Tesco Interview Questions, Process, and Tips

Design of a Website like amazon com

Q1. Why EVPN is the control plane in VX Lan?
Ans. 
EVPN is used as the control plane in VXLAN to provide efficient and scalable layer 2 and layer 3 connectivity in data center networks.
• EVPN allows for dynamic MAC address learning and distribution across the VXLAN network.

• EVPN provides a scalable solution for layer 2 and layer 3 connectivity in large data center networks.

• EVPN supports multi-tenancy and allows for efficient traffic forwarding in VXLAN environments.

• EVPN s...read more
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Q2. Explain on evpn why it’s important in vxlan
Ans. 
EVPN is important in VXLAN for efficient Layer 2 and Layer 3 connectivity in data center networks.
• EVPN provides a scalable control plane for VXLAN overlays

• It enables efficient Layer 2 and Layer 3 connectivity between endpoints in a data center network

• EVPN allows for multi-tenancy and seamless VM mobility within the data center

• It simplifies network provisioning and management in large-scale environments
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Q3. What are the BGP attributes?
Ans. 
BGP attributes are characteristics used to make routing decisions in Border Gateway Protocol.
• BGP attributes include AS Path, Next Hop, Local Preference, MED, Origin, and Weight.

• AS Path is a list of AS numbers that the route has traversed.

• Next Hop is the IP address of the next router to reach the destination.

• Local Preference is used to influence outbound traffic.

• MED (Multi-Exit Discriminator) is used to influence inboun...read more
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Q4. Talk about all the BGP attributes and their use
Ans. 
BGP attributes are used to influence routing decisions in Border Gateway Protocol.
• BGP attributes include AS_PATH, NEXT_HOP, LOCAL_PREF, MED, etc.

• AS_PATH is used to prevent routing loops and determine the best path to a destination.

• NEXT_HOP specifies the next router to reach a particular destination.

• LOCAL_PREF is used to influence outbound traffic from a BGP router.

• MED (Multi-Exit Discriminator) is used to influence inb...read more
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Q1. Didn’t qualify till this round
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Q2. I didn’t qualify till this round.
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DSA & Algorithms, Java questions

Q1. Design Cab Booking System
Ans. 
Design a cab booking system for users to book rides with drivers.
• Create a database to store user information, driver information, and ride details.

• Implement a user interface for users to book rides, view ride history, and track ongoing rides.

• Develop algorithms for matching users with available drivers based on location and availability.

• Include features like fare estimation, real-time tracking, and payment options.

• Ensur...read more
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Q1. Design Twitter High level
Ans. 
Design a high level architecture for Twitter
• Use microservices architecture for scalability and maintainability

• Implement a distributed system for handling high traffic

• Use a NoSQL database like MongoDB for storing tweets and user data

• Implement a caching layer using Redis for faster retrieval of tweets

• Use a message queue like Kafka for handling real-time notifications
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Q1. Accounting questions Accrual, Contingent liability, prepayment etc
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Q2. Previous experience
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