QUICK HEAL TECHNOLOGIES Interview Questions, Process, and Tips

Q1. Python- Explain how to take input from user
Ans. 
Use the input() function in Python to take input from the user.
• Use the input() function to prompt the user for input and store the input in a variable.

• You can specify a prompt message inside the input() function to guide the user on what to input.

• The input() function always returns a string, so you may need to convert the input to the desired data type if needed.
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Q2. Write query to fetch duplicate records from table
Ans. 
Use GROUP BY and HAVING clause to fetch duplicate records from a table
• Use GROUP BY clause to group records with same values

• Use HAVING clause to filter out groups with count greater than 1

• Example: SELECT column_name, COUNT(column_name) FROM table_name GROUP BY column_name HAVING COUNT(column_name) > 1
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Tha aptitude exam was not very easy and not that difficult. It was something which one can easily get into.

Q1. Question related to 1. Servers 2. Coding practices 3. Database queries 4. Latest versions syntax
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Q1. Nice to meet you how
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Q2. Gggghgvvvvvvvvvvvvbbvvvvvvvvvvvvvb
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Q1. Nice to meet you sir how are u
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Q1. Nice to meet you how
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Q1. How to reset Password Protected BIOS Configuration
Ans. 
To reset a password protected BIOS configuration, you can use various methods such as removing the CMOS battery, using a BIOS reset jumper, or using manufacturer-specific software.
• Remove the CMOS battery from the motherboard for a few minutes to reset the BIOS settings.

• Locate the BIOS reset jumper on the motherboard and move it to the reset position for a few seconds.

• Use manufacturer-specific software or tools to reset...read more
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Q2. Tell me Something About DNS Server
Ans. 
DNS server is a computer server that contains a database of public IP addresses and their associated hostnames.
• DNS stands for Domain Name System.

• It translates domain names into IP addresses.

• DNS servers help in resolving domain names to their corresponding IP addresses.

• They play a crucial role in the functioning of the internet.

• DNS servers use a hierarchical structure for efficient name resolution.

• They use different typ...read more
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Q3. Explain XSS Attack , how will you perform, which resources are needed
Ans. 
XSS attack is a type of web vulnerability where attackers inject malicious scripts into trusted websites to steal sensitive information or perform unauthorized actions.
• XSS stands for Cross-Site Scripting.

• Attackers exploit vulnerabilities in web applications to inject malicious scripts.

• These scripts are then executed by unsuspecting users visiting the compromised website.

• XSS attacks can be classified into three types: s...read more
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Q4. Which is the type of data stored in OSI Model Data Link Layer
Ans. 
The type of data stored in OSI Model Data Link Layer is the frame or packet.
• The Data Link Layer is responsible for the physical transmission of data between network nodes.

• It encapsulates the network layer packet into a frame with additional control information.

• Examples of data stored in this layer include Ethernet frames, MAC addresses, and error detection codes.
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Q5. MITM Attack, and Disadvantages
Ans. 
MITM Attack is a type of cyber attack where an attacker intercepts communication between two parties to gain unauthorized access or steal information.
• MITM stands for Man-in-the-Middle.

• The attacker positions themselves between the sender and receiver to intercept and manipulate the communication.

• Disadvantages of MITM attacks include unauthorized access to sensitive information, data theft, and potential for further expl...read more
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Q6. Difference between SSL and TLS
Ans. 
SSL and TLS are cryptographic protocols used to secure communication over the internet.
• SSL stands for Secure Sockets Layer and TLS stands for Transport Layer Security.

• SSL is the predecessor of TLS.

• Both protocols provide encryption and authentication for secure communication.

• TLS is considered more secure than SSL.

• SSL uses a combination of symmetric and asymmetric encryption, while TLS primarily uses symmetric encryption...read more
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Q1. Windows internals
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Q2. Windows apis like loaddll dynamically
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Q3. IPC mechanism in windows
Ans. 
IPC mechanism in Windows allows communication between processes through shared memory, message passing, and synchronization.
• IPC mechanisms in Windows include named pipes, mailslots, shared memory, and sockets.

• Named pipes allow communication between processes on the same machine or over a network.

• Mailslots are used for one-way interprocess communication.

• Shared memory allows processes to share data by mapping a region of...read more
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Q4. Multi-threading in windows
Ans. 
Multi-threading in Windows allows multiple threads to run concurrently within a single process.
• Windows provides APIs like CreateThread and CreateProcess to create and manage threads.

• Threads share the same memory space within a process, allowing for efficient communication and resource sharing.

• Windows supports both user-mode and kernel-mode threads, with user-mode threads being more lightweight.

• Synchronization mechanism...read more
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Q5. C++ general questions
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Q1. Memory management
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Q2. Memory mapping in windows, file mapping
Ans. 
Memory mapping in Windows allows files to be mapped directly into memory for faster access and manipulation.
• Memory mapping allows files to be accessed as if they were in memory

• File mapping can be used for sharing data between processes

• Improves performance by reducing disk I/O operations

• Examples: CreateFileMapping, MapViewOfFile, UnmapViewOfFile
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Q3. Windows internal
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Q4. Critical section in windows
Ans. 
Critical section in Windows is a synchronization mechanism used to protect shared resources from concurrent access.
• Critical sections are used to ensure mutual exclusion between threads accessing shared resources.

• They are implemented using the Windows API functions InitializeCriticalSection, EnterCriticalSection, and LeaveCriticalSection.

• Critical sections are more efficient than mutexes for synchronization within a sing...read more
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