BT E Serv Design Engineer Interview Questions and Answers

Q1. Communication any other thing
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Math, science any other

Q1. Fiber ko kitne digri me kata jata h
Ans. 90 digri me
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Q2. Agar fiber ko bend kare to power loss hogi ya nahi
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Bending a fiber can lead to power loss due to increased attenuation and changes in the light path.
• Bending a fiber optic cable can cause light to escape, leading to signal loss.

• Tighter bends result in higher attenuation, which can degrade signal quality.

• For example, a bend radius smaller than the manufacturer's specification can significantly increase loss.

• In telecommunications, maintaining proper bend radius is crucial...read more
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Q1. Optical power kitni rhni chaiye ik ache network ke liye
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Optical power in a network should be optimized for performance, typically between -10 dBm to -20 dBm for effective signal transmission.
• Optical power levels between -10 dBm to -20 dBm are ideal for most fiber optic networks.

• Higher power levels can lead to signal distortion and reduced network performance.

• For long-distance connections, power levels may need to be adjusted to maintain signal integrity.

• Example: In a metrop...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

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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Q1. What is the Network
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A network is a collection of interconnected devices that communicate and share resources.
• Networks can be wired (e.g., Ethernet) or wireless (e.g., Wi-Fi).

• They enable resource sharing, such as printers and files.

• Common types include LAN (Local Area Network) and WAN (Wide Area Network).

• Protocols like TCP/IP govern data transmission across networks.

• Examples include home networks connecting computers and smartphones.
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Q2. What is the difference between TCP and UDP
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TCP is connection-oriented and reliable, while UDP is connectionless and faster but less reliable.
• TCP establishes a connection before data transfer, ensuring reliability.

• UDP sends data without establishing a connection, making it faster but less reliable.

• TCP guarantees data delivery and order, while UDP does not guarantee delivery or order.

• Examples: TCP is used for web browsing (HTTP), while UDP is used for video strea...read more
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Q3. What is the purpose VLAN
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A VLAN (Virtual Local Area Network) segments a physical network into multiple logical networks for improved management and security.
• Improves network performance by reducing broadcast domains.

• Enhances security by isolating sensitive data traffic (e.g., finance department).

• Facilitates easier network management and organization (e.g., grouping users by department).

• Allows for better resource allocation and traffic prioriti...read more
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Q4. How does it switch configuration
Ans. 
Switch configuration involves setting up network switches for optimal performance and security using various methods.
• Access the switch via console, SSH, or web interface.

• Use command-line interface (CLI) commands to configure settings.

• Set up VLANs to segment network traffic (e.g., 'vlan 10' for a specific VLAN).

• Configure port settings, such as speed and duplex (e.g., 'interface gig0/1' followed by 'speed 1000').

• Implemen...read more
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