Revision

Multiple Choice

What is binary?

• A part of the computer

• The way computers talk to each other

• A computer program

• Software for a computer

Multiple Choice

If 1 and 0 mean on and off. Is the number 1 on or off?

• On

• Off

Multiple Choice

What is the point of binary?

• Because it describes star systems

• Because we like to make you do extra math

• It represents how computers interpret electrical signals

• It is fun

Multiple Choice

What is the main function of binary code?

• Turning on switches to off

• Allowing computers to represent and store data

• Providing a gateway into higher mathematics

Multiple Choice

Which of these are the correct place values for binary?

• 128,64,32,16,8,4,2,1

• 128, 68,34,12,6,4,2,1

• 1,0

• 0,1

Multiple Choice

Convert the binary number 1110 to decimal

• 14

• 8

• 10

• 12

Multiple Choice

1101 to decimal

• 11

• 12

• 15

• 13

Multiple Choice

1011 to decimal

• 12

• 15

• 13

• 11

Multiple Choice

10111 to decimal

• 27

• 30

• 23

Multiple Choice

1111 to decimal

• 12

• 13

• 15

• 11

Multiple Choice

What is the decimal number 8 in binary?

• 0101

• 0011

• 1000

• 1111

Multiple Choice

Convert the decimal number 12 to binary

• 0001

• 0011

• 0111

• 1100

Multiple Choice

Convert the decimal number 15 to binary

• 0011

• 0101

• 1111

• 1101

Multiple Choice

Convert 128 to binary

• 10000001

• 10000000

• 01111110

• 11001100

Multiple Choice

What flowchart symbol does this represent?

• Input/Output

• Decision

• Start/End

• Process

Multiple Choice

What is this symbol?

• Decision

• Start/End

• Input/Output

• Process

Multiple Choice

What is an Algorithm?

• A set of instructions in order

• A task for the computer

Multiple Choice

What is this symbol used for in a flowchart?

• A decision/question

• A task to carry out

Multiple Choice

What symbol do flowcharts begin with?

• oval

• rectangle

• parallelogram

• diamond

Multiple Choice

Can this shape be used for both Start and Stop?

• Yes

• No

Multiple Choice

What symbol shows a decision?

• oval

• rectangle

• parallelogram

• diamond

Multiple Choice

What is used to connect the flowchart symbols together?

• Rectangles

• Arrows

• Lines

• Patterns

Multiple Choice

A logical step-by-step process for solving a problem is called

• Binary Numbers

• Algorithms

• Coding

Multiple Choice

A diagram that represents a set of instructions is called:

• Flow Chart

• Shapes

• Pseudocode

Multiple Choice

Flowcharts are from

• Left

• Bottom

• Right

• Top to bottom

Multiple Choice

What is the purpose of a flowchart?

• To plan the program before it is made

• Because it is easier

Multiple Choice

What's missing from this part of a flowchart?

• An Arrow

• A Square

• A Diamond

• A Line

Multiple Choice

What is the Output if the user enters:

• Leave umbrella at home

• Take an umbrella

Multiple Choice

Only top software programmers can write an algorithm.

• True

• False

Multiple Choice

What algorithm do we use when we're making a cake?

• A list of instructions

• A recipe

Multiple Choice

In a flowchart how are symbols connected?

• Symbols do not get connected together in a flowchart

• With dashed lines and numbers

• With solid lines to link events

• With lines and an arrow to show the direction of flow

Multiple Choice

When do you use an else statement?

• To tell what will happen when an if-statement is false

• To handle string values

• To end an IF statement

• To input a variable

Multiple Choice

Which of the following is NOT true about all algorithms?

• All algorithms can only do number calculations.

• All algorithms stop in a finite amount of time.

• All algorithms have an order.

• All algorithms have clear instructions.

Multiple Choice

The following code could be rewritten using:

• not

• and

• none of the answers

• or

Multiple Choice

When should you use an ELIF statement?

• To repeat sections of code

• To counter user actions

• To get user input

• To make a follow-up True/False decision

Multiple Choice

Write the code to test if the number in the variable text1 is greater than 15.

• if (text1 > "15"):

• if (text1 >= 15):

• if (text1 > 15):

• if (text1 < "15"):

Multiple Choice

Write the code to test if the number 78 is stored in the variable text1:

• if (text1 == "78"):

• if (text1 == 78):

• if ("text1" == 78):

• if (str(text1) == 78):

Multiple Choice

Write the code to test if the variables num1 and num2 are not the same.

• if (num1 < num2):

• if (not(num1 != num2)):

• if (num1 != num2):

• if (num1 == num2):

Multiple Choice

To test if x is greater than or equal to y:

if (x ___ y):

• >

• <=

• >=

• <

Multiple Choice

What is the output?

• 1

• 3

• 2

• 4

Multiple Choice

What is output?

• 1

• 3

• 2

• 4

Multiple Choice

What best defines an algorithm?

• Code that does an action

• Steps used to complete a goal

• Using IF and ELSE statements in order to gather input and print outputs

• A set of precise steps used to perform a task, typically on a computer

Multiple Choice

Write the code to test if x is greater than or equal to 2.

• if (x <= 2):

• if (x >= 2):

• if (x < 2):

• if (x > 2):

Multiple Choice

Pick the simplest line of code to test if the word "BASIC" is stored in the variable text1.

• if (text1 == str("BASIC")):

• if (int(text1) == BASIC):

• if (text1 == "BASIC"):

• if (text1 == BASIC):

Multiple Choice

Which of the following is equivalent to:

if (90 <= x <= 100):

• if (90 <= x and <= 100):

• if (90 <= x and x <= 100):

• if (90 <= x or <=100):

• if (90 <= x or x <= 100):

Multiple Choice

Which of the following is true?

a = 1

b = 10

• a < b and a == b

• b <= a or a >= b

• a < b and a != b

• a > b or a == b

Multiple Choice

Which of the following is used to show not equals?

• ==

• !!

• =!

• !=

Multiple Choice

Mark all the mistakes in the following code:

IF (name1 = "sue") :

• "sue" should not have quotes

• There should not be ( )

• IF should be if