L6M7 Practice Questions

Mo should run a script, which is an automated process that checks for errors such as duplicates,

missing values, and anomalies in the data. This significantly speeds up data validation compared to

manual checking.

This is air-gapping. Air-gapping is when you disconnect from an outside network such as the internet.

P.171

Domain: 3.1

A proxy is a type of firewall. It works at the IT application level rather than on a whole network. A

firewall is a security measure that prevents unauthorized access to a system. P.184

Domain: 3.2

Francis can make a Subject Access Request. This is when you ask what data do you hold about me.

The company must respond within 40 calendar days. A Freedom of Information request is different-

this is when a member of the public asks the government to reveal information such as 'how much

money have you spent on replacing toilet seats in Parliament?'. P.127

Domain: 2.3

This is The Cloud, which may also be called 'cloud computing' or 'cloud storage.' It is commonly used

in mobile phones to store data externally rather than on the device itself.

Commission: Data is mistakenly created, such as duplicate records.

Omission: Data is accidentally deleted or not recorded.

Manipulation: Data is changed incorrectly, such as an extra zero added to a value.

Corruption is not included because it refers to data being unreadable or damaged rather than

integrity being affected by an internal process. Corrosion refers to metal deterioration and is

unrelated to data.

The Data Processing cycle is acquisition - processing - reporting- storing. Do learn this off by heart.

The term processing means anything from using data, to altering it, to moving it or publishing it. Data

controller is a person or organisation that determines how the data is processed, but it's rarely used

as a verb (you don't say I'm 'controlling' the data'). P. 121

Domain: 2.3

This is the component approach - it looks at each individual component (each part of the IT system)

in turn to check its okay. When a component is not directly controlled by the organisation (e.g.

something to do with a supplier) this is called a dependency. Component approach is a bottom-up

approach and is the opposite of the top-down approach which is called the 'system driven approach'.

P.179

Domain: 3.2