Wipro Software Engineer Interview Questions and Answers

Program to check if input is a palindrome or not

• Create a function that takes a string input

• Remove all non-alphanumeric characters and convert to lowercase

• Compare the original string with its reverse to check if it's a palindrome

HashMap is a key-value pair data structure while HashSet is a collection of unique elements.

• HashMap stores key-value pairs while HashSet stores unique elements

• HashMap allows duplicate values but keys must be unique, HashSet does not allow duplicates

• Example: HashMap<String, Integer> map = new HashMap<>(); HashSet<String> set = new HashSet<>()

Path param is part of the URL path, while request param is part of the query string in the URL.

• Path param is used to identify a specific resource in the URL path, while request param is used to provide additional data to the server.

• Path param is defined in the URL path itself, like /users/{id}, while request param is appended to the URL as key-value pairs, like ?name=John&age=30.

• Path param is typically used for mandato...read more

A software engineer is a professional who designs, develops, and maintains software applications and systems.

• Designs and develops software applications

• Writes code to implement software solutions

• Tests and debugs software to ensure functionality

• Collaborates with team members to create software products

• Stays updated on new technologies and trends in the field

The best software developer is subjective and can vary based on individual preferences and criteria.

• The best software developer is someone who consistently produces high-quality code that meets project requirements.

• They have strong problem-solving skills and the ability to think critically about complex issues.

• Effective communication and collaboration with team members are also important qualities of a great software d...read more

It is a friendly way of wishing a software engineer to have a good day.

• It is a common phrase used to wish someone well in their day.

• It shows a positive and friendly attitude towards the software engineer.

• It can help create a positive work environment and boost morale.

A software engineer is responsible for designing, developing, and maintaining software applications and systems.

• Designing and developing software applications

• Testing and debugging code

• Collaborating with team members

• Updating and maintaining existing software

• Implementing new features and functionalities

The best software engineer is someone who is highly skilled, adaptable, and passionate about problem-solving.

• Highly skilled in programming languages and technologies

• Adaptable to new technologies and able to learn quickly

• Passionate about problem-solving and finding innovative solutions

• Good communication and teamwork skills

• Experience in relevant industry or domain (e.g. web development, mobile apps, AI)

• Continuous learnin...read more

A MAC address is a unique identifier for network interfaces, used for communication within a local network.

• Unique Identifier: Each MAC address is unique to a network interface, ensuring that devices can be accurately identified on a local network.

• Format: MAC addresses are typically represented as six groups of two hexadecimal digits, separated by colons or hyphens (e.g., 00:1A:2B:3C:4D:5E).

• Layer 2 Communication: MAC ad...read more

A threat is a potential danger that can exploit vulnerabilities to cause harm or damage to systems, data, or individuals.

• Threats can be intentional, such as hacking or malware attacks.

• They can also be unintentional, like natural disasters or human error.

• Examples include phishing attacks, where attackers trick users into revealing sensitive information.

• Another example is ransomware, which encrypts data and demands payme...read more

A passive attack involves eavesdropping or monitoring data without altering it, aiming to gather information stealthily.

• Passive attacks do not modify or disrupt the data being transmitted.

• Common examples include network traffic analysis and packet sniffing.

• Attackers may use tools like Wireshark to capture sensitive information.

• These attacks can lead to data breaches if sensitive information is collected.

OSI stands for Open Systems Interconnection, a conceptual framework for understanding network communication.

• Developed by ISO (International Organization for Standardization) in the late 1970s.

• Consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, Application.

• Each layer serves a specific function and communicates with the layers directly above and below it.

• Example: The Transport layer ...read more

An active attack involves an attacker attempting to alter system resources or affect their operation.

• Types of active attacks include modification of data, denial of service, and masquerading.

• Example: A man-in-the-middle attack where an attacker intercepts and alters communication between two parties.

• Example: A denial-of-service attack that overwhelms a server, making it unavailable to legitimate users.

• Active attacks ca...read more

Subnetting is the process of dividing a network into smaller, manageable sub-networks to improve performance and security.

• Subnetting helps in efficient IP address management by reducing wastage.

• It enhances network security by isolating segments of the network.

• For example, a Class C network with 256 addresses can be divided into smaller subnets.

• Subnet masks (like 255.255.255.0) define the network and host portions of an...read more

The best network device for transferring data depends on the specific use case, but routers and switches are commonly used.

• Routers connect multiple networks and direct data traffic efficiently.

• Switches operate within a single network, managing data packets between devices.

• For wireless data transfer, access points enhance connectivity and range.

• Firewalls protect data during transfer by filtering traffic based on securit...read more

A subnet is a segmented piece of a larger network, allowing for efficient IP address management and improved security.

• Subnets divide a larger network into smaller, manageable sections.

• Each subnet has a unique subnet mask that defines its range of IP addresses.

• Example: In a Class C network, 192.168.1.0/24 can be subnetted into 192.168.1.0/26 and 192.168.1.64/26.

• Subnets enhance security by isolating network segments.

• Rout...read more

A network is a collection of interconnected devices that communicate and share resources.

• Networks can be wired (e.g., Ethernet) or wireless (e.g., Wi-Fi).

• The Internet is the largest example of a global network.

• Local Area Networks (LANs) connect devices within a limited area, like an office.

• Wide Area Networks (WANs) connect devices over larger distances, such as cities or countries.

• Protocols like TCP/IP govern how data ...read more

The date format in Tosca for 2 workdays from today needs to be calculated.

• Calculate today's date

• Add 2 workdays to the current date

• Format the resulting date in Tosca format

The question is asking for the current date plus 2 weeks.

• Use a programming language's date manipulation functions to get the current date.

• Add 2 weeks to the current date to get the desired date.

• Consider leap years and different month lengths when calculating the date.

Developed a web-based project management tool for tracking tasks and deadlines

• Used HTML, CSS, and JavaScript for front-end development

• Implemented backend functionality using Node.js and MongoDB

• Incorporated user authentication and authorization features

• Utilized RESTful APIs for communication between front-end and back-end

The map function in Java is used to apply a function to each element in a collection and return a new collection with the results.

• Map function is part of the Java Stream API.

• It takes a lambda function as an argument to define the transformation to be applied.

• Example: List<Integer> numbers = Arrays.asList(1, 2, 3); List<Integer> squaredNumbers = numbers.stream().map(n -> n * n).collect(Collectors.toList());

ArrayList is a dynamic array in Java that can grow or shrink in size as needed.

• ArrayList is a class in Java that implements the List interface.

• It allows for dynamic resizing, unlike regular arrays.

• Elements can be added, removed, or accessed using index positions.

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

Spring Boot is a Java-based framework used for creating standalone, production-grade Spring-based Applications.

• Spring Boot simplifies the process of creating Spring applications by providing a set of default configurations.

• It allows for easy setup of Spring projects with minimal configuration.

• Spring Boot includes embedded servers like Tomcat, Jetty, or Undertow, making it easy to deploy applications.

• It promotes convent...read more