2.1

• What is the definition of abstraction in computational thinking?

  Simplifying a problem by only considering the necessary details required to obtain a solution.
• What does data abstraction involve?

  The storage and representation of data in a computer system along with its logical description and interaction with operators.
• Give an example of data abstraction.

  Stacks, queues, integers.
• What is graph theory?

  A branch of mathematics that can be used to abstractly represent problems using a collection of nodes connected by edges.
• What is caching in computing?

  The temporary storage of data by the system in cache or memory for faster retrieval in the future.
• What are inputs in the context of a computing problem?

  Any information relevant to the problem that is required by the system for processing according to an algorithm.
• What are outputs in a computing system?


  The result returned by a system for a given input after running the entire process or part of a process.
• What are preconditions in a computing context?

  A prerequisite or state of a system and its surroundings required to run a use case and return a valid solution.
• What are reusable program components?

  Components that have already been written, debugged, and tested that can be transplanted into new systems to save development time.
• What is procedural abstraction?

  Achieving a task by relying on a procedure of sequential steps.
• What are the components of a problem in computational thinking?

  The smaller, simpler series of tasks and sub-procedures a problem can be broken down into to be completed modularly.
• What are flowcharts used for in programming?

  They are a diagrammatic representation of the flow of a program that includes all the points where a decision needs to be taken.
• What are logical conditions in programming?

  Conditions which may depend on one or more variables used to determine the next step whenever a system has to make a decision.
• What is concurrent processing?

  Processing where the system appears to perform multiple tasks simultaneously.