If you sought the help of the Minutemen (Sturges) in building the teleporter in the main quest “The Molecular Level”, he'll give you a Network Scanner holotape. As soon as you get in The Institute, load the holotape of the console right in front of you and scan the network. Eject the holotape and give it to Sturges.
In the other hand, if you're allied with the Brotherhood and you talked to Maxson, he'll know that you have the holotape and will give you the quest “Outside the Wire” which will require you to give the holotape to Procter Ingram instead. However, even if you hand it to her, you can still get the original back since Ingram will make a copy. Then you can give the original back to Sturges or Tinker Tom in the Railroad HQ should you decide to side with them instead.