Grade 10 Term 2 Assessment 2

In which of the following compression method, the original file can be reconstructed?

• Lossy Compression
• Irreversible Compression
• Destructive Compression
• Lossless Compression

RLE is an example __________ compression method.

• lossy
• lossless
• uncompressed
• encrypted

Apply RLE to the following the text AAABBBCCCDEEE.

• A3B2C3D1E3
• A2B3C3D1E3
• A3B3C3D1E3
• A3B3C2D1E3

Cropping an image to reduce file size is an example of ____________ compression method.

• Resolution
• Lossy
• Data
• Lossless

Compression is used to ______________.

• Increase the size of data
• Improve data quality
• Enhance data security
• Reduce the size of data

Which statement explains the purpose of encryption?

• Encryption is used to share information publicly.
• Encryption is used to slow down computer processing.
• Encryption is used to delete sensitive information.
• Encryption is used to protect sensitive information.

The two types of encryption are :

• basic and advanced
• public and private
• one-way and two-way
• symmetric and asymmetric

What is encryption?

• Encryption is the process of converting information into a code to prevent unauthorized access.
• Encryption is the process of sharing information openly
• Encryption is the process of decrypting information
• Encryption is the process of converting information into a physical form

How is symmetric encryption different from assymetric encryption?

• Symmetric encryption is more secure than asymmetric encryption.
• Symmetric encryption is slower than asymmetric encryption.
• Symmetric encryption uses the same key for both encryption and decryption, while asymmetric encryption uses a pair of public and private keys.
• Symmetric encryption uses a pair of public and private keys, while asymmetric encryption uses the same key for both encryption and decryption.

What is the purpose of a public key in asymmetric encryption?

• To decrypt data that can only be encrypted by the corresponding private key
• To generate a symmetric key for encryption
• To encrypt data that can only be decrypted by the corresponding private key
• To authenticate the sender of the encrypted data