Year 9 feb 25 Test

Chloe is working on a digital electronics project and needs to convert the binary number 1100 to its decimal equivalent. What is the decimal equivalent of the binary number 1100?

• The decimal equivalent of the binary number 1100 is 12.

• The decimal equivalent of the binary number 1100 is 10

• The decimal equivalent of the binary number 1100 is 20.

• The decimal equivalent of the binary number 1100 is 13.

Mira is learning about binary numbers in her computer science class. Her teacher asked her to find the binary equivalent of the decimal number 10. What should Mira write?

• A) 1010

• B) 1000

• C) 1001

• D) 1011

Arthur and Max are playing a game where they have to guess the state of a light bulb. The bulb can only be in one of two states. What are these states?

• 0 or 1

• 1 or 2

• 1 or 10

• 1 - 10

• False

William is learning about binary numbers in his computing class. His teacher asked him: The binary equivalent of the decimal number 10 is ____.

• A) 1010

• B) 1100

• C) 1011

• D) 1000

Arjun is organising his bookshelf and wants to label each shelf with a number. He decides to use binary numbers for labelling. If he labels a shelf with the binary number 0111, what is the decimal equivalent of this label?

• 5

• 6

• 7

• 8

In a computer science class, Emily was asked to fill in the blank: The American Standard Code for Information Interchange is a ___-bit character set used for representing English keyboard characters.

• 5

• 6

• 7

• 8

Emily is learning about different number systems in her maths class. She discovers a system that is most commonly used by people and contains 10 unique digits from 0 to 9. It is also known as decimal or base 10. What is this number system called?

• hexadecimal

• octal

• denary

• binary

Freya is setting up a new Wi-Fi router at home. What does frequency relate to in this context?

• Frequency relates to how fast data flows.

• Frequency relates to how data is stored

• Frequency relates to how data is contained

• Frequency is not related to data

Chloe is recording a podcast and wants to ensure the audio quality is high. She needs to know the number of samples recorded per second. What is this called?

• RPM

• MPH

• Sample rate

• KPH

Kiara is learning about number systems in her maths class. She discovers that the number system most commonly used by people is called ______. It contains 10 unique digits 0 to 9. Also known as decimal or base 10.

• hexadecimal

• octal

• denary

• binary