Siemens Front End Developer interview questions

1.Given a list of non-negative integers, arrange them in such a manner that they form the largest number possible. The result is going to be very large, hence return the result in the form of a string. Input: 3 30 34 5 9 546 54 60 548 Output: 9534330 6054854654 3 30 34 5 9 34 30 95 3 2. what is authgaurd and its interfaces 3. auth routing, he asks me to write whats the content in the routing file 4.put vs patch method 5.How you have done authentication with your application 6.for..of vs for..in 7.what is an option call 8.he ask me to write code for the nested component 9.he ask me to write code for nested submodules