BT E Serv Software Engineer Interview Questions and Answers

Q1. My expertise are in golang. And all the questions were straight forward around golang.
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Q2. What is concurrency. How to check performance of applications. How to handle concurrency. How many no of goroutines can be created and so on.
Ans. 
Concurrency is the ability of a system to run multiple tasks simultaneously. Performance of applications can be checked using profiling tools. Concurrency can be handled using synchronization techniques like mutexes and channels.
• Concurrency allows multiple tasks to run concurrently, improving performance and responsiveness.

• Performance of applications can be checked using profiling tools like Go's built-in 'pprof' packa...read more
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Q1. How to make sure there are no vulnerabilities. What engineering principles you follow.
Ans. 
To ensure no vulnerabilities, follow secure coding practices, conduct regular security audits, use encryption, and stay updated on security threats.
• Follow secure coding practices such as input validation, output encoding, and parameterized queries.

• Conduct regular security audits to identify and address vulnerabilities in the code.

• Use encryption to protect sensitive data in transit and at rest.

• Stay updated on security t...read more
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Q1. Technology related work
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Q2. Team and technology related Fault
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Q3. Telecom 2G 3G 4G nokia equipment Cisco equipment broadband equipment fiber management OTDR
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Q4. Project and equipment
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Q5. Communication electronics equipment hardware and software
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Q1. Communication will be checked
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Q2. Experience in relevant filed
Ans. 
I have 5 years of experience in project engineering in the construction industry.
• Managed multiple construction projects simultaneously

• Coordinated with architects, contractors, and suppliers

• Created and maintained project schedules

• Ensured compliance with safety regulations

• Resolved project issues and conflicts

• Completed projects within budget and on schedule
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Q1. Construction and work experience
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Construction and relevant questions

Q1. Regarding java and feature of java8
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Q2. Regarding spring boot
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Q1. Regarding micro service
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Q2. Regarding cloud
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Normal mathematics and some technical

Q1. Mostly questions from switching and RaN tolls ,LSMR
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Q2. Function of Router. Process of switch configuration
Ans. 
Router functions to route data packets between different networks. Switch configuration involves setting up ports, VLANs, and security settings.
• Router functions include routing data packets between networks, determining the best path for data transmission, and providing network security.

• Switch configuration involves setting up ports, VLANs (Virtual Local Area Networks), and security settings to control traffic flow wit...read more
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Q1. What is VPN? How it works?
Ans. 
VPN stands for Virtual Private Network. It allows users to securely access a private network over a public network.
• VPN creates a secure and encrypted connection between the user's device and the private network

• It masks the user's IP address and encrypts data to ensure privacy and security

• Common types of VPN include SSL VPN, IPsec VPN, and PPTP VPN

• VPN can be used to access company networks remotely, bypass geo-restricti...read more
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Q2. What is BGP and OSPF?
Ans. 
BGP (Border Gateway Protocol) is an exterior gateway protocol used to route traffic between different autonomous systems. OSPF (Open Shortest Path First) is an interior gateway protocol used to route traffic within a single autonomous system.
• BGP is used to connect different autonomous systems and make routing decisions based on network policies.

• OSPF is used within a single autonomous system to determine the best path f...read more
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