DAZN Interview Questions, Process, and Tips

Q1. What is an LVM
Ans. 
LVM stands for Logical Volume Manager, a tool used in Linux systems to manage disk space by creating logical volumes from physical volumes.
• LVM allows for dynamic resizing of logical volumes without needing to unmount the filesystem

• It provides features like striping, mirroring, and snapshots for data management

• Common LVM commands include pvcreate, vgcreate, lvcreate, lvextend, lvreduce

• Example: Creating a new logical vol...read more
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Q2. How to check the open ports
Ans. 
To check open ports, use tools like netstat, nmap, or telnet
• Use netstat command to display all open ports on a system

• Use nmap tool to scan for open ports on a remote system

• Use telnet command to check if a specific port is open on a remote host
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Q1. What is a file storage and block storage
Ans. 
File storage stores data in files and folders, while block storage stores data in blocks or chunks.
• File storage organizes data in a hierarchical structure of files and folders, similar to a traditional file system.

• Block storage breaks data into blocks or chunks and stores them in a raw format without any file system structure.

• File storage is commonly used for storing documents, images, videos, etc., while block storage...read more
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Q2. How do you troubleshoot a server
Ans. 
To troubleshoot a server, start by checking for hardware issues, then move on to software problems and network connectivity.
• Check hardware components such as power supply, CPU, RAM, and storage devices for any issues or failures.

• Review system logs and error messages to identify any software-related issues or conflicts.

• Verify network connectivity by checking cables, switches, routers, and firewall settings.

• Use diagnosti...read more
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Basic LIS problem. Coded using Java. Asked to improve it using collections.

Q1. Explain current project and what you have handled
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Q2. Longest substring problem
Ans. 
Find the longest substring without repeating characters in an array of strings.
• Iterate through each string in the array

• Use a set to keep track of characters seen so far

• Update the longest substring length as you iterate
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Q1. Self introduction
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Q2. How to handle angry customer
Ans. 
Listen actively, empathize, remain calm, apologize, offer solutions, follow up
• Listen to the customer's concerns without interrupting

• Empathize with the customer's emotions and show understanding

• Remain calm and composed, even if the customer is being aggressive

• Apologize for the inconvenience caused, regardless of fault

• Offer solutions to resolve the issue and meet the customer's needs

• Follow up with the customer to ensure
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Q1. Previous project details Technical questions mentioned in resume
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Q2. Regression vs sanity vs smoke
Ans. 
Regression, sanity, and smoke testing are different types of software testing used in QA.
• Regression testing is used to ensure that new code changes do not negatively impact existing functionality.

• Sanity testing is a narrow and focused testing to quickly determine if the new functionality is working as expected.

• Smoke testing is a preliminary testing to check if the critical functionalities of the software are working fi...read more
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Q3. Sanity vs smoke
Ans. 
Sanity tests are focused on specific functionality while smoke tests are broader and check if the basic functionalities work.
• Sanity tests are narrow and deep, focusing on specific functionality to ensure it works correctly.

• Smoke tests are broad and shallow, checking if the basic functionalities of the system work without major issues.

• Sanity tests are usually run after a specific change or bug fix to ensure that the par...read more
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Q4. Validation vs verification
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Validation ensures the product meets the customer's needs, while verification ensures the product meets the requirements.
• Validation confirms that the product meets the customer's needs and is fit for purpose.

• Verification confirms that the product meets the specified requirements and is error-free.

• Validation is subjective and involves customer feedback, while verification is objective and involves testing against requir...read more
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Q5. Issue vs bug and example
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An issue is a general term for any problem, while a bug specifically refers to a coding error.
• An issue can refer to any problem or concern, such as a feature not working as expected or a design flaw.

• A bug specifically refers to a coding error that causes unexpected behavior in the software.

• For example, if a user interface element is not aligned properly, it would be considered an issue. But if clicking on a button does...read more
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