What is a Subnet Mask? An IP address has two components, the network address and the host address. A subnet mask separates the IP address into the network and host addresses (<network><host>). Subnetting further divides the host part of an IP address into a subnet and host address (<network><subnet><host>) if additional subnetwork is needed. A Subnet mask is a 32-bit number that masks an IP address, and divides the IP address into network address and host address. Examples of commonly used netmasks for classed networks are 8-bits (Class A), 16-bits (Class B) and 24-bits (Class C), and classless networks are as follows: Subnetting an IP network is to separate a big network into smaller multiple networks for reorganization and security purposes. Applying a subnet mask to an IP address separates network address from host address. Subnetting Network Here is another scenario where subnetting is needed. The web host will have the subnet mask of 216.3.128.128 (/25). CIDR - Classless Inter Domain Routing
Blog Computing the optimal road trip across South America By popular request, I’ve created another follow-up to my posts about computing optimal road trips across the U.S. and Europe. This time, I made an optimal road trip around South America. If you’d like to get into the nitty-gritty of… Computing the optimal road trip across Europe As a follow-up to my post about computing optimal road trips across the U.S., I thought it’d be fun to make a road trip map for Europe as well. Computing the optimal road trip across the U.S. Last week, Tracy Staedter from Discovery News proposed an interesting idea to me: Why not use the same algorithm from my Where’s Waldo article to compute the optimal road trip across every state in the U.S.? Top 25 richest living comedians It’s fairly common knowledge that comedy isn’t a terribly lucrative career. Revisiting the Six Degrees of Kevin Bacon In early 1994, three Albright College students were watching Footloose during a heavy snowstorm. Python usage survey 2014
Dick Morris: Obama vs. First Amendment The Federal Communications Commission is about to launch a direct assault on the freedom of the media to cover news as it chooses. The program, called the Multi-Market Study of Critical Information Needs, involves requesting information from all radio and TV stations, as well as newspapers, about how they cover news, who decides what gets covered, and what criteria they use in the decision. The FCC will also conduct a “content analysis” of one week’s coverage to decide whether each of eight “critical” categories of news is being given adequate attention. While the results of the study will not impose mandatory changes on the media’s news decisions, the “recommendations” from the FCC will carry the weight of law because all radio and television stations must come up for license renewal every eight years. No surprise, the “critical areas” include such liberal topics as the environment and economic opportunity. • What is the news philosophy of the station? • Who are your main competitors?
The Venus Project WWW.SINA.COM Not All Passports Are Created Equal, As This Map Will Tell You (INFOGRAPHIC) A passport from the United States allows its citizens free access to well over 100 other countries. But not all travelers have such an overwhelming spread of choices: Residents of Iraq, for example, can access only 31 countries with their passports. Venturing away from Afghanistan? Your options dwindle to 28 countries, according to the infographic below. You might say we’ve been taking our travel freedom for granted here in the U.S. However, that freedom comes with a price. In this infographic map from the folks at GOOD*, countries are color-coded based on the “power” of their passports. See the full-size infographic here. *Infographic is based on data from June 2014. Also on HuffPost: The World’s Worst Passports 10. Lebanese citizens can access 38 countries without a visa.
DOD omits details of secret disclosures in 'Zero Dark Thirty' report - The Hill's DEFCON Hill Pentagon investigators intentionally omitted details of possible disclosures of top-secret information to the makers of "Zero Dark Thirty" in their final review of the department's involvement in the film. The movie was a fictionalized chronicle of U.S. intelligence and counterterrorism operations leading up to the May 2011 Navy SEAL raid that killed al Qaeda leader Osama bin Laden. The Pentagon inspector general's final report, released Friday, said the Department of Defense (DOD) and CIA took all appropriate measures to protect sensitive details, including the identities of CIA operatives and Special Operations Forces members, from becoming public. "We did not identify any instances whereby any special operations tactics, techniques and procedures-related information" were provided to filmmakers Mark Boal and Kathryn Bigelow, the report said. Rep. “It appears political pressure is the reason that it’s going to be held,” King said. Panetta was CIA chief at the time of the bin Laden raid.
The Top 100 Documentaries We Can Use To Change The World By Films For Action / filmsforaction.org/ Jun 10, 2015 Documentaries have an incredible power to raise awareness and create transformative changes in consciousness both at the personal and global levels. Over the last 8 years, we've watched hundreds of social change documentaries and cataloged the best of them on the site. There's now so many that we realized we needed to filter this down even further. So what follows is our list of the very best 100 - hand-picked for their quality, insight and potential to inspire positive change. All of the films have been selected because they are either free to watch online, or can be rented online. Did we miss anything really good?
Templeton Prize | The John Templeton Foundation What is the best way to live? How large is God? How are finite beings related to the infinite? What was God's purpose in creating the universe? How can we be helpful? These ageless questions can inspire people today just as they have inspired people throughout the ages, linking the human soul to philosophy and to the love of wisdom. Purpose The Templeton Prize honors a living person who has made an exceptional contribution to affirming life's spiritual dimension, whether through insight, discovery, or practical works. Men and women of any creed, profession, or national origin may be nominated for the Templeton Prize. What these remarkable people have shared is a commitment to exploring one or more of the Big Questions at the core of the John Templeton Foundation's mandate. Criteria The qualities sought in a Templeton Prize nominee include creativity and innovation, rigor and impact.
Munich Day Trips - Best Munich Day Trips If you have seen Munich’s most popular attractions, how about leaving the city for a day and exploring the lovely surroundings of the Bavarian capital? Take a day trip from Munich and find out more about Bavaria’s history, nature, and culture. A great way to get around Bavaria is by train, especially if you get the Bavaria train ticket. 1. Copyright: Romantische Straße Touristik-AG GbR The world’s most popular fairy-tale castle is just a beautiful train ride away from Munich: Castle Neuschwanstein, nestled in the Bavarian Alps, was the dream-come-true of King Ludwig II, who built this fantastic palace in 1869. Getting There: Take the local train to Füssen, then the bus RVA/OVG 73 in the direction to Steingaden / Garmisch-Partenkirchen or the bus RVA/OVG 78 in the direction to Schwangau until you reach the stop Hohenschwangau / Alpseestraße. Visitor's Guide to Neuschwanstein 2. Getting There: Take the suburban train (S Bahn) S 8 to Herrsching, then take the bus line “Rauner” to the brewery.
Internet Companies Want Permission To Reveal Details of NSA Spy Program Eurasia Review By VOA Three big Internet companies want the Obama administration to let them reveal details of federal court orders to turn over information about their users to U.S. spy agencies. Google, Facebook and Microsoft say they want everything transparent and out in the open. Google’s chief legal official said Tuesday his company has “nothing to hide.” Google says media reports that it gives the spy agencies unlimited access to information about its customers are not true. The National Security Agency has acknowledged leaked newspaper reports that its program called PRISM collects emails and other data from Internet companies. A former NSA contractor, Edward Snowden, leaked the story about PRISM and NSA monitoring of telephone calls to The Guardian and Washington Post. He said it is important to reveal what he says is the government’s massive surveillance program on private citizens. The U.S. says information gathered by the NSA has foiled terrorist plots. About the author: VOA Visit VOA's website
« Hearthstone » contre « Magic Duels », le match des jeux de cartes en ligne Loin des blisters et du carton des années 1990, les cartes à collectionner s'abattent aussi en ligne. Un nouveau terrain de jeu où s'affrontent deux mastodontes du secteur, Blizzard et Wizards of the Coast. D'un côté, Magic Duels, sorti ce 11 août sur PC, iOS et Xbox One (avec une version PS4 à venir). De l'autre, Hearthstone, dont la dernière extension sort ce 24 août, sur PC, iOS et Android. Ces deux jeux font partie de la même famille : les jeux de cartes à collectionner, ou trading card games (TCG). Nés au début des années 1990 comme de véritables cartes en carton, ces jeux ont en général plusieurs points communs : on y gère des ressources qui permettent de jouer d'autres cartes ; ils comportent une part de stratégie et une part de hasard ; et ils sont conçus pour que le joueur ait très envie d'acheter davantage de cartes, utilisées pour améliorer son ou ses jeux, également nommés « decks ». Au-delà des deux jeux, ce sont aussi deux entreprises très différentes qui s'affrontent.
乡下-campagnes chinoises 1Au début du mois d’octobre 2005, lors de la cinquième session plénière du XVIe Comité central, le Parti communiste chinois a officiellement adopté le 11e plan quinquennal (2006-2010) au cours duquel il appelle à l’« édification de nouvelles campagnes socialistes (jianshe shehui zhuyi xin nongcun) ». Cette nouvelle politique à destination des campagnes, où vivent encore 750 millions de Chinois, a pour objectif principal de résoudre les différents maux qui accablent une grande partie du monde rural depuis maintenant près d’une quinzaine d’années. Après avoir placé les campagnes au centre des premières réformes, les autorités chinoises se sont ensuite penchées sur le développement des villes, reléguant les questions rurales au second plan. Les campagnes chinoises n’ont donc pas pleinement profité de la fulgurante ascension économique du pays durant la décennie 1990. 3Cet article n’a pas pour objectif d’esquisser un portrait de l’agriculture chinoise. 3 Ibid. Des campagnes divisées Carte 1
Former NSA Boss: This Leak Teaches The World That America Can't Keep Secrets We've been trying to understand why the NSA and its supporters are both trying to play down the seriousness of the leak, while also claiming that it's incredibly dangerous, and I think we may finally have an explanation from former NSA and CIA boss Michael Hayden, who has given the most bizarre explanation yet: “It informs our adversaries. It puts American companies at risk internationally for simply complying with our laws,” said Mike Hayden, a former director of the NSA and a former director of the CIA. Actually, I think it teaches the exact opposite. Separately, that same report notes that within the NSA, people are freaking out: The impact of the leak inside the NSA has been enormous. If this was no big deal and just the revelation of a basic internal government computer system to deal with statutorily authorized data collection, then why would they be freaking out so much?