Tavant Technologies Interview Questions and Answers for Experienced

The content-type for attaching a file in a post request is 'multipart/form-data'.

• The content-type 'multipart/form-data' is used when submitting forms that contain files.

• It allows multiple parts to be combined into a single body, each part representing a different form field or file.

• The 'Content-Disposition' header is used to specify the name of the file being uploaded.

To navigate between different windows in Selenium code, use getWindowHandles() to get all window handles and switchTo() to switch between them.

• Use getWindowHandles() to get all window handles

• Use switchTo() to switch between windows

• Example: Set<String> windowHandles = driver.getWindowHandles(); driver.switchTo().window(windowHandles.toArray()[1]);

Abstract classes and interfaces are used in object-oriented programming to define common behavior and structure for classes.

• Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

• Classes can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes can have constructors, while interfaces cannot.

• Example: abstract class Animal { abs...read more

To improve performance of a Stored procedure, optimize query, use indexes, minimize data retrieval, and avoid cursors.

• Optimize query by using proper indexing

• Minimize data retrieval by fetching only required columns

• Avoid using cursors for looping through data

• Use SET NOCOUNT ON to stop the message indicating the number of rows affected by a Transact-SQL statement

Dependency Injection in ASP.NET Core is registered in ConfigureServices method of Startup class.

• Add services.AddSingleton(); for singleton lifetime

• Add services.AddScoped(); for scoped lifetime

• Add services.AddTransient(); for transient lifetime

Read-only variables can be modified by the program, while const variables cannot be changed.

• Read-only variables can be modified by the program during runtime, while const variables cannot be changed at all.

• Using 'const' keyword ensures that the value of the variable remains constant throughout the program.

• Read-only variables are typically used when the value needs to be initialized at runtime, while const variables are...read more

CopyOnWriteArrayList is a thread-safe variant of ArrayList where all mutative operations (add, set, remove, etc) are implemented by making a fresh copy of the underlying array.

• CopyOnWriteArrayList is part of the java.util.concurrent package in Java.

• It is used in scenarios where reads are far more common than writes, as it allows for high read concurrency without the need for synchronization.

• It is particularly useful in...read more

Java8 Stream provides a functional approach to processing collections of objects.

• Allows for functional-style operations on collections like map, filter, reduce

• Supports parallel processing for improved performance

• Lazy evaluation allows for efficient processing of large datasets

• Reduces boilerplate code and promotes cleaner, more concise code

• Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); na...read more

Public subnet allows internet access, while private subnet does not.

• Public subnet has a route to the internet gateway, while private subnet does not.

• Instances in public subnet can have public IP addresses, while instances in private subnet cannot.

• Public subnet is typically used for resources that need to be accessed from the internet, while private subnet is used for resources that should not be directly accessible fro...read more