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Software Developer / Software Engineer – Active Directory Basics, IT Support Q&A, Troubleshooting & Interview Preparation | Complete Notes

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This document covers foundational IT concepts relevant to software developers and IT support roles, including Active Directory components, group types, group policies, DC vs ADC, DHCP, DNS, VPN, IPCONFIG, and desktop/server OS differences. It also contains troubleshooting steps, scenario-based questions, and detailed model answers for common IT support interviews. Additionally, it provides guidance on customer handling, problem-solving, career-focused questions, and company-specific interview preparation. These notes offer a comprehensive resource for anyone preparing for IT support or technical job interviews.

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Uploaded on
November 14, 2025
Number of pages
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Written in
2025/2026
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What is Active Directory?

Active Directory authorizes and authenticates all users and computers in a window domain network,
ensuring the security of the computer and software. Through active directory various functions can be
managed like creating admin users, connecting to printers or external hard drives

What is group?

A group is a collection of user accounts, it provides a simplified administration in the network

How Many Types of Groups you have in AD?

Distribution Group
Security Group -Mailed Enabled.

What is OU?

OU means for Organizational unit. It is a container within Active Directory which can hold users, groups
and computers. It is the smallest unit on which an administrator can assign group policy settings.

What is group policy?

Group Policy provides streamlined access to all the users in the network. It can be used to define a
user’s security and networking policies. By group policy, you can keep control over certain function like
not allowing the users to shut down the system or using the control panel or running the command.
Group policy is applicable to active directory containers like OU, Site and Domain.

What is the Difference between permission, rights, and policy?

“Policy” is assigned on active directories, like the site, domain, and OU. The “Rights” are assigned to
users and groups, whereas the “Permission” is assigned for network resources like file, folders, and
printers.

What do DC and ADC stand for?

DC Stands for the Domain Controller, and ADC stands for Additional Domain Controller,
ADC is a backup of the Domain controller. The Domain controller is a server that checks the security
measures like user id, password.

What is the difference between DC (Domain Controller) and ADC (Additional Domain Controller)?

There is one difference the domain controller and additional domain controller, on DC all five
operational roles are available while in ADC only three operational role is available.

What is the difference between Sever Os and Desktop OS?

Server Os gives centralized administration for user’s and at any given time multiple users can access
shared resources with security, while Desktop Os offers access to only 1 individual

What are the things to do when a customer calls up that his computer is slow?


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, The IT officer first needs to check if the computer takes a long time to start. The next step would be to
check if the computer is slow with just one application or completely. Then the system checked for
viruses, spyware, and malware and finally, the system to check for the space available in the hard disk
drive

BSOD (Blue screen of Death)

Do you have an idea about the blue screen of death??
The indicant of a critical system problem called the blue screen of death where in this case the computer
freezes completely, in such a situation it does not denote anything, the system can restart or booted in
the safe mode to solve the issue.

What challenges do you expect in this IT Support Job Role?
The answer determines if you’re a person who looks for challenges and if you a perfect fit for the
position. You can answer that you would make use of your skills and experience in the right manner in
case you hired. Also answer that you’re a person who boosted by challenges and can face challenges.
You also can mention that you possess the skills and flexibility to handle any challenging chore.

For an average call, what is your expected period?
For IT support, the solving of a problem in a prompt manner is important. The Problem-solving aspect to
the satisfaction of the customer is another aspect of IT support engineers. Your answer should present
that you focus on communication skills, technical aspects, Problem-solving skills and also interested in
customer satisfaction.
You can answer that the time handled depends on the level of the issue. You can mention that you have
faced some issues and per call, it may take about 2 to 3 minutes.

What is your typical workweek as an IT support officer?
The Employers would like to know what the candidate would do while they work, take a deep look at
the job role you have applied for and how it relates to your previous role. When you wanted to talk
about typical work for a week, avoid discussing non-work-related activities.
During the time of the company, you should productively use the time. Your answers must focus on
work and formulate your answers in a way that presents that you organized.

What are the Tools you think are mandatory for problem-solving?
Team members, experience, manuals, and knowledge are a few tools that are useful for
troubleshooting, also do not present that team members are the main tool because any issue to solve
must handle independently.

As an IT Support Engineer have you learned from your mistakes?
The real fact is that everyone who works makes a mistake. There is no loss in making a mistake while
working, the main aspect of asking this question is to know if the candidate makes mistakes and learns
from it without repeating. To make this question an apt one, you can state an example- where you made
a mistake and learned from it and never repeated the same one again.

Where do you see yourself in the next five years??
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