CSS - PMS - CCE - PCS - General Science
Internetq
What does DNS do?
A. Compresses videos only
B. Controls CPU voltage
C. Creates passwords
D. Translates domain names into IP addresses and related records
Correct Answer: D
The Domain Name System maps human-readable names to network addressing information.
CSS - PMS - CCE - PCS - General Science
Internetq
What is an IP address used for?
A. Encrypting every file automatically
B. Identifying and addressing a device or network interface on an IP network
C. Measuring CPU temperature
D. Storing a website's colors
Correct Answer: B
IP addresses support packet delivery between network endpoints.
CSS - PMS - CCE - PCS - General Science
Internetq
What does IP stand for in TCP/IP?
A. Internet Protocol
B. Integrated Processing
C. Internet Page
D. Internal Program
Correct Answer: A
IP handles addressing and routing of packets across networks.
CSS - PMS - CCE - PCS - General Science
Internetq
Which protocol suite forms the basic communication foundation of the Internet?
A. Bluetooth only
B. HTML only
C. TCP/IP
D. USB
Correct Answer: C
Internet communication is built around the TCP/IP protocol suite.
CSS - PMS - CCE - PCS - General Science
Internetq
What is the Internet?
A. A type of CPU
B. A single website
C. A local hard drive
D. A global network of interconnected computer networks
Correct Answer: D
The Internet links networks worldwide using standard communication protocols.
CSS - PMS - CCE - PCS - General Science
Data Science
What is a common risk of biased training data?
A. The monitor loses power
B. The CPU clock always slows
C. All data becomes encrypted
D. The model may produce systematically unfair or inaccurate outputs for some groups or situations
Correct Answer: D
Models can reproduce and amplify patterns present in biased or unrepresentative data.
CSS - PMS - CCE - PCS - General Science
Data Science
What is a database query used for?
A. Retrieving or manipulating data according to specified conditions
B. Cooling a server
C. Measuring voltage
D. Drawing a circuit
Correct Answer: A
Queries express operations such as selecting, filtering, joining or aggregating data.
CSS - PMS - CCE - PCS - General Science
Data Science
What is a data visualization?
A. A hardware driver
B. A graphical representation of data used to communicate patterns or comparisons
C. A password list
D. A binary file only
Correct Answer: B
Charts and plots can make trends and relationships easier to interpret.
CSS - PMS - CCE - PCS - General Science
Data Science
Why is a train-test split used?
A. To encrypt half the records
B. To change labels
C. To double the dataset physically
D. To evaluate how well a model generalizes to unseen data
Correct Answer: D
Testing on held-out data estimates out-of-sample performance.
CSS - PMS - CCE - PCS - General Science
Data Science
What is correlation?
A. Proof that one variable causes another
B. A type of database key only
C. A statistical measure of association between variables
D. A file compression method
Correct Answer: C
Correlation quantifies association but does not by itself establish causation.
CSS - PMS - CCE - PCS - General Science
Data Science
What is a target variable?
A. A data cable
B. A random folder
C. The outcome a supervised model is trained to predict
D. A chart title only
Correct Answer: C
In supervised learning, the target is the labeled output.
CSS - PMS - CCE - PCS - General Science
Data Science
What is a feature in machine learning?
A. An input variable used by a model
B. A password
C. A model's final prediction only
D. A CPU fan
Correct Answer: A
Features are measurable attributes supplied to a model.
CSS - PMS - CCE - PCS - General Science
Data Science
What is exploratory data analysis (EDA)?
A. A backup protocol
B. Final hardware assembly
C. A web browser feature
D. Initial investigation of data using summaries and visualizations
Correct Answer: D
EDA helps reveal patterns, anomalies and relationships before formal modeling.
CSS - PMS - CCE - PCS - General Science
Data Science
What is data cleaning?
A. Detecting and correcting or handling inaccurate, missing or inconsistent data
B. Encrypting data only
C. Printing a dataset
D. Deleting every record
Correct Answer: A
Data cleaning improves data quality before analysis or modeling.
CSS - PMS - CCE - PCS - General Science
Data Science
What is data science?
A. Only data entry
B. Only computer repair
C. An interdisciplinary field that extracts knowledge and insight from data
D. A type of cable
Correct Answer: C
Data science combines statistics, computing, domain knowledge and communication.
CSS - PMS - CCE - PCS - General Science
Cyber Security
What is the principle of least privilege?
A. Using no passwords
B. Storing all data publicly
C. Giving users and processes only the permissions needed for their tasks
D. Giving everyone administrator access
Correct Answer: C
Least privilege limits the damage from mistakes or compromised accounts.
CSS - PMS - CCE - PCS - General Science
Cyber Security
Why are security patches important?
A. They make passwords public
B. They disable all encryption
C. They increase phishing success
D. They fix known vulnerabilities and software defects
Correct Answer: D
Applying patches reduces exposure to known exploits.
CSS - PMS - CCE - PCS - General Science
Cyber Security
What is a software vulnerability?
A. A user interface theme
B. A backup copy
C. A weakness that can be exploited to compromise a system
D. A guaranteed feature
Correct Answer: C
Vulnerabilities can arise from coding errors, misconfiguration or design flaws.
CSS - PMS - CCE - PCS - General Science
Cyber Security
What is encryption?
A. Sorting files alphabetically
B. Deleting data permanently
C. Compressing images only
D. Transforming readable data into a protected form using a cryptographic key or algorithm
Correct Answer: D
Encryption helps protect confidentiality from unauthorized readers.
CSS - PMS - CCE - PCS - General Science
Cyber Security
What is a firewall?
A. A physical wall around a computer
B. A type of keyboard
C. A data file only
D. A system that filters network traffic according to security rules
Correct Answer: D
Firewalls enforce traffic policies between networks or hosts.