Fidelity Investments Sdet Interview Questions and Answers

Yes, the string class can be extended in most programming languages.

• Inheritance can be used to extend the functionality of the string class.

• By creating a new class that inherits from the string class, additional methods and properties can be added.

• Extending the string class allows for customization and adding specific functionality to strings.

• Example: In Python, the string class can be extended by creating a new class ...read more

Implicit objects in JSP are predefined objects that are available for use without any declaration or initialization.

• Implicit objects in JSP include request, response, session, application, out, config, pageContext, page, exception, and others.

• These objects provide access to various aspects of the JSP environment and can be used to perform common tasks.

• For example, the request object allows access to HTTP request parame...read more

A hash map is a data structure that uses a hash function to map keys to values.

• Hash map stores key-value pairs

• It uses a hash function to compute an index for each key

• Collisions can occur when two keys hash to the same index

• Hash maps provide fast access to values based on their keys

StringBuffer and StringBuilder are both used to manipulate strings, but StringBuffer is thread-safe while StringBuilder is not.

• StringBuffer is synchronized, making it safe for use in multi-threaded environments.

• StringBuilder is not synchronized, making it faster but not thread-safe.

• StringBuffer is preferred when multiple threads are involved, while StringBuilder is preferred for single-threaded scenarios.

• Both classes p...read more

Annotations used in RESTful web services

• 1. @Path - Specifies the URI path for the resource

• 2. @GET - Specifies that the method handles HTTP GET requests

• 3. @POST - Specifies that the method handles HTTP POST requests

• 4. @PUT - Specifies that the method handles HTTP PUT requests

• 5. @DELETE - Specifies that the method handles HTTP DELETE requests

• 6. @PathParam - Binds the value of a URI template parameter to a method paramete...read more

Advise the nimbu paani wala on how to start saving for the future.

• Encourage him to set a savings goal and create a budget to achieve it.

• Suggest he start small by saving a small percentage of his daily income.

• Recommend he explore investment options to grow his savings over time.

• Remind him to continue setting aside enough money for his daily expenses.

• Provide resources or education on financial literacy to help him make i...read more

To expand into more countries, the IT sector multinational can adopt a market entry strategy that includes market research, partnerships, localization, and scalability.

• Conduct thorough market research to identify potential countries for expansion

• Establish strategic partnerships with local companies to leverage their knowledge and networks

• Adapt products and services to meet the specific needs and preferences of each tar...read more

A metric to rank Indian cities for BPOs

• Consider factors like availability of skilled workforce, infrastructure, cost of living, and government policies

• Weight each factor based on its importance to the company

• Collect data on each factor for different cities and assign scores

• Rank cities based on their total score

• Examples of factors: number of universities, quality of transportation, cost of office space, tax incentives

• Re...read more

The probable reasons for manufacturing stoppages due to parts unavailability in an auto company in India and suggested solutions.

• Probable reasons: supply chain disruptions, inventory management issues, quality control problems, lack of communication with suppliers

• Investigate by analyzing historical data, conducting supplier audits, implementing real-time tracking systems

• Solutions: improve forecasting accuracy, establis...read more

The exact number of airplanes flying in the Indian sky at the moment is not available.

• The number of airplanes flying in the Indian sky changes constantly.

• It depends on factors such as time of day, weather conditions, and airline schedules.

• However, on average, there are around 2,000 flights in the Indian airspace at any given time.

• This number includes both domestic and international flights.

• The Indian aviation industry ...read more

I prefer to focus on analytical skills and data-driven decision-making rather than pursuing an MBA for broader business management.

• Analytical roles require deep data analysis skills, which an MBA may not emphasize as much.

• I am passionate about using data to drive decisions, like optimizing marketing strategies based on customer behavior analytics.

• I believe in developing specialized expertise, such as in data science or...read more

Code for rand7 using rand5 function

• Use rand5 twice to generate a number in [1,25] with equal probability

• If the number is greater than 21, discard and try again

• Otherwise, return (number mod 7) + 1

I am interested in a career in banking because of the opportunities for growth, the dynamic nature of the industry, and my passion for financial analysis.

• Opportunities for growth: Banking offers a wide range of career paths and opportunities for advancement. I am excited about the potential to develop my skills and progress within the industry.

• Dynamic nature of the industry: Banking is constantly evolving, with new tec...read more

The Indian economy has experienced mixed performance in the past 2 years.

• GDP growth rate has fluctuated

• Demonetization and GST implementation impacted the economy

• Unemployment rate has been a concern

• Inflation has remained relatively low

• Foreign direct investment has increased

• Agricultural sector faced challenges due to weather conditions