Plasticity (stress(strain)) interpolation in Abaqus

The stress-strain data for a plastic deformation is given in table. 

I have two questions related to how that table is treated:
- How is data interpolated? Is it piecewise linear or something else?
- What if the plastic strain is larger than the maximum plastic strain provided in the table? I presume the data is extrapolated? But how? Using the linear interpolation between the last two points or something smarter?

Thank you