SST Yr8 - NCCE - Algorithms 2

Question 1: Sam has been asked to improve his program to make it more efficient. What is efficiency in algorithm design?

• A: The algorithm is written faster and has no errors
• B: The algorithm executes faster and uses less memory
• C: The algorithm is developed faster and uses decomposition
• D: The algorithm executes faster and uses less iteration

Question 2: The building blocks of all programming language are Sequence, Selection, & Repetition. Together, what are these called?

• A: Constructs
• B: Algorithms
• C: Commands
• D: Syntax

Question 3: An algorithm is a set of steps that shows how to solve a problem. Which of the following is NOT used to represent an algorithm?

• A: Pseudocode
• B: Flowchart
• C: Mind-map
• D: Structured English

Question 4: What does the shape below represent?

• A: Input/Output
• B: Process
• C: Decision
• D: Terminator

Question 5: Which pseudocode line includes casting?

• A: num = int(num)
• B: num = avg(num)
• C: num = upper(num)
• D: num = floor(num)

Question 6: A program is needed to output the numbers 1 to 1000. Identify which of the following can meet this need with the fewest lines of code.

• A: for loop
• B: while loop
• C: If statement
• D: do until loop

Question 7: What does the following flowchart symbol represent?

• A: Input/Output
• B: Process
• C: Decision
• D: Terminator

Question 8: What is the difference between a while loop and a do until loop?

• A: A while loop always runs once, whereas a do until loop always runs at least twice
• B: A while loop may run forever, whereas a do until loop will always stop after a certain number of loops
• C: A while loop always runs once, whereas a do until loop may run forever
• D: A while loop may never run, whereas a do until loop always runs at least once

Question 9: Which of the following loops, if using a counter, does not declare the counter variable inside the loop

• A: do until
• B: for
• C: repeat
• D: while

Question 10: What does the following flowchart symbol represent?

• A: Input/Output
• B: Process
• C: Decision
• D: Start/Stop