Cloud/Backend
Questions related to cloud services, backend integration, APIs, databases, Firebase, authentication, and server communication
16
Easy Questions
8
Medium Questions
6
Hard Questions
Easy Questions (16)
What is MQTT and AMQP , What is the difference between them?
What is MDM (Mobile Development Management ) , did you worked with MDM before?
mdmmobile-device-managemententerprisesecuritymanaged-configurations
Difference between refresh-token and access-token in the Rest API?
api
Difference between Protocol Buffers (protobuf) and JSON serialization ?
json
What are all the difference between SQL and No SQL ?
What are all the difference between relational and non-relational databases ?
database
What is CDN and what is the full form of it and what is the use of it ?
View Details →Code
What is Anomaly Detection?
anomaly-detectionmachine-learningmonitoringanalyticsai
What is Datadog Anomaly Detection?
datadoganomaly-detectionmonitoringaiopswatchdog
What is GA4 predictive insights ?
ga4google-analyticspredictive-analyticsmachine-learningai
What is the difference between firestore database and realtime database in firebase ?
databasefirebase
is websocket and webhook is same ? if not then difference between them ?
View Details →Code
Medium Questions (8)
( Crash Analytics , Exception , error) handling (like firebase analytics , Sentry)
firebase
What are all the different database you have used ? (like firebase , sql (sqfite) , app write , mango db)
databasefirebase
General update - integrated dozo mode finding , power saving mode finding in native android side for sending loss less FCM notification to the device
nativeandroid
How MQTT( Message Queuing Telemetry Transport) works entire flow ?
How websocket works entire flow ?
What is OWASP security standards ? list down and explain the top 10 stds ?
securityowaspmobile-securityencryptionauthentication
What are all the secured ways to build the mobile app ?
securityencryptionauthenticationbest-practicessecure-coding
Hard Questions (6)
Create a currency converter app with the provided API ? (Interview Question)
api
Difference between AWS - Lambda , AppSync , Cognito and what is the use of it with Flutter also compare it with Firebase ?
flutterfirebase
Create a API search func along with textfield , streamController and debounce time of 300ms ?
apistream
Explain the entire flow of how FCM works from getting the FCM token and how notification received in the device? in both android and iOS? because our app is in killed state in those situation how FCM plugin we used in our app works? how notification receiving in both android and iOS? provide me the entire entire flow of architecture diagram how it will work?
fcmfirebasepush-notificationsnative-integrationandroid
In MQTT how you will you know the device/user received the message when it is published to the subscribed topic? also provide me the entire entire flow of architecture diagram how it will work?
mqttmessagingqosreal-timearchitecture
I will describe a scenario, and you need to explain the complete flow of how you would handle it. For example: Suppose you are building a chat screen in a mobile application. When a user types a message and presses the Send button, the device may have no internet connection or very poor connectivity at that moment. How would you design the system to handle this situation? Would you prevent the user from sending the message until a stable internet connection is available, or would you store the message locally and send it automatically once the network connection is restored? Please explain the complete flow and the approach you would take.
architectureoffline-firstsyncdatabasenetworking