November 26, 2010
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FSMO is the abbreviation of the single the master operation of The Flexible means flexible single The host operating. Operation of the host (Operation Masters, also known as Flexible Single Master Operation FSMO) is the domain controller is set to serve as a specific role information in an active directory domain, at least there will be three operating host role . For large networks, the entire domain forest, there are five kinds of important FSMO role and these roles are unique. 1, the level of the forest (a forest exists only one DC this role):
(1), Schema Master (also known as the Schema the Owner): Schema Master
( 2), Domain Naming, the Master: the domain naming master
2, the domain level (a field which only keep a DC role):
(1), the PDC emulator: PDC emulator
(2), RID Master: the RID master
(3) Infrastructure the Master: Infrastructure Master
query FSMO host in the command line, I generally use the netdom query fsmo command query should be noted that this command will need to install the windows of the Support Tools. five roles space 1, the Schema Master
role is to modify the source data of the Active Directory. We know that in the active directory there are a variety of images, such as users, computers, printers, etc., as a series of attributes, Active Directory is a database of objects and attributes like form, like the existence of correspondence between the relationship between the image and attributes defined by whom, is the Schema Master, if we deployed Exchange, then, you know the Schema can be extended, but requires attention is the expansion of the Schema must be extended in the Schema Master, the implementation of the extension in the other domain controller or member server is actually a network data transfer to the Schema and then extend the Schema Master, you want to extend the Schema must have Schema Admins group permissions can. />
2, the Domain Naming, Master
This is also a forest-level role, its main role is the management of forests, domains added or removed. If you want your existing forest, a domain, or to delete a domain, then, then on must be to be the Domain Naming Master carry out contact if Domain Naming Master in Down machine state , then, you add and delete operations that definitely will fail the.
recommends that: the same possession of the Domain Naming Master domain controller does not require high-performance, I do not think a network administrator in the forest will always add or delete a domain? high availability is necessary Otherwise, there is no way to add and delete domain in the forest.
PDC Emulator in the front has been mentioned before, the Windows 2000 domain, no longer distinguish between PDC or BDC, but in fact, some operations must be registered by the PDC to completed, then these operations in the Windows 2000 domain inside how do? it done by the PDC Emulator, mainly the following operations:
(1), to deal with password authentication requirements;
By default, the Windows 2000 domain all DC every five minutes copy once, but some cases are the exception, such as password changes, under normal circumstances, once the password is modified, it will first be copied to the PDC Emulator, and then trigger an immediate update to ensure that real-time nature of the password from the PDC Emulator, of course, in fact, because of network replication is also a need of time, so there will be a certain time lag, As for this time difference is how much depends on your network size and line situation.
(2), unified within the time;
Microsoft Active Directory Kerberos protocol to authenticate, by default, verification and verifier not more than five minutes, otherwise it will be rejected by the Microsoft of this design is mainly used to prevent playback attacks. Therefore, time must be in the domain is uniform, the unified time work is done by the PDC Emulator.
(3) NT4 to the domain the BDC to copy the data source;
for the new network, the Windows 2000 domain that contains NT4 BDC phenomenon of the General Assembly, but for upgrade from NT4 from a Windows 2000 domain is very possible existence of this situation, this case would like an NT4 the BDC replication, you need the PDC Emulator,.
(4), unified modify the group policy template;
(5), the pre-Windows 2000 operating system, such as WIN98 like computer support;
For the pre-Windows 2000 operating system, they will think they added the NT4 domain, so when these machines joined to a Windows 2000 domain, they will try to contact the PDC, in fact the PDC does not exist, so the PDC Emulator will become the object of their contact!
recommendations: from the above description, we should look out, the PDC Emulator, is the most important task in the the FSMO five kinds of roles, so the occupation of the PDC Emulator domain controller To ensure high performance and high availability.
4, the RID Master
in the Windows 2000 security subsystem, the user identity does not depend on user name, although we have some permission settings is the user name , but in fact depends on the security principal SID, when the two the user SID, even though their user names may be different, but the Windows security subsystem will be considered to be the same user, this will lead security issues. Safety of users within the domain, the SID = the Domain SID the RID, how to avoid this situation? This requires to use the RID Master, the RID Master role is: to allocate the available RID pool to the repeat domain, DC and to prevent the security principal SID.
Recommendation: For the possession of the RID Master domain controller, I did not necessarily require high performance, because we rarely frequent use of a batch or script to add a large number of users to the Active Directory. This depending on the actual case may be, of course, high availability is essential, otherwise this is probably the most insignificant in five roles, Infrastructure Master
the FSMO role. Its main role is to be used to update the list of members of the group in the Active Directory is likely some users to transfer from one OU to another OU, then the user DN changes, when the other domain for users reference must also change. This change is done by the Infrastructure the Master.
Recommendation: In fact, the Active Directory forest is only one domain or the forest, all domain controllers are GC (global catalog), Infrastructure Master does not work, so under normal circumstances possession of the Infrastructure the Master of the domain controller to ignore the performance and availability. FSMO planning, according to the following principles:
1), possession of the Domain Naming, Master role domain controller now must also be the GC;
2), can not Infrastructure the Master and GC on the same DC;
3), it is recommended that the Schema Master and Domain Naming Master on the forest root domain GC servers;
), it is recommended that the Schema Master and Domain Naming Master on the same domain controller;
5), it is recommended that the PDC Emulator, and the RID Master and Infrastructure Master on the same performance domain device;
6), as far as possible not to the PDC Emulator, and the RID Master and Infrastructure Master placed on GC servers;
February 11, 2011
the night sky particularly silent, but Jinji Fan of the home, even if it is sitting on the windowsill, he did not in the mood to enjoy the night.
Dongdaoxiwai the bottle, cigarette butts scattered in one place, the hands of mobile phone vibration, lights in the dark with a white, Jinji Fan look at the hands of the telephone, Sungmin:
“Hello?”
“Hey? Kibum you, Han Geng brother …
” pop “hung up the phone, do not, he is now a little also do not want to hear the word.
suddenly the door opened, Kim Hee Chul frown came saw the windowsill emaciated the Jinji Fan, sighed, and pulled him up:
“Hey! do, do not live is not it? There are notice tomorrow? so how you go out? “
Jinji Fan like to be excited a bit, pushed and shoved him:” of what notice? the super junior fuck are quickly over, I also control what notice? “
Heechul anxious, grabbed him by the collar:” you e not from the outset should clear that he would not tell us until you come to the last is not it, what makes you qualified what reason is there to keep him in this? “
” But obviously said yes? Why must we be now? why he non- to choose now? strong Renge things soon solved, we are ready to re-starting, why did he betray us? “
” pop! “Heechul a slap hit the base Fan face, the eyes can not believe the look back in anger, roared: “Do not let me hear you say the word! Kyuhyun so, you too! Have you ever thought about him ? he is not tired, is not what happened, you said that he had betrayed, do you not selfish? “
Jinji Fan staggered a step back, silent kneeling on the ground. The tears continue to fall down, Kim Heechul looked at him, knelt down, put him in his arms.
“Brother, I just do not want to let him go, the fans know how to say him? he will be sad if some people criticize him how to do? brother is so gentle, we are can not do, after I no longer invisible brother how to do … “
night, along with Kibum cry of pain, along with the sad atmosphere, a little bit of the past …
Three days later, South Korea, China, Japan issued the same message, the super for junior members Han Geng, termination …
hospital corridors, nurses have promoted the bed went to the operating room Sun Yue Han looked at the bed, smiled and said: “Do not worry, only a small surgery, like sleep.”
Hankyung smiled and look at him, nodded, and closed on the eye.
Sun Yue looked at the operating room door closed, the red light above the door lit up, hand Han phone, shown above to see one day before the Han into:
“G, come on Oh, do not forget there I am!” message from -.
Korea
Littleton, turn off the coverage of TV of the HG message darkness again enveloped the living room, nest in the corner of the sofa, Sungmin Eunhyuk shut himself in the room did not come out …
more fans in the spate of online hair news, there is doubt, support, have questions, there are so many, so many …
tonight, is bound to be a sleepless night …
No one knows, no one understood, no one can understand, even the fate, sometimes in the aftermath, people can really understand it brings joy sadness.
“Hey, get off it, to” the sound of Sun Yue Han Geng from the memories of the pull back, open the door, because the relationship between the New Year, and the streets so lively, precisely because of this, no one from this car down the Han.
look up at the night sky, the lights of the city to cover up the night sky, perhaps like the present society, countless people with the mask of life, people do not see beneath the mask of my heart, in the end become What is it?
“what get inside.” Sun Yue pushed him, Han Geng bowed his head, walked to the door.
just want to reach out to open the door, and sudden stomach came tingling, Han Geng breath, to recover the hand over his stomach, cold sweat flows out.
“how?” Sun Yue hold on to him.
do not know … “Han voice began to tremble.
not already taking medication? not told me to go to the hospital. “Sun Yue anxious, holding him and turned around and walked to the car.
Han did not speak, pale nod …
Korea
hung up the phone the gold looked at the phone screen in a daze, Park day shot from behind him: “brother? want what?”
“Nothing, how to stay up?” in Huiguo Shen, watching the look of utter exhaustion Park days, these days they To singles publicity tired No, compared to physical exhaustion, heart on the sad beyond words.
“I is not sleepy, you just call it to Geng brother?”
“grace.”
“Brother, you worried about? “days looked calm in the face, and suddenly asked.
in stunned for a moment, then smiles: so easy to find? “
…
I not know how to always have a bad feeling, perhaps this time too busy, in addition to the notice also care less than anything else. “
you say you , or Han Geng brother? “Sky whispered.
gold in did not speak, but got up and went to the ledge and looked up at the Seoul can not be considered the bright night sky, a light, said: “have it …”
Chinese hospital
“Doctor, you mean …… disease progression? how will?? deterioration What does it mean? in the end seriously to what extent? there is no chance of a cure? “Sun Yue can not believe they are hearing, why is it serious?
“I sorry this happened and we are very sorry, and his body is inherently weak, especially in his stomach cancer before there are serious stomach injury with surgical Although the cancer has been to get control, but introduces complications, the gastric function to failure, forced medication, the patient body will only bring harm, I hope you can talk and patients, after all, he is the artist If this continues, his body will slowly weakness continues, if you want to improve the treatment, they must be hospitalized, this is the case … “
cured!” No other doctor said End, Sun Yue, anxious asked: “problem, if we are hospitalized, be sure you can be cured you?”
doctor did not speak, Sun Yue eyes flashed panic: Is it even the hospital you are not sure? “
” so to speak, even the hospital, we can only strive to treatment, but once in treatment, originally under control of the cancer cells spread. Well …… I sorry, we do not have to grasp the chance of a cure only 30%.
…… “
Sun Yue atheism through the corridor and station unchanging, in the ward before, he told Han? He tell the truth? He should do … did not go into, Sun Yue is not far from the bathroom turned into tears fall silently, regardless of the surprised eyes of the people around, to suppress the voice crying, do not abandon it so? Han Geng, you tell me how can I help you …
control the facial emotions, Sun Yue once again standing before the Han ward, just to open the door inside of the door never opened, Han Geng surprised looked at him: “how to get to for so long, I want to find you.”
“… nothing, you kick down the bottle came out?”
< br /> “as early as was over, we should not look for you you.” Han back to the ward, sat on the bed. Sun Yue silence into sitting in a chair.
“Hey, how you, too tired.” Han Geng think that he was wrong, asked.
Sun Yue looked up at him, made up such a determination, as the opening: “Han, we went to South Korea, looking for gold.”
SINGLE September 12, 2011, the new brother condemned to loneliness.
toad, a Rhapsody.
feel like unassailable ah, even the best in the world, is because the world, he or she will be lonely. Fantasy, if uncontested top dog of my life in an era, that the, what kind of happiness?
In fact, masterpiece lost dog with scrap wood brother if in an era, as will be happy.
Feng Yi Sigui lack of food.
If so, I also know that counseling is very boring egg, but I just like people, not as wretched pig pester people to direct. Sucker feelings will be cheap, then said to myself one: “In fact, ji is my father, my kind of grief has been unfortunate, anger has been an indisputable genetic
then when I know that that is what it feels like, and I especially sympathize with Zhou You Wang, and his play war lords, even though also romantic mischief. If my words, I will probably do. People do not understand very helpless feeling. But also a bit unwise seems. After all, the Empress and the Warriors Well, there is no country where the harem inmates, wives garden? But I have no country ah? I can do the most drastic ah.
has been, I feel the role of a passerby. Even God overlooking the world, but also will not notice me ah. Although the world is particularly clear in his eyes, then God will stare at every passerby? Oh, no, absolutely not.
is a metaphor, a dead child squatted next looked busy and out of the ant colony in the roots, holding a Shugun in the ant hole poke to poke go. But not really look into any of an ant. When you have mastered the power of an individual easily destroy the ashes, it will never notice it there. People, such as Lou and ants.
once stubborn dead child, has always been head down, no sound through the crowd, watching other people laugh too far away, he did not say anything. But you know there are a lot of the world. Dead of night, he would lie on the bed to see the night sky through the window and open the two large eyes, suddenly sad, but suddenly laughed stomach ache child in the bed roll, neurology ah?
not they say a walk with me very plunges, I can not believe na, but say ah, I can not believe it. “
classes the time in the soul travel days, always Saobao in thought, I l pull, stretch it.
how, what sorrow, how, what, a reminder.
how sad reminder ah? A crush on B, while B is happy and another person (c) together. Walk alone in the moonlight miss him when you filled dramas sad, seems to describe her writing is like your soul dancing in the paper, and leaning on his hand in with a moon, B took C arms, Lovers, and sweet. The crest of the sexual gratification of the hormone breath in the air.
this moment, the world Datong. He moment, the light bulb burst tomorrow, crazy.
you initially like a person, when you do not know her. You do not know when she pleased when unhappy. She is like an even envelopes are not you open the book. But you desperately want to open that book to read, read inside in the end what was written. Perhaps one day you do not together, you opened the book, in fact, like Journey to the West when I first get a piece of paper. You had ridiculous sleepless nights, and wait for them on the toilet with. Five or ten years but one or two years, you read that book, every line, you have seen, and even back down. You will be tired, she will cast a thick layer of dust on your shelves.
“brother, light bulbs Shenma do you mean?”
sandwiched between the couple issued a discordant bright people. “
” What kind of be considered is the beauty it? “
gorgeous sister of the slender legs, spotless little fairy, as well as face wrinkled yellow teeth old lady. “
This is a super-academic interpretation.
He said that people do not because of who Wasted.
He said that ten birds in the forest is not as good as a bird in hand.
he said, until the time of the class flower in full bloom, the brother in a pair of laughing.
he said. . . . . .
I said, purely to pull his mother egg fart ah.
listening, toad in the fate of playing a mad symphony.
May 14, 2011, the First
Linq and Single in the actual work will often see that it is easy to understand from the literal meaning of a first element of the take in the list, one is taken to the only element. If you would like to further understanding, you can read this article. The fact that there are four options: the conditions of return based on your sequence, if no element exists elements return to the default default (TSource).
First, the core idea is that if the sequence exist in more than one element, it returns the first one. This also means that when the discovery of the first element, this method is called on exit immediately will not go through to find the remaining elements.
look at the example, you define a class: give him a list of some initialization: free, an element, a number of elements, when we use the First, what The result? Also note that the exception will be thrown in the following circumstances: Finally, when we use the method with Default, the following will return a null value rather than throwing an exception: like the First, Single four forms: return the only element in the sequence, if there is no element exists exception is thrown an InvalidOperationException, if more than one exception is thrown an InvalidOperationException.
conditions based on your return the only element in the sequence If more than one, if there is no element exists an exception is thrown an InvalidOperationException exception is thrown an InvalidOperationException. SingleOrDefault ()
return the only element in the sequence, if there is no element to return the default element default (TSource), if more than one, an exception is thrown an InvalidOperationException.
conditions based on your return the only element in the sequence, if there is no element to return the default element default (TSource) If more than one, an exception is thrown an InvalidOperationException.
Please note, the key difference here: if there is more than one element, the family will always throw an InvalidOperationException. Also note that this means that, even if the Single method to get a matching element, it is still possible to scan the rest of the enumeration. This can make the Single less efficient.
The following example returns what? In the following example, we see the similarity Single and First, different is the First and Single has a meet the sequence of the results of more than one element to avoid when there is no element to meet the requirements and throws an exception choice, when you do not determine whether it existed at the time of the elements you want to obtain, can be used … OrDefault (), null can be a good “find”.
when you do not care whether there are duplicate items or can not have duplicate elements exist, you can use the First; when you want to verify whether there is a repeat element exists, of course on the choice of the Single.
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set up in April, I stood in April, the beginning of the Indexed in the station every day to check every day, Baidu Google, Yahoo Sogou search. Found in a collection of slow, then I heard some of the owners of the recommendations is constantly updated content, keywords in the search for my station, I like to Baidu News and Google News to find, but the inside of the Chinese-language news or Baidu to do a little better, Google is not very good, and then I went to Soso information, open the page and found the right “to your site submitted to the SOSO, SOSO news source was thought can put submit their own station, I did two days I CNZZ view my traffic statistics found in from SOSO get the traffic, then into www.soso.com to see my page, looking for The half-day turn more than a dozen pages did not find, I was bored. Then I go NEWS.SOSO.COM, I laughed, I stand with the 163. Tencent, and other major stations with to SOSO the sources of information stations, cow B! I then updated every day. Then yesterday on the 23rd night I found Baidu updated my 193, SOSO a collection of 49. I hope some of my experiences to share with you.
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August 12, 2010
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December 23, 2011
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