Some students of Computer Networking especially those appearing in Certification exams such as Cisco Certification Exams or Juniper Certification Exams have problem in calculating wildcard mask. Some know the concept but their method is difficult that might result in wastage of time which may prove to be a problem in certification exams. Also, the wildcard mask is used in extensively in Access Control Lists (ACLs), EIGRP and OSPF, so learning how to calculate wildcard mask is important. We have decided to share a very simple method to calculate the wildcard mask efficiently and hopefully you will not have any ‘how to calculate wildcard mask?’ afterwards.

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The purpose of writing this post is to facilitate the students appearing in Cisco Certified Network Associate (CCNA) Exam and helping them pass it. We are confident that by preparing the undermentioned questions, your chances of passing Cisco Certified Network Associate (CCNA) Exam will greatly improve.

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Plain Old Telephone Service or POTS is the name given to the telephone system and service used during the late 19th century. It is a predecessor to more advanced telephony technologies like Public Switched Telephone Network (PSTN) and Integrated Services Digital Network (ISDN) that are used today. In this article, we will have brief look at the Plain Old Telephone Service, its general working including advantages and disadvantages of this service.

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Google+ is all the rage now a days. Many people are of the opinion that it will give Facebook a run for its money. The supporters of Google+ created some GIF images to show their love for Goolge+ and we will like to share them with our readers.

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iPhone was a smartphone-industry-changing product introduced by Apple. Since, its release millions of iPhones have been sold throughout the world. The latest version of iPhone currently in the market is iPhone 4. The expected date of release of newer version of Apple’s flagship product iPhone is expected to be around September this year. Although, it is still two months away. But it hasn’t stopped Apple fans all over the world, speculating about the features it will have. An artistic infographic was created by Infographic Labs to address the news features that will be introduced in iPhone 5. We have got hold of this infographic and we would like to share this with our readers.

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Medical checkups cost quite a fortune now a days. You have to undergo checkups and carry out different tests to diagnose the disease. The following infographic will give you some perspective regarding different medical checkups you may have to undergo depending upon your age.

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What Happens To A Computer When It Boots Up? You must have came across this question many a times. It may be easy for ‘geeks’ to answer but average user of the computer may find it difficult to answer that question. But it is not a problem anymore, just read the infographic below and you will see how easy it is to explain this question.

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We came across left handed people in our life quite a time. They can be your friends, parents or may be you are left handed yourself. The following infographic will help you in understanding some of the facts related to the life of left handed persons.

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