Zingo Hotels Interview Questions and Answers

Load balancing is a technique used to distribute workload across multiple servers to improve performance and availability.

• There are different types of load balancing such as Round Robin, Least Connection, IP Hash, and Weighted Round Robin.

• Round Robin distributes requests evenly across servers in a cyclic manner.

• Least Connection assigns requests to the server with the least active connections.

• IP Hash uses the client's IP address to determine which server to send the request to...read more

kill terminates a process, while kill -9 forcefully terminates a process.

• kill sends a termination signal to a process, allowing it to gracefully exit.

• kill -9 sends a SIGKILL signal to a process, forcing it to immediately terminate.

• kill -9 should be used as a last resort, as it does not allow the process to clean up resources or save data.

• kill -9 is often used when a process is unresponsive or stuck in an infinite loop.

• Example: 'kill 1234' will send a termination signal to pro...read more

Ref and out are both used to pass parameters by reference in C#. Ref is bidirectional while out is unidirectional.

• Ref and out are used to pass parameters by reference instead of by value

• Ref is used for both input and output parameters while out is only used for output parameters

• Ref requires the variable to be initialized before passing while out does not

• Example: void MyMethod(ref int x) { x = x + 1; }

• Example: void MyMethod(out int x) { x = 1; }

Servers and SQL are essential components of modern computing infrastructure.

• A server is a computer program or device that provides functionality for other programs or devices, called clients.

• SQL (Structured Query Language) is a programming language used to manage and manipulate relational databases.

• Servers and SQL are often used together to provide web-based applications and services.

• Examples of popular server software include Apache, Nginx, and Microsoft IIS.

• Examples of popu...read more

Active Directory is a directory service developed by Microsoft for Windows domain networks.

• Centralized database for managing network resources

• Stores information about users, computers, and other network objects

• Allows administrators to manage permissions and access control

• Supports single sign-on for users to access multiple resources with one login