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1.checksum: the sender counts the total number of one bits in the data block and add this number a binary integer to the end of the block. The receiver then counts the number of one bits in the block again and compare with the one they have received. if there is any difference, it will ask for a...

Use of batch for a) could be performed each day to locate overdue books by comparing today's date with the return date, and a mail merge done to match the name and address details with the appropriate overdue or fine notifications

just do past papers (successone) and use excel

a) batch b) real c) batch