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Definition:  The  OSI model  defines internetworking in terms of a vertical stack of seven layers.  Upper layers  of the OSI model represent software that implements network services like encryption and connection management.  Lower layers  of the OSI model implement more primitive, hardware-oriented functions like routing, addressing, and  flow control . Data communication in the OSI model starts with the top layer of the stack at the sending side, travels down the stack to the sender's lowest (bottom) layer, then traverses the physical network connection to the bottom layer on the receiving side, and up its OSI model stack. The OSI model was introduced in 1984. Designed to be an abstract model and teaching tool, the OSI model remains a useful for learning about today's popular network technologies like  Ethernet  and protocols like  IP . More  -  How Computer Networks Work - Introduction to Protocols...

Difference Between Guided and Unguided Media: The computer and other communicating devices represent data in the form of signals. The signals transmit between communicating devices in the form of electromagnetic energy, and hence the signals are called  electromagnetic signals . Electromagnetic signals are the combination of electric and magnetic fields that vibrates in relation to each other. The electromagnetic signals can travel through various transmission media. The transmission media is broadly classified into two categories that are  guided  and  unguided   media . The basic difference between guided and unguided media is that in the  guided media , the signal travels through a physical medium whereas, in  unguided media,  the signal travel through the air. There are some more differences between guided and unguided media which I have discussed with the help of comparison chart shown below. BASIS FOR COMPARISON GUIDED MEDIA UN...

Let’s  Get Google Adsense Account Approved , Fast, easy and never seen before! You are one of those bloggers who are still in the race of making money online and now you wish to get an AdSense account for your site/blog and want to earn good revenue from your site? Right? I know! Getting Google AdSense account approved is the desire of every newbie blogger, in fact, of all bloggers. But it’s not that easy to get Google AdSense account approved for your sites. The reason is Google is very strict for approving new AdSense accounts because they don’t want to make their great community of publishers and advertisers spammy by approving all kind of sites. So, it’s not easy to get an AdSense account, but you are lucky because you are here. Before you start reading this guide, I would like to say, grab a cup of tea (of course, you can take coffee too) and close the Facebook tab so that you can focus here. Why Google AdSense Is The Best? No doub...

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Have you ever wondered why famous YouTube personalities treat their channels as a full-time job? Well, the answer is simple! It’s because they earn handsome amount of money from their YouTube Channels. Recently, New York Times did a profile on Olga Kay, a famous YouTuber, and revealed she has been earning $100,000 – $130,000 from her YouTube Channel per year ( thats $8.3k – 10.8k per month) for last three years. In the same way, many Pakistani social media celebrities (and even media channels) put their videos online on YouTube. Thanks to  YouTube monetisation,  these YouTubers and TV channels make money when people watch their videos. This serves as a nice revenue stream for them. Does that not sound intriguing? In fact, even you can too earn money online by uploading videos on YouTube and bringing traffic to your YouTube channel. And here’s a guide to get you started. How to Earn Online via YouTube Here are simple rules: • Make a YouTube Channel • Make video...