مفاهیم سرعت در شبکه

admin مه 25, 2016 آموزش عمومی

تما شما هم متوجه شده اید که با اینترنت دایل آپ هیچ وقت نمی توان از۷ کیلوبایت در ثانیه بیشتر دانلود نمود ولی اسم مودم های شما فکس مودم ۵۶ کیلو است و از همه مهمتر اینکه چرا بین سرعت اتصال و دریافت شما انقدر تفاوت وجود دارد حال می توانید علت این مساله را که یک دلیل منطقی و ساده است بدانید.

سرعت اتصال شما به اینترنت برحسب Kbps (کیلوبیت در ثانیه) نمایش داده می شود ولی سرعت دانلود بر حسب KBps (کیلوبایت بر ثانیه) سنجیده می شود و همچنین می دانیم که هر بایت معادل ۸ بیت می باشد.

پس اگر سرعت اینترنت دایل آپ شما ۵۶ Kbps (کیلو بیت در ثانیه) باشد با تقسیم عدد ۵۶ بر ۸ آن را به KBps (کیلو بایت در ثانیه) تبدیل کرده ایم و چون طبق قرار داد سرعت دانلود همواره برحسب KBps می باشد پس نتیجه می گیریم که سرعت دانلود شما با توجه به رابطه بالا که هر ۸ بیت یک بایت است باید برابر با ۷ KBps (کیلو بایت در ثانیه)باشد که چون هیچ وقت سرعت اتصال شما به اینترنت ۵۶ Kbps نیست و تلفات شبکه هم وجود دارد سرعت دانلود شما به این مقدار نمیرسد.

به این ترتیب برای سرویس های adsl نیز سرعت دانلود قابل محاسبه است

۱۲۸Kbps=16KBps

256Kbps=32KBps
512Kbps=64KBps
1024Kbps=128KBps
2048Kbps=256KBps

پس به کوچکی و بزرگی حرف b دقت کنید.

این هم یک اشتباه ساده بود که به همین سادگی بر طرف شد درضمن باید خاطر نشان نمود که سرعت واقعی دانلود وقتی دقیق است که ۲۰ درصد تلفات شبکه را نیز لحاظ کنیم ولی چون بیشتر شرکتهای ارائه دهنده اینترنت پرسرعت از سرویسی که شما خریداری نموده اید پهنای باند بیشتری را ارائه می کنند شما متوجه این ۲۰ درصد اتلاف نمی شوید.

برای مثال چون اینترنتی که خود مخابرات به صورت مستقیم ارائه می دهد دقیقا Kbps128 است سرعت دانلود حدودا ۱۲٫۸ KBps می باشد.

منبع:khandoon.ir

فکر کنم خوب است این صفحات را هم مطالعه کنید

63 پاسخ به “مفاهیم سرعت در شبکه”

  1. Writing doctoral dissertation is a prerequisite before a PhD degree conferred to you. It usually entails conducting some form of research. Dissertation writing is therefore not among the simplest form of writing you will come across. Dissertation writing process will normally begin by selecting of a topic or a concept. The topic should be on a relevant field and that which would lead to development of new knowledge in the field. While selecting a topic for dissertation writing, ensures that your topic is simple, realistic and attainable. After you have decided on a topic, you need to embark on writing a dissertation proposal. A dissertation proposal is a detailed work plan that provides specific details on how your dissertation project will be conducted. The proposal should contain; an introduction of the topic, the problem statement of your dissertation, objectives, research questions and hypothesis of your study and research methods you plan on using. A proposal in dissertation writing should also contain a literature review. A literature review is a detailed analysis of what other authors have said about your topic of study. The dissertation proposal should also include a work schedule and a budget plan for your dissertation project. After writing your proposal the next step is the collection and analysis of data. There are many approaches for collecting and analyzing data and the choice of these will dependent on the study. Then next is the actual dissertation writing. Dissertation papers should contain all those details included in the proposals. It should also encompass chapters that present the results and finding of the study. Dissertation writing should follow specific structure and style of formatting. This again will vary depending on your study type, institution or field of study. This process of dissertation writing consumes a lot of time and requires a lot of expertise and experience. These sometimes present a challenge to many students when it comes to dissertation writing. We are now providing dissertation writing services. We are offering dissertation papers for a variety of academic fields including; history, sciences, business, psychology and literature among many others. We have highly experienced writers who are also experts in dissertation writing. These dissertation writers are all PhD graduates who have years of practice in writing and have never disappointed when it comes to writing dissertation papers. Our writers will ensure that all the standards for your dissertation writing are adhered to. Though some standard requirement will vary from one dissertation papers to the other, there are some dissertation writing standard requirements that apply to all dissertation papers. One of them is the use of correct language, sentences, spelling and punctuations. Errors committed in such areas my completely alter what you intended to communicate in your dissertations. Another requirement is that your dissertation papers should be original and plagiarism free. To ensure that our papers remain 100 percent original and non-plagiarized we have instructed our writers to always start the writing process from scratch. We also scan all our papers using plagiarism checking software before we hand them over to our client. When you purchase our dissertation writing services, you receive papers that are guaranteed to satisfy your individual needs. This is because all our dissertation papers are custom written which ensures that we are able to adhere to our customers’ concerns and focus in meeting their expectations. Our dissertation writing services are also available at affordable prices.

  2. Writing a medical thesis or dissertation is a task done by almost all postgraduate and master’s medical students. Dissertation is derived from the Latin word disserto which means discuss. It is essential to write successful medical papers such as medicine essays and medical thesis papers. There are several reasons as to why students write medicine essays. One of the reasons is to promote enhancement of critical judgment, research skills as well as analytical skills. Moreover, medicine essay writing produce students with the ability to 4evaluate and analyze data critically.

    The initial step for writing medicine essays is to choose a topic. A writer should have at least three topics to choose from. The topic has to be interesting, feasible and relevant. It is essential to write quality medicine essay. Hence, students need to have analytical skills and perfect writing skills. The writing skills will enable them write outstanding essay papers that can be highly regarded by instructors and professors. Teachers often require a lot and expect a lot from their students in terms of medicine essay writing. for this reason, students find essay writing to be an extremely difficult task and hence resort to buying custom medicine essays.

    A custom medicine essay has to be written by professional writers who are qualified in the field of nursing. Moreover, the custom medicine essay has to be original and plagiarism free. This means that it has to be written from scratch by experts with many years experience. The many years experience should enable a writer to write any form of medical paper including medical thesis, medicine essay and even medicine research paper. Moreover, experience will enable a writer to write a medicine essay that can guarantee academic success.

    Students get custom medicine essays from custom writing company. It is essential to choose the best company so that one can get the best custom medicine essay. The best and the most reliable medicine essay writing company should have some unique characteristics such as affordability and the ability to provide original and superior quality medicine essays. The other quality is that the company has to hire expert writers who can write quality medicine essays and other types of medical papers. The essays should not only be quality but also plagiarism free and free of grammatical and spelling mistakes.

    A custom medicine essay has a similar structure to any other academic essay assignment. It has an introduction that introduces the topic and tells the reader what the essay is all about. The second section is the body that has many paragraphs supporting the main topic. Finally there is the conclusion that briefly summarizes what has been discussed in the body section of the essay. Students should choose reliable writing companies so that they can get quality custom papers on several fields such as technology, sociology and law in addition to medicine field.

    Our custom writing company is the best company that all clients should rely on when in need of any given type of medicine paper. We provide quality papers that not only plagiarism free but also original. Moreover, our custom papers are affordable and able to guarantee academic excellence at all times. All our medical papers are reliable and sure of satisfying clients at all times.

     

  3. A Biological Masterpiece, But Subject to Many Ills
    The human foot is a biological masterpiece. Its strong, flexible, and functional design enables it to do its job well and without complaint—if you take care of it and don’t take it for granted.
    healthThe foot can be compared to a finely tuned race car, or a space shuttle, vehicles whose function dictates their design and structure. And like them, the human foot is complex, containing within its relatively small size 26 bones (the two feet contain a quarter of all the bones in the body), 33 joints, and a network of more than 100 tendons, muscles, and ligaments, to say nothing of blood vessels and nerves.
    https://www.cialissansordonnancefr24.com/cialis-prix-pharmacie-quebec/

  4. Greetings I am so glad I found your blog, I really found you by error, while I was
    researching on Askjeeve for something else, Anyways
    I am here now and would just like to say kudos for a tremendous
    post and a all round entertaining blog (I also love the theme/design), I don’t have
    time to read it all at the moment but I have book-marked it
    and also included your RSS feeds, so when I have time I
    will be back to read more, Please do keep up the great work.

  5. And, although it suffered a pointy decline over the following
    12 months, the AR and position-playing games (RPG) genre subsequently regained a few of its user
    numbers, and claimed about 14 million monthly customers in July
    2017, which puts it on par with the perennially-widespread Solitaire” genre.

  6. In my friend’s web blogs they already have provided me on the website rolls, but mine usually is located at the bottom on the listing and does not selection when I place as it does for some individuals. Is this a placing that I have to difference or is this a choice they may have considered? . kddgacbddafa

  7. I’m now not ѕure ᴡһere you’rе getting you information, howeᴠer go᧐d topic.
    Ӏ needs to spend some tіme learning more or figuring ᧐ut mⲟre.
    Thanks for fantastic іnformation I wɑs on the lookout foor thіs information foг mү mission.

  8. I needed to post you this little observation to help give thanks again for your stunning methods you’ve documented in this case. This is really particularly open-handed with people like you to allow freely all that many people might have distributed as an e book in making some profit for their own end, especially given that you might have done it in case you wanted. The basics also acted as the great way to be aware that other people have the same desire like my own to know more and more on the topic of this matter. I’m sure there are many more pleasurable opportunities in the future for many who examine your blog post.

  9. Ι’m truly enjoying the design ɑnd layout of youг blog.
    Ιt’s a ѵery easy օn tһe eyes whicһ maҝes
    it mսch more pleasant foг mme to comе here and visit morе often. Ɗid you hire outt a designer to create y᧐ur theme?
    Exceptional ѡork!

  10. This message is posted here using XRumer + XEvil 4.0

    XEvil 4.0 is a revolutionary application that can break any anti-botnet CAPTCHA’s.
    Captcha Bypass Google (ReCaptcha-1, ReCaptcha-2), Facebook, BING, Hotmail, Yahoo,
    Yandex, VKontakte, Captcha Com – and over 8.4 million other types!

    You read this – it means it works! 😉
    Details on the official website of XEvil.Net, there is a free demo version.

    Check YouTube video “XEvil ReCaptcha2”

  11. Good post. I study one thing more difficult on completely different blogs everyday. It will at all times be stimulating to read content from other writers and observe a little something from their store. I抎 choose to use some with the content material on my blog whether or not you don抰 mind. Natually I抣l give you a hyperlink on your internet blog. Thanks for sharing.

  12. Thanks a lot for giving everyone remarkably marvellous opportunity to discover important secrets from this site. It is always so beneficial and also stuffed with amusement for me personally and my office mates to visit your web site minimum 3 times in a week to read the new guidance you have. And definitely, I’m so at all times amazed considering the powerful points served by you. Certain 2 tips on this page are really the very best we have ever had.

  13. I抦 impressed, I have to say. Really rarely do I encounter a weblog that抯 each educative and entertaining, and let me let you know, you’ve got hit the nail on the head. Your concept is excellent; the difficulty is one thing that not sufficient persons are talking intelligently about. I am very joyful that I stumbled across this in my seek for one thing relating to this.

  14. Aw, this was a really nice post. In thought I want to put in writing like this moreover ?taking time and precise effort to make an excellent article?however what can I say?I procrastinate alot and in no way appear to get something done.

  15. An impressive share, I just given this onto a colleague who was doing a little bit analysis on this. And he in actual fact purchased me breakfast as a result of I discovered it for him.. smile. So let me reword that: Thnx for the deal with! But yeah Thnkx for spending the time to debate this, I really feel strongly about it and love studying extra on this topic. If doable, as you turn into expertise, would you mind updating your blog with extra particulars? It’s extremely helpful for me. Big thumb up for this blog publish!

  16. Thank you so much for giving everyone such a spectacular possiblity to discover important secrets from here. It’s usually so brilliant and packed with a good time for me and my office peers to search your web site at minimum 3 times per week to study the fresh things you have. Not to mention, I’m at all times contented considering the awesome secrets served by you. Certain two points on this page are unequivocally the most effective I’ve ever had.

  17. The following time I read a weblog, I hope that it doesnt disappoint me as a lot as this one. I mean, I do know it was my option to read, however I truly thought youd have something fascinating to say. All I hear is a bunch of whining about something that you could fix for those who werent too busy searching for attention.

  18. My husband and i got really thankful that Albert managed to do his investigations via the ideas he came across using your web page. It’s not at all simplistic to simply always be handing out tactics which usually the others could have been trying to sell. So we already know we have the website owner to appreciate for that. Most of the illustrations you’ve made, the easy website navigation, the relationships your site help foster – it’s most impressive, and it’s helping our son and the family feel that the idea is satisfying, and that’s very vital. Thank you for the whole thing!

  19. Needed to compose you a very little word in order to thank you yet again for those awesome thoughts you have provided in this article. This is quite tremendously generous with people like you in giving openly precisely what many people could possibly have supplied as an electronic book to help with making some cash for themselves, notably seeing that you might have tried it in case you wanted. The suggestions additionally acted to provide a good way to be certain that someone else have similar desire just as my personal own to find out more on the topic of this matter. I believe there are some more pleasurable occasions in the future for individuals who check out your blog post.

  20. An impressive share, I simply given this onto a colleague who was doing somewhat evaluation on this. And he in truth purchased me breakfast as a result of I discovered it for him.. smile. So let me reword that: Thnx for the deal with! However yeah Thnkx for spending the time to debate this, I really feel strongly about it and love reading more on this topic. If potential, as you turn out to be expertise, would you thoughts updating your blog with extra particulars? It’s highly useful for me. Massive thumb up for this blog post!

  21. I must show some appreciation to this writer for rescuing me from such a trouble. After surfing around throughout the the web and meeting tricks which were not productive, I thought my life was over. Existing without the presence of strategies to the issues you’ve solved through your entire blog post is a crucial case, and the ones which could have in a negative way affected my career if I hadn’t encountered the blog. Your primary understanding and kindness in handling every part was crucial. I don’t know what I would’ve done if I had not come across such a thing like this. I can at this moment relish my future. Thanks a lot very much for your skilled and result oriented guide. I will not think twice to endorse the website to any individual who would need guidance on this issue.

  22. This message is posted here using XRumer + XEvil 4.0

    XEvil 4.0 is a revolutionary application that can solve any anti-bot CAPTCHA’s.
    Captcha Solution Google (ReCaptcha-1, ReCaptcha-2), Facebook, BING, Hotmail, Yahoo,
    Yandex, VKontakte, Captcha Com – and over 8400 other types!

    You read this – it means it works! 😉
    Details on the official website of XEvil, there is a free demo version.

    Check YouTube video “XEvil ReCaptcha2”

  23. There are definitely loads of details like that to take into consideration. That may be a nice level to convey up. I supply the ideas above as normal inspiration but clearly there are questions like the one you carry up the place the most important thing might be working in honest good faith. I don?t know if best practices have emerged round things like that, however I’m certain that your job is clearly recognized as a fair game. Each girls and boys really feel the affect of only a moment抯 pleasure, for the remainder of their lives.

  24. I in addition to my pals were reviewing the excellent helpful hints on your site and so then I had a terrible feeling I had not thanked the website owner for them. These people had been absolutely glad to read through them and have very much been loving them. We appreciate you truly being quite helpful and then for going for this sort of impressive resources millions of individuals are really needing to learn about. My honest regret for not expressing appreciation to earlier.

  25. Nice post. I study something tougher on totally different blogs everyday. It would all the time be stimulating to learn content material from different writers and apply a bit something from their store. I抎 desire to make use of some with the content material on my blog whether you don抰 mind. Natually I抣l provide you with a link on your web blog. Thanks for sharing.

پاسخ دهید

نشانی ایمیل شما منتشر نخواهد شد.