Cloud Developer Interview Questions and Answers

Friend function is a function that is not a member of a class but has access to its private and protected members. Function overloading is defining multiple functions with the same name but different parameters. Function overriding is redefining a base class function in a derived class. Runtime polymorphism is achieved through virtual functions and late binding, while compile time polymorphism is achieved through function overloading and templates.

• Friend function can access p...read more

Cloud computing refers to the delivery of computing services over the internet, while mobile computing refers to the use of mobile devices for computing tasks.

• Cloud computing involves accessing and using resources and services hosted on remote servers via the internet.

• Mobile computing focuses on the use of mobile devices like smartphones and tablets for computing tasks.

• Cloud computing allows for scalability, flexibility, and cost-effectiveness as resources can be easily provi...read more

Security groups control inbound/outbound traffic while NAT gateway allows instances in private subnets to access internet.

• Security groups act as a virtual firewall for instances and control inbound/outbound traffic based on rules defined by the user.

• NAT gateway allows instances in private subnets to access the internet while keeping them secure by not exposing their IP addresses to the internet.

• Security groups are associated with instances while NAT gateway is associated with...read more

A pem file contains both the private key and the certificate, while a key file only contains the private key.

• A pem file is used for SSL/TLS certificates

• A key file is used for SSH authentication

• Pem files can be converted to key files using OpenSSL

• Pem files are often used in web servers like Apache and Nginx

ControllerAdvice in Java is used to handle exceptions globally in Spring MVC applications.

• ControllerAdvice is an annotation used in Spring MVC to define global exception handlers.

• It allows you to centralize exception handling logic in one place.

• You can define methods annotated with @ExceptionHandler inside a ControllerAdvice class to handle specific exceptions.

• ControllerAdvice can also be used to define model attributes that are shared across multiple controllers.

Use a Set data structure to remove duplicates from a list of strings.

• Create a Set to store unique elements

• Iterate through the list and add each element to the Set

• Convert the Set back to a list to get the list without duplicates