For optimal servlet performance, session data should be kept to a minimum, utilizing ________ for state management.
- Cookies
- Hidden Fields
- Session Tracking
- URL Rewriting
For optimal servlet performance, session data should be kept to a minimum, utilizing Session Tracking for state management.
To improve scalability, servlets can delegate database reads to ________ instances.
- Observer
- Singleton
- Stateful
- Stateless
To improve scalability, servlets can delegate database reads to Stateless instances, as they do not maintain client-specific state between method calls.
A servlet handling massive data queries is experiencing performance issues. What optimization technique should be prioritized?
- Caching results
- Increasing server hardware
- Minifying CSS and JavaScript files
- Optimizing database queries
Optimizing database queries would be a key strategy in this scenario, as it directly addresses the performance issues associated with handling massive data queries.
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.
In a resource-constrained environment, what servlet coding practice would you recommend to optimize memory usage?
- Disabling compression
- Increasing session timeout
- Reducing unnecessary object creation
- Using synchronous servlets
Reducing unnecessary object creation is a good practice to optimize memory usage in a resource-constrained environment, as it helps minimize the overhead associated with object allocation.
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.
What is a memory leak in the context of Java programming?
- A memory leak occurs when a program allocates memory but forgets to deallocate it, leading to a gradual reduction in available memory.
- A memory leak occurs when a program deallocates memory properly, ensuring optimal memory usage.
- Memory leaks are intentionally created to enhance program performance.
- Memory leaks only occur in languages other than Java.
A memory leak in Java programming happens when the program allocates memory but forgets to deallocate it, resulting in a gradual reduction in available memory.
Can session tracking be implemented using hidden form fields?
- Depends on the browser
- No
- Possible only in HTTPS
- Yes
Session tracking can be implemented using hidden form fields by including the session identifier in the form, allowing it to be sent back to the server with each form submission.