Interface means something different to a frontend developer, a Java engineer, and a hardware specialist. Driver means something different to a DevOps engineer, a DBA, and a product manager. Can you identify the right meaning from context?
Master → Main — Git default branch rename and why it happened
0 / 5 completed
1 / 5
A frontend developer says to a junior:
"The design team sent the new interface mockups — need to match them in the React components."
What does "interface" mean here?
Interface (UI / UX context) — the visual, interactive surface of an application: buttons, forms, navigation, screens. "Interface mockups" = design files (Figma, Sketch) showing what the UI should look like.
The same word, different contexts:
User Interface (UI) — what the user sees and interacts with. "The new interface is cleaner.""We need to redesign the interface."
OOP interface — a contract: a set of method signatures a class must implement. In Java: interface Serializable { ... }. In TypeScript: interface User { id: number; name: string; }. Guarantees what an object can do without specifying how.
Hardware interface — physical or protocol connection between components: USB interface, HDMI interface, SPI interface.
API / programmatic interface — how software components communicate: "The public interface of this module" = the exported functions/classes others can call.
Key distinction: In a design/product discussion → UI meaning. In an OOP/architecture discussion → contract meaning.
2 / 5
A DevOps engineer files a ticket:
"The GPU driver installed on the worker nodes is outdated — it's causing CUDA failures in the ML training jobs."
What does "driver" mean here?
Driver (hardware / OS context) — a software component that acts as a translator between the operating system and a specific hardware device. Without the correct driver, the OS cannot control the hardware. A GPU driver (NVIDIA, AMD) exposes the GPU's capabilities to the OS and applications like CUDA or OpenCL.
The same word, different contexts:
Hardware driver — software that controls a device: GPU driver, network adapter driver, printer driver, USB driver. "Update your graphics driver."
Database driver — a library that handles the communication protocol between your application and a specific database: pg (PostgreSQL driver for Node.js), psycopg2 (Python), JDBC driver, MongoDB driver. "We're using the official MongoDB driver for Python."
Business/technical driver — a factor that motivates or causes a decision: "The main driver behind migrating to microservices was team scalability.""Cost is the primary driver for this refactor."
Everyday English — a person who drives a vehicle.
3 / 5
A tech lead asks a junior to update documentation:
"This README still says 'push to master' — update it to use main everywhere."
Why is the lead asking for this change?
master → main: the Git default branch rename
In 2020, GitHub changed its default branch name from master to main following discussions about removing language with connections to slavery (master/slave terminology). GitLab, Bitbucket, and most other platforms followed.
Practical implications:
New GitHub repos created after Oct 2020 use main by default
Old repos still use master unless manually renamed
CI/CD pipelines, scripts, and documentation that hardcode master need updating
git config --global init.defaultBranch main — sets your local default
Other terms that changed at the same time:
slave → replica (databases: master/slave replication → leader/follower or primary/replica)
master/slave in hardware (I2C, SPI protocols) → controller / target
In code reviews: if you see old documentation using "master" for the branch, updating it to "main" is a quick, appreciated contribution.
4 / 5
A backend developer explains a system design decision:
"We chose a reactive architecture so the service scales horizontally. The main driver was the unpredictable traffic spikes during flash sales."
In this sentence, "driver" means:
Driver (business / decision context) — a factor that motivates, causes, or shapes a decision. "The main driver was X" is a very common business and technical expression meaning "the main reason / primary motivation was X".
More examples of this usage:
"Cost reduction was the key driver for migrating to a serverless architecture."
"The performance driver here is the database query — everything else is fast."
"What are the business drivers for adding this feature now?"
"Growth is the primary driver — we're optimising for acquisition, not retention yet."
In technical writing, you'll often see "driver" used this way in architecture decision records (ADRs), technical proposals, and engineering blog posts to explain the why behind a design choice.
Note: this is the same word used in three completely different contexts in IT English — hardware driver, database driver, and motivating factor. Context (and surrounding vocabulary) always makes it clear which meaning is intended.
5 / 5
A QA engineer reads a pull request description:
"Added a new UserRepository class that implements the Repositoryinterface. This means it's guaranteed to have findById(), save(), and delete() methods."
What does "interface" mean in this OOP context?
Interface (OOP / type system context) — a contract that defines what methods a class must provide, without specifying their implementation. When a class implements an interface, it guarantees the caller that all interface methods will be available.
Why interfaces matter:
Decoupling: Code depends on the interface, not the concrete class — you can swap MySQLRepository for PostgreSQLRepository without changing the code that uses it
Testability: You can create a fake/mock implementation of the interface for unit tests
Polymorphism: Multiple classes can implement the same interface — any of them can be used where the interface type is expected
Python: abstract base class (ABC) serves the same purpose
Go: interfaces are implicit — if a type has the required methods, it implements the interface (no explicit implements keyword)
Interface vs. Abstract class: An interface defines what to do. An abstract class can also define how (provide partial implementations). A class can implement many interfaces, but usually only extends one class.
What does the "" exercise cover?Is this exercise free to use?
Yes. Every exercise on CoderSlingo, including this one, is free to use with no account, sign-up, or paywall.
How many questions are in ""?
This exercise has 5 questions. Each one gives instant feedback with an explanation, so you can see exactly why an answer is right or wrong.
Do I need to create an account to save my progress?
No account is required. The progress bar and score are tracked in your browser for the current session -- the exercise is designed to be a quick, repeatable drill rather than something you resume later.
What happens if I get an answer wrong?
You'll see the correct answer highlighted immediately, along with a short explanation of why it's correct. Wrong answers aren't penalized beyond your score, and you can keep going through every question.
How is this exercise different from reading an article?
Articles explain vocabulary and concepts through prose, while exercises like this one are interactive drills -- multiple-choice questions -- that test and reinforce your recall of specific terms and phrasing.
Can I retry this exercise?
Yes -- use the "Try again" button on the results screen to reset your score and go through all the questions again from the start.
Where can I find more False Friends & Tricky Words exercises?
Browse the full False Friends & Tricky Words hub for related drills, or check the site-wide exercises index for other IT English topics.
Is this exercise suitable for beginners?
This exercise assumes basic familiarity with IT terminology. If a term feels unfamiliar, check the site Glossary for a plain-English definition before attempting the questions.
How often is new content like this published?
New exercises are added regularly across all categories, alongside new vocabulary sets and articles. Check back on the exercises hub to see what's new.