Technical interviews are a crucial step for freshers entering the tech industry. Whether you’re preparing for IT support, software development, or network administration, understanding the common technical interview questions helps you stand out from the competition.
In this guide, we’ll walk you through 10 important technical interview questions for freshers with detailed answers, real-life examples, and bonus FAQs to strengthen your preparation. Let’s dive in!
What Are Technical Interview Questions?
Technical interview questions assess your problem-solving ability, domain knowledge, and logical reasoning skills. These questions often revolve around subjects like:
Programming (C, Java, Python, etc.)
Networking and OS
Database Management
Troubleshooting and Support
Algorithms and Data Structures
System Design (basic level)
Top 10 Technical Interview Questions for Freshers
1. What is the difference between a compiler and an interpreter?
Answer:
A compiler translates the entire source code into machine code before execution, whereas an interpreter translates and executes code line by line.
Example:
Compiler: C, C++
Interpreter: Python, JavaScript
2. Explain the concept of OOPs (Object-Oriented Programming).
Answer:
OOP is a programming paradigm based on the concept of objects. The four main principles are:
Encapsulation
Inheritance
Polymorphism
Abstraction
Example:
A Car class with properties like color and model is an object. Inheritance allows ElectricCar to inherit from Car.
3. What is a deadlock in operating systems?
Answer:
A deadlock occurs when two or more processes are waiting indefinitely for resources held by each other.
Example:
Process A waits for a file locked by Process B, and vice versa. Neither proceeds — resulting in deadlock.
4. What is normalization in databases?
Answer:
Normalization is the process of organizing data to reduce redundancy and improve data integrity.
Example:
Splitting a single table of employee data into multiple tables like Employee, Department, and Role to avoid duplicate entries.
5. What is the difference between HTTP and HTTPS?
Answer:
HTTP: HyperText Transfer Protocol, not secure
HTTPS: Secure version of HTTP, uses SSL/TLS encryption
Example:http://example.com is not securehttps://example.com is secure and encrypted.
6. What are GET and POST methods in HTTP?
Answer:
GET: Sends data via URL, used for retrieving data.
POST: Sends data in the request body, used for submitting data securely.
Example:
Login form submission typically uses POST.
Fetching search results uses GET.
7. What is an IP address?
Answer:
An IP address is a unique identifier assigned to devices on a network. It enables communication between systems.
Example:
IPv4: 192.168.1.1
IPv6: 2001:0db8:85a3:0000:0000:8a2e:0370:7334
8. What is recursion in programming?
Answer:
Recursion occurs when a function calls itself to solve a smaller instance of the problem.
Example:
def factorial(n):
return 1 if n == 0 else n * factorial(n - 1)
9. Explain the difference between stack and queue.
Answer:
Stack: LIFO (Last In, First Out)
Queue: FIFO (First In, First Out)
Example:
Stack: Undo operations
Queue: Print job scheduling
10. What is DNS and how does it work?
Answer:
DNS (Domain Name System) translates domain names into IP addresses. It’s like the internet’s phonebook.
Example:www.google.com → 142.250.195.68
Pro Tips for Freshers in Technical Interviews
Understand the basics before jumping to advanced topics.
Communicate your thought process clearly.
Don’t panic if you don’t know an answer — explain how you’d find the solution.
Practice with mock interviews and platforms like HackerRank, LeetCode, or GeeksforGeeks.
Bonus: Technical Support Interview Questions
Q1: How do you troubleshoot a slow computer?
Answer:
Check system resource usage via Task Manager, run virus scans, remove startup programs, and check disk space.
Q2: What would you do if a user can’t connect to the internet?
Answer:
Check physical connections
Restart the router
Run
ipconfig/pingtestsReset network settings
Q3: What is BIOS?
Answer:
BIOS (Basic Input Output System) is firmware used to perform hardware initialization during booting.
FAQs – Technical Interview Questions for Freshers
Q1. How should a fresher prepare for a technical interview?
- Focus on core subjects from your curriculum, practice coding problems, revise academic projects, and stay updated on current tech trends.
Q2. What are the most asked technical interview questions?
Frequently asked questions include:
Difference between programming languages
Data structure operations
SQL queries
Networking basics
OOPs concepts
Q3. Can I clear a technical interview without experience?
- Yes, interviewers expect you to show problem-solving ability, clarity of thought, and basic technical understanding rather than job experience.
Q4. How many technical rounds are there for freshers?
- Typically, there are 1-2 technical rounds, followed by an HR round. Some companies may include an online coding test or aptitude round.
Q5. Do I need to learn DSA for technical interviews?
- Yes, Data Structures and Algorithms (DSA) are often part of coding rounds. Start with arrays, linked lists, stacks, and trees.
Q6. What tools are commonly used in technical support roles?
Remote desktop tools (TeamViewer, AnyDesk)
Ticketing systems (Zendesk, Freshdesk)
Diagnostic tools (CMD, Task Manager, Event Viewer)
Q7. What should I carry to a technical interview?
Carry:
Resume (printed and digital copy)
ID Proof
Certificates (if required)
Pen and notebook
Read more insightful tech interview guides on Capable Techies.
