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

OOP is a programming paradigm based on objects, encapsulating data and behavior for modular and reusable code.

• Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).

• Inheritance: Mechanism to create a new class based on an existing class, inheriting its properties (e.g., a 'Dog' class inheriting from an 'Animal' class).

• Polymorphism: Ability to present the same interface for different data types (e.g., method overriding in subclasses)....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

AWS security can be managed through various tools and best practices to ensure data protection and compliance.

• Utilize IAM (Identity and Access Management) to control access to AWS resources

• Enable MFA (Multi-Factor Authentication) for added security

• Implement encryption for data at rest and in transit using services like AWS KMS and SSL/TLS

• Regularly monitor and audit AWS resources for any security vulnerabilities

• Use AWS CloudTrail for logging and tracking user activity

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.

The @Qualifier keyword in Java is used to disambiguate beans when multiple beans of the same type are present in the Spring application context.

• Used in Spring framework to specify which bean should be autowired when multiple beans of the same type are present

• Can be used on fields, constructor arguments, or method parameters

• Example: @Qualifier("beanName")