Developer Skills Quiz

What is the main difference between "componentDidMount" and "useEffect" with an empty dependency array in functional components?

• componentDidMount is called every time the state changes, while useEffect is only called once after the first render.

• componentDidMount is called after every render, while useEffect is called only once.

• componentDidMount is called once after the component is mounted, while useEffect with an empty dependency array is called once after the first render.

• componentDidMount is not available in functional components, while useEffect can be used in functional components.

What is the purpose of database management in web development?

• To optimize website loading speed

• To create engaging content

• The purpose of database management in web development is to store, organize, and retrieve data efficiently, ensuring data integrity, security, and scalability of web applications.

• To design user interfaces

What does API stand for in the context of web development?

• Application Program Interface

• Advanced Programming Interface

• Automated Programming Interface

• Application Programming Interface

Why is web security important for online applications?

• Sensitive information is not at risk without web security

• Online applications are immune to cyber attacks

• Web security helps in safeguarding sensitive information, preventing cyber attacks, and maintaining the overall functionality and reliability of online applications.

• Web security is not important for online applications

What is React JS and what is it commonly used for?

• React JS is used for creating mobile applications

• React JS is primarily used for data analysis

• React JS is commonly used for building databases

• React JS is commonly used for building user interfaces in web applications.

What is a webhook and how is it used in web development?

• A webhook is a type of fishing tool used in web development to catch bugs

• A webhook is a new programming language used in web development for creating websites

• A webhook is a software tool used in web development to design user interfaces

• A webhook is a method of augmenting or altering the behavior of a web page or web application with custom callbacks. It is used in web development to allow third-party services to send real-time data to other applications or services as they happen.

How do you implement a Higher-Order Component (HOC) in React?

• By wrapping a component with a function that returns a new component.

• By using the useState hook in a functional component.

• By using the Context API to share global state.

• By using the useEffect hook to manage side effects.

What type of database is commonly used in web development for its flexibility?

• NoSQL database

• Excel spreadsheet

• SQL database

• Flat file database

What is the role of APIs in connecting different software applications?

• APIs facilitate the connection and interaction between different software applications.

• APIs are used for creating animations in software applications.

• APIs are primarily used for storing data in software applications.

• APIs are responsible for designing user interfaces in software applications.

How can developers protect user data from security threats in web applications?

• Use weak passwords for user accounts

• Implement secure coding practices, use encryption, update software regularly, validate input data, implement access controls, conduct security testing, and stay informed about security threats.

• Ignore security measures completely

• Share user data openly on social media