3. (b) A sender needs to send the four data items Ox1236, OXABCC, OX03BC, and OXEEEE. To avoid confusion, Ox is written in the prefix to denote that the data is in Hexadecimal. For example, Ox3456 is 3456 in hexadecimal. Now answer the following: i. Find the checksum at the sender site. ii. Find the checksum at the receiver site if there is no error.

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