Not 100% sure about the mkII, but my 40D and the 7D mk1 both come with USB cables for me to connect to the computer. With that USB connection, I can transfer files from camera to my computer and tether shoot with the Digital Photo Professional (software that comes with the camera) as well as Lightroom.
I think the 7DmkII should come with the USB cable as well for user to transfer image and tether shoot withe DPP.
Edit:
Just went to Canon USA site and it said the camera ships with
"USB Interface Cable IFC-150U II".
He's not asking about that.
That is correct, I am asking about connecting a tablet which has a different connection.
For tablet (Samsung Galaxy Note 10.1) for my 7D, I bought a adapter for my tablet which convert the charging /communication port into a regular USB port. From that, I can use the cable that shipped with my camera and have the camera connect to my tablet directly. And I bought an app called "DSLR controller" from Android app store which I can have my camera tether shoot with the tablet.
Not sure about your tablet, so I think you can check if a similar adapter also available for your tablet.