Railtel Corporation Of India Wifi Network Engineer Interview Questions and Answers

Q1. Basics Electronics questions
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Q2. What is conductor, capacitor, resistor..
Ans. 
Conductor, capacitor, and resistor are basic components used in electronic circuits.
• Conductor: Allows the flow of electric current. Example: Copper wire.

• Capacitor: Stores and releases electrical energy. Example: Ceramic capacitor.

• Resistor: Limits the flow of electric current. Example: Carbon film resistor.
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Q1. On which layer are TCP adn UDP?
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TCP is on the transport layer (Layer 4) and UDP is also on the transport layer (Layer 4).
• TCP is a connection-oriented protocol that provides reliable data delivery. It operates on the transport layer (Layer 4) of the OSI model.

• UDP is a connectionless protocol that provides faster data transmission but without guaranteed delivery. It also operates on the transport layer (Layer 4) of the OSI model.
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Q2. Tell me about OSI layer
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The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers.
• The OSI model helps in understanding how data is transmitted over a network.

• It starts from the physical layer (Layer 1) which deals with the actual physical connection between devices.

• Each layer has specific functions and protocols, such as TCP/I...read more
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It contained networking questions

Q1. What is router &switch
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A router is a networking device that forwards data packets between computer networks, while a switch is a networking device that connects devices within a network.
• Router operates at the network layer of the OSI model

• Switch operates at the data link layer of the OSI model

• Router connects multiple networks together

• Switch connects devices within the same network

• Router uses IP addresses to route traffic

• Switch uses MAC addre
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Q2. How is routing done
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Routing is the process of selecting the best path for network traffic to reach its destination.
• Routing involves determining the optimal path for data packets to travel from the source to the destination.

• Routers use routing tables to make decisions on how to forward packets based on destination IP addresses.

• Routing protocols like OSPF, BGP, and EIGRP are used to exchange routing information between routers.

• Static routin...read more
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Q1. Normal question
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Q1. Profile question
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Q1. Profile question
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Q1. Salary discussion
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Q2. Salary discussion
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Q1. Offere letter release
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Q1. Technical questions such as VLAN, Routing and Firewalls
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Q1. How the team collaboration to improve business.
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Q1. Company details and salary negotiation.
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Aptitude questions from various topics

Two coding questions easy and medium

Q1. 1 hr technical from your resume and problem solving
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Q2. 3 sum problem question
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Q3. Basics of networking
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Q1. Explain why you come into software role
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Q1. Introduction of Candidate.
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Q2. Basic and advance Skill.
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Q3. Qualification for the role and can fit it in with the team and company culture.
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Q1. Technical question regarding Enterprise voice?
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Q2. Multiple protocols and port numbers. Voice redirection using SBCs and routers.
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Q1. Salary expectations and CTC discussion.
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Q2. Required documentations of qualification and others. Offer letter offered.
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