BT Group Senior Executive Interview Questions and Answers

Q1. Explain the architecture of Kubernetes
Ans. 
Kubernetes is a container orchestration platform that manages and automates the deployment, scaling, and management of containerized applications.
• Kubernetes uses a master-slave architecture with a control plane and worker nodes.

• The control plane manages the overall state of the cluster and schedules workloads to the worker nodes.

• Worker nodes run the containers and communicate with the control plane to receive instructi...read more
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Q2. Give case study scenario where you implemented a app through any cloud provider (I preferred with azure)
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Q1. Explain the garbage collection process in java
Ans. 
Garbage collection is an automatic process of freeing up memory by removing unused objects.
• Java uses a mark-and-sweep algorithm for garbage collection

• Objects that are no longer referenced are marked for deletion

• The garbage collector runs periodically to remove the marked objects

• Finalize() method can be used to perform cleanup operations before an object is deleted
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Q2. Explain how did you implemented CI CD integration through Jenkins
Ans. 
Implemented CI/CD integration through Jenkins using pipeline as code approach
• Created a Jenkins pipeline job and defined stages for build, test, and deploy

• Integrated source code management tool like Git with Jenkins

• Used Jenkins plugins like Maven, Docker, and Kubernetes for building, packaging, and deploying the application

• Configured Jenkins to trigger the pipeline on every code commit or merge to the main branch

• Enabled...read more
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Q3. Describe how Azure hosted AKS works
Ans. 
Azure hosted AKS is a managed Kubernetes service that simplifies deployment and management of containerized applications.
• AKS stands for Azure Kubernetes Service

• AKS is a fully managed Kubernetes container orchestration service

• AKS automates the deployment, scaling, and management of containerized applications

• AKS integrates with other Azure services such as Azure Active Directory, Azure Monitor, and Azure Container Regist
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Q1. What are networking devices
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Networking devices are hardware devices that facilitate communication and data transfer between different devices in a network.
• Networking devices include routers, switches, hubs, modems, and firewalls.

• Routers are used to connect multiple networks together and direct traffic between them.

• Switches are used to connect devices within a network and direct traffic between them.

• Hubs are used to connect multiple devices within...read more
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Q2. Few questions on OSI model
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Q3. Routing protocaols and their merits demerits
Ans. 
Routing protocols are used to determine the best path for data to travel between networks.
• There are two types of routing protocols: distance-vector and link-state.

• Distance-vector protocols are simpler but less efficient than link-state protocols.

• Examples of distance-vector protocols include RIP and IGRP.

• Examples of link-state protocols include OSPF and IS-IS.

• Routing protocols have different metrics to determine the bes...read more
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Codings were asked to write in java

MCQs of Reasoning, Aptitude and English

2 coding questions from Data structures. Can solve using C, python, java....etc

Q1. Started with Introduction. Questions from OOPS, OS, Networks, resume and then coding.
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Q1. Introduction and projects
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Q1. Casual Interview and Location details.
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Leetcode question top 75

Q1. What is Dhcp server .plase explain
Ans. 
DHCP server is a network server that automatically assigns IP addresses and other network configuration settings to devices on a network.
• DHCP stands for Dynamic Host Configuration Protocol.

• It eliminates the need for manual IP address configuration on each device.

• DHCP server leases IP addresses to devices for a specific period of time.

• It also provides other network configuration information like subnet mask, default gat...read more
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Q2. What is l3 layer protocal
Ans. 
Layer 3 protocol is responsible for routing and forwarding data packets in a network.
• Layer 3 protocol operates at the network layer of the OSI model.

• It includes protocols like IP (Internet Protocol) and ICMP (Internet Control Message Protocol).

• Layer 3 protocols use logical addressing to route packets between different networks.

• They determine the best path for data packets to reach their destination.

• Examples of Layer 3
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Aptitude, questions were asked in the interview

Q1. C++ data structurea python
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Basic mathematics and coding MCQ questions

Q1. Degree courses related questions like OS, DBMS and networking.
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Q2. Focused towards projects
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