10IT

Which statement best distinguishes data from information?

• Data are raw facts; information is processed data with meaning.
• Data and information are identical terms.
• Information is always numerical; data are always text.
• Data requires context; information does not.

Which is an example of INFORMATION in a school context?

• A list of unlabelled numbers: 78, 65, 90.
• A scanned blank attendance form.
• A report: 'Class 10A average = 78% this term.'
• A pile of unsorted answer sheets.

Validation primarily checks…

• Whether data looks reasonable (format/range).
• Whether a copy exactly matches the original.
• Whether encryption keys are valid.
• Whether data is stored in the cloud.

Which is a VERIFICATION method?

• Range check (13–18).
• Double data entry and comparison.
• Format check for email.
• Length check (8 digits).

A student self-reported web survey is a…

• Direct data source.
• Indirect data source.
• Encrypted dataset.
• Random sample only.

Canteen POS sales logs from last month are a…

• Direct data source.
• Indirect data source.
• Verification dataset.
• Validation dataset.

Which set lists ONLY information quality factors?

• Accuracy, Completeness, Timeliness.
• Bandwidth, Frequency, Latency.
• Algorithm, Variable, Loop.
• Browser, Cookie, Cache.

Which scenario shows a TIMELINESS problem?

• Using last year’s grades to decide this term’s awards.
• Recording 87% instead of 78% due to a typo.
• Collecting data from only one class out of five.
• Mixing DD/MM and MM/DD in one spreadsheet.

A CONSISTENCY issue would be…

• Different date formats used in the same dataset.
• Too small sample size.
• Old data used for current decisions.
• Spelling errors in an email.

Standard ASCII uses how many bits?

• 5
• 7
• 8
• 16