nsurlsessionid taking up bandwidth upon boot

After booting into OS X yosemite and logging in, the nsurlsessionid process starts downloading something. The process starts downloading at the max speed my internet will allow which is 6.25 MB/s, so the download finishes quite fast and the network usage eventually goes back down to 0. My concern is that I don't have a unlimited internet usage plan and it seems to start downloading everytime I boot up the computer. After Doing some research it seems the process is downloading something from apple's servers. I have iCloud, but nothing seems to be changing, is there is way to prevent the process from downloading data.

The nsurlsessionid process downloads content on behalf of other apps. Another one of your programs is designed to download content in the background (even if not actually running), and is doing so. Most common culprits are iCloud Drive & the new Photos app.

A little shell script to stop the nsurlsessiond process (until the next reboot) was posted at the Apple Support Communities.

!/bin/sh

launchctl unload /System/Library/LaunchDaemons/com.apple.nsurlstoraged.plist
launchctl unload /System/Library/LaunchAgents/com.apple.nsurlsessiond.plist
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.nsurlsessiond.plist
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.nsurlstoraged.plist

You can just post the four lines above in your terminal program.

Please note that these commands will quit the nsurlsessionid process for only the current session, and is thus, at best, a temporary workaround.

I have same issue.Net usage is high after boot.Firewall showing it use cdn like akamai.net. My os is sierra.Help me please