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.
In high-performance servlets, _________ pattern can be used to manage resource-intensive objects.
- Command
- Flyweight
- Observer
- Singleton
In high-performance servlets, the Flyweight pattern can be used to manage resource-intensive objects efficiently by sharing common parts of state among multiple objects.
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.
The ServletContext is shared across multiple servlets within a __________.
- request
- server
- session
- web application
The ServletContext is shared across multiple servlets within a web application.