20+ Wipro Senior Engineer Interview Questions and Answers

VPN is a secure connection between two networks. IPsec is a protocol used to secure the VPN connection.

• VPN allows remote access to a network through a secure connection

• IPsec provides encryption and authentication for the VPN connection

• IPsec tunnels can be troubleshooted by checking the configuration, verifying the network topology, and checking for any firewall or NAT issues

• Examples of VPN technologies include OpenVPN, Cisco AnyConnect, and Microsoft DirectAccess

I am comfortable with OSPF and BGP routing protocols.

• I have experience in configuring and troubleshooting OSPF and BGP.

• I am familiar with OSPF areas, LSAs, and BGP attributes.

• I have worked with OSPF and BGP in both enterprise and service provider networks.

• I understand the differences between OSPF and BGP and when to use each protocol.

• I am also familiar with other routing protocols such as EIGRP and RIP.

C++ is an extension of C with object-oriented programming features.

• C++ supports classes and objects while C does not.

• C++ has better support for polymorphism and inheritance.

• C++ has a standard template library (STL) while C does not.

• C++ allows function overloading while C does not.

• C++ has exception handling while C does not.

STP is a protocol used to prevent network loops. BPDU guard and filter are STP features to enhance network stability.

• STP stands for Spanning Tree Protocol

• It is used to prevent network loops by creating a loop-free logical topology

• BPDU (Bridge Protocol Data Unit) is a message exchanged between switches to elect the root bridge and determine the best path to it

• BPDU guard is a feature that disables a port if it receives a BPDU, preventing loops caused by unauthorized switches

• BPD...read more

Tosca uses unique identification mechanism called TBox to identify objects and their properties.

• TBox is a unique identifier used by Tosca to identify objects and their properties

• It is a combination of the object name and its properties

• TBox is used to create reusable test cases and reduce maintenance efforts

• Example: TBox for a button on a webpage could be 'Button_Login_Click'

• Tosca also uses XScan to identify objects based on their visual appearance

Yes, I have experience writing playbooks rules for automation in various engineering projects.

• Yes, I have written playbooks rules using tools like Ansible for automating infrastructure tasks.

• I have experience creating rule-based automation scripts to streamline engineering processes.

• I can provide examples of playbooks I have written for automating deployment, configuration, and monitoring tasks.

Data abstraction is the process of hiding implementation details and showing only the necessary information to the user.

• It is a way of organizing complex systems

• It allows users to interact with complex systems without needing to understand the underlying details

• It helps to reduce complexity and increase efficiency

• Examples include object-oriented programming and APIs

Different manufacturing processes are selected based on factors like cost, quality, production volume, and material properties.

• Consider cost implications of each manufacturing process

• Evaluate quality requirements and capabilities of each process

• Take into account production volume and efficiency of each process

• Analyze material properties and compatibility with each process

• Examples: Injection molding for high volume plastic parts, CNC machining for precision metal components

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs focuses on creating objects that contain both data and functions to manipulate that data.

• It emphasizes on encapsulation, inheritance, and polymorphism.

• Examples of OOPs languages are Java, C++, Python, etc.

Digital forensics working procedures involve collecting, preserving, analyzing, and presenting digital evidence in a legally admissible manner.

• Collecting digital evidence from various sources such as computers, mobile devices, and cloud storage.

• Preserving the integrity of the evidence by creating forensic images and maintaining a chain of custody.

• Analyzing the evidence using specialized tools and techniques to uncover relevant information.

• Presenting the findings in a clear an...read more

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

• Storage classes include 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 retain their value between function calls.

• Extern variables are declared outside of any function and can be accessed by multiple files.

Polymorphism is the ability of an object to take on many forms.

• It allows objects of different classes to be treated as if they were objects of the same class.

• It is achieved through method overriding and method overloading.

• Example: A shape class can have different subclasses like circle, square, triangle, etc. and all of them can be treated as shapes.

• Example: A method can have different implementations in different classes but can be called using the same name.

• Example: The + o...read more

Find a duplicate character in a string

• Iterate through the string and store each character in a hash set

• If a character is already in the hash set, it is a duplicate

A C program to reverse a given string.

• Declare a character array to store the input string.

• Use a loop to iterate through the string and swap the characters.

• Print the reversed string.

n-tier architecture is a software design pattern that divides an application into logical layers.

• It separates presentation, application processing, and data management functions.

• Each layer can be developed and maintained independently.

• Examples include 3-tier and 4-tier architectures.

• It improves scalability, maintainability, and flexibility of the application.

SIEM tools are security information and event management tools used to collect, analyze, and report on security data.

• SIEM tools help organizations to detect and respond to security incidents in real-time.

• They collect data from various sources such as network devices, servers, and applications.

• SIEM tools use correlation rules to identify patterns and anomalies that may indicate a security threat.

• Examples of SIEM tools include Splunk, IBM QRadar, and ArcSight.

• SIEM tools provide...read more

Swapping two numbers using macro in C language

• Use a temporary variable to store the value of one number

• Assign the value of the second number to the first number

• Assign the value of the temporary variable to the second number

• Define a macro for swapping the numbers

• Example: #define SWAP(a,b) {int temp; temp=a; a=b; b=temp;}

MHR can be found using the formula 220 - age.

• MHR = 220 - age

• MHR stands for Maximum Heart Rate

• It is a rough estimate of the maximum number of times your heart should beat per minute during exercise

Coding output on pointers

• Pointers are variables that store memory addresses

• Dereferencing a pointer retrieves the value stored at the memory address

• Pointer arithmetic can be used to access elements of an array

• Null pointers point to no memory address

• Wild pointers point to arbitrary memory addresses