When implementing a servlet to handle form data from a dynamically generated form with varying field names, what strategy should be employed?
- Ignore dynamic form fields for security
- Iterate through request parameters
- Use fixed field names for all form elements
- Use hidden fields to store dynamic names
The recommended strategy is to iterate through request parameters, allowing dynamic handling of varying field names in a dynamically generated form. This approach ensures that all form data, regardless of field names, can be processed dynamically.
In a high-performance Java application, how should memory management be approached to prevent latency issues?
- Frequent use of finalize method
- Implement lazy loading for classes
- Opt for a large heap size
- Utilize efficient garbage collectors
Utilizing efficient garbage collectors is essential for high-performance applications. Implementing lazy loading, opting for a large heap size, and frequent use of the finalize method can lead to latency issues and should be avoided in performance-sensitive applications.
What is the primary purpose of caching in web applications?
- To add security
- To design the user interface
- To handle user authentication
- To improve performance
The primary purpose of caching in web applications is to improve performance by storing frequently accessed data and reducing the need to fetch it from the original source repeatedly.
Which caching strategy involves storing frequently accessed data in memory for quick retrieval?
- Browser caching
- Database caching
- In-memory caching
- Page caching
In-memory caching involves storing frequently accessed data in the system's memory, enabling quick retrieval and enhancing performance.
Which HTTP header is commonly used to control cache behavior in web browsers?
- Cache-Control
- Content-Encoding
- Expires
- Last-Modified
The Cache-Control header is commonly used to control cache behavior in web browsers by specifying directives for caching mechanisms in both requests and responses.
The __________ and __________ are two major parts of JVM memory structure.
- Cache, Register
- Heap, Stack
- Queue, Linked List
- Stack, Heap
The Heap and Stack are two major parts of the JVM memory structure. The Heap is used for dynamic memory allocation, while the Stack is used for static memory allocation and method call management.
_________ caching is a strategy where each cache stores a subset of the total data set, typically based on geographical location.
- Distributed
- Global
- Local
- Replicated
Local caching is a strategy where each cache stores a subset of the total data set, typically based on geographical location.
The process of replacing older cache entries with new ones is known as __________.
- Clear
- Eviction
- Purge
- Swap
The process of replacing older cache entries with new ones is known as Eviction.
In caching, __________ refers to the technique of dynamically adjusting the cache size based on current system load.
- Adaptive Caching
- Dynamic Caching
- Incremental Caching
- Static Caching
Adaptive Caching involves dynamically adjusting the cache size based on the current system load, allowing for optimal performance under varying conditions.
In the context of web applications, what does 'cache invalidation' refer to?
- Clearing the browser cache
- Encrypting cached data
- Refreshing cached data
- Storing data in cache
'Cache invalidation' in the context of web applications refers to the process of refreshing or clearing cached data to ensure that users receive the most up-to-date information from the server.