db.serverStatus().connections

I’m going through the tools and running them on a Replica Set with three nodes I have running on a three node kubernetes cluster.

In the lecture there are five current connections whereas on my Replica Set there are 34. Is there any way to identify why there is such a big difference? Also how are the number of current connections related to the maintenance of the Replica Set as in how many are normally required?

{
  current: 34,
  available: 52394,
  totalCreated: 152761,
  active: 8,
  threaded: 34,
  exhaustIsMaster: 3,
  exhaustHello: 3,
  awaitingTopologyChanges: 44
}