黑基网 首页 公开课 Win2008 查看内容


2017-9-4 16:32| 投稿: lofor| |来自: 互联网

摘要: DNS(Domain Name System,域名系统),因特网上作为域名和IP地址相互映射的一个分布式数据库,能够使用户更方便的访问互联网,而不用去记住能够被机器直接读取的IP数串。通过主机名,最终得到该主机名对应的IP地址 ...

DNSDomain Name System,域名系统),因特网上作为域名和IP地址相互映射的一个分布式数据库,能够使用户更方便的访问互联网,而不用去记住能够被机器直接读取的IP数串。通过主机名,最终得到该主机名对应的IP地址的过程叫做域名解析(或主机名解析)。DNS协议运行在UDP协议之上,使用端口号53。在RFC文档中RFC 2181DNS有规范说明,RFC 2136DNS的动态更新进行说明,RFC 2308DNS查询的反向缓存进行说明。

























引用 游客 2018-3-18 16:54
I used to be very pleased to search out this internet-site.I needed to thanks on your time for this wonderful read!! I positively enjoying each little bit of it and I have you bookmarked to check out new stuff you weblog post.
adidas ultra boost uncaged http://bit.ly/2sNI8PI
引用 游客 2018-3-18 06:44
My spouse and i were now joyful  Edward managed to deal with his studies out of the ideas he discovered out of your weblog. It's not at all simplistic just to choose to be releasing tips and tricks that many others have been ** money from. We really already know we've got the writer to be grateful to because of that. Most of the explanations you've made, the straightforward website navigation, the friendships you will help to create - it's got everything fabulous, and it is aiding our son an ...
引用 游客 2018-3-17 11:34
Your place is valueble for me. Thanks!?
adidas nmd http://tropaadet.dk/nmds
引用 游客 2018-3-16 08:27
After research a number of of the blog posts on your web site now, and I actually like your approach of blogging. I bookmarked it to my bookmark website checklist and shall be checking back soon. Pls try my website online as properly and let me know what you think.
nmd uk http://urlr.be/short/nmduk
引用 游客 2018-3-15 21:50
I simply had to say thanks again. I do not know what I could possibly have accomplished in the absence of those opinions shared by you directly on my question. Previously it was a very troublesome situation in my position, nevertheless taking a look at the very well-written way you managed that took me to jump with fulfillment. Now i'm happy for this support and thus hope you find out what a great job you are always carrying out instructing some other people through the use of your website. I am ...
引用 游客 2018-3-15 10:13
I wanted to post you that bit of note to finally thank you so much once again over the exceptional thoughts you've shared here. This is so wonderfully open-handed of you to convey openly what exactly a lot of people might have supplied for an e-book in ** some cash on their own, specifically considering the fact that you could have done it if you ever wanted. Those principles in addition served to become a great way to realize that many people have the same zeal like my personal own to find  ...
引用 游客 2018-3-15 01:44
you have got an awesome blog here! would you prefer to make some invite posts on my weblog?
adidas ultra boost https://vtu.cc/ultraus
引用 游客 2018-3-13 15:46
Your house is valueble for me. Thanks!?
adidas nmd http://ux.nu/qh9ca
引用 游客 2018-3-12 07:19
It抯 hard to find knowledgeable folks on this matter, however you sound like you know what you抮e speaking about! Thanks
yeezy boost 350 http://qrurl.it/r/1ikfy
引用 游客 2018-3-11 02:18
Would you be all in favour of exchanging hyperlinks?
yeezy boost http://lovebyt.es/boostyzy
引用 游客 2018-3-10 13:44 (待审核)
I simply wanted to make a  comment so as to appreciate you for all of the nice ways you are giving here. My prolonged internet look up has at the end of the day been rewarded with excellent knowledge to share with my neighbours. I 'd say that we website visitors actually are undoubtedly lucky to exist in a superb website with  many wonderful professionals with useful secrets. I feel pretty happy to have encountered your entire web site and look forward to many more pleasurable minutes reading he ...
引用 游客 2018-3-10 01:34
Can I just say what a relief to seek out somebody who actually knows what theyre speaking about on the internet. You positively know how one can bring an issue to mild and make it important. More people must learn this and understand this side of the story. I cant believe youre not more widespread since you positively have the gift.
[url=http://ix.sk/toXF8]yeezy boost 350 v2[/url]
引用 游客 2018-3-9 21:59
My husband and i have been so relieved when Michael could deal with his investigation through your ideas he received out of the web pages. It's not at all simplistic just to possibly be handing out helpful hints which some others have been ** money from. We fully grasp we've got the blog owner to give thanks to for this. The explanations you've made, the ** website menu, the friendships your site assist to foster - it is many overwhelming, and it's really aiding our son in addition to ou ...
引用 游客 2018-3-9 02:31
This site is mostly a stroll-by way of for all the info you wished about this and didn抰 know who to ask. Glimpse here, and also you抣l undoubtedly uncover it.
adidas yeezy http://chilp.it/3854624
引用 游客 2018-3-8 02:54
I discovered your weblog web site on google and verify a number of of your early posts. Continue to maintain up the superb operate. I simply extra up your RSS feed to my MSN Information Reader. Looking for ahead to studying extra from you later on!?
yeezy boost http://spam.to/yzyboost
引用 游客 2018-3-6 21:38
Can I simply say what a relief to seek out somebody who actually knows what theyre talking about on the internet. You definitely know the best way to deliver an issue to light and make it important. More people must read this and perceive this side of the story. I cant imagine youre no more well-liked because you positively have the gift.
<a href="http://onj.me/yeezyboost" >yeezy boost</a>
引用 游客 2018-3-6 01:21
An attention-grabbing discussion is value comment. I feel that it's best to write more on this subject, it may not be a taboo topic however generally persons are not sufficient to talk on such topics. To the next. Cheers
air jordan shoes http://www.jordanshoes.com.co
引用 游客 2018-3-5 08:27
I'm just writing to let you understand of the exceptional discovery my friend's princess found using your web site. She noticed plenty of things, which included what it's like to possess an excellent giving style to have many more effortlessly fully grasp some advanced topics. You truly did more than her desires. Many thanks for imparting those warm and helpful, trustworthy, educational and in addition easy tips on that topic to Kate.
adidas nmd r1 http://spam.to/nmdrunner
引用 游客 2018-3-4 17:09
Would you be all for exchanging hyperlinks?
cheap nhl jerseys http://www.nhljerseys.us.org
引用 游客 2018-3-4 06:26
My husband and i ended up being so excited when Peter could finish off his reports with the ideas he made from your own site. It's not at all simplistic just to choose to be releasing points  the rest have been ** money from. We acknowledge we've got the blog owner to thank for that. The specific illustrations you made, the straightforward website menu, the friendships your site make it easier to promote - it is everything great, and it is aiding our son in addition to us know that that subj ...