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.
What is the primary purpose of garbage collection in Java?
- Accelerating compilation
- Enhancing network performance
- Freeing up memory
- Optimizing CPU usage
The primary purpose of garbage collection in Java is to free up memory by identifying and reclaiming the memory occupied by objects that are no longer reachable or in use.
In Java, which keyword is used to manually suggest the garbage collector?
- delete
- finalize
- free
- nullify
The finalize keyword in Java is used to manually suggest the garbage collector to consider an object for garbage collection.
Which of these is not a type of memory area in the Java Virtual Machine (JVM)?
- Cache
- Heap
- Registers
- Stack
Cache is not a type of memory area in the Java Virtual Machine (JVM). The primary memory areas in JVM include Heap, Stack, and Registers.
Using _________ instead of concatenation in loops for string manipulation enhances performance in servlets.
- CharArray
- String
- StringBuffer
- StringBuilder
Using StringBuilder instead of concatenation in loops for string manipulation enhances performance in servlets because StringBuilder is more efficient in handling string concatenation operations.