MODES OF COMPUTER OPERATION

burpfancyΗλεκτρονική - Συσκευές

8 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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MODES OF COMPUTER OPERATION



1.

A bank’s computer supports real time enquiries in the day, but at night works in
batch processing mode. Suggest three tasks that the computer would perform in
batch processing mode.

(3)





2.

A company is about to replac
e its old batch processing system for the preparation
of customer accounts, by a real time system.

a)

Give two distinct advantages, which could be expected as a result of this change
over.

b)

Suggest two problems that are likely to be encountered during th
e changeover
period.

(4)





3.

List the circumstances when batch processing is more appropriate than real time
processing.


(4)





4.

A computer system can be described as being a ‘pseudo real
-
time system’.

a)

State clearly what is meant by pseudo real
time.

(2)

b)

Give a situation where pseudo real time is essential, stating a reason why it is
needed.

(2)





5.

A nationwide chain of retail clothing stores processes its daily sales transactions
using a batch system based on a mainframe computer at a c
entral location.

State
two types of data, other than alphanumeric, that can be stored in a computer file.

(2)