N5 Computing Science: Algorithm Specification

Before studying the topic "Implementation: Algorithm specification," you should be familiar with which of the following data structures?

• 1D arrays

• 2D arrays

• tuples

• dictionaries

Answer explanation

Before studying the topic 'Implementation: Algorithm specification,' you should be familiar with 1D arrays as mentioned in the correct answer choices.

Which programming constructs should you be familiar with before studying the topic "Implementation: Algorithm specification"?

• Programming constructs from User Interface Design

• Programming constructs from Implementation: Computational constructs

• Programming constructs from System Maintenance

• Programming constructs from Security Protocols

Answer explanation

Before studying the topic 'Implementation: Algorithm specification,' you should be familiar with programming constructs from Implementation: Computational constructs.

What is one of the learning objectives for the topic "Implementation: Algorithm specification"?

• Write code that will validate a piece of user data that is entered.

• Design a user interface for data input and validation.

• Develop a new programming language for data structures.

• Create a network protocol for data transmission.

Answer explanation

The learning objective for 'Implementation: Algorithm specification' is to write code that validates user-entered data, making it the correct choice.

By the end of the topic "Implementation: Algorithm specification," you should be able to perform which of the following tasks?

• Traverse a 2D array to read or assign data in the array.

• Traverse a 1D array to read or assign data in the array.

• Implement a complex sorting algorithm.

• Design a database management system.

Answer explanation

The correct task that can be performed by the end of the topic 'Implementation: Algorithm specification' is to traverse a 1D array to read or assign data in the array.

Which concept should you be able to use within a loop by the end of the topic "Implementation: Algorithm specification"?

• The concept of a running total within a loop.

• The concept of recursive functions within a loop.

• The concept of object-oriented programming within a loop.

• The concept of event-driven programming within a loop.

Answer explanation

The concept of a running total within a loop is the key concept to be able to use by the end of the topic 'Implementation: Algorithm specification'.

Which of the following describes an array?

• A series of similarly named variables.

• A named storage location that can store any data type.

• Another word for an integer variable.

• A named storage location that can store multiple data items of the same type.

Answer explanation

An array is a named storage location that can store multiple data items of the same type, making it the correct choice.

Which of the following lines of code shows an assignment?

• IF score = 10 THEN

• FOR item FROM 1 to 30 DO

• SET players TO 4

• SEND "Well Done" TO DISPLAY

Answer explanation

The line 'SET players TO 4' is an assignment statement where the variable 'players' is being assigned the value of 4.

What is the primary purpose of input validation in programming?

• To ensure that the program runs without errors.

• To check that data being entered is sensible or feasible.

• To guarantee that the data is correct.

• To repeat the code asking the user to enter their data.

Answer explanation

The primary purpose of input validation in programming is to check that data being entered is sensible or feasible.

What does input validation not guarantee?

• That the data meets a set of criteria we decide upon.

• That the data is being entered repeatedly.

• That the data is correct.

• That the program will run faster.

Answer explanation

Input validation does not guarantee that the data is correct, as it only ensures the data meets specified criteria, not its accuracy.

Input validation is sometimes referred to as what type of algorithm at N5 level?

• A complex algorithm

• A standard algorithm

• A conditional algorithm

• An iterative algorithm

Answer explanation

Input validation is referred to as a standard algorithm at N5 level because it follows a set of predefined steps to validate input data.