SYSTEM LIFE CYCLE

What type of validation check ensures that a data input falls within a specified upper and lower limit?

• Type/character check

• Length check

• Range check

• Format check

Which validation check verifies that the data entered consists of the correct kind of characters, such as letters or numbers?

• Presence check

• Type/character check

• Length check

• Check digit

A validation check that confirms a data field has not been left empty is known as a:

• Format check

• Presence check

• Length check

• Range check

What is the purpose of a "length" validation check?

• To ensure data is in the correct structure.

• To verify data is within acceptable limits.

• To confirm data contains the required number of characters.

• To check if a field has been filled.

Which of the following describes a "check digit"?

• A verification that data is of the correct type.

• A confirmation that data has been entered.

• An extra digit calculated from other digits to ensure accuracy.

• A check to see if data is within a specific range.

Which research method involves watching personnel use an existing system to understand its operation?

• Interviews

• Questionnaires

• Observation

• Looking at the existing documents

A one-to-one question-and-answer session between an analyst and a user is characteristic of which research method?

• Observation

• Interviews

• Questionnaires

• Looking at the existing documents

Distributing questionnaires to gather views from the workforce, clients, or system users is a key aspect of which research method?

• Interviews

• Looking at the existing documents

• Observation

• Questionnaires

Which research method allows an analyst to examine operating instructions and training manuals?

• Questionnaires

• Observation

• Looking at the existing documents

• Interviews

If an analyst wants to probe deeply into one specific aspect of an existing system, which method would be most suitable?

• Observation

• Questionnaires

• Looking at the existing documents

• Interviews