How does one calculate the below two-year par yield given the zero rate curve: Assume the following two-year zero rate curve, with continuous compounding: 2.0% @ 0.5 years, 2.5% @ 1.0 year, 3.0% at 1.5 years, and 3.5% at 2.0 years. What is the two year PAR YIELD?

I know we can use the zero rate curve to derive a theoretical price of the bond but don't know how that can be used for calculating the par yield.

How does one calculate the below two-year par yield given the zero rate curve: Assume the following two-year zero rate curve, with continuous compounding:

2.0% @ 0.5 year
2.5% @ 1.0 year
3.0% @ 1.5 years
3.5% @ 2.0 years

What is the two year par yield?

I know we can use the zero rate curve to derive a theoretical price of the bond but don't know how that can be used for calculating the par yield.