mounting shared folder at boot

Hi All
Everytime a reboot my machine "hostB" I have to mount a shared (with machine "hostA" ) NFS folder giving this command

sudo mount hostA:/sharedFolder /sharedFolder

How to use fstab in order to do this automatically?

I should say

hostA:/sharedFolder    /sharedFolder          nfs          rw                     0 0

but I don't know whether last 2 values 0 0 are correct and I ddin't understand what they exactly mean and how they impact on the system.
Thanks
MNSTN