10+ Castlight Health Interview Questions and Answers

To check only files (not folders or links) in Unix directory, use 'find . -maxdepth 1 -type f'

• Use the 'find' command in Unix

• Add the option '-maxdepth 1' to restrict search to current directory

• Add the option '-type f' to search only for files

• This will exclude folders and links from the search

Check if a number is prime or not using a simple coding question.

• Iterate from 2 to square root of the number and check if the number is divisible by any of the numbers in that range.

• If the number is divisible by any number other than 1 and itself, then it is not prime.

• Examples: 7 is prime (divisible by 1 and 7 only), 10 is not prime (divisible by 1, 2, 5, and 10).

To triage null pointer expectations in Java, check for null values before accessing objects or invoking methods.

• Always perform null checks before accessing object properties or invoking methods to avoid NullPointerException.

• Use conditional statements like if-else or ternary operators to handle null values appropriately.

• Consider using Optional class introduced in Java 8 to handle null values more effectively.

• Utilize logging and debugging tools to identify the root cause of nul...read more

Oops concepts refer to Object-Oriented Programming concepts that help in organizing and managing code efficiently.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon.

• Abstraction: Hiding the complex implementation details and showing only the necessary features to the us...read more

Sort the list of strings and remove the 2nd minimum element.

• Sort the list of strings in ascending order.

• Remove the 2nd element from the sorted list.

A program in Java to print 'Hello, World!'

• Create a class with a main method

• Use System.out.println() to print the message

Append adds a single element to the end of a list, while extend adds multiple elements to the end of a list.

• Append adds a single element to the end of a list.

• Extend adds multiple elements to the end of a list.

• Example: list1 = [1, 2, 3], list2 = [4, 5], list1.append(4) will result in list1 = [1, 2, 3, 4], list1.extend(list2) will result in list1 = [1, 2, 3, 4, 5]

OSI (Open Systems Interconnection) is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers. BGP (Border Gateway Protocol) is a standardized exterior gateway protocol designed to exchange routing and reachability information among autonomous systems (AS) on the Internet.

• OSI is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers....read more

Testing methodology is a systematic approach to testing software to ensure quality and reliability.

• Testing methodology involves planning, designing, executing, and evaluating tests.

• It includes defining test objectives, test cases, and test data.

• Different types of testing methodologies include black box testing, white box testing, and regression testing.

• Testing methodologies help identify defects and ensure that software meets requirements and functions correctly.