10+ Active India Holidays Interview Questions and Answers

In ASP.NET Core MVC, multiple values can be passed from a controller to a view using ViewData, ViewBag, or a strongly-typed model.

• Use ViewData: Pass values as key-value pairs. Example: ViewData['Message'] = 'Hello World!';

• Use ViewBag: Similar to ViewData but uses dynamic properties. Example: ViewBag.Title = 'My Page';

• Use a ViewModel: Create a class to hold multiple properties. Example: public class MyViewModel { public string Name; public int Age; }

• Return a Tuple: Return mult...read more

LINQ queries allow for efficient data manipulation and retrieval using left, right, and inner joins in C#.

• Inner Join: Combines records from two collections where there is a match. Example: var result = from a in collectionA join b in collectionB on a.Id equals b.AId select new { a, b };

• Left Join: Returns all records from the left collection and matched records from the right. Example: var result = from a in collectionA join b in collectionB on a.Id equals b.AId into temp from...read more

Treemap is a sorted map based on natural ordering of keys, while hashmap is an unordered map.

• Treemap stores key-value pairs in sorted order based on the natural ordering of keys.

• Hashmap does not guarantee any specific order of key-value pairs.

• Treemap uses a red-black tree for storage and retrieval, while hashmap uses hash table.

• Treemap is slower than hashmap for most operations due to the sorting overhead.

• Example: TreeMap treeMap = new TreeMap<>(); HashMap hashMap = new HashM...read more

HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.

• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• Retrieving a value involves hashing the key to find the correct index and then traversin...read more

Stream API in Java 8 provides a functional approach to processing collections of objects.

• Stream API allows for processing collections of objects in a functional style.

• It supports operations like filter, map, reduce, and collect.

• Streams can be sequential or parallel, allowing for efficient processing of large datasets.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);

SDLC stands for Software Development Life Cycle. There are different types including Waterfall, Agile, Iterative, Spiral, V-Model, etc.

• Waterfall: Sequential approach with distinct phases

• Agile: Iterative and incremental development

• Iterative: Repeating cycles of development

• Spiral: Risk-driven approach with multiple iterations

• V-Model: Corresponding testing phase for each development phase