IT Technical Support Engineer

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20+ IT Technical Support Engineer Interview Questions and Answers

Updated 2 Mar 2025

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Q1. What’s the most effective way to gather user and system requirements?

Ans.

The most effective way to gather user and system requirements is through thorough communication and collaboration.

  • Schedule meetings with stakeholders to discuss needs and expectations

  • Use surveys and questionnaires to gather feedback from users

  • Analyze existing systems and processes to identify gaps and improvements

  • Create prototypes or mockups to visualize requirements

  • Document all requirements clearly and concisely

Q2. What is firewall What is DHCP with working Cloud computing Networking Hardware configuration Os installation Management of all IT asset

Ans.

Firewall is a security system that monitors and controls incoming and outgoing network traffic.

  • Firewall can be hardware or software-based

  • It can be configured to block or allow traffic based on predefined rules

  • Firewalls can also be used to create virtual private networks (VPNs)

  • DHCP is a protocol used to automatically assign IP addresses to devices on a network

  • Cloud computing refers to the delivery of computing services over the internet

  • Networking involves the design, implement...read more

Q3. What is sql joins and normalization

Ans.

SQL joins are used to combine rows from two or more tables based on a related column, while normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.

  • SQL joins are used to retrieve data from multiple tables based on a related column

  • Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity

  • Types of SQL joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

  • Normalizatio...read more

Q4. How do you troubleshoot a monitor that is not working?

Ans.

To troubleshoot a monitor that is not working, check the power connection, cables, and settings. Test with another device and update drivers if needed.

  • Check if the monitor is properly connected to the power source and turned on

  • Inspect the cables for any damage or loose connections

  • Ensure the correct input source is selected on the monitor

  • Try connecting the monitor to another device to determine if the issue is with the monitor or the computer

  • Update or reinstall the graphics dr...read more

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Q5. What is server ,what is hardware,and networking

Ans.

A server is a computer system that provides services to other computers or devices on a network. Hardware refers to the physical components of a computer system. Networking is the process of connecting multiple devices together to share resources.

  • A server is designed to provide specific services to other devices on a network, such as file sharing, email, or web hosting.

  • Hardware includes components such as the CPU, RAM, hard drive, and motherboard.

  • Networking involves connectin...read more

Q6. Four oops pillars and its code also.

Ans.

The four pillars of object-oriented programming are encapsulation, inheritance, polymorphism, and abstraction.

  • Encapsulation: Bundling data and methods that operate on the data into a single unit (class). Example: private variables in a class.

  • Inheritance: Creating new classes based on existing classes, inheriting their attributes and methods. Example: a 'Dog' class inheriting from an 'Animal' class.

  • Polymorphism: The ability for objects of different classes to respond to the sa...read more

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Q7. How to join domain ?

Ans.

To join a domain, go to System Properties, click on Change settings, select the Computer Name tab, and click on the Change button.

  • Open System Properties

  • Click on Change settings

  • Select the Computer Name tab

  • Click on the Change button

  • Enter the domain name and credentials

  • Restart the computer

Q8. what are difference between cat 6 and cat6e

Ans.

Cat6e has improved performance and crosstalk compared to Cat6.

  • Cat6e has stricter specifications for crosstalk and system noise compared to Cat6.

  • Cat6e can support higher bandwidth frequencies up to 250 MHz, while Cat6 supports up to 250 MHz.

  • Cat6e cables are typically more expensive than Cat6 cables due to the improved performance.

  • Cat6e is backward compatible with Cat6 and Cat5e equipment.

Q9. What is DHCP and DNS?

Ans.

DHCP assigns IP addresses to devices on a network. DNS translates domain names into IP addresses.

  • DHCP stands for Dynamic Host Configuration Protocol

  • It automatically assigns IP addresses to devices on a network

  • DNS stands for Domain Name System

  • It translates domain names into IP addresses

  • DNS is used to locate websites and other resources on the internet

Q10. What is DHCP than use for device

Ans.

DHCP is a network protocol that automatically assigns IP addresses to devices on a network.

  • DHCP stands for Dynamic Host Configuration Protocol

  • It allows devices to obtain IP addresses and other network configuration information automatically

  • DHCP servers assign IP addresses to devices within a network

  • Helps in reducing the manual configuration of IP addresses on each device

  • Commonly used in home networks, corporate networks, and internet service providers

Q11. What is latest windows than version

Ans.

The latest version of Windows is Windows 11.

  • Windows 11 is the latest version of the Windows operating system.

  • It was officially released on October 5, 2021.

  • Windows 11 introduces a new design, improved performance, and new features like Snap Layouts and Snap Groups.

Q12. What is active directory?

Ans.

Active Directory is a directory service developed by Microsoft for Windows domain networks.

  • It stores information about network resources such as computers, users, and groups.

  • It provides authentication and authorization services for Windows-based computers.

  • It allows administrators to manage network resources from a central location.

  • It uses a hierarchical structure of domains, trees, and forests to organize network resources.

  • It supports group policies that can be used to enforc...read more

Frequently asked in, ,

Q13. How many ticket tool you knows

Ans.

I am proficient in using multiple ticketing tools such as ServiceNow, JIRA, and Zendesk.

  • ServiceNow

  • JIRA

  • Zendesk

Q14. What is web hosting

Ans.

Web hosting is a service that allows individuals and organizations to make their website accessible via the World Wide Web.

  • Web hosting providers store website files on servers

  • Websites are hosted on servers connected to the internet

  • Different types of web hosting include shared, VPS, dedicated, and cloud hosting

Q15. what is Lan and speed of sfp

Ans.

LAN stands for Local Area Network, while SFP refers to Small Form-factor Pluggable. The speed of SFP can vary depending on the type.

  • LAN is a network that connects computers and devices in a limited area, such as a home, office, or campus.

  • SFP is a compact, hot-pluggable transceiver used for both telecommunication and data communications applications.

  • The speed of SFP modules can range from 100 Mbps to 100 Gbps, depending on the type and technology used.

  • For example, a common SFP...read more

Q16. Diffence between windows 10 windows 11

Ans.

Windows 11 is the newer version of Windows operating system compared to Windows 10.

  • Windows 11 has a redesigned Start menu and taskbar.

  • Windows 11 offers better support for virtual desktops.

  • Windows 11 has improved gaming features like DirectStorage and Auto HDR.

  • Windows 11 requires TPM 2.0 for installation, which is not mandatory for Windows 10.

  • Windows 11 has a new Snap Layouts feature for better multitasking.

Q17. Unable to send/receive emails in outlook

Ans.

Check internet connection, email server settings, and email account credentials.

  • Check internet connection to ensure connectivity

  • Verify email server settings in Outlook

  • Confirm email account credentials are correct

  • Check for any email server issues or outages

  • Restart Outlook and computer

Q18. Education qualification currently

Ans.

Bachelor's degree in Computer Science

  • Bachelor's degree in Computer Science

  • Relevant certifications like CompTIA A+ or Microsoft Certified IT Professional

  • Continuing education courses in IT

Q19. Explain how dns works

Ans.

DNS translates domain names to IP addresses to locate resources on the internet.

  • DNS stands for Domain Name System

  • When a user enters a domain name in a web browser, the DNS server translates it to an IP address

  • DNS uses a hierarchical system with multiple levels of servers to efficiently resolve domain names

  • Examples of DNS servers include Google DNS (8.8.8.8) and OpenDNS (208.67.222.222)

Q20. How to share printer

Ans.

To share a printer, you can set up printer sharing on a network or connect the printer to a print server.

  • Enable printer sharing on the computer the printer is connected to

  • Connect the printer to a network and enable printer sharing

  • Use a print server to share the printer on the network

Q21. Explain types of Firmwall

Ans.

Firewalls can be categorized into three types: packet filtering, stateful inspection, and proxy server.

  • Packet filtering firewalls examine packets and block or allow them based on predefined rules.

  • Stateful inspection firewalls keep track of the state of active connections and make decisions based on the context.

  • Proxy server firewalls act as an intermediary between clients and servers, filtering and forwarding traffic.

  • Examples: Cisco ASA (stateful inspection), pfSense (packet f...read more

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