Tech Ops IS
the right forum for this question.
The two smaller black ones are the Satcom antennas. The larger "dome" is the Connexion by Boeing satellite used a couple of years ago for onboard bradband internet via wifi.
Some other airlines that offered it:
So you will see various other 744/343/346/772 etc. with the "dome"
Currently not used/active on any of them as Boeing sold the satellite to the Army.