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Computer Science

GCSE · OCR

QuestionsFlashcards

Identifying & Preventing Threats to Computer Systems & Networks
- Forms of Attack on a Network
  8
- Methods of Preventing a Network Attack
  10

Operating Systems & Utility Software
- The Purpose & Functionality of Operating Systems
  7
- The Purpose & Functionality of Utility Software
  6

Ethical, Legal, Cultural & Environmental Impact
- Impacts of Digital Technology on Wider Society
  7
- Legislation in Computer Science
  8

Boolean Logic Diagrams
- Boolean Logic Diagrams
  9
- Combining Boolean Operators
  7

Trace Tables Flashcards

All 5 cards in this deck

What is a trace table?: A table containing all the variables in a program with their values recorded at each step of execution.
What is a dry run?: A manual test of a program on paper, using a trace table to follow the execution step by step.
In a trace table, what do the rows and the columns represent?: Each row is one instruction (or pass) and each column is one variable, plus a column for the output.
In a trace table for an algorithm containing a loop, what is recorded for each pass of the loop?: A new row giving the variable values after that pass, including the loop counter and the result of the condition.
True or false? A trace table is used to find syntax errors in a program.: False. It locates logic errors by showing where actual variable values differ from the expected values.