What is DNS Services and why does it use so much data?

I have 300MB to use a month on my iPhone 4S (most recent iOS) and I'm normally pretty good with it because I'm connected to WiFi a lot. All of a sudden, my data usage spikes and my DNS services usage has gone up to 40MB. What is this and how do I keep it from spiking like this? It's incredibly annoying.
Also, any other tips on saving data while connected with the 3G? As mentioned before, I only have 300MB so I like to stretch it for the month.

DNS (Domain Name Service) is the Internet "address book" of web sites. Whenever you go to a site such as http://apple.com your browser must make calls to the DNS server specified in your Network Settings to translate "apple.com" into Apple's IP (Internet Protocol) address of 17.178.96.59. Any time you access any Internet resource (such as sending or receiving email, playing multi-player games, using a browser, Using any app that accesses data on the Internet such as news, weather, stocks, etc) one or more DNS lookups must be made. Many web sites have content from several different sites. Each site referenced on the page must also be looked up. Each query is small (~100 bytes), but they can add up.

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Had this happen myself.
It does have something to do with Spotlight/searching. Should go away after a while, or so I have heard from other users, 'cause it hasn't stopped driving me and my fan mad yet.
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DNS (Domain Name Service) is the Internet "address book" of web sites. Whenever you go to a site such as http://apple.com your browser must make calls to the DNS server specified in your Network Settings to translate "apple.com" into Apple's IP (Internet Protocol) address of 17.178.96.59. Any time you access any Internet resource (such as sending or receiving email, playing multi-player games, using a browser, Using any app that accesses data on the Internet such as news, weather, stocks, etc) one or more DNS lookups must be made. Many web sites have content from several different sites. Each site referenced on the page must also be looked up. Each query is small (~100 bytes), but they can add up.

Nsurlsessiond - what is this and why does it use alot of data?

Hello
Firstly
I was in a public library, uploading to my dropbox account, and all of sudden my network speed indicator/ montior showed heaps of download and fast too.
but i was not downloading anything.
I was upping to my dropbox account.
In activity monitor i noticed this service was operating "nsurlsessiond"
What is this service?
In my connection alert it tells me nsurlsessiond tried to establish a connection to apple-dnld.vo.llnwd.net on TCP port 80 (http)
Secondly, i was using my own wifi, and saw this nsurlsessiond service consuming heaps of data. Again I was upping to my dropbox account. About 1gb this time.
Now I have blocked communciation to "nsurlsessiond"
What is the impact of blocking such communication?
please see details of service in screenshot
Now after this experience, I am wondering is it apple policy to have communication from our macbook's to somwhere without us knowingly allowing it? I thought apple was respective of our privacy, or has this changed?
thankyou for your help and time.
regards
10.10.2
dropbox v3.4.4
macbook pro
Message was edited by: seaseasea added screenshot
Message was edited by: seaseasea
added device and osx

i couldnt say. it was just that i happen to be only upping, to dropbox, and then saw downloading on the monitor.
that was triggered as odd.
i rarely look at what services are going on... only if my macbook slows down or something else odd.
in both cases i was only upping to dropbox.
i dont do alot with my macbook, other than upping to dropbox laterly.
thankyou for your thinking and help.

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DNS (Domain Name Service) is the Internet "address book" of web sites. Whenever you go to a site such as http://apple.com your browser must make calls to the DNS server specified in your Network Settings to translate "apple.com" into Apple's IP (Internet Protocol) address of 17.178.96.59. Any time you access any Internet resource (such as sending or receiving email, playing multi-player games, using a browser, Using any app that accesses data on the Internet such as news, weather, stocks, etc) one or more DNS lookups must be made. Many web sites have content from several different sites. Each site referenced on the page must also be looked up. Each query is small (~100 bytes), but they can add up.

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Hi,
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http://mackeeper.zeobit.com/
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IMHO you do not need this utility. Your Mac will do maintenance for you.
Carolyn :-)

What is application memory and why does my macbook pro keep running out of it?

what is application memory and why does my macbook pro keep running out of it?

There is excessive swapping of data between physical memory (that is, the memory chips on the logic board) and virtual memory (one or more files on the startup volume.) That activity is relatively slow and causes the whole system to be less responsive. It can happen for two reasons:
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The processes named "Safari Web Content" render web pages for Safari. They use a lot of memory and may leak if certain Safari extensions or third-party web plugins are installed. Consider them prime suspects.
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If you don't have an obvious memory leak, your options are to install more memory (if possible) or to run fewer programs simultaneously.
The next suggestion is only for users familiar with the shell. For a more precise, but potentially misleading, test, run the following command:
sudo leaks -nocontext -nostacks process | grep total
where process is the name of a process you suspect of leaking memory. Almost every process will leak some memory; the question is how much, and especially how much the leak increases with time. I can’t be more specific. See the leaks(1) man page and the Apple developer documentation for details.

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Make sure you’re logged into your Google account – say, through Gmail – and then go to google.com/locationhistory. You’ll see a map showing location visits for today, but click the Dashboard link at the top of the page and you’ll see this:
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Follow the above steps to turn off Location Services :

".alias" file in LV 8.2 DSC - What is in there and why does it change?

Why does the alias file get updated every time I open and close the associated project WITHOUT SAVING ANYTHING ?
Repeat:
I did not save anything.
What is being saved if I did not change anything?
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Hi all,
I can give you some reasoning behind the 'why.' The aliases file
lets the project know the location (IP) of each of the targets in the
project to facilitate communication between them. This is very
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independent targets. If you create a new RT cRIO Controller in
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[My Computer]
My Computer = "10.0.31.147"
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and receive FTP files, set up front-panel communication with the
target, and properly configure shared variables. This behavior
should be present in all flavors of LabVIEW 8.2, and not just with the
DSC Module.
Message Edited by MattP on 11-21-2006 12:34 PM
Cheers,
Matt Pollock
National Instruments

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Just curious what this 34544.rar thing is and why it expands, but doesnt' open.
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It looks complicated. When I clicked on it, it made 2 new files there in my folder. dddd.1.exe, followed by ddd.exe-
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Thanks for your time as well.
-an

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Why reward points?(Quoted from Discussions Terms of Use.)
The reward system helps to increase community participation. When a community member gives you (or another member) a reward for providing helpful advice or a solution to their question, your accumulated points will increase your status level within the community.
Members may reward you with 5 points if they deem that your reply is helpful and 10 points if you post a solution to their issue. Likewise, when you mark a reply as Helpful or Solved in your own created topic, you will be awarding the respondent with the same point values.

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Has anyone else had this appear?
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What is DNS Services and why does it use so much data?

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