Quectel Wireless Application Engineer 1 Interview Questions and Answers

Concurrency in Swift can be handled using Grand Central Dispatch (GCD) and Operation Queues.

• Use GCD to perform tasks concurrently by creating dispatch queues.

• Use Operation Queues to manage and execute multiple operations concurrently.

• Avoid race conditions by using serial queues or synchronization techniques like semaphores or locks.

iOS app distribution methods include App Store, Ad Hoc, Enterprise, and TestFlight.

• App Store distribution is for public release and requires Apple's review process.

• Ad Hoc distribution allows sharing apps with a limited number of devices.

• Enterprise distribution is for in-house apps within a company.

• TestFlight is for beta testing with external testers before App Store release.

SpringBootAnnotation is used to enable Spring Boot features in a Java application. @Controller is used for MVC pattern, @RestController is used for RESTful web services.

• SpringBootAnnotation is used to enable Spring Boot features like auto-configuration, component scanning, etc.

• @Controller is used for MVC pattern to handle web requests and return a view, while @RestController is used for RESTful web services to return d...read more

Stream API in Java provides a way to process collections of objects in a functional style.

• Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);

• Lambda expressions can be used with Stream API to define behavio...read more

Check if array of strings is monotonous

• Iterate through the array and compare each string with the next one to check for monotonicity

• If all strings are in increasing or decreasing order, the array is monotonous

• Examples: ['apple', 'banana', 'cherry'] is monotonous, ['orange', 'kiwi', 'apple'] is not

I have 5 years of experience as an Applications Engineer in the automotive industry.

• Designed and implemented software solutions for vehicle diagnostics

• Collaborated with cross-functional teams to troubleshoot and resolve technical issues

• Provided technical support to customers and conducted product demonstrations

• Developed training materials and conducted training sessions for internal teams

• Contributed to product developm...read more

Use the equals() method in Java to compare two strings for equality.

• Use the equals() method to compare two strings for equality.

• Example: String str1 = "hello"; String str2 = "hello"; if(str1.equals(str2)) { // strings are equal }