Triomics Interview Questions and Answers

Q1. What is MVVM and why is it recommended?
Ans. 
MVVM stands for Model-View-ViewModel, a design pattern that separates the UI from the business logic.
• MVVM separates the UI (View) from the business logic (ViewModel) by introducing a middle layer (ViewModel) that handles the communication between the two.

• Model represents the data and business logic, View represents the UI components, and ViewModel acts as an intermediary between them.

• MVVM promotes better code organizat...read more
Answered by AI
Add your answer
Q2. Difference between lateinit and lazy.
Ans. 
lateinit is used for non-nullable properties that are initialized in the constructor, while lazy is used for properties that are initialized only when accessed for the first time.
• lateinit is used for properties that must be initialized before being used, while lazy is used for properties that can be initialized later.

• lateinit properties must be of non-nullable types, while lazy properties can be nullable.

• lateinit prope...read more
Answered by AI
Add your answer
Q3. Different Coroutines launchers and differences among them.
Ans. 
Different Coroutines launchers in Android and their differences.
• MainCoroutineDispatcher - runs on the main thread and is used for UI updates.

• IOCoroutineDispatcher - optimized for IO-bound tasks like network requests or database operations.

• DefaultCoroutineDispatcher - suitable for CPU-bound tasks that don't require the main thread.

• UnconfinedCoroutineDispatcher - runs on the current thread until the first suspension poin...read more
Answered by AI
Add your answer
Q4. Supervisor Scope Vs Coroutine Scope.
Ans. 
Supervisor Scope is used in structured concurrency for managing child coroutines, while Coroutine Scope is used for launching coroutines.
• Supervisor Scope is used to manage the lifecycle of child coroutines, ensuring that if one child fails, it does not affect the others.

• Coroutine Scope is used for launching coroutines and managing their lifecycle.

• SupervisorScope is a part of the Kotlin coroutines library, while Corouti
Answered by AI
Add your answer
Q5. Firebase rules and use cases.
Add your answer
Q6. Firebase Push Notifications: How can we send different push notifications to other users?
Ans. 
Different push notifications can be sent to other users by targeting specific user IDs or using topics in Firebase Cloud Messaging.
• Use Firebase Cloud Messaging to send push notifications to specific user IDs.

• Utilize topics in Firebase Cloud Messaging to send notifications to groups of users with similar interests or characteristics.

• Implement logic in the backend to determine which users should receive which notificatio...read more
Answered by AI
Add your answer
Q7. Background Service and Foreground Service.
Add your answer
Q8. Can foreground services be launched if application is in background?
Ans. 
Yes, foreground services can be launched if application is in background.
• Foreground services can be launched even if the application is in the background to perform tasks that are noticeable to the user.

• Foreground services have a higher priority than background services and are less likely to be killed by the system.

• Examples of foreground services include music playback, navigation, or ongoing downloads.
Answered by AI
Add your answer
Q9. How to implement Retrofit and how can we make REST calls using that?
Ans. 
Retrofit is a type-safe HTTP client for Android and Java. It simplifies making REST API calls.
• Create a Retrofit instance using Retrofit.Builder class

• Define an interface with method definitions for API endpoints

• Use annotations like @GET, @POST, @PUT, @DELETE to specify the type of HTTP request

• Execute the API call using Call object and Callback interface

• Handle the response in onResponse() and onFailure() methods
Answered by AI
Add your answer
Q10. Room database migration strategy. How can we handle migration when one more column is added to the table without hampering previous data in that table?
Ans. 
Use Room database migration with SQLite ALTER TABLE command to add a new column without losing previous data.
• Create a new migration class in Room database with SQLite ALTER TABLE command to add the new column.

• Ensure that the new column is nullable or has a default value to prevent issues with existing data.

• Update the entity class in the code to include the new column and handle it accordingly in the app.

• Test the migrat...read more
Answered by AI
Add your answer
Q11. What is livedata? Different methods of MutableLiveData and differences between them.
Ans. 
LiveData is an observable data holder class. MutableLiveData is a subclass of LiveData that allows data to be changed.
• LiveData is an observable data holder class that is lifecycle-aware.

• MutableLiveData is a subclass of LiveData that allows data to be changed.

• Methods of MutableLiveData include setValue() and postValue().

• setValue() updates the value on the main thread, while postValue() updates the value asynchronously.

• L...read more
Answered by AI
Add your answer
Q12. What are the configuration changes?
Ans. 
Configuration changes refer to modifications made to settings or parameters in software or hardware systems.
• Configuration changes can include adjustments to network settings, display preferences, security settings, etc.

• Examples of configuration changes include changing the screen resolution on a computer, updating the Wi-Fi password on a router, or modifying notification settings on a smartphone.
Answered by AI
Add your answer
Q13. MVVM project folder structure.
Ans. 
MVVM project folder structure organizes code into separate layers for better maintainability and scalability.
• Separate folders for Models, Views, ViewModels, and Services

• Models folder contains data classes representing the data structure

• Views folder contains XML layout files for UI components

• ViewModels folder contains classes that handle business logic and interact with the data layer

• Services folder contains classes for...read more
Answered by AI
Add your answer
Q14. HTTP interceptors and why do we need it?
Ans. 
HTTP interceptors are used to intercept and modify HTTP requests and responses in an application.
• HTTP interceptors are commonly used in web development to add authentication tokens, logging, error handling, or other functionalities to HTTP requests and responses.

• They can be used to modify headers, add authorization tokens, log requests, handle errors, or perform any other pre-processing or post-processing tasks.

• Example...read more
Answered by AI
Add your answer
Q15. JVM overloads and JVM static? Is there any difference in JVM static and Companion object?
Ans. 
JVM static vs Companion object in Kotlin
• JVM static is used in Java to create static methods and variables within a class

• Companion object in Kotlin serves a similar purpose to JVM static, providing a way to define static members within a class

• Companion objects can implement interfaces, extend classes, and have their own methods and properties

• JVM static members are accessed using the class name, while companion object me
Answered by AI
Add your answer
Q16. How do we access companion object from Java code?
Ans. 
Companion objects in Kotlin can be accessed from Java code using the @JvmStatic annotation.
• Use the @JvmStatic annotation on companion object functions or properties to access them from Java code.

• In Java code, access companion object members using the class name followed by the Companion keyword.
Answered by AI
Add your answer
Q17. Is there any Google recommendation for targetSdk version?
Ans. 
Google recommends targeting the latest SDK version for better performance and security.
• Google recommends targeting the latest stable SDK version for new apps

• Updating targetSdkVersion can improve app performance and security

• It is important to regularly update targetSdkVersion to stay compliant with Google Play Store policies
Answered by AI
Add your answer
Q18. How can we show riders location without using Map SDK?
Ans. 
Use geocoding APIs to convert location data into human-readable addresses.
• Use geocoding APIs like Google Geocoding API or OpenCage Geocoding API to convert latitude and longitude coordinates into human-readable addresses.

• Display the address instead of a map to show the rider's location.

• Allow riders to input their address manually if they prefer not to share their location.
Answered by AI
Add your answer
Q19. One coding question: Given an integer array nums sorted in non-decreasing order, remove the duplicates in place such that each unique element appears only once. The relative order of the elements should b...read more
Ans. 
Remove duplicates from sorted array in place and return number of unique elements.
• Use two pointers approach to iterate through the array and remove duplicates in place.

• Keep track of the current unique element and update the array accordingly.

• Return the count of unique elements after removing duplicates.
Answered by AI
Add your answer

General SQL questions, Window Functions, Agg Functions, Case statement logic building

SQL assignment, easier than 1st round

Q1. Based on Past and current Experience
Add your answer
Q2. Project Discussion
Add your answer
Q3. Metrics Development
Add your answer

Q1. Head of Analytics Round
Add your answer
Q2. Project discussion and case studies
Add your answer

A Housekeeping Attitude Test evaluates an individual's qualities, skills, and mindset essential for housekeeping roles. It focuses on:

1. Cleanliness Awareness – Understanding hygiene and maintaining standards.


2. Behavior and Attitude – Being polite and professional with guests.


3. Time Management – Completing tasks efficiently.


4. Teamwork – Collaborating well with colleagues.


5. Problem-Solving – Handling issues calmly under pressure.


6. Client Satisfaction – Meeting guests' needs effectively.

A housekeeping case study is a practical scenario used to assess problem-solving, decision-making, and operational skills in housekeeping.

Example:

A guest complains about dirty linens and odors in a fully booked hotel. The test evaluates how you:

1. Resolve the guest's issue immediately.


2. Maintain cleanliness standards.


3. Manage staff workload effectively.


4. Prevent future issues

Q1. The HR duties for housekeeping include managing and supporting housekeeping staff to ensure efficient operations and a clean, hygienic environment. Key responsibilities are: 1. Recruitment and Staffing H...read more
Add your answer

Q1. End to end architecture of current project
Add your answer
Q2. Basic spark code to read & write files
Add your answer
Q3. How to upsert data in table in spark
Add your answer
Q4. How do you handle sudden increase in data volume
Add your answer
Q5. Discussion on delta tables & ACID transactions
Add your answer
Q6. Explain autoloader and use case in Databricks
Add your answer
Q7. SQL question using window functions Lead, row number
Add your answer
Q8. Python question using hashmap & String
Add your answer

Q1. Current project understanding end to end
Add your answer
Q2. Data pipeline design for a ride sharing company, ask bunch of follow up questions on the conclude a particular design.
Add your answer
Q3. Explain how you follow SDLC(Agile, waterfall) ?
Add your answer
Q4. Why are you looking for a change now
Add your answer

Q1. Basic introductions
Add your answer
Q2. What kind of work are you looking for? what do you know about the company
Add your answer
Q3. Willing to relocate?
Add your answer
Q4. Personal hobbies and aspirations
Add your answer

Q1. Tell me your self introduction
Add your answer
Q2. What is DNS
Add your answer
Q3. What is letest version of windows
Add your answer
Q4. How to be configured office 365
Add your answer

Q1. What do you understand about Human Resources?
Ans. 
Human Resources involves managing the employees of an organization, including recruitment, training, and employee relations.
• Human Resources is responsible for recruiting and hiring new employees.

• They handle employee training and development programs.

• HR manages employee relations, including conflict resolution and performance evaluations.

• They ensure compliance with labor laws and company policies.

• HR also oversees benefi...read more
Answered by AI
Add your answer
Q2. What is your exceptions ?
Ans. 
My exceptions include lack of attention to detail, difficulty in delegating tasks, and a tendency to take on too much work.
• Lack of attention to detail can lead to errors in work

• Difficulty in delegating tasks can result in inefficiency and burnout

• Taking on too much work can lead to stress and decreased productivity
Answered by AI
Add your answer
Q3. Do you know how TA function works?
Ans. 
TA function works to attract, source, assess, and hire top talent for an organization.
• TA function involves creating job postings and advertising them on various platforms.

• It also includes sourcing candidates through job boards, social media, and networking.

• Assessing candidates through interviews, assessments, and reference checks is a key part of TA function.

• TA function works closely with hiring managers to understand ...read more
Answered by AI
Add your answer
Q4. Tell me something about yourself?
Ans. 
I am a recent graduate with a degree in Business Administration and a passion for leadership and problem-solving.
• Recent graduate with a degree in Business Administration

• Passionate about leadership and problem-solving

• Strong communication and organizational skills

• Experience in team projects and internships

• Goal-oriented and eager to learn and grow
Answered by AI
Add your answer
Q5. Are you able to handle the work pressure?
Ans. 
Yes, I am able to handle work pressure effectively by prioritizing tasks, staying organized, and seeking support when needed.
• I have experience in managing multiple projects simultaneously

• I am skilled at prioritizing tasks based on deadlines and importance

• I am able to stay calm and focused under pressure

• I am proactive in seeking help or guidance from colleagues or supervisors when needed
Answered by AI
Add your answer