2500+ Interview Questions and Answers

The minimum number of operations needed to make all elements of the array equal by performing addition, multiplication, subtraction, or division on any element.

• Iterate through the array and find the maximum and minimum values

• Calculate the difference between the maximum and minimum values

• Check if the difference is divisible by the length of the array

• If divisible, return the difference divided by the length

• If not divisible, return the difference divided by the length plus one

Compiler translates entire code into machine language while interpreter translates line by line.

• Compiler generates an executable file while interpreter does not.

• Compiler takes more time to analyze and translate the code while interpreter takes less time.

• Compiler produces faster and efficient code while interpreter produces slower code.

• Examples of compilers are GCC, Clang, and Visual C++ while examples of interpreters are Python, Ruby, and JavaScript.

Cloud technology is the delivery of computing services over the internet. Microsoft Intune is a cloud-based mobile device management (MDM) and mobile application management (MAM) solution.

• Cloud technology allows users to access data and applications from anywhere with an internet connection.

• Microsoft Intune is a cloud-based solution that allows organizations to manage mobile devices and applications.

• MAM allows organizations to manage and secure applications and data on mobile...read more

I have extensive experience with various content management systems and design software.

• Proficient in Adobe Creative Suite, including Photoshop, Illustrator, and InDesign

• Experience with WordPress, Drupal, and Joomla CMS platforms

• Familiarity with HTML, CSS, and JavaScript

• Ability to create and manage content for websites and social media platforms

• Experience with user experience (UX) design and testing

The task is to find the maximal AND value and the number of subsequences having this maximal AND value.

• Iterate through all possible k-element subsequences of the given array

• Calculate the bitwise AND of each subsequence

• Track the maximal AND value and the count of subsequences with this value

• Return the maximal AND value and the count modulo 1000000007

I have worked on multiple automation frameworks including Selenium, Appium, and TestNG.

• I have experience in creating and maintaining automated test scripts using Selenium WebDriver for web applications.

• I have also worked with Appium for mobile automation testing.

• TestNG has been my preferred choice for test management and reporting.

• I have also integrated automation scripts with CI/CD pipelines using tools like Jenkins.

• I have experience in creating custom frameworks using Java ...read more

Interview questions for Project Engineer position

• OOPs concept includes inheritance, polymorphism, encapsulation, and abstraction

• Encapsulation is hiding the implementation details while abstraction is hiding unnecessary details

• Array is a collection of similar data types while ArrayList is a dynamic array that can grow or shrink

• Data structures used may include linked lists, stacks, queues, and trees

• Foreign key is a column in a table that refers to the primary key of another tab...read more

I chose this programming language because of its versatility and popularity in the industry.

• The language has a wide range of applications and can be used for various purposes.

• It has a large community of developers who contribute to its development and provide support.

• The language is constantly evolving and adapting to new technologies and trends.

• Examples of its popularity and versatility can be seen in its use in web development, data analysis, and machine learning.

The most comfortable Windows OS for me to work on is Windows 10.

• Windows 10 is user-friendly and has a familiar interface.

• It offers improved security features compared to previous versions.

• Windows 10 provides regular updates and compatibility with modern software.

• It has a wide range of hardware and software support.

• Windows 10 includes useful features like Cortana and virtual desktops.

An IP address is a unique numerical identifier assigned to devices connected to a network to enable communication.

• IP stands for Internet Protocol

• It is required for devices to communicate with each other over a network

• It consists of a series of numbers separated by dots

• There are two types of IP addresses - IPv4 and IPv6

• Examples of IP addresses are 192.168.0.1 and 2001:0db8:85a3:0000:0000:8a2e:0370:7334

STP (Spanning Tree Protocol) is a network protocol that prevents loops in Ethernet networks. It elects a root bridge to manage the network.

• STP is a network protocol used to prevent loops in Ethernet networks.

• It works by creating a loop-free logical topology by blocking redundant paths.

• STP elects a root bridge, which becomes the central point of the network.

• The root bridge is the bridge with the lowest bridge ID.

• STP uses Bridge Protocol Data Units (BPDUs) to exchange informati...read more

Answering technical interview questions on SQL and programming

• Constraints are rules applied to columns in a database table to ensure data integrity

• COMMIT command is used to save changes made to a database

• JOIN operation is used to combine rows from two or more tables based on a related column

• Code for reversing an array: reverseArray(arr) {return arr.reverse();}

Capturing a client's voice involves active listening, empathy, and understanding their needs and preferences.

• Listen actively to their feedback and concerns

• Ask open-ended questions to encourage them to share their thoughts

• Empathize with their perspective and show that you understand their needs

• Use their language and tone in your communication

• Take note of their preferences and incorporate them into your strategy

• Collect data through surveys, focus groups, and social media monito...read more

Questions related to Selenium Automation and software testing

• To remove duplicate characters in a string, use a loop and a hashset

• To perform operations on specific buttons for a user, use conditional statements

• To switch to a particular tab, use the window handle

• 500 error code in Postman validation indicates a bad request

• Primary key is a unique identifier for a record in a database

• Roles and responsibilities in a project depend on the project and team

To calculate the timing of an incident assigned to multiple groups, determine the start and end times for each group and calculate the total duration.

• Identify the groups to which the incident is assigned

• Determine the start time and end time for each group's involvement

• Calculate the duration for each group

• Sum up the durations to get the total timing of the incident

Prioritizing projects involves assessing their importance, urgency, and impact on business goals.

• Identify the goals and objectives of the company

• Assess the importance and urgency of each project

• Consider the impact of each project on business goals

• Allocate resources based on priority

• Regularly review and adjust priorities as needed

It depends on the app's settings and the user's permissions.

• If the managed app allows opening zip files and the user has permission to do so, then they can open it.

• If the app does not allow opening zip files or the user does not have permission, then they cannot open it.

• The user should check with their IT department or the app's documentation to determine if zip files are allowed.

• If the zip file contains a potentially harmful file type, the app may block it from being opened.

There are 5 types of inheritance in object-oriented programming.

• Single inheritance: a subclass inherits from a single superclass.

• Multiple inheritance: a subclass inherits from multiple superclasses.

• Multilevel inheritance: a subclass inherits from a superclass, which in turn inherits from another superclass.

• Hierarchical Inheritance: multiple subclasses inherit from a single superclass.

• Hybrid inheritance: a combination of multiple and multilevel inheritance.

There are several types of Google mapping, including Google Maps, Google Earth, and Google Street View.

• Google Maps is a web-based mapping service that provides directions, traffic information, and satellite imagery.

• Google Earth is a virtual globe that allows users to explore the Earth's surface using satellite imagery and aerial photography.

• Google Street View provides panoramic views of streets and locations using 360-degree street-level imagery.

• Other types of Google mapping ...read more

Recursion is a technique of solving a problem by breaking it down into smaller subproblems. Dynamic programming is a method of solving a problem by breaking it down into smaller subproblems and storing the solutions to those subproblems to avoid redundant calculations.

• Recursion involves solving a problem by breaking it down into smaller subproblems and calling the function recursively until the base case is reached.

• Dynamic programming involves solving a problem by breaking it...read more

To rectify data recovery, dual monitor connection, check cables, update drivers, and use data recovery software.

• Check cables and connections for dual monitor setup

• Update drivers for graphics card and monitor

• Use data recovery software to recover lost data

• Ensure proper backup procedures are in place to prevent data loss

Ratio of ages of Raj and Sakshi is 8:7 and their sum is 60. Find their ratio after 6 years.

• Let the ages of Raj and Sakshi be 8x and 7x respectively

• Their sum is 60, so 15x = 60

• Hence, x = 4

• After 6 years, Raj's age will be 8x+6 and Sakshi's age will be 7x+6

• The ratio of their ages after 6 years will be (8x+6):(7x+6)

To make a thread safe object in Java, use synchronization or locks.

• Use synchronized keyword to ensure only one thread can access the object at a time.

• Use locks to provide more fine-grained control over synchronization.

• Use thread-safe data structures like ConcurrentHashMap or AtomicInteger.

• Avoid using static variables or mutable shared state.

• Consider using immutable objects or thread-local variables.

• Test the thread safety of your code using tools like JUnit or stress testing.

• D...read more

Incidents can trigger changes to prevent future incidents.

• Incidents can reveal weaknesses in the system that require changes to prevent future incidents.

• Changes can also cause incidents if not properly managed.

• Incident and change management processes should be closely integrated.

• For example, a major incident caused by a software bug may require a change to the code to prevent it from happening again.

• Similarly, a change to a server configuration may cause an incident if not pr...read more

DDOS attack is a malicious attempt to disrupt normal traffic of a targeted server or network by overwhelming it with a flood of internet traffic.

• DDOS stands for Distributed Denial of Service

• Attackers use multiple devices to send a huge amount of traffic to the target server or network

• It can cause the server or network to crash or become unavailable to legitimate users

• Prevention measures include using firewalls, load balancers, and DDOS mitigation services

Printers are output devices that produce hard copy output from computers. There are several types of printers.

• Types of printers include inkjet, laser, thermal, and dot matrix.

• Inkjet printers use liquid ink sprayed through microscopic nozzles onto paper.

• Laser printers use toner powder and heat to fuse the toner onto paper.

• Thermal printers use heat to transfer ink onto paper.

• Dot matrix printers use a print head that strikes an ink ribbon to create dots on paper.

• Printers can als...read more

Encapsulation is hiding implementation details while polymorphism is using a single interface for multiple types.

• Encapsulation is achieved through access modifiers like private, protected, and public.

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

• Encapsulation is about data hiding and abstraction while polymorphism is about behavior.

• Example of encapsulation: a class with private variables and public methods to access them.

• Examp...read more

Firewalls and application gateways are both security measures used to protect networks, but they differ in their approach.

• Firewalls are network security systems that monitor and control incoming and outgoing network traffic based on predetermined security rules.

• Application gateways, also known as application-level gateways or application layer firewalls, operate at the application layer of the OSI model and can inspect and filter traffic based on the specific application bein...read more

Program to check if two given matrices are identical

• Check if the dimensions of both matrices are same

• Iterate through each element of both matrices and compare them

• If all elements are same, matrices are identical

I would take the initiative to learn the new programming language as quickly as possible.

• Research the best resources for learning the language

• Practice coding in the new language regularly

• Seek guidance and mentorship from experienced programmers

• Attend workshops and conferences to enhance knowledge

• Apply the new language in real-world projects to gain experience

Keywords for thread safe program in Java

• Synchronization using synchronized keyword

• Using volatile keyword for shared variables

• Using atomic classes for thread safe operations

• Using thread safe collections like ConcurrentHashMap

• Using locks and semaphores for synchronization

• Avoiding shared mutable state

• Using immutable objects

• Using thread local variables

MS Excel can store various types of data including numbers, text, dates, and formulas.

• Numeric data such as sales figures, budgets, and inventory levels

• Text data such as customer names, product descriptions, and employee information

• Date and time data such as order dates, delivery dates, and project deadlines

• Formulas and functions for calculations and data analysis

• Charts and graphs for visual representation of data

I am comfortable with multiple programming languages including Java, Python, and C++.

• Proficient in Java, Python, and C++

• Experience with web development languages such as HTML, CSS, and JavaScript

• Familiarity with database languages such as SQL

• Comfortable with object-oriented programming and software development principles

To create a test environment for testers in a dev and prod setup, we can follow the ALM process.

• Create a separate branch from the dev environment codebase for testing purposes

• Deploy the branch to a separate environment for testing

• Once testing is complete, merge the branch back into the dev environment

• Deploy the updated dev environment to the prod environment

• Ensure proper version control and documentation throughout the process

AL/ML are Artificial Intelligence and Machine Learning respectively. AL is a broader term while ML is a subset of AL.

• AL involves creating intelligent machines that can perform tasks without human intervention

• ML is a subset of AL that involves training machines to learn from data and improve their performance

• AL includes various techniques such as rule-based systems, expert systems, and natural language processing

• ML includes techniques such as supervised learning, unsupervised ...read more

Answering questions related to project, SQL commands, and programming languages.

• Project involved developing a web application using Java and MySQL database.

• DDL commands in SQL are used to define the structure of a database.

• C++ is a compiled language while Java is an interpreted language.

• Primary key uniquely identifies a record while foreign key establishes a relationship between two tables.

• Joins in SQL are used to combine data from two or more tables based on a related column...read more

Zoning is a method of dividing a storage area network (SAN) into smaller, isolated sections to improve performance and security.

• Zoning is used to control access to specific resources within a SAN.

• It can be done at the port level, device level, or WWN level.

• Zoning can be hard or soft, depending on whether it is enforced by hardware or software.

• Upgrading a SAN may require changes to zoning configurations to accommodate new hardware or software.

• I have been part of SAN upgrades t...read more

GPS in mapping is a technology that uses satellites to determine location. Pinpoint is the exact location on a map.

• GPS stands for Global Positioning System and uses satellites to determine location

• Pinpoint is the exact location on a map, often marked with a pin or marker

• GPS in mapping allows for accurate navigation and location tracking

• Examples of GPS mapping applications include Google Maps and Waze

Transition Manager interview questions on choosing transition management, RFP/RFI process, transition duration calculation, FTE count, and general problems faced during execution.

• I chose Transition Management because of my interest in managing change and ensuring smooth transitions.

• RFP/RFI process involves creating a request for proposal or information to solicit bids from vendors, evaluating the responses, and selecting the best fit.

• Transition duration can be calculated by c...read more

To pull specific data from a table based on given conditions, use SQL SELECT statement with WHERE clause.

• Identify the table and columns containing the data

• Specify the conditions using operators such as =, >, <, LIKE, etc.

• Use SELECT statement with WHERE clause to retrieve the data

• Example: SELECT * FROM table_name WHERE column_name = 'condition'

• Use AND or OR operators to combine multiple conditions

Default Gateway is the IP address of the router that connects a device to other networks. We can track packet path using Traceroute.

• Default Gateway is the first point of contact for a device when it tries to connect to other networks.

• It acts as a mediator between the device and other networks.

• It helps in routing the traffic to the correct destination.

• Traceroute is a tool that can be used to track the path of a packet going to its destination.

• It works by sending packets with i...read more

NLP stands for Natural Language Processing. It is a field of study that focuses on making computers understand human language.

• NLP involves teaching computers to understand and interpret human language, both written and spoken.

• It is used in various applications such as chatbots, virtual assistants, and language translation software.

• NLP uses techniques such as sentiment analysis, named entity recognition, and part-of-speech tagging to analyze and understand language.

• Examples of...read more

Yes, I am willing to sign the service bonds.

• I understand the importance of service bonds in ensuring job security and commitment to the company.

• I am confident in my abilities to fulfill the responsibilities of the Project Engineer role and am committed to staying with the company for the duration of the bond.

• I am open to discussing the terms and conditions of the bond before signing.

No, not all inheritance is applicable in Python.

• Python supports single inheritance, where a class can inherit from only one parent class.

• Multiple inheritance is also possible, but it can lead to the diamond problem.

• Python also supports multilevel inheritance, where a class can inherit from a parent class, which in turn can inherit from another parent class.

• Inheritance can be used to reuse code and create a hierarchy of classes.

• Example: class B inherits from class A - class B(...read more

Mortgage value refers to the monetary worth of a property that is used as collateral for a loan.

• Mortgage value is the assessed value of a property that determines the maximum loan amount a borrower can obtain.

• It is based on factors such as the property's location, size, condition, and market trends.

• Lenders typically lend a percentage of the mortgage value, known as loan-to-value ratio.

• For example, if a property's mortgage value is $200,000 and the lender offers an 80% loan-to...read more

I prefer Python for its simplicity and versatility.

• Python is easy to learn and has a large community for support.

• It can be used for a variety of tasks such as web development, data analysis, and automation.

• Python also has many libraries and frameworks available for use.

• Other languages I am familiar with include Java and C++.

Passcode and PIN are both used for authentication, but they differ in their length and complexity.

• A passcode is typically longer than a PIN and can include letters, numbers, and symbols.

• A PIN is usually a 4-6 digit number.

• Passcodes are generally considered more secure than PINs.

• Examples of passcodes include the password for your email account or the code to unlock your phone.

• Examples of PINs include the code to access your bank account or the PIN to unlock your SIM card.

Reverse each word of a given string.

• Split the string into words using space as a delimiter.

• Reverse each word using built-in functions or loops.

• Join the reversed words to form the final string.

Bubble sort has a time complexity of O(n^2). It can be optimized by adding a flag to check if any swaps were made.

• Bubble sort compares adjacent elements and swaps them if they are in the wrong order.

• It repeats this process until the array is sorted.

• Adding a flag to check if any swaps were made can reduce the time complexity to O(n) in the best case.

• However, in the worst case, it still has a time complexity of O(n^2).

Access specifiers are keywords in object-oriented programming languages that determine the visibility of class members.

• Access specifiers are used to restrict access to class members.

• There are three access specifiers: public, private, and protected.

• Public members can be accessed from anywhere in the program.

• Private members can only be accessed within the class.

• Protected members can be accessed within the class and its subclasses.

• Example: class MyClass { public: int x; private:...read more

Service catalog, order guide, and record producer are different components in ServiceNow for managing and fulfilling service requests.

• Service catalog is a centralized repository of services that users can request.

• Order guide is a collection of related services grouped together for easy selection and ordering.

• Record producer is a form-based interface that allows users to create records in different tables.

• Service catalog provides a self-service portal for users to browse and r...read more

Overloading is when multiple methods have the same name but different parameters, while overriding is when a subclass provides a specific implementation of a method already defined in its superclass.

• Overloading is compile-time polymorphism, while overriding is runtime polymorphism.

• Overloading is achieved within the same class, while overriding occurs between a superclass and its subclass.

• Overloading is used to provide different ways of calling the same method, while overridin...read more

Saving account is for saving money and earning interest while current account is for frequent transactions.

• Saving account earns interest while current account does not.

• Saving account has a limit on the number of transactions while current account does not.

• Current account is meant for frequent transactions while saving account is not.

• Saving account has a higher interest rate than current account.

• Examples of saving accounts include fixed deposit accounts, recurring deposit acco...read more