title: What kind of errors does CRC method cannot detect?
body: <p>Lets assume a 16 bit CRC polynomial x¹⁶+x¹²+x⁵+1 = 0x11021. That polynomial can:</p>
  
  <ol>
  <li>detect all single bit errors (data size independent).</li>
  <li>detect all burst errors up to 16 bit width (data size independent).</li>
  <li>detect all odd numbers of bit errors (since it has 4 polynomial terms; data 
   size independent).</li>
  <li>detect 3 bit errors (HD4) up to 32571 bit data size.</li>
  </ol>
  
  <p>Considering the above points are right......
  What kind of errors does CRC cannot detect.?</p>