1. What are the types of coverages available in SV

Using covergroup : variables, expression, and their cross
Using cover keyword : properties

class eth_frame;

   // Definitions as above
   covergroup cov;
      coverpoint dest {
          bins bcast[1] = {48'hFFFFFFFFFFFF};
          bins ucast[1] = default;
      }
      coverpoint type {
          bins length[16] = { [0:1535] };
          bins typed[16] = { [1536:32767] };
          bins other[1] = default;
      }
      psize: coverpoint payload.size {
          bins size[] = { 46, [47:63], 64, [65:511], [512:1023], [1024:1499], 1500 };
      }

      sz_x_t: cross type, psize;
   endgroup
endclass

module Amod2(input bit clk);
    bit X, Y;
    sequence s1;
      @(posedge clk) X ##1 Y;
    endsequence
    CovLavel: cover property (s1);
    ...
  endmodule

Q. What are different Types of coverage

- Code Coverage

Which tool does 

- Functional Coverage

Which we write

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