Infinera Software Engineer Intern Interview Questions and Answers

Program to reverse an integer

• Convert the integer to a string

• Reverse the string

• Convert the reversed string back to an integer

I have worked on various projects including a web application for inventory management and a mobile app for task tracking.

• Developed a web application using React for inventory management, allowing users to track stock levels and generate reports.

• Created a mobile app using Flutter for task tracking, enabling users to create, assign, and track tasks in real-time.

• Collaborated with a team of developers to integrate APIs an...read more

Yes, I am interested in studying further to enhance my skills and knowledge in software engineering.

• Interested in pursuing a Master's degree in Computer Science

• Enrolling in online courses to learn new technologies and programming languages

• Attending workshops and conferences to stay updated with industry trends

Reverse a linked list without using extra memory

• Iterate through the linked list and change the next pointers to reverse the list

• Use three pointers - prev, current, and next - to keep track of the reversed list

• Start with prev and current pointing to null and the head of the linked list respectively

• While traversing the list, update the next pointer of the current node to point to the previous node

• Move prev and current po...read more

Data structures are fundamental concepts in software engineering that organize and store data efficiently.

• Arrays: Simple and efficient for storing and accessing elements.

• Linked Lists: Dynamic and flexible, efficient for insertion and deletion.

• Stacks: LIFO structure, useful for managing function calls and undo operations.

• Queues: FIFO structure, ideal for managing tasks and scheduling.

• Trees: Hierarchical structure, used ...read more

The difference is that 'int arr[5]' creates an array on the stack, while 'malloc(5*sizeof(int))' allocates memory on the heap.

• int arr[5] creates an array of 5 integers on the stack, which is a fixed-size memory allocation.

• malloc(5*sizeof(int)) dynamically allocates memory on the heap, allowing for variable-size memory allocation.

• The memory allocated with malloc must be explicitly freed with free() to avoid memory leaks

I am a passionate software engineer with a strong background in computer science and experience in developing innovative solutions.

• Completed a Bachelor's degree in Computer Science from XYZ University

• Proficient in programming languages such as Java, Python, and C++

• Worked on various projects including a mobile app for tracking fitness goals

• Familiar with Agile development methodologies and version control systems like Gi

In 5 years, I see myself as a senior software engineer leading a team of developers on innovative projects.

• Continuing to enhance my technical skills and knowledge through ongoing learning and certifications

• Taking on more leadership responsibilities and mentoring junior team members

• Contributing to the development of cutting-edge software solutions for the company

• Possibly pursuing opportunities for advancement within the...read more

I tend to overthink details and can be overly critical of my own work.

• Overthinking details can lead to delays in completing tasks

• Being overly critical can hinder progress and confidence

Yes, I am interested in studying further to enhance my skills and stay updated with the latest technologies.

• I believe continuous learning is essential in the fast-paced tech industry

• Further studies can help me specialize in a specific area of software engineering

• Advanced degrees or certifications can open up new career opportunities

Program to print binary tree elements in spiral order

• Use two stacks to keep track of nodes at odd and even levels

• Push nodes from left to right in odd level stack and right to left in even level stack

• Pop nodes from the stack alternatively and print them

• Repeat until both stacks are empty

Entering a URL in the browser triggers a series of events to retrieve and display the requested webpage.

• The browser checks the cache for a previously stored copy of the webpage

• If not found, the browser sends a request to the DNS server to resolve the domain name to an IP address

• The browser then sends a request to the web server at the IP address for the webpage

• The web server responds with the requested webpage

• The brows...read more

MAC addresses are required for identifying devices on a local network, while IP addresses are used for identifying devices on a global network.

• MAC addresses are used for communication within a local network

• IP addresses are used for communication across different networks

• MAC addresses are assigned by the manufacturer and cannot be changed

• IP addresses can be assigned dynamically or statically

• MAC addresses are used in the...read more

Developed a web application for tracking inventory and sales data

• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express for back-end

• Utilized MongoDB for database management

• Integrated authentication and authorization features for secure access

• Designed user-friendly interface with responsive design

An ArrayList is a dynamic array in Java that can grow or shrink in size during runtime.

• ArrayList is a class in Java's Collection framework.

• It implements the List interface and allows duplicate elements.

• Elements can be added or removed using methods like add(), remove(), etc.

• It can also be sorted using the sort() method.

• Example: ArrayList names = new ArrayList<>();

• names.add("John"); names.add("Mary"); names.remove(0);