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| A magnetic tape: |
A magnetic tape is a continuous medium in which data are recorded-serially. there is no (addressing), in this situation, how can different pieces of data known as record be identified on a tape? for this, Record are separated by blank spaces on the tape called (inter-record gaps) IRG, The IRGs are automatically created when data are written on the tape. Each IRG is reached, The tape remains motionless. until the record’ is processed. and then-moves again to read, the next record? this procedure is repeated.