Indian Railways Junior Executive Interview Questions and Answers

I have the skills, experience, and passion to excel in this role.

• I have a strong background in data analysis and have successfully completed numerous projects in the past.

• I am detail-oriented and have a proven track record of delivering high-quality work under tight deadlines.

• I am a team player and have excellent communication skills, which allows me to collaborate effectively with colleagues and stakeholders.

I am a dedicated and detail-oriented analyst with a strong background in data analysis and problem-solving.

• I have a Bachelor's degree in Statistics and have completed multiple internships in data analysis.

• I am proficient in statistical software such as R and Python.

• I have experience in conducting market research and creating detailed reports for stakeholders.

• I am a quick learner and enjoy tackling complex problems to f

Multithreading in Java refers to the concurrent execution of two or more parts of a program for maximum utilization of CPU.

• Multithreading allows multiple threads to run concurrently within a single program.

• It improves the performance of the program by utilizing the CPU more efficiently.

• Java provides built-in support for multithreading through the java.lang.Thread class.

• Multithreading can be used for tasks such as backg...read more

CPU scheduling policies include FCFS, SJF, Round Robin, Priority, and Multilevel Queue. The operating system does the scheduling.

• FCFS (First Come First Serve)

• SJF (Shortest Job First)

• Round Robin

• Priority

• Multilevel Queue

• Operating system does scheduling

Jvm is Java Virtual Machine. It manages threads on its own.

• Jvm is a virtual machine that executes Java bytecode.

• It provides a runtime environment for Java programs.

• Jvm manages threads on its own using its own thread scheduler.

• Jvm is platform-independent and provides a layer of abstraction between the Java code and the underlying operating system.

• Examples of popular JVM implementations include Oracle's HotSpot and OpenJ

Tree traversal is a technique to visit all nodes of a tree in a specific order.

• There are three types of tree traversals: inorder, preorder, and postorder.

• Inorder traversal visits the left subtree, then the root, and then the right subtree.

• Preorder traversal visits the root, then the left subtree, and then the right subtree.

• Postorder traversal visits the left subtree, then the right subtree, and then the root.

• For exampl...read more

ArrayList and Vector are both dynamic arrays, but Vector is synchronized and slower. Traversing a Vector is similar to an ArrayList.

• ArrayList is not synchronized, while Vector is synchronized.

• ArrayList is faster than Vector, but Vector is thread-safe.

• To traverse a Vector, we can use a for loop or an iterator, similar to an ArrayList.

• Example: Vector v = new Vector<>(); for(String s : v) { //do something }