Paper B Quiz

The worst-case time-complexity of bubble-sort is:

• O(n)

• O(log n)

• O(n²)

• O(n log n)

TCP/UDP port 443 is reserved for:

• HTTP

• HTTPS

• FTP

• SSH

Which normal form removes transitive dependencies?

• NF

• NF

• NF

• BCNF

A smart-card used for login belongs to which MFA factor category?

• Something you know

• Something you have

• Something you are

• Somewhere you are

Which SQL keyword eliminates duplicate rows in a result set?

• UNIQUE

• DISTINCT

• ORDER BY

• GROUP BY

The algorithmic paradigm that breaks a problem into sub-problems, stores the results, and re-uses them is called:

• Divide-and-Conquer

• Greedy

• Dynamic Programming

• Brute Force

A DDoS attack is characterised by traffic that:

• Comes from a single host

• Comes from many distributed hosts

• Injects SQL

• Encrypts files for ransom

In data engineering, ETL stands for:

• Extract Transform Load

• Evaluate Transfer Log

• Extract Test Link

• Encode Transform Lint

In a flow-chart, the parallelogram symbol denotes:

• Start/Stop

• Process

• Decision

• Input/Output

A data lake is primarily intended to store:

• Structured OLAP cubes

• Machine-code binaries

• Raw, unstructured or semi-structured data

• Only compressed log files