distance

27p trada85 18-01-2013 62 6   Download

Thủ thuật lấy lại mật khật khẩu wifi .Mạng Wi-Fi cung cấp cho bạn các tùy chọn mã hóa mạng với WPA (Wi-Fi Protected Access) hoặc WEP key (Wired Equivalent Privacy). Đôi khi vì để ở chế độ tự động connect vào mạng bạn thường sử dụng nên dẫn đến tình trạng quên mất mật khẩu. 6 bước dưới đây sẽ giúp bạn dễ dàng xem lại mật khẩu WiFi. Bước 1: Vào Control Panel: Start Menu Control Panel Network and Internet. Bước 2: Nhấp chuột vào Network & Sharing Center. Hoặc có thể vào Network & Sharing Center bằng...

5p chiecxedien 02-01-2013 117 6   Download

The demand of transmission of images and video is increasing quickly recently and researchers are trying to invest good solutions to improve the quality of these over wireless networks. There are still challenges due to the different characteristics and quality of images between wired and wireless channels. An important issue is congestion control to ensure network stability and achieve a reasonably fair distribution of the network resources among the users.

8p tuanlocmuido 19-12-2012 60 3   Download

•As PC became more common, it became obvious one would need to share data and peripherals between them efficiently.Floppy discs could not be the solution. Hence the idea of a network.•The necessities to have one database that many users can access simultaneously made networking very relevant.•Great demand to share devices ( e.g. printer sharing in companies).

35p hoangchung_dtvt 10-12-2012 58 8   Download

Ethical Hacking Version 5 Module XV Hacking Wireless Networks Module Objective This module will familiarize you with the following: Concept of Wireless Networking Effects of Wireless Attacks on Business Types of Wireless Networks Wireless Standards Antennas Wireless Access Points SSID Setting up a WLAN Detecting a Wireless Network EC-Council How to Access a WLAN Wired Equivalent Privacy Wi-Fi Protected Access Steps for Hacking Wireless Networks Cracking WEP Tools for Scanning Tools for Sniffing Securing Wireless Networks WIDZ and RADIUS Copyright © by EC-Council All Rights reserved.

70p jackiechan_2912 02-04-2011 86 18   Download

Việc các attacker có thể xâm nhập vào các mạng wifi của tổ chức, thông qua việc crack khóa mã hóa truy cập vào wifi access point. Cho dù các công nghệ mã hóa mạng không dây hiện nay là rất mạnh như Wired Equivalent Privacy (WEP) và Wi-Fi Protected Access (WPA và WPA-2). Nhưng với những chương trình và thiết bị chuyên dụng, attacker có thể thực hiện thành công ý định của mình. Dưới đây là một trong những demo sử dụng AirPcap (USB 2.0 Wireless Capture Adapter – card bắt tín hiệu wifi) và chương trình Cain...

5p kimthong 23-03-2011 210 56   Download

This paper describes an architecture for differentiation of Quality of Service in heterogeneous wireless-wired networks. This architecture applies an “all-IP” paradigm, with embedded mobility of users. The architecture allows for multiple types of access networks, and enables user roaming between different operator domains.

12p trinhhiephoa 30-12-2010 164 42   Download

Part I: NS fundamentals, Wired world, Walk-thru an example NS script. Part II: Visualization tools & other utilities, Help and references. Outcome of this tutorial: You know the concept of ns2. You are able to set-up a network topology on your own (with nameditor). You are able to add traffic like ftp/telnet or cbr to your simulation. You are able to start the ns and the nam. You understand the ns-script code generated by nam-editor.

55p son2483 29-10-2010 147 44   Download

Introduction to Signal Transmission and the Basic Line Circuit To make it suitable for carriage over most telecommunications networks, information must first be encoded in an electrical manner, as anelectrical signal. Only such signalscan be conveyed over the wires and exchanges that comprise ‘transport the mechanism’ of telecommunications networks.Overtheyears,avarietyofdifferentmethodshave been developed forencoding different types of information.

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Protocols for wireless applications Wireless data networks present a more constrained communication environment compared to wired networks. Because of fundamental limitations of power, available spectrum, and mobility, wireless data networks tend to have less bandwidth than traditional networks, more latency than traditional networks, less connection stability than other network technologies, and less predictable availability.

19p huggoo 20-08-2010 81 8   Download

18.3. Broadband Connections If your Mac is connected wirelessly or, um, wirefully to a cable modem, DSL, or office network, you're one of the lucky ones. You have a high-speed broadband connection to the Internet that's always available, always on.

6p daisuphu 28-07-2010 123 5   Download

13.1. Wiring the Network Most people connect their computers using one of two connection systems: Ethernet or Wi-Fi (which Apple calls AirPort).

6p kisiheo 26-07-2010 69 5   Download

13.2. File Sharing When you're done wiring (or not wiring, as the case may be), your network is ready. Your Mac should "see" any Ethernet or shared USB printers, in readiness to print (Chapter 14)

8p kisiheo 26-07-2010 109 10   Download

Digital input modules can be used to connect the PLC to digital process signals. They are suitable for connecting standard switches and two-wire proximity switches (BERO).

5p hoandk4 25-03-2010 131 13   Download