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.