title: Calculating the Checksum in the receiver
body: <p>I'm reading the book <a href="http://www.docstoc.com/docs/57226587/Data-Communications-and-Networking-4th---Behrouz-Forouzan" rel="nofollow">Data Communications and Networking 4th Edition Behrouz-Forouzan</a>. I have a question in an exercise that asked me the following: The receiver of a message uses the checksum technique (Checksum) for 8-bit characters and get the following information </p>
  
  <blockquote>
    <p>100101000011010100101000</p>
  </blockquote>
  
  <p>. How I can know if the Data sent is correct or not? and why? </p>
  
  <p>I Learned how to calculate the checksum in hexadecimal values, but do not understand as determined by a binary output, if the information is correct.</p>