Signify Software Development Engineer Interview Questions and Answers

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Q1. Move zeros to end?
Ans. 
Move all zeros in an array of strings to the end while maintaining the order of non-zero elements.
• Iterate through the array and move all zeros to the end while keeping the order of non-zero elements.

• Use two pointers approach to swap elements in-place.

• Example: Input: ['a', 'b', 'c', '0', 'd', '0'], Output: ['a', 'b', 'c', 'd', '0', '0']
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Q2. WHat are AWS services?
Ans. 
AWS services are cloud computing services provided by Amazon Web Services.
• Compute services (e.g. EC2, Lambda)

• Storage services (e.g. S3, EBS)

• Database services (e.g. RDS, DynamoDB)

• Networking services (e.g. VPC, Route 53)

• Machine learning services (e.g. SageMaker)

• Analytics services (e.g. Redshift, Athena)
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Q3. What is dynamodb?
Ans. 
DynamoDB is a fully managed NoSQL database service provided by AWS.
• Fully managed NoSQL database service

• Scalable and high-performance

• Supports key-value and document data models

• Automatically replicates data across multiple Availability Zones for high availability
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Q1. How good are you at stress handling situations?
Ans. 
I am very good at handling stress situations, remaining calm and focused under pressure.
• I have experience working on high-pressure projects with tight deadlines.

• I am able to prioritize tasks effectively and stay organized during stressful situations.

• I have developed strong problem-solving skills that help me navigate stressful scenarios.

• I am able to communicate effectively with team members and stakeholders to manage s...read more
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Q2. Why daikin eloaborate this?
Ans. 
Daikin may elaborate on a topic to provide more detailed information or explanation.
• To provide a better understanding of a complex concept or product

• To address potential questions or concerns from customers

• To showcase the company's expertise and knowledge in the industry
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Q1. What is broadcast receiver
Ans. 
Broadcast receiver is a component in Android that allows the system to deliver events to the app.
• Component in Android system

• Receives and handles broadcast messages

• Used to respond to system-wide events

• Registered in the AndroidManifest.xml file
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Q2. What is intent service
Ans. 
IntentService is a class in Android that performs long-running operations in the background without blocking the main thread.
• IntentService is a subclass of Service that handles asynchronous requests (expressed as Intents) on demand.

• It is typically used for tasks like downloading files, syncing data, or performing any other background task.

• IntentService runs on a separate worker thread, so it does not interfere with the...read more
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Q1. Why do you want to join
Ans. 
I am passionate about developing innovative software solutions and believe this company aligns with my career goals.
• Excited about the opportunity to work on cutting-edge technologies

• Impressed by the company's reputation for fostering a collaborative work environment

• Seeking a challenging role that allows for professional growth and development
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Q2. What is your highest qualification
Ans. 
Master's degree in Computer Science
• Master's degree in Computer Science

• Specialization in software engineering

• Thesis on machine learning algorithms

• Graduated with honors
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Q1. Python and sql questions
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Q1. Client interview
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Q1. General discussion
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Q1. What is your weakness
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Q2. What is pn junction diode
Ans. 
A pn junction diode is a semiconductor device that allows current to flow in one direction only.
• Consists of p-type and n-type semiconductor materials

• When forward biased, allows current to flow easily

• When reverse biased, blocks current flow
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Q1. Why to join WD?
Ans. 
WD offers exciting opportunities for growth and innovation in the software engineering field.
• Opportunity to work on cutting-edge technologies

• Collaborative and supportive work environment

• Career development and growth opportunities

• Strong company culture and values

• Global presence and diverse projects
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Q2. Detect loop in linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect loop in linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at any point, there is a loop in the linked list.
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Q3. What are different product of WD?
Ans. 
WD offers a variety of products including external hard drives, internal hard drives, SSDs, and network attached storage devices.
• External hard drives

• Internal hard drives

• SSDs

• Network attached storage devices
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Q4. Do you want to ask any questions?
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There was a coding round on techgig which i cleared

Q1. I was invited to the technical round which was also online
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Q2. I could not attend the online technical round
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Q3. 2 questions on dsa
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Two Sum and 3 Sum in Leetcode

Q1. System design for a load balancer
Ans. 
A load balancer distributes incoming network traffic across multiple servers to ensure optimal resource utilization and prevent overload.
• Identify the requirements for the load balancer (e.g. traffic volume, server capacity)

• Choose a load balancing algorithm (e.g. round-robin, least connections)

• Implement health checks to monitor server status and remove unhealthy servers from rotation

• Consider scalability and redundancy f...read more
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