Data, Knowledge Information Yr 12-2

Example form of coding data is _____

• Male, Female

• Small, Medium, Large, Extra Large

• M or F

• None of the above

Which of the following is not an item of data?

• Numbers

• Report

• Images

• Raw facts

Which of the following is not a good quality of information?

• Level of detail

• Accuracy

• Age

• Irrelevance

(a)   compression reduces file size by reducing the bit rate which means some of the quality is lost.

Benefits of encoding data include _______

• Easier to read the encoded data

• Less storage space required, faster to enter data

• Quicker to access data

Taking a secret message and reproducing the original plain text is known as?

• Caesar Cipher

• Cipher Text

• Encryption

• Decryption

PNG is a type of an image file. What does it stand for?

(a)  

One type of error in a computer system is ___

• Rubbish in, Rubbish out

• Trash in, Trash out

• Garbage in, Garbage out

In ________________ encryption, the sender and the recipient use the same secret key to encrypt and decrypt data.

• public key cryptography

• asymmetric encryption

• symmetric encryption

• all of the above

_______________ is the process of checking that data entered in to the computer system matches the original source.

• Verification

• Validation

• Identification

• Double entry