Nokia Senior Technical Specialist Interview Questions, Process, and Tips

Q1. How are micro services different from monolithic model?
Ans. 
Microservices are smaller, independent services that work together, while monolithic model is a single, large application.
• Microservices are smaller, independent services that can be developed, deployed, and scaled independently.

• Monolithic model is a single, large application where all components are tightly coupled.

• Microservices communicate with each other through APIs, while monolithic applications use in-process comm...read more
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Q2. Inter service communication in a distributed system
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Inter service communication in a distributed system involves communication between different services to achieve a common goal.
• Use of APIs for communication between services

• Message queues for asynchronous communication

• Service discovery for locating and connecting to services

• Implementing protocols like REST, gRPC, or MQTT

• Handling communication failures and retries
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Q3. Explain pub sub model
Ans. 
Pub sub model is a messaging pattern where senders (publishers) of messages do not program the messages to be sent directly to specific receivers (subscribers).
• Publishers send messages to a central topic or channel without specifying the recipients

• Subscribers subscribe to the topics or channels they are interested in and receive messages from there

• Decouples the sender and receiver, allowing for more flexibility and sca...read more
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Implement synchronisation between Go routines

Q1. How Kubernetes handles scaling?
Ans. 
Kubernetes handles scaling by automatically adjusting the number of pods based on resource usage.
• Kubernetes uses Horizontal Pod Autoscaler (HPA) to automatically scale the number of pods based on CPU or memory usage.

• HPA adjusts the number of replicas of a Deployment, ReplicaSet, or StatefulSet.

• Kubernetes also supports Vertical Pod Autoscaler (VPA) for adjusting resource requests and limits of pods based on resource usa...read more
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Q2. Difference between containers and pods
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Containers are a lightweight, standalone executable package that includes everything needed to run a piece of software, while pods are a group of one or more containers that share resources and are scheduled together on the same host.
• Containers are individual units of software that package up code and dependencies, while pods are a higher-level concept in Kubernetes that can contain one or more containers.

• Containers ar...read more
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Q1. Difficult situations handled in my career
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Q2. Why are you quitting your previous job?
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Q1. Explain how you automate using Robot framework
Ans. 
I automate using Robot framework by creating test cases in a keyword-driven format and utilizing built-in libraries and custom keywords.
• Create test cases using Robot framework syntax

• Utilize built-in libraries for common tasks

• Develop custom keywords for specific automation needs

• Leverage variables and data-driven testing

• Integrate with external tools and APIs for comprehensive automation
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Q2. What was the toughest problem you identified and prevented from happening in field?
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Q1. Why did you choose Nokia?
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Q2. Why did you choose this domain for applying?
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