NTT Trainee Network Engineer Interview Questions and Answers

Q1. What is network and tell me about oso layers
Ans. 
A network is a group of interconnected devices that communicate with each other. OSI layers are a model for understanding network communication.
• OSI layers are a conceptual model for understanding how data is transmitted over a network.

• There are seven layers in the OSI model, each with a specific function.

• The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer communica...read more
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Q2. What is TCP?why it is important
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TCP is a protocol used for reliable transmission of data over networks.
• TCP stands for Transmission Control Protocol.

• It is a connection-oriented protocol that ensures reliable delivery of data packets.

• TCP uses a three-way handshake to establish a connection between two devices.

• It provides flow control, congestion control, and error detection and correction mechanisms.

• TCP is used for applications that require reliable da...read more
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Q3. Diffrence between ipv4 and ipv6
Ans. 
IPv4 uses 32-bit addresses while IPv6 uses 128-bit addresses.
• IPv4 allows for approximately 4.3 billion unique addresses while IPv6 allows for approximately 340 undecillion unique addresses.

• IPv6 includes built-in security features such as IPsec while IPv4 requires additional security protocols.

• IPv6 also includes features such as stateless address autoconfiguration and multicast addressing.

• IPv4 headers are 20 bytes long ...read more
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Q4. Explain diffrent types of network? Give practical examples
Ans. 
There are several types of networks, including LAN, WAN, MAN, WLAN, and VPN.
• LAN (Local Area Network) - a network that connects devices within a small area, such as a home or office.

• WAN (Wide Area Network) - a network that connects devices across a large geographical area, such as the internet.

• MAN (Metropolitan Area Network) - a network that connects devices within a city or metropolitan area.

• WLAN (Wireless Local Area N...read more
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Q1. Introduce yourself in brief
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Q2. Why you wanna switch your career to IT
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Q1. Tell me about yourself?
Ans. Good Afternoon sir/Mam First of all,thank you for giving me this opportunity to introduce myself My name is Navya jyothi. I am pursuing Degree with computer science from Krishna university in Sri Srinivasa Degree college vuyyuru. I had completed my Intermediate from Sri Srinivasa Junior college vuyyuru in the year 2019. I had completed my Schooling fromZpHigh school,tadanki in the year 2017. I belong to middle class f...read more
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Q2. What is important to you:the money or the work?
Ans. "I would say that work is more important.If we work and archive compant goals then obviously money would follow. I believe work to be prior".
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Q3. What are your salary expectations?
Ans. As I am fresher,I just accept the salary offered by you. So that i applying for this job.
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Q1. What is Virtual LAN?
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Q2. Difference between L2 &L3 switch?
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Q1. UST is good interviewer is not good
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Q2. Even we don't know the question atleast Interviewer required minimum patience .Iritating
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Q1. Basic question only OSPF
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Q2. Load balancer configuration
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Q1. OSPF, Load balancer
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Q2. Load balancing configuration
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Q1. Share you internship exp
Ans. 
I interned at a telecommunications company where I gained hands-on experience in configuring network devices and troubleshooting network issues.
• Configured routers and switches to optimize network performance

• Assisted in setting up VLANs and implementing security protocols

• Troubleshooted network connectivity issues for end users

• Participated in network infrastructure upgrades and maintenance
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Q2. All question based on the resume only
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Q3. Prepare whatever written in your resume
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Q1. What is DNS please explain
Ans. 
DNS stands for Domain Name System, which translates domain names to IP addresses.
• DNS is like a phone book for the internet, translating human-readable domain names (like google.com) to IP addresses (like 172.217.3.206).

• It helps users access websites by typing in easy-to-remember domain names instead of complex IP addresses.

• DNS servers store records of domain names and their corresponding IP addresses, allowing for effi...read more
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Q2. What is DHCP please explain
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DHCP stands for Dynamic Host Configuration Protocol, used to automatically assign IP addresses to devices on a network.
• DHCP eliminates the need for manual IP address configuration on each device

• It assigns IP addresses dynamically, allowing for efficient use of available addresses

• DHCP servers lease IP addresses to devices for a specific period of time

• DHCP also provides other network configuration information, such as su...read more
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Normal aptitude group discussion assignment case study

Coding test assignment one on one round

Q1. Technical vs no tech
Ans. 
Technical skills are essential for a Network Engineer, but soft skills are also important for effective communication and teamwork.
• Technical skills are necessary for configuring and troubleshooting network devices.

• Soft skills like communication, teamwork, and problem-solving are crucial for working effectively with colleagues and clients.

• Balancing technical expertise with interpersonal skills is key to success in the r...read more
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Q2. Dhcp vs dns gdp vs rdp frp vs 30nd
Ans. 
DHCP is a protocol used to assign IP addresses dynamically to devices on a network, while DNS is a system that translates domain names to IP addresses.
• DHCP assigns IP addresses to devices on a network dynamically

• DNS translates domain names to IP addresses

• RDP (Remote Desktop Protocol) allows users to remotely connect to a computer

• FRP (Fiberglass Reinforced Plastic) is a material used in construction

• 30nd does not seem to
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Q1. DHCP working principles
Ans. 
DHCP assigns IP addresses to devices on a network automatically
• DHCP server assigns IP addresses to devices on the network

• DHCP clients request IP addresses from the DHCP server

• DHCP uses a lease mechanism to manage IP address assignments

• DHCP reduces the administrative burden of manually assigning IP addresses
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Q2. DNS working principles
Ans. 
DNS is a system that translates domain names to IP addresses to locate resources on the internet.
• DNS resolves domain names to IP addresses

• DNS operates through a distributed database system

• DNS uses hierarchical structure with top-level domains like .com, .org, etc.

• DNS queries are resolved through recursive and iterative processes
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Q3. Scenario based question DHCP
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Q4. Spanning tree protocol
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