Experis IT 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
Ans. 
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. What is osi layer
Ans. 
OSI (Open Systems Interconnection) layer is a conceptual model that describes the communication functions of a telecommunication or computing system.
• OSI model has 7 layers, each with a specific function

• Each layer communicates with the layer above and below it

• Layers are numbered from 1 to 7, with 1 being the physical layer and 7 being the application layer

• Examples of layers include physical layer, data link layer, netwo...read more
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Q1. Tell me about yourself
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Round duration - 140 minutes
Round difficulty - Medium

Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.

Q1. 
Sum of Two Numbers Represented as Arrays
Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...read more
Ans. 
Given two numbers represented as arrays, calculate their sum and return the result as an array.
• Iterate through the arrays from right to left, adding digits and carrying over if necessary

• Handle cases where one array is longer than the other by considering the remaining digits

• Ensure the final sum array does not have any leading zeros
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Round duration - 20 minutes
Round difficulty - Easy

The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.

Round duration - 8 minutes
Round difficulty - Easy

This round was conducted right after finishing and clearing the technical round at the same place and on the same day.

Q1. Solid principles in c#
Ans. 
Solid principles are a set of design principles for writing maintainable and scalable code in C#.
• Single Responsibility Principle (SRP) - a class should have only one reason to change

• Open/Closed Principle (OCP) - a class should be open for extension but closed for modification

• Liskov Substitution Principle (LSP) - derived classes should be substitutable for their base classes

• Interface Segregation Principle (ISP) - client...read more
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