Carrier Design Engineer Interview Questions and Answers

Q1. Basic networking theory like arp, ping, vlans, subnetting
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Q2. Switching scenarios mostly related to STP
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Q3. OSI layer based questions. For example, which layer deals with congestion control.
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Q4. Basics of routing. Ospf n bgp scenarios
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Q5. One of the challenging cases worked on
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Developed a solution for optimizing a complex algorithm for a client in the finance industry
• Client had a large dataset that needed to be processed quickly

• Implemented parallel processing to speed up the algorithm

• Optimized the code to reduce memory usage

• Collaborated with the client to fine-tune the algorithm for their specific needs
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Q6. Scenarios questions to check how you would approach a problem and work towards resolution. Like what all information would you ask from the customer to understand the issue and how you would make use of it...read more
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Q1. What is circuit breaker pattern in cloud platforms?
Ans. 
Circuit breaker pattern is a design pattern used in cloud platforms to prevent cascading failures.
• It is used to detect failures and prevent them from causing further damage

• It works by temporarily blocking requests to a service that is experiencing issues

• Once the service is back up, the circuit breaker allows requests to resume

• Examples include Netflix's Hystrix and AWS's Circuit Breaker
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Q2. What are azure functions? What are its limitations? How to handle long running background processes?
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Azure Functions is a serverless compute service that enables you to run event-triggered code without having to manage infrastructure.
• Azure Functions can be used to build serverless applications and microservices.

• It supports multiple programming languages such as C#, Java, JavaScript, Python, and PowerShell.

• Limitations include a maximum execution time of 10 minutes, limited memory and CPU resources, and a cold start del...read more
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Q3. How are azure functions different from worker processes?
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Azure functions are event-driven, serverless compute solutions while worker processes are long-running processes.
• Azure functions are triggered by events such as HTTP requests, messages in a queue, or changes in a database.

• Worker processes are long-running processes that perform a specific task continuously.

• Azure functions are serverless, meaning that the infrastructure is managed by Azure.

• Worker processes require a ser...read more
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Q4. What do you use abstract classes for?
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Abstract classes are used to provide a common interface for its subclasses.
• Abstract classes cannot be instantiated, only extended.

• They can contain abstract and non-abstract methods.

• They are useful for creating a hierarchy of classes with shared methods and properties.

• They can also be used to enforce certain behaviors in subclasses.

• Example: Animal is an abstract class with abstract methods like eat() and non-abstract me...read more
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Q5. What is throttling?
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Throttling is the process of limiting the amount of data or requests that can be sent or received within a certain period of time.
• Throttling is used to prevent overload on servers or networks.

• It can be implemented through software or hardware.

• Examples include API rate limiting and internet service providers limiting bandwidth.

• Throttling can also be used to intentionally slow down certain processes or devices to conserv
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Q6. What is service discovery? what tool we have for that in azure platform?
Ans. 
Service discovery is the process of automatically locating services in a network. Azure provides Azure Service Fabric for service discovery.
• Service discovery helps in locating services in a network without hardcoding their addresses.

• Azure Service Fabric provides a built-in service discovery mechanism.

• Service Fabric uses naming conventions and DNS resolution to discover services.

• Service Fabric also provides APIs for ser...read more
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Q7. What is ambassador pattern in kubernetes?
Ans. 
Ambassador pattern is a Kubernetes design pattern that allows for external access to services.
• It involves using a sidecar container to proxy requests from outside the cluster to the service.

• The sidecar container can handle tasks such as authentication and load balancing.

• It allows for decoupling of the service from the external access mechanism.

• Examples include the use of Ambassador and Istio as implementations of the p
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Q8. Data design patterns in mongo db with record references.
Ans. 
MongoDB supports various data design patterns for record references.
• MongoDB supports embedding documents within other documents.

• MongoDB also supports referencing documents from other collections.

• The choice between embedding and referencing depends on the data access patterns.

• Embedding is preferred for one-to-one and one-to-many relationships.

• Referencing is preferred for many-to-many relationships.

• MongoDB also supports
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Q9. What are different data storage patterns in microservices? You should explain per service db, shared db, SAGA, event sourcing patterns.
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T cods in SAP in logistics tool

Q1. Regarding work experience
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Q2. On process, in given role.
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Q3. Previous experience s
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