Black & White Business Solutions Interview Questions and Answers

Ingress is a Kubernetes resource that exposes HTTP and HTTPS routes from outside the cluster to services within the cluster.

• Ingress works by defining rules for routing external traffic to services based on hostnames or paths.

• Network policies can be created to control the traffic allowed to reach the services behind the Ingress.

• For example, a network policy can restrict traffic to a specific service to only come from a certain set of IP addresses.

In the last 6 months, we have closed 25 positions.

• We closed 10 positions in the IT department.

• We filled 5 positions in the marketing department.

• We hired 3 people for the finance team.

• We recruited 2 individuals for the HR department.

• We filled 1 position each for the operations, sales, and customer service teams.

Angular has a life cycle that includes initialization, change detection, content projection, and destruction.

• Angular components have a lifecycle hook that allows you to tap into key moments in the component's life cycle, such as OnInit, OnDestroy, etc.

• During the initialization phase, the component properties are initialized and the component is rendered on the screen.

• Change detection phase is triggered when Angular detects changes to the component's properties and updates the...read more

Docker cp command is used to copy files/folders between a container and the host machine.

• Used to copy files/folders from a container to the host machine or vice versa

• Syntax: docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH

• Example: docker cp mycontainer:/app/file.txt /host/path

Polymorphism is the ability of an object to take on many forms.

• Polymorphism allows objects of different classes to be treated as if they are of the same class.

• It can be achieved through method overloading or method overriding.

• Example: A parent class Animal can have child classes like Dog, Cat, and Cow. All of them can have a method called 'makeSound', but each child class can implement it differently.

• Polymorphism helps in achieving code reusability and flexibility.

A DevOps real-time project involves continuous integration, delivery, and deployment of software applications.

• Automating the build, test, and deployment process

• Implementing continuous monitoring and feedback

• Using tools like Jenkins, Docker, Kubernetes, and Ansible

• Collaborating with development and operations teams

• Ensuring high availability and scalability of applications