Test - 23 April 2018

Question 1

Define binary

Answer 1

The system that expresses numbers and letters using only the digits 0 and 1.

Question 2

1000B is equal to….

Answer 2

1KB

Question 3

1000KB is equal to….

Answer 3

1MB

Question 4

1000MB is equal to….

Answer 4

1GB

Question 5

1000GB is equal to….

Answer 5

1TB

Question 6

What are the three simple steps often used in explaining how something is presented

Answer 6

Input > Process > Output

Question 7

What are some examples of an input device?

Answer 7

Keyboard, camera

Question 8

What are some examples of an output device?

Answer 8

Printer, instagram post

Question 9

What is computational thinking?

Answer 9

Something that people do that involves logical thinking about problems so that a computer can solve it

Question 10

What is a variable?

Answer 10

Specific information that you want the computer to remember

Variables are used in coding to identify and store changing data eg. numbers/ sentences

If you think of them like a container, the contents might change but the labelled box stays the same

Question 11

What is a loop?

Answer 11

A piece of code that tells the computer to repeat something

When creating a loop in code, you need to tell the computer what conditions should end it or how many times it should repeat

If you want it to repeat forever, it’s called an infinite loop

Question 12

What are conditionals?

Answer 12

The things used when you need the computer to decide something

If ___________, then ____________

If you want something to happen if the condition isn’t true then you use an “else” statement

Question 13

What is an algorithm?

Answer 13

A set of instructions you follow in a certain order to complete a task

It puts remembering, repeating and making simple decisions into a sequence that the computer can follow to deliver a result

Question 14

Names of features in flowcharts

Answer 14

Start or stop
Process
Decision
Input or output
Direction of flow

Question 15

Symbol and usage of START/ STOP in flowcharts

Answer 15

Symbol - wide oval like this 🚥

Usage - beginning and end points in sequence

Question 16

Symbol and usage of PROCESS in flowcharts

Answer 16

Symbol - wide rectangle like this ➖
Usage - instruction or command
You don’t write “process” in the box, you write the process you want

Question 17

Symbol and usage of DECISION in flowcharts

Answer 17

Symbol - diamond like this ♦️ but turned sideways so that its width in longer than its height
Usage - a decision, either yes or no
You don’t write “decision” in the triangle, you write what the decision is

Question 18

Symbol and usage of INPUT/ OUTPUT in flowcharts

Answer 18

Symbol - a parallelogram /_____ / like that but the corners touch and there is a top to it
Usage - input is data received by computer, output is data sent from a computer
You write whatever the input/ output is inside the parallelogram

Question 19

Symbol and usage of DIRECTION OF FLOW in flowcharts

Answer 19

Symbol - arrow in the desired direction like ➡️,⬅️,⬆️ or ⬇️

Usage - connects symbols and shows direction of flow of instructions