HashTrust Technologies interview question

Mobile application development: - What development platform do you recommend for mobile app? - How do you minimize security risks? - You’ve just been alerted that your new app is prone to crashing. What do you do? [How do you troubleshoot a crashing application?] - Which JSON framework is supported by iOS? - What are the best ways of achieving concurrency in iOS? - What are the new feature in Swift 5.0?: Just give 1-2 features, there are major updates in swift 5.0 - What mechanism does iOS support for multi-threading? - Provide some tips to reduce battery usage in an mobile application React native: - What is your fav hook, how to implement it. - List some benefits of using React Native for building mobile apps? - Can we combine android and ios code in react native? - What is difference between state and props? - What are components of react native?