NTP,The,Need,for,Accurate,Time communication NTP - The Need for Accurate Time


The Nokia Mobile Company is the undisputed leader in mobile world, they have latest technology and capability to deliver world class handsets at no extra costs. The N series, E series and C series phones have already rocked the world with th But when we talk about the handsets, undoubtedly, Nokia is the King of mobile phone market and LG stood at the third position. In this article we are concentrating on Nokia E5 from the house of Nokia and LG GM360 Viewty Snap by LG Mobile Com


Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable{mso-style-name:"Table Normal";mso-tstyle-rowband-size:0;mso-tstyle-colband-size:0;mso-style-noshow:yes;mso-style-priority:99;mso-style-qformat:yes;mso-style-parent:"";mso-padding-alt:0cm 5.4pt 0cm 5.4pt;mso-para-margin-top:0cm;mso-para-margin-right:0cm;mso-para-margin-bottom:10.0pt;mso-para-margin-left:0cm;line-height:115%;mso-pagination:widow-orphan;font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"Times New Roman";mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;}Tellingthe time is incredibly important for our day to day lives. We need to know whattime to get up for work, when to catch the bus and even when to go to bed toensure we get enough shut eye.Generallyfor this type of timekeeping mechanical or digital watches provide us withample accuracy. A digital watch will probably not lose more than a second overthe space of a week and I’m sure your boss won’t be too mad if you arrive asecond late for your shift.However,when it comes to transmitting data over the Internet, controlling satellites oreven purchasing shares on the stock market more accurate timing is required.Computer networks rely on timekeeping for nearly all their applications,from sending an email to saving data, a timestamp is necessary for computer tokeep track. Also routers and switches all need to run at the same rate, out ofsync devices can lead to data being lost and even entire connections.For satellite navigation, long used by ships and airlinesbut now increasingly popular in modern cars, accuracy to within a millisecond (athousandth of a second) is essential as light (and therefore radio waves) cantravel 300 km in that time so any tiny error in the time signal would meansatellite navigation could be inaccurate by hundreds of miles.Computers need to not only be synchronized to their networkbut and time sensitive transactions with other networks, computers or over the Internetalso require synchronization. Imagine bidding on Ebay and placing the last bidonly for the auction houses computer running a different time recognizing an earlierbidder as the last one, you would certainly be annoyed.For this reason a globalstandardised time scaleis used to allow all computers across the globe to synchronise to the exactsame time source. This global scale is called UTC (Universal Coordinated Time).UTC time is based on International Atomic Time (TAI) whichis the time as told by an international collective of atomic clocks (260 in 40different laboratories around the globe) where an average is taken meaning thatTAI is accurate to within one second every three million years. UTC time has leap seconds added (or taken away) every yearor so to compensate with the slowing (and occasional speeding up) of the Earthsrotation as our planet is actually 100,000 times less reliable than an atomicclock and without leap seconds noon would eventually become midnight (albeit in40,000 years or so).Computers use a protocol called NTP (Network Time Protocol)which can receive a UTC time signal either through the Internet or via aspecialist radio transmission from a physics laboratory or via the GPS network.NTP servers then ensure that all devices connected to thatnetwork are synchronized to UTC allowing computers across the globe tocommunicate effectively with each other.

NTP,The,Need,for,Accurate,Time

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