Isc Projects Interview Questions and Answers

Functional interface is an interface with only one abstract method. Benefits include lambda expressions and improved code readability.

• Functional interface allows for the use of lambda expressions, which can simplify code and improve readability.

• It also enables the use of method references, which can make code more concise.

• Functional interfaces are used extensively in Java 8's Stream API.

• Transaction uses include ensuring data consistency and atomicity.

• Propagation levels includ...read more

Different isolation levels in transactions and their purpose.

• Isolation levels determine how transactions interact with each other.

• READ UNCOMMITTED: Allows dirty reads, can cause phantom reads.

• READ COMMITTED: Prevents dirty reads, but allows non-repeatable reads.

• REPEATABLE READ: Prevents dirty and non-repeatable reads, but allows phantom reads.

• SERIALIZABLE: Prevents all three types of reads, but can cause deadlock.

• Purpose is to balance data consistency and concurrency.

Functional interface is an interface with only one abstract method. Load balancing is used to distribute workload.

• Functional interface is used in lambda expressions in Java.

• Load balancing is used to distribute workload across multiple servers.

• Server side load balancing is done by a load balancer that sits between the client and server.

• Client side load balancing is done by the client application itself.

• Load balancing improves performance, availability, and scalability of appli...read more

The question is unclear and seems unrelated to software development.

• Ask for clarification on the question.

• Transactional levels and propagation labels are related to database transactions.

• Substring duplicates counts can be solved using string manipulation.

• It is unclear how these two topics are related.

To estimate total cars in Chennai, consider population, vehicle ownership, public transport usage, and road infrastructure.

• Research population of Chennai

• Estimate vehicle ownership rate

• Consider public transport usage

• Assess road infrastructure

• Use statistical models to arrive at an estimate

Java 8 introduced new features for working with collections, such as streams and lambda expressions.

• Java 8 introduced the Stream API for processing collections in a functional style.

• Lambda expressions can be used to iterate over collections and perform operations on elements.

• The Collectors class provides utility methods for collecting elements into a new collection.

• Parallel streams can be used to process collections concurrently for improved performance.

Debouncing in React is a technique used to limit the number of times a function is called in a specified time frame.

• Debouncing helps in improving performance by reducing unnecessary function calls.

• It is commonly used in scenarios like search bars where we want to wait for user to finish typing before making an API call.

• Example: Using lodash debounce function to delay API call until user stops typing.