Bloomberg Onsite Support Engineer Interview Questions and Answers

OOPs concepts are the fundamental principles of object-oriented programming.

• Encapsulation - binding data and functions that manipulate the data

• Inheritance - creating new classes from existing ones

• Polymorphism - ability of objects to take on many forms

• Abstraction - hiding implementation details and showing only functionality

Storage classes in C define the scope and lifetime of variables.

• There are four storage classes in C: auto, register, static, and extern.

• Auto variables are local to a block and have automatic storage duration.

• Register variables are stored in CPU registers for faster access.

• Static variables have a lifetime throughout the program and are initialized only once.

• Extern variables are declared outside any function and can be a...read more

Linked list is a linear data structure. DFS and BFS are graph traversal algorithms.

• Linked list is a collection of nodes where each node points to the next node.

• DFS (Depth First Search) is a traversal algorithm that explores as far as possible along each branch before backtracking.

• BFS (Breadth First Search) is a traversal algorithm that explores all the vertices of a graph in breadth-first order.

• Example of linked list: ...read more

Optimize O(n2) program to O(log n)

• Use binary search instead of linear search

• Divide and conquer approach can be used

• Implement efficient data structures like heap, AVL tree, etc.

• Reduce unnecessary iterations and comparisons

• Use memoization to avoid redundant calculations

Second level cache is a caching mechanism used to improve performance by storing frequently accessed data in memory.

• Second level cache is implemented at the application level and can be configured using frameworks like Hibernate.

• To optimize SQL queries, one can use indexes, avoid using SELECT *, and use JOINs instead of subqueries.

• SOLID principles are a set of design principles for writing maintainable and scalable cod...read more

To deploy an application in AWS, you need to create an EC2 instance, configure security groups, install necessary software, and upload your application code.

• Create an EC2 instance in the desired region and select the appropriate instance type

• Configure security groups to allow traffic to and from the instance

• Install necessary software and dependencies on the instance

• Upload your application code to the instance

• Start the ...read more