Freelancer.com System Engineer Interview Questions and Answers

Reasoning type questions

Q1. Tell me about yourself
Ans. 
I am a dedicated and experienced System Engineer with a strong background in network infrastructure and troubleshooting.
• Over 5 years of experience in designing, implementing, and maintaining network systems

• Proficient in troubleshooting hardware and software issues

• Skilled in network security protocols and best practices

• Certified in Cisco CCNA and CompTIA Network+

• Strong communication and problem-solving skills
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Q2. Past company projects
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I have worked on various projects in my past company, including network infrastructure upgrades, server migrations, and implementing security measures.
• Upgraded network infrastructure to improve performance and reliability

• Migrated servers to new hardware for better efficiency

• Implemented security measures such as firewalls and encryption protocols
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Q1. Asked about oops concepts, past projects and DBMS questions
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Easy

Good and easy not too difficult

Good not much difficult

Q1. Normal discussion
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Q2. Tell about your self
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Q1. Why ur are switching from mechanical to IT . Oops concepts
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Q1. Related to process
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Q2. Technology used in previous company
Ans. 
At my previous company, we used a variety of technologies including AWS, Docker, Kubernetes, Jenkins, and Ansible.
• AWS (Amazon Web Services) for cloud computing services

• Docker for containerization of applications

• Kubernetes for container orchestration

• Jenkins for continuous integration and continuous deployment

• Ansible for automation of IT tasks
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It was very easy . Basic concepts were asked just refer face prep ,prep insta , and online study for you from YouTube .It will really help you a lot.

Q1. Why java string are immutable?
Ans. 
Java strings are immutable to ensure security, thread safety, and performance optimization.
• Immutable strings prevent malicious code from modifying the string content.

• Immutable strings can be safely shared across multiple threads without synchronization issues.

• Immutable strings allow for efficient memory allocation and garbage collection.

• String pool in Java is possible because of immutability.

• Examples of immutable class
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Q2. Why java doesn't support multiple inheritance?
Ans. 
Java doesn't support multiple inheritance to avoid the diamond problem.
• Multiple inheritance can lead to the diamond problem where a class inherits from two classes with a common parent.

• This can cause ambiguity in method calls and lead to code complexity.

• Java supports multiple interface inheritance to achieve similar functionality.

• For example, a class can implement multiple interfaces to inherit their methods.

• This allow...read more
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Q3. Simple coding questions
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