Year 7 C3 2022 Past Paper Section B

8 BITS (01011011) is equivalent to:

• 1 Megabyte

• 1 Gigabyte

• 1 Byte

• 1 Terabyte

Which of these binary representations stores the biggest number?

• 1100

• 0111

• 1101

• 1000

Which of these software applications require location data to function properly?

• Sage Accounting.

• Google Maps.

• Excel.

• Movie Maker.

Which of the following Internet connections is considered very slow when compared to the speeds we have today?

• Fibre.

• Cable.

• DSL.

• Dial-Up.

What is an ISP?

• An organization that supplies medical equipment.

• An organization that sells educational resources.

• An organization that provides Internet access.

• An organization that repairs damaged ICT devices.

When saving in a hard disk or pen drive the data will stay there until it is overwritten or deleted, even if the power goes out. These types of storage devices are classified as:

• Non-Permanent.

• Volatile.

• Temporary.

• Non-Volatile

Identify the biometric technique shown in the picture below:

• Retinal Identification.

• Facial Recognition.

• Fingerprint Recognition.

• Voice Verification.

The diagram on the right represents a simple block diagram of a computer system. Select the name of the block marked with an X:

• Storage.

• Processing.

• Output.

• Input.

Encrypted-text transformed from plaintext using an encryption key (algorithm) is called:

• Hypertext.

• Teletext.

• Subtext.

• Ciphertext.

The Atbash Cipher (originally used to encrypt the Hebrew alphabet), simply reverses the plaintext alphabet to create the ciphertext alphabet. That is, the first letter of the alphabet is encrypted to the last letter of the alphabet, the second letter to the penultimate letter and so forth.

With this cipher, we simply take the alphabet and map it to its reverse. So when the Atbash cipher is used in English, A becomes Z, B becomes Y, and C becomes X.

Decode this name below written in Atbash Cipher. Use the space below to map the Atbash Cipher before answering the question.

QZNVH

• JASON

• JORDAN

• JAMES

• JORGE