VSAN Technology Trainee Network Engineer Interview Questions and Answers for Experienced

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. Tell me about yourself?
Ans. 
Aspiring Network Engineer with a passion for technology, eager to learn and contribute to innovative networking solutions.
• Educational Background: Recently graduated with a degree in Computer Networking, where I gained foundational knowledge in network protocols.

• Hands-on Experience: Completed an internship at XYZ Company, where I assisted in configuring routers and switches.

• Certifications: Currently pursuing Cisco Certi...read more
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Q2. What is important to you:the money or the work?
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I value the work itself more, as it leads to personal growth and job satisfaction, which ultimately enhances my career.
• Job satisfaction fuels motivation; for example, I thrive in problem-solving scenarios.

• Learning opportunities are crucial; I prefer roles that challenge my skills and knowledge.

• A fulfilling work environment fosters collaboration and innovation, which I find essential.

• While salary is important, I believe...read more
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Q3. What are your salary expectations?
Ans. 
I am looking for a competitive salary that reflects my skills and the industry standards for a Trainee Network Engineer.
• Research industry standards: For example, entry-level network engineers typically earn between $50,000 to $70,000 annually.

• Consider location: Salaries may vary based on the cost of living in different regions.

• Emphasize growth potential: I am open to starting at a lower salary with the understanding of...read more
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Round duration - 40 minutes
Round difficulty - Easy

Q1. 
Count Subsequences Problem Statement
Given an integer array ARR of size N, your task is to find the total number of subsequences in which all elements are equal.
Explanation:
A subsequence of an array i...read more
Ans. 
Count the total number of subsequences in which all elements are equal in an integer array.
• Iterate through the array and count the frequency of each element.

• Calculate the total number of subsequences for each element using the formula (frequency * (frequency + 1) / 2).

• Sum up the total number of subsequences for all elements and return the result modulo 10^9 + 7.
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