3000+ Capgemini Interview Questions and Answers

To open a file and read repeating words, use file handling and string manipulation techniques.

• Open the file using file handling techniques in the programming language of your choice.

• Read the contents of the file and store it in a string variable.

• Split the string into an array of words using a delimiter such as space or comma.

• Loop through the array and use a dictionary or hash table to count the frequency of each word.

• Print out the repeating words along with their frequency.

• Cl...read more

A user can be created in a single line command using the 'useradd' command in Linux.

• Use the 'useradd' command followed by the username to create a user.

• Specify additional options like home directory, shell, etc. if required.

• Example: useradd john -m -s /bin/bash

The REST API deployed on the server is lighter and faster than the one created using jar package.

• REST API is designed to be lightweight and efficient.

• JAR packages are typically larger and require more resources to run.

• Deploying REST API on a server allows for better scalability and performance.

• JAR packages may be useful for certain use cases, such as offline applications or embedded systems.

Capacity is the amount of work a team can handle in a sprint. Velocity is the amount of work a team can complete in a sprint.

• Capacity is calculated by estimating the number of hours each team member can work in a sprint and multiplying it by the number of team members.

• Velocity is calculated by adding up the number of story points completed in a sprint.

• Capacity and velocity can be adjusted based on factors such as team member availability, skill level, and external dependencie...read more

The OSI model is a conceptual framework that standardizes the functions of a communication system. MP and MC are different types of memory. Amplifier, transistor, capacitor, DC, and AC are electronic components.

• The OSI model consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• MP stands for Memory Protection and MC stands for Memory Control. MP provides protection against unauthorized access to memory, while MC controls the...read more

BGP is a routing protocol used in large networks. It has attributes that can be manipulated to control traffic flow.

• BGP attributes include AS path, next hop, local preference, and MED.

• AS path is used to prevent loops and determine the shortest path.

• Next hop is used to determine the next router to send traffic to.

• Local preference is used to determine the preferred path for outbound traffic.

• MED is used to influence the path for inbound traffic.

• Traffic can be manipulated by chan...read more

To filter 1 lakh rows in Excel with specific filter, use Excel's built-in filtering feature.

• Open the Excel file and select the column you want to filter.

• Go to the Data tab and click on the Filter button.

• A drop-down arrow will appear next to each column header.

• Click on the arrow of the column you want to filter and select the specific filter criteria.

• Excel will automatically filter the rows based on the selected criteria.

Java is platform independent because it compiles code into bytecode that can run on any system with JVM, which is platform dependent.

• Java code is compiled into bytecode, which is platform independent

• JVM interprets bytecode and translates it into machine code specific to the underlying platform

• JVM acts as a layer of abstraction between Java code and the operating system

• Example: A Java program compiled on Windows can run on Linux as long as the JVM is installed

I am a quick learner and can pick up a new programming language or technology within a few weeks.

• I have a strong foundation in programming concepts and principles.

• I am familiar with multiple programming languages and can draw parallels to learn new ones.

• I am proactive in seeking out resources and practice opportunities.

• For example, I recently learned Python in about 3 weeks by taking an online course and practicing on my own.

• I am confident in my ability to quickly adapt to ne...read more

Assembly language is a low-level programming language that is specific to a particular computer architecture.

• Assembly language is a symbolic representation of machine code instructions.

• It is used to write programs that directly control the computer's hardware.

• Assembly language is platform-dependent and requires knowledge of the computer's architecture.

• It provides direct access to the computer's memory and registers.

• Examples of assembly languages include x86, ARM, and MIPS.

To run a test suite using robotframework command line, use the 'robot' command followed by the path to the test suite file.

• Open the command prompt or terminal

• Navigate to the directory containing the test suite file

• Enter the command 'robot' followed by the name of the test suite file

• Add any additional options or arguments as needed

• Press enter to execute the command

• Example: robot my_test_suite.robot

• Example with options: robot --variable ENV:prod --outputdir results my_test_suit...read more

The starter dependency of the Spring Boot module is spring-boot-starter-parent.

• The starter dependency of Spring Boot provides a set of default configurations and dependencies to kickstart a Spring Boot project.

• It includes commonly used dependencies like spring-boot-starter-web, spring-boot-starter-data-jpa, etc.

• The spring-boot-starter-parent also manages the versions of all dependencies to ensure compatibility.

Interview questions on Selenium and Java concepts.

• Selenium: 1. Locators - identify web elements using ID, name, class, etc. 2. Handling multiple windows - switchTo() method. 3. Frame concept - switchTo().frame(). 4. Selenium grid - distribute tests across multiple machines.

• Java: 1. Oops concepts - inheritance, polymorphism, encapsulation, abstraction. 2. Java collection - List, Set, Map. 3. Difference between array, ArrayList, Map, HashMap. 4. Program to reverse string - use ...read more

I have worked with various Azure PaaS components including Azure Functions, Azure App Service, Azure Logic Apps, and Azure Event Grid.

• Azure Functions - serverless compute service for building event-driven applications

• Azure App Service - platform for building and deploying web and mobile apps

• Azure Logic Apps - workflow automation service for integrating apps, data, and services

• Azure Event Grid - event routing service for subscribing to and processing events

Internal partitions of Java Virtual Machine

• Java Virtual Machine has three internal partitions: Heap, Stack, and Method Area

• Heap is used for dynamic memory allocation of objects and arrays

• Stack is used for storing method frames and local variables

• Method Area is used for storing class-level data such as method code and static variables

The pseudocode will result in a compilation error due to incorrect printf format specifier.

• The printf function has two format specifiers but only one argument is provided.

• The first format specifier '%0' is incorrect and will result in a compilation error.

• The correct format specifier for printing an integer in hexadecimal format is '%x'.

To select a value from dropdown in Selenium, use the Select class and its methods.

• Locate the dropdown element using any of the locators like ID, name, class name, etc.

• Create an object of the Select class and pass the dropdown element as a parameter.

• Use the Select class methods like selectByVisibleText(), selectByValue(), or selectByIndex() to select the desired option.

• Finally, use the assert statement to verify if the selected option is correct.

Storage Queue, Service Bus Queue, Event Hub, IoT Hub, and Event Grid are different messaging services in Azure.

• Storage Queue is a simple message queue for reliable messaging between components within an application.

• Service Bus Queue is a fully-featured messaging service for decoupling applications and enabling reliable communication.

• Event Hub is a big data streaming platform for ingesting and processing large volumes of events in real-time.

• IoT Hub is a managed service for bid...read more

Yes, I have worked on static routing. AD can be increased by changing the administrative distance value.

• Static routing is a type of routing where the routes are manually configured by the network administrator.

• Administrative distance (AD) is a value assigned to a routing protocol or static route to indicate its trustworthiness.

• To increase AD in static routing, we can change the administrative distance value to a higher number.

• For example, if the current AD value is 1, we can ...read more

Authorizations can be triggered in simulators by following specific steps and commands.

• In simulators, authorizations can be triggered by sending specific commands or requests to simulate the authorization process.

• These commands typically involve providing necessary credentials, permissions, and access rights to trigger the authorization flow.

• For example, in a network simulator, triggering authorizations may involve sending authentication requests with valid credentials to sim...read more

Two systems in different VLANs can communicate through a router or layer 3 switch.

• A router or layer 3 switch is required to route traffic between VLANs

• Each system must have a unique IP address within their respective VLANs

• The router or layer 3 switch must have interfaces configured for each VLAN

• The router or layer 3 switch must have a routing table that includes both VLANs

• Firewall rules may need to be configured to allow traffic between VLANs

Python provides random module to generate random data and numbers.

• Import random module

• Use random.randint() to generate random integer within a range

• Use random.choice() to select a random element from a list

• Use random.random() to generate a random float between 0 and 1

• Use random.uniform() to generate a random float within a range

Entry point for Java programs.

• public: Access modifier that allows the method to be called from anywhere.

• static: Method belongs to the class and not to any instance of the class.

• void: Method does not return any value.

• main: Method name that is recognized by JVM as the entry point for the program.

• String args[]: Command line arguments passed to the program as an array of strings.

The drawback of scanf() is that it does not handle input validation well, leading to buffer overflow and security vulnerabilities.

• scanf() does not limit the amount of input it reads, leading to buffer overflow if the input is larger than the buffer size.

• scanf() does not handle invalid input well, leading to unexpected behavior or crashes.

• To avoid these issues, input validation should be performed before using scanf(). Alternatively, fgets() and sscanf() can be used for safer ...read more

Yes, we can override or replace the embedded Tomcat server in Spring Boot.

• Spring Boot allows for customization of embedded servers through configuration properties.

• You can replace Tomcat with other embedded servers like Jetty or Undertow.

• Example: To use Jetty instead of Tomcat, exclude Tomcat dependencies and include Jetty dependencies in your pom.xml file.

Approach to debug Talend job with 50% data loading to target out of 100 records from source

• Check the log files for any errors or warnings

• Verify the source and target connections

• Check if any filters or transformations are causing the issue

• Check if the job is designed for incremental load and if the correct parameters are set

• Check if there are any data quality issues in the source data

• Check if there are any network or system issues causing the job to fail

C language is important for its efficiency and low-level programming capabilities, with real-time applications in embedded systems and operating systems.

• C is a low-level language that allows for direct memory manipulation and efficient code execution.

• Real-time applications include embedded systems like microcontrollers and operating systems like Unix.

• C is also used in game development, system programming, and scientific computing.

• C's popularity has led to the creation of many...read more

TestNG is a testing framework for Java that supports various testing types and provides advanced features like parallel testing and reporting.

• TestNG stands for Test Next Generation.

• It supports various testing types like unit, functional, integration, and end-to-end testing.

• TestNG provides annotations like @Test, @BeforeSuite, @AfterSuite, etc. to define test methods and their execution order.

• It supports parallel testing, which helps in reducing the overall test execution time...read more

Good test cases require clear objectives, thorough planning, and attention to detail.

• Identify the objective of the test case

• Ensure the test case is specific, measurable, achievable, relevant, and time-bound (SMART)

• Consider all possible scenarios and edge cases

• Document the expected results

• Include preconditions and post-conditions

• Ensure the test case is repeatable and reproducible

• Review and validate the test case with stakeholders

My favorite programming language is Python.

• Python is easy to learn and has a simple syntax.

• It has a vast library of modules and frameworks for various purposes.

• Python is widely used in data science and machine learning.

• It is also great for web development, automation, and scripting.

• Some popular companies that use Python include Google, Facebook, and Netflix.

findelement returns the first matching element while findelements returns a list of all matching elements.

• findelement is used to locate the first matching element on a web page

• findelements is used to locate all matching elements on a web page

• findelement throws NoSuchElementException if no matching element is found

• findelements returns an empty list if no matching element is found

Break, continue and pass are control statements used in loops. Break terminates the loop, continue skips an iteration and pass does nothing.

• Break is used to terminate a loop when a certain condition is met

• Continue is used to skip an iteration of a loop when a certain condition is met

• Pass is used as a placeholder when a statement is required syntactically but no action is needed

Types of instances and their costs

• On-demand instances: pay as you go, no upfront cost

• Reserved instances: upfront payment for a discounted rate

• Spot instances: bid for unused capacity, can be cheapest but not guaranteed

• Lowest cost instance varies depending on usage and availability

• Consider usage patterns and budget when choosing instance type

One object will be created when string created using New keyword.

• When a string is created using the New keyword, only one object is created.

• This object is stored in the heap memory.

• The string object created using the New keyword is mutable.

• The string object created using the New keyword can be modified.

• The string object created using the New keyword is slower than the string literal.

Notify, wait, NotifyAll methods are part of Object class for thread synchronization.

• Object class is the root of all classes in Java.

• These methods are used for inter-thread communication and synchronization.

• Notify wakes up a single thread waiting on the object, while NotifyAll wakes up all threads.

• Wait method causes the current thread to wait until another thread notifies it.

• These methods are used in multi-threaded programming to avoid race conditions and deadlocks.

HSRP and VRRP are protocols used to provide redundancy for IP addresses. GLBP is another protocol that provides load balancing.

• HSRP and VRRP are used to provide redundancy for default gateways in a network.

• HSRP is Cisco proprietary while VRRP is an open standard.

• HSRP uses a virtual IP address while VRRP uses a virtual router ID.

• GLBP is a Cisco proprietary protocol that provides load balancing between multiple gateways.

• GLBP uses a virtual IP address and virtual MAC address to ...read more

Spanning tree protocol prevents loops in a network by disabling redundant links.

• Spanning tree protocol selects a root bridge and disables all other paths to prevent loops.

• It uses a cost metric to determine the shortest path to the root bridge.

• STP manipulation involves changing the cost metric to influence the path selection.

• Examples of STP manipulation include changing port priorities or enabling portfast.

• STP can be visualized using tools like Wireshark or Cisco's Packet Trac...read more

The principles of Agile are a set of values and beliefs that guide the Agile methodology.

• Customer satisfaction is the highest priority

• Welcome changing requirements, even late in development

• Deliver working software frequently

• Collaboration between business people and developers

• Build projects around motivated individuals

• Face-to-face conversation is the best form of communication

• Working software is the primary measure of progress

• Maintain a sustainable pace

• Continuous attention to ...read more

Methodology refers to a set of principles and guidelines for a specific process, while framework is a structure that provides a foundation for a process.

• Methodology is a set of rules and guidelines for a specific process, while framework is a structure that provides a foundation for a process.

• Methodology is more prescriptive, while framework is more flexible.

• Examples of methodologies include Waterfall, Agile, and Lean, while examples of frameworks include Scrum, Kanban, and S...read more

Finding missing symbol/visual in a grid based on rule-based logic in 6 minutes.

• Analyze the given symbols and their placement in the grid

• Identify the pattern or rule that governs the placement of symbols

• Apply the rule to the empty space to find the missing symbol

• Time management is crucial

• Practice with similar puzzles to improve deductive logical thinking skills

A constructor is a special method that is used to initialize objects in a class.

• Constructors have the same name as the class they are in.

• They are called automatically when an object is created.

• They can take parameters to set initial values for object properties.

• Example: public class Car { public Car(String make, String model) { this.make = make; this.model = model; } }

• Example: Car myCar = new Car("Toyota", "Corolla");

The life cycle of a thread in Java involves creation, running, blocking, and termination.

• A thread is created by instantiating a class that extends Thread or implements Runnable interface.

• The thread starts running when the start() method is called, executing the run() method.

• A thread can be blocked by calling sleep(), wait(), or join() methods.

• A thread terminates when the run() method completes or when stop() method is called.

Business intelligence can be used to identify patterns and trends in customer behavior, allowing for targeted up sell and cross sell strategies.

• Analyze customer data to identify common purchasing patterns and preferences

• Use predictive analytics to anticipate customer needs and offer relevant products or services

• Implement personalized marketing campaigns based on customer data

• Track the success of up sell and cross sell strategies and adjust as needed

• Provide sales teams with re...read more

To troubleshoot an issue, follow a systematic approach to identify the problem and find a solution.

• Gather information about the issue from the user

• Analyze the symptoms and try to reproduce the problem

• Check for common causes and known solutions

• Use diagnostic tools to identify the root cause

• Implement a solution or workaround

• Test the solution to ensure the issue is resolved

• Document the troubleshooting steps and the solution

Java is a versatile language with a vast community and excellent libraries.

• Java is platform-independent, making it easy to write code that can run on any device.

• It has a vast community of developers who contribute to its libraries and frameworks.

• Java is highly secure and provides excellent support for multithreading.

• It is an object-oriented language, making it easy to write modular and reusable code.

• Java is widely used in enterprise applications, such as banking and e-commerc...read more

Accounts receivable is the money owed to a company by its customers, while accounts payable is the money a company owes to its suppliers.

• Accounts receivable refers to the outstanding invoices or money owed to a company by its customers for goods or services provided.

• Accounts payable refers to the outstanding invoices or money that a company owes to its suppliers for goods or services received.

• Accounts receivable is an asset on the company's balance sheet, while accounts payab...read more

The @SpringBootApplication annotation is used to mark the main class of a Spring Boot application.

• It is a combination of @Configuration, @EnableAutoConfiguration, and @ComponentScan annotations.

• It tells Spring Boot to start adding beans based on classpath settings, other beans, and various property settings.

• It also implicitly provides a base package for component scanning.

• Example: @SpringBootApplication

• Example: @SpringBootApplication(scanBasePackages = "com.example")

Parallel testing is running multiple tests simultaneously to save time and increase efficiency.

• Parallel testing is useful for large test suites that take a long time to run.

• It requires a test framework that supports parallel execution.

• Code example: pytest -n 4 (runs 4 tests in parallel)

• Parallel testing can be done on multiple machines or on a single machine with multiple cores.

• It can help identify and isolate issues faster.

• Parallel testing can also help with load testing and ...read more

Questions on Angular, JavaScript, and CSS

• Angular components, directives, and interceptors

• Showing spinner from interceptor

• Reactive forms and authguards

• Hostlistener and component communication

• Dependency injection and optional chaining

• JavaScript async, defer, cloning objects, hoisting, spread operator, comparing objects, event bubbling, and prototype

• CSS box model

Designing Azure architecture using VM, VNet, and Load Balancers involves creating virtual machines, virtual networks, and load balancers to ensure scalability, availability, and performance.

• Start by creating a virtual network (VNet) to establish a private network in Azure.

• Create virtual machines (VMs) within the VNet to host your applications and services.

• Configure load balancers to distribute incoming traffic across multiple VMs for high availability and scalability.

• Use Azur...read more

A computer connects to the internet through a modem or router. Troubleshoot by checking connections and resetting devices.

• A computer can connect to the internet through a wired or wireless connection

• A modem or router is required to connect to the internet

• Check if the modem or router is properly connected and turned on

• Reset the modem or router if necessary

• Check network settings on the computer

• Try restarting the computer or device

• Contact internet service provider for further as...read more

There are four types of joins in SQL: Inner Join, Left Join, Right Join, and Full Outer Join.

• Inner Join: returns only the matching rows from both tables

• Left Join: returns all the rows from the left table and matching rows from the right table

• Right Join: returns all the rows from the right table and matching rows from the left table

• Full Outer Join: returns all the rows from both tables, with NULL values in the columns where there is no match

Answering questions related to Azure Data Engineer interview

• To read parquet file, use PyArrow or Pandas library

• To call notebook from ADF, use Notebook activity in ADF pipeline

• For Azure DevOps CI/CD process, use Azure Pipelines

• System variables in ADF can be accessed using expressions like @pipeline().RunId

To troubleshoot a blank monitor, check power, cables, and settings.

• Check if the monitor is receiving power and turned on

• Check if the cables are properly connected and not damaged

• Check the display settings on the computer

• Try connecting the monitor to a different computer or device

• Check for any error messages or codes on the monitor

• If all else fails, try resetting the monitor to factory settings

SPI testing is a type of software testing that focuses on measuring the performance of a system or application.

• SPI testing involves measuring the performance of a system or application against predefined metrics.

• Tools commonly used for SPI testing include JMeter, LoadRunner, and Gatling.

• REST API testing involves testing the functionality and performance of RESTful web services.

• Other skills I have experience in include test automation, agile methodologies, and defect tracking ...read more

Dispatch is a process of assigning tasks to appropriate resources. Voice for chatbot can be enabled using text-to-speech technology. Chatbot can be integrated with web application using APIs. Insights for chatbot can be captured using analytics tools.

• Dispatch is a process of assigning tasks to appropriate resources

• Voice for chatbot can be enabled using text-to-speech technology

• Chatbot can be integrated with web application using APIs

• Insights for chatbot can be captured using ...read more

Generic collections provide type safety and reusability in software development.

• Generic collections allow us to store and manipulate objects of any type in a type-safe manner.

• They provide compile-time type checking, reducing the chances of runtime errors.

• They promote code reusability by allowing the same collection to be used with different types.

• Generic collections improve performance by eliminating the need for boxing and unboxing operations.

• They enable us to write cleaner ...read more

Explanation of differences between programming concepts and techniques.

• Procedure vs Function: Functions return a value while procedures do not.

• Delete vs Truncate: Delete removes rows one by one while truncate removes all rows at once.

• Exit vs In: Exit is used to exit a loop or a program while In is used to pass values into a subprogram.

• Cursor vs Bulk Bind: Cursor fetches one row at a time while Bulk Bind fetches multiple rows at once.

• Cursor vs Collection: Cursor is used to fet...read more

Performing web application penetration testing on a website with firewall enabled.

• Identify the type of firewall and its configuration

• Perform reconnaissance to gather information about the target

• Identify vulnerabilities and exploit them

• Use tools like Burp Suite, Nmap, and Metasploit

• Test for common web application vulnerabilities like SQL injection and cross-site scripting

• Document findings and provide recommendations for remediation

Capital market is a financial market where long-term securities like stocks and bonds are bought and sold. Derivatives are financial instruments derived from an underlying asset.

• Capital market is a market for long-term securities like stocks and bonds

• It facilitates the buying and selling of financial instruments with long maturities

• Derivatives are financial instruments derived from an underlying asset

• They derive their value from an underlying asset like stocks, bonds, commodi...read more

Load balancing distributes incoming network traffic across multiple servers to ensure no single server is overwhelmed.

• Types of load balancing: round robin, least connections, IP hash, weighted round robin, etc.

• Routing methods: DNS-based, hardware-based, software-based, etc.

• Ports: Load balancers can operate at Layer 4 (TCP/UDP) or Layer 7 (HTTP/HTTPS).

• Docker commands: docker run, docker build, docker exec, etc.

• K8 master node components: API server, scheduler, controller manage...read more

To check if a number is divisible by both 5 and 7, we need to check if it is divisible by 35.

• Divide the number by 35 and check if the remainder is 0.

• Alternatively, check if the number is divisible by 5 and 7 separately.

• Example: 245 is divisible by both 5 and 7 as it is divisible by 35 (245/35 = 7 with remainder 0).

SQL query to find names of employees starting with 'A'

• Use the SELECT statement to retrieve data from the employee table

• Use the LIKE operator to match the names starting with 'A'

• Use the % wildcard to match any number of characters after 'A'

Answers to Linux Administrator L2 interview questions.

• A problem ticket is a record of an issue or problem that needs to be resolved.

• To recover shadow file, use a backup or recreate it using the passwd command.

• The name of the event daemon varies depending on the Linux distribution.

• inetd is a daemon that manages incoming network connections and launches the appropriate service.

Query optimization techniques and types of schemas

• Query optimization techniques include indexing, query rewriting, and partitioning

• Schemas include user-defined, system-defined, and temporary schemas

• User-defined schemas are created by users to organize database objects

• System-defined schemas are created by the database management system

• Temporary schemas are used for temporary storage of data

• Differences between schemas include ownership, accessibility, and visibility

KPIs used to measure project health

• Velocity: Measure of work completed in each sprint

• Sprint Burndown Chart: Tracks progress of work remaining in a sprint

• Cycle Time: Time taken to complete a user story from start to finish

• Defect Density: Number of defects found per unit of work

• Customer Satisfaction: Feedback from stakeholders and end-users

OOP stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.

• Main method can be overloaded in Java by defining multiple methods with the same name but different parameters.

• Abstraction in OOP is the concept of hiding the implementation details and showing only the necessary features of an object. Example: Car as an object with properties like color, model, and methods like start, stop.

• Inheritance in J...read more

My favorite language other than programming language is French.

• I love the sound of the language and its rich culture.

• I enjoy reading French literature and watching French films.

• I have traveled to France and appreciate the beauty of the country.

• I also appreciate the practicality of knowing a widely spoken language.

• For example, it has helped me communicate with French-speaking colleagues and clients.

Depreciation is necessary to allocate the cost of an asset over its useful life.

• Depreciation helps in matching the cost of an asset with the revenue it generates.

• It allows for the recognition of the wear and tear, obsolescence, and loss of value of assets over time.

• Depreciation expense reduces taxable income, resulting in tax savings for companies.

• It helps in determining the true profitability and financial position of a company.

• Depreciation is required by accounting standard...read more

SAP FICO is a module in SAP ERP that deals with financial accounting and controlling.

• SAP FICO stands for Financial Accounting and Controlling.

• It helps in managing financial transactions, generating financial statements, and analyzing financial data.

• It includes sub-modules like General Ledger Accounting, Accounts Payable, Accounts Receivable, Asset Accounting, and Controlling.

• It integrates with other SAP modules like Sales and Distribution, Material Management, and Production ...read more

Different types of test scenarios in JMeter and LoadRunner

• JMeter: HTTP requests, FTP requests, JDBC requests, SOAP/XML-RPC requests, LDAP requests, etc.

• LoadRunner: Web, Mobile, SAP, Database, Citrix, etc.

• Both tools support load, stress, endurance, and spike testing.

• JMeter supports distributed testing while LoadRunner requires additional licenses for it.

• Both tools allow for parameterization and correlation of test data.

Questions on SDLC, STLC, test cases, project framework, bug reporting, and Agile Scrum.

• SDLC (Software Development Life Cycle) is the process of developing software from planning to deployment.

• STLC (Software Testing Life Cycle) is the process of testing software from planning to deployment.

• Test cases are written to ensure that software meets the requirements and functions as expected.

• Project framework refers to the structure and organization of a project, including tools and p...read more

Java Strings are immutable to ensure data integrity and security.

• Immutable strings prevent accidental modification of data.

• String pooling optimizes memory usage by reusing existing strings.

• Immutable strings are thread-safe, simplifying concurrent programming.

• String immutability allows for efficient caching and hashing.

• Immutable strings enable safe sharing of string references.

Binomial coefficient is used to find the number of ways to choose r items from n items.

• Binomial coefficient formula is C(n,r) = n! / (r! * (n-r)!)

• It is used in probability and combinatorics

• Example: C(5,2) = 10, which means there are 10 ways to choose 2 items from 5 items

Self-Join is when a table is joined with itself, while Cross-Join is when every row from one table is combined with every row from another table.

• Self-Join is used to combine rows with other rows in the same table.

• Cross-Join generates a Cartesian product of the two tables involved.

• Self-Join is typically used to compare rows within the same table, like in hierarchical structures.

• Cross-Join is used when there is no common key between the two tables.

A network is a group of interconnected devices that communicate with each other. An IP address is a unique identifier assigned to each device on a network.

• A network is a collection of devices such as computers, printers, and servers that are connected to each other.

• An IP address is a unique identifier assigned to each device on a network to enable communication between devices.

• The range of an IP address is determined by the subnet mask, which specifies the number of bits used...read more

Heap memory is a region of memory used for dynamic memory allocation.

• Heap memory is allocated at runtime and can be resized as needed.

• Memory management involves allocating and deallocating memory to prevent memory leaks and optimize performance.

• Common memory management techniques include garbage collection and manual memory management.

• Examples of languages that use heap memory include C++, Java, and Python.

Deleting last 30 days logs in Tomcat using shell script

• Use find command to locate files older than 30 days

• Use xargs command to pass the file names to rm command

• Use crontab to schedule the script to run periodically

To publish and run a process without an orchestrator, you can use the UiPath Robot Tray or the command line interface.

• Open the UiPath Robot Tray and navigate to the Processes tab.

• Click on the 'Publish' button to publish the process to a local folder.

• Once published, you can run the process by selecting it from the list and clicking on the 'Start' button.

• Alternatively, you can use the command line interface by navigating to the installation folder of UiPath Robot and running th...read more

Estimating the development of a new framework involves considering various factors and breaking down the tasks.

• Identify the scope and requirements of the framework

• Break down the tasks into smaller components

• Consider the complexity and dependencies of each component

• Estimate the effort required for each component

• Consider the availability of resources and expertise

• Account for potential risks and challenges

• Review and refine the estimates as the development progresses

To insert value in text box using excel sheet through Selenium, we need to read data from excel and use sendKeys() method.

• Read data from excel using Apache POI or JXL library

• Identify the text box element using Selenium

• Use sendKeys() method to insert the value from excel into the text box

Abstract classes and interfaces are used to achieve abstraction and provide a blueprint for classes to implement.

• Used abstract class to create a base class for different types of vehicles, with common properties and methods.

• Used interface to define a contract for different payment methods, with each method implementing its own logic.

• Abstract classes are used when we want to provide a default implementation for some methods, while leaving others to be implemented by the derive...read more

I know Windows, macOS, and Linux. They differ in terms of user interface, file system, and software compatibility.

• Windows is the most widely used OS with a user-friendly interface and compatibility with most software.

• macOS is exclusive to Apple devices and has a sleek interface with a focus on creative work.

• Linux is open-source and highly customizable, with a variety of distributions tailored to different needs.

• File systems differ between the OSes, with Windows using NTFS, ma...read more

To minimize or maximize a window in Selenium to a desired size, we can use the WebDriver's manage() method.

• Use the manage() method of WebDriver to access the options for managing the browser window.

• To maximize the window, use the maximize() method of the Options class.

• To minimize the window, use the minimize() method of the Options class.

• To set a desired window size, use the setSize() method of the Options class and pass the desired width and height as arguments.

Yes, an AWS keypair can be recovered if lost.

• To recover a lost AWS keypair, you can create a new keypair and associate it with the existing EC2 instances.

• First, create a new keypair in the AWS Management Console or using the AWS CLI.

• Then, stop the EC2 instances associated with the lost keypair.

• Detach the root volume from each instance and create a new temporary instance.

• Attach the root volume to the temporary instance and mount it.

• Modify the authorized_keys file on the mounte...read more

Selenium supports various locators such as ID, Name, Class Name, Tag Name, Link Text, Partial Link Text, CSS Selector and XPath.

• ID locator is the most efficient and reliable locator

• Name locator is used for locating elements by their name attribute

• Class Name locator is used for locating elements by their class attribute

• Tag Name locator is used for locating elements by their tag name

• Link Text locator is used for locating elements by their link text

• Partial Link Text locator is u...read more

Arrays are fixed in size, while lists can grow or shrink dynamically.

• Arrays are a collection of elements of the same data type, while lists can contain elements of different data types.

• Arrays are accessed using an index, while lists are accessed using an iterator.

• Arrays are faster for accessing elements, while lists are faster for inserting or deleting elements.

• Examples of arrays include int[] and char[], while examples of lists include ArrayList and LinkedList.

Manual testing is the process of manually testing software applications to identify defects and ensure quality.

• Manual testing involves executing test cases manually without the use of automation tools.

• It requires the tester to simulate end-user behavior and validate the software against specified requirements.

• Testers perform various types of testing such as functional, regression, integration, and usability testing.

• They document test cases, track defects, and provide feedback...read more

Answering questions related to network administration including subnetting, host configuration, and routing protocols.

• Subnetting involves dividing a network into smaller subnetworks for better management and security.

• Host configuration refers to the setup and management of individual devices on a network.

• Standard and extended ACLs are used to control access to network resources based on IP addresses.

• Routing protocols like RIP, EIGRP, BGP, and OSPF are used to determine the be...read more

Open source monitoring tools can be used to implement monitoring and visualize metrics.

• Choose a suitable open source monitoring tool such as Nagios, Zabbix, or Prometheus.

• Install and configure the monitoring tool to collect data from the desired sources.

• Define the metrics to be monitored and set up alerts for critical events.

• Use a visualization tool such as Grafana to create dashboards and display the collected metrics.

• Ensure that the monitoring system is scalable and can han...read more

I identified the problem statement by analyzing the client's needs and pain points.

• Conducted interviews with stakeholders

• Reviewed data and reports

• Identified patterns and trends

• Considered industry best practices

• Developed a clear problem statement

• Example: Client needs to increase sales revenue by 20% within the next quarter

CDMA and TDMA are wireless communication technologies. MUX stands for Multiplexer.

• CDMA stands for Code Division Multiple Access and TDMA stands for Time Division Multiple Access.

• CDMA allows multiple users to share the same frequency band by assigning unique codes to each user.

• TDMA divides a frequency band into time slots and each user is assigned a specific time slot.

• A MUX is a device that combines multiple signals into a single signal for transmission over a single channel.

• M...read more

SDLC stands for Software Development Life Cycle. It is a process used to design, develop and test software.

• SDLC is a framework that defines the tasks performed at each stage of software development.

• The different stages in SDLC are planning, analysis, design, development, testing, deployment, and maintenance.

• Each stage has its own set of deliverables and objectives.

• For example, in the planning stage, the project scope and requirements are defined.

• In the design stage, the softw...read more

To calculate project timeline delay, use techniques like critical path analysis, Gantt charts, and Earned Value Management. Overcome delay by re-sequencing tasks, adding resources, or reducing scope.

• Use critical path analysis to identify tasks critical to project completion

• Create a Gantt chart to visualize project timeline and identify delays

• Use Earned Value Management to track project progress and identify deviations from plan

• Re-sequence tasks to optimize project timeline

• Add...read more

To check if a number is prime or composite, take n input and perform the necessary checks.

• A prime number is only divisible by 1 and itself

• A composite number has more than 2 factors

• Check if n is divisible by any number between 2 and n-1

• If n is divisible by any number between 2 and n-1, it is composite

• If n is not divisible by any number between 2 and n-1, it is prime

To check if the sum of the digits of a number is palindrome or not

• Extract the digits of the number using modulo operator and add them

• Convert the sum to a string and check if it is a palindrome

• If it is a palindrome, then the sum of digits is also a palindrome

• Example: For number 12345, sum of digits = 15, which is not a palindrome

• Example: For number 12321, sum of digits = 9, which is a palindrome

There are two types of constructors in Java: Default and Parameterized.

• Default constructor is provided by the compiler if no constructor is defined.

• Parameterized constructor takes arguments and initializes the object's state.

• Example: public class Person { public Person() {} public Person(String name, int age) { this.name = name; this.age = age; } }