Which HTTP method is idempotent and used primarily for retrieving data?
- DELETE
- GET
- POST
- PUT
The GET method is idempotent and is used primarily for retrieving data from the server.
Which of the following techniques is effective for reducing response time in servlets?
- Disabling servlet caching.
- Increasing the servlet buffer size.
- Minimizing the use of session objects.
- Using asynchronous processing.
Using asynchronous processing in servlets is effective for reducing response time by allowing the server to handle other tasks while waiting for I/O operations, leading to improved overall system responsiveness.
How does connection pooling in servlets optimize database interactions?
- By caching database query results
- By establishing a new connection for each request
- By increasing the size of the database
- By reusing existing database connections
Connection pooling optimizes database interactions by reusing existing database connections, reducing the overhead of establishing a new connection for each request.
What is the impact of using lazy loading in servlets?
- Degrades performance by loading all resources upfront
- Has no impact on performance
- Improves performance by loading resources only when needed
- Reduces servlet flexibility
Lazy loading in servlets improves performance by loading resources only when needed, avoiding unnecessary resource loading upfront, which can lead to better response times.
Describe how a servlet can process AJAX requests using GET and POST methods.
- Both doGet and doPost methods
- Use a separate servlet for AJAX
- Use only doGet method
- Use only doPost method
A servlet can process AJAX requests using both the doGet and doPost methods. The choice depends on the nature of the AJAX request and the type of data being sent. Using both methods allows flexibility in handling various types of AJAX requests within the same servlet.
How does implementing gzip compression for responses optimize servlet performance?
- Has no impact on response size
- Improves servlet security
- Increases response size, causing longer download times
- Reduces response size, minimizing network latency
Implementing gzip compression for responses in servlets optimizes performance by reducing response size, minimizing network latency, and improving overall user experience during data transfer.
To optimize performance, a servlet should cache frequently used data in the ________.
- Database
- Request
- ServletContext
- Session
To optimize performance, a servlet should cache frequently used data in the ServletContext to make it available to all components of the web application.
In HTTP servlets, which method is commonly used for handling form submissions?
- doGet()
- doPost()
- init()
- service()
The doPost() method in HTTP servlets is commonly used for handling form submissions as it is designed for processing data sent in the body of an HTTP POST request.
To minimize server load, servlets can implement _________ to handle asynchronous processing.
- Asynchronous Servlets
- Listeners
- Synchronization
- Threads
To minimize server load, servlets can implement Asynchronous Servlets to handle asynchronous processing and improve the overall scalability of the application.
For a high-traffic web application, which servlet optimization strategy would best balance load?
- Implementing load balancing
- Increasing server cache size
- Minimizing session management
- Using a single server instance
Implementing load balancing is a key strategy to distribute the incoming traffic among multiple servers, ensuring a better balance and improved performance for a high-traffic web application.