High-speed multimedia radio Basics[edit] Capabilities[edit] HSMM can support most of the traffic that the Internet currently does, including video chat, voice, instant messaging, the Web (HTTP), file transfer (FTP), and forums. The only differences being that with HSMM, such services are community instead of commercially implemented and it is mostly wireless. Frequencies and channels[edit] The following is a list of the 802.11 channels that overlap into an amateur radio band under the FCC in the United States. The following images show the overlapping relationship of the Part 15 unlicensed bands and the Part 97 licensed bands. 2.4 GHz 802.11b/g 5.8 GHz 802.11a Acronyms Used: (amateur radio) (ISM) (Radar) Channels and power[edit] 802.11a[edit] The 802.11a amateur radio band consists of twelve non-overlapping channels in the 5.650–5.925 GHz (5 cm) band. 802.11b[edit] The 802.11b amateur radio band consists of eight overlapping channels in the 2.390–2.450 GHz (13 cm) band. 802.11g[edit] 802.11n[edit] Frequency sharing[edit]
IEEE 802.11 IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in the 2.4, 3.6, 5 and 60 GHz frequency bands. They are created and maintained by the IEEE LAN/MAN Standards Committee (IEEE 802). The base version of the standard was released in 1997 and has had subsequent amendments. The standard and amendments provide the basis for wireless network products using the Wi-Fi brand. While each amendment is officially revoked when it is incorporated in the latest version of the standard, the corporate world tends to market to the revisions because they concisely denote capabilities of their products. As a result, in the market place, each revision tends to become its own standard. The LinksysWRT54G contains a router with an 802.11b/g radio and two antennae General description[edit] History[edit] 802.11 technology has its origins in a 1985 ruling by the U.S. Protocol[edit] 802.11b[edit]
Hacking Techniques in Wireless Networks Prabhaker Mateti Department of Computer Science and EngineeringWright State UniversityDayton, Ohio 45435-0001 This article is scheduled to appear in “The Handbook of Information Security”, Hossein Bidgoli (Editor-in-Chief), John Wiley & Sons, Inc., 2005. 1. Introduction. 2 2. 2.1 Stations and Access Points. 3 2.2 Channels. 4 2.4 Infrastructure and Ad Hoc Modes. 4 2.5 Frames. 4 2.6 Authentication. 5 2.7 Association. 6 3. 3.1 Passive Scanning. 7 3.2 Detection of SSID.. 8 3.3 Collecting the MAC Addresses. 8 3.4 Collecting the Frames for Cracking WEP. 8 3.5 Detection of the Sniffers. 9 4. 4.1 MAC Address Spoofing. 10 4.2 IP spoofing. 10 4.3 Frame Spoofing. 11 5. 5.1 Detection of SSID.. 12 5.2 Detection of APs and stations. 12 5.3 Detection of Probing. 12 6. 6.1 Configuration. 12 6.2 Defeating MAC Filtering. 13 6.3 Rogue AP. 13 6.4 Trojan AP. 13 6.5 Equipment Flaws. 13 7. 7.1 Jamming the Air Waves. 14 7.2 Flooding with Associations. 14 7.3 Forged Dissociation. 14 7.4 Forged Deauthentication. 15 7.5 Power Saving. 15 8.
Invent Your Own Computer Games with Python - Chapters Chapter 1 Read online: Chapter 1 - Installing Python Videos: Chapter 2 Read online: Chapter 2 - The Interactive Shell Chapter 3 Read online: Chapter 3 - Strings Download source: hello.py Copy source to clipboard: Use the online diff tool to find typos in your code: hello.py Chapter 4 Read online: Chapter 4 - Guess the Number Download source: guess.py Use the online diff tool to find typos in your code: guess.py Chapter 5 Read online: Chapter 5 - Jokes Download source: jokes.py Use the online diff tool to find typos in your code: jokes.py Chapter 6 Read online: Chapter 6 - Dragon Realm Download source: dragon.py Use the online diff tool to find typos in your code: dragon.py Chapter 7 Read online: Chapter 7 - Using the Debugger Chapter 8 Read online: Chapter 8 - Flow Charts Chapter 9 Read online: Chapter 9 - Hangman Download source: hangman.py Use the online diff tool to find typos in your code: hangman.py Chapter 10 Read online: Chapter 10 - Tic Tac Toe Download source: tictactoe.py Chapter 11 Download source: bagels.py
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Learning How to Code Has Never Been Easier Programming isn’t just a niche specialization anymore, rather a necessity for tech-professionals regardless of the industry in which they work. Thankfully for them, it couldn’t be any easier.As such, there’s a big push lately to make coding literacy more widespread among the general populace. Even Mayor Bloomberg is getting in on the act, pledging to learn basic coding in 2012 as his New Year’s resolution. For those who want to learn to code, there are a number of online school coding programs that can guide them through the process. Codecademy Probably the most popular website at the moment for those looking to learn coding is Codecademy, a platform that emphasizes doing while learning. Treehouse Though it doesn’t have the name recognition of Codecademy just yet, Team Tree House is nevertheless a powerful way to learn coding. Code Year Rounding out the pack is Code Year, which is actually offered by the same folks behind Codecademy. Final Thoughts
50 Places You Can Learn to Code (for Free) Online If you’re curious about learning a programming language then you’re in luck: there’s no shortage of resources for learning how to code online. University-level courses, tutorials, cheat sheets, and coding communities all offer excellent ways to pick up a new language, and maybe even a new job, too. Read on, and you’ll discover 50 great places to learn how to code, for free, online. University Many big names in education including MIT and Stanford offer programming courses, absolutely free. General If you’re just dipping your toes into programming, or you want to find a variety of resources, these sites offer several different ways to learn how to code. Community Learn how to code on these sites with a heavy community influence ready to offer help to newbs. Language Specific Drill down to the language you really want on these sites, offering expansive learning in one or two specific languages.
How To Find Product Key Of Any Software » Product Key Finder Tips How to find the product key of any software that you want..?? A product key is a unique identification number or code, used in software like operating systems and games, to prevent counterfeiting and piracy. This is a specific software program. For the most part, a product key operating system is an insignificant number, but when you need to re-install your OS, suddenly the product key becomes the code harder to find. Find Product Key Of Windows 7 A product key Windows 7 is needed to activate the system, format the Windows 7, or in the event of a system crash, re-installing Windows 7 on your computer. How to find the product key of Windows 7 The product key number for Windows 7 is a alphanumeric pattern of 25 characters, divided into 5 groups of 5 characters each. * The product key used to activate the 32-bit or 64-bit editions of Windows 7 * Product keys are also unique to the version of Windows 7 (Ultimate, Premium, Basic, 32 or 64 bits). Ways to Find Windows 7 Product Key Number Software
Why every single one of you should learn a little code As technology becomes more and more ingrained in our everyday lives, you have to make a choice: Are you a consumer of tech, or are you someone who understands it? Buying the latest iPhone and keeping up with the who-works-where, who’s-launching-what tech gossip is all fine and good, but if you can’t code, you ain’t no kind of techie. Startups like Codecademy are making it easy to learn coding online — easy enough for school children, in fact. More intense programs like Bloc take learners from total noob to novice programmer in a two-month bootcamp. And one game, Coderacer, will have you on the ground and coding in just five minutes. All this supply exists on the market because there’s a huge demand for coding education. “While the entrepreneurial community has exploded within the past year or two, there’s a constant shortage of developers and a tremendous number of businesspeople trying to learn to code,” said Codecademy founder Zach Sims to VentureBeat in a recent chat.
Sorting Algorithm Animations Algorithms in Java, Parts 1-4, 3rd edition by Robert Sedgewick. Addison Wesley, 2003. Quicksort is Optimal by Robert Sedgewick and Jon Bentley, Knuthfest, Stanford University, January, 2002. Dual Pivot Quicksort: Code by Discussion. Bubble-sort with Hungarian (“Csángó”) folk dance YouTube video, created at Sapientia University, Tirgu Mures (Marosvásárhely), Romania. Select-sort with Gypsy folk dance YouTube video, created at Sapientia University, Tirgu Mures (Marosvásárhely), Romania. Sorting Out Sorting, Ronald M. Top 10 Portable Tools for Network Administrators by Wesley David - October 27, 2010 Working as a systems administrator oftentimes requires you to interact with many different computers in a single day. One minute you're dealing with cranky users complaining about slow performance on their PCs and the next minute your soothing badly behaving domain controllers. Having to interact with so many different PCs makes it all the more advantageous to keep a core set of tools with you at all times. 1. As of June 2009 there are 66 tools in the suite. As a bonus, each of the Sysinternals tools are available "live" at "live.sysinternals.com\tools" which is essentially just a file share open to the internet. 2. There's a bit of confusion about this topic. Furthering the departure from normalcy, it appears that the term "Support Tools" has been abandoned in favor of the term "Remote Server Administration Tools" (RSAT). 3. Nary does a day go by that your average admin doesn't have to scan a network, IP range or port scan a node. 4. "What about IE!"