Chapter 20: Exchanging Data: Transaction Processing

A-level Computer ScienceOCR6 topicsHigher

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Assembly Language Long-Answer Questions

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4 questions24 marks36 min

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6 marksdescribestandardOCR A

CS20-1 assembly language: describe how LDA, STA, ADD, CMP, BNE and HALT instructions operates in a short loop summing values in memory, using precise OCR H446 terminology.

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6 marksexplainstandardOCR A

CS20-2 applied case: explain why LDA, STA, ADD, CMP, BNE and HALT instructions would affect a short loop summing values in memory, including one limitation or trade-off.

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6 markswritehardOCR A

CS20-3 task for assembly language: write a response using LDA, STA, ADD, CMP, BNE and HALT instructions in a short loop summing values in memory; produce the accumulator and memory state.

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6 marksevaluatesynopticOCR A

CS20-4 synoptic judgement: evaluate the suitability of LDA, STA, ADD, CMP, BNE and HALT instructions for a short loop summing values in memory, comparing it with one credible alternative.

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19. Exchanging Data: Defining and Updating Tables Using SQL

21. Networks and Web Technologies: Structure of the Internet

Key learning objectives

Understand the key principles behind Exchanging Data: Transaction Processing.
Apply these ideas to exam-style questions.
Recall the essential definitions and key terms.