Greenbucks Securities Interview Questions and Answers

They asked basic aptitude questions on probability, compound interests,...

Q1. Detailing on Storage classes
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Q2. Applications of OSI layers
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The OSI layers are used to define the different functions of a network communication system.
• The OSI model consists of 7 layers, each with specific functions.

• Application layer (Layer 7) handles high-level protocols, such as HTTP and FTP.

• Transport layer (Layer 4) ensures end-to-end communication and error-checking.

• Network layer (Layer 3) deals with routing and forwarding of data packets.

• Data link layer (Layer 2) manages ...read more
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Q3. Bitwise operations
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Q1. Check string is substring of other or not
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Check if a string is a substring of another string
• Use the 'includes' method in JavaScript to check if a string is a substring of another string

• Iterate through an array of strings and use 'includes' to check for substrings

• Consider case sensitivity when checking for substrings
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Q2. Transpose of matrix
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Transpose of a matrix involves swapping rows with columns.
• To transpose a matrix, swap the rows with the columns.

• The transpose of a matrix A with dimensions m x n is a new matrix B with dimensions n x m.

• Example: If A = [[1, 2], [3, 4]], then the transpose of A is B = [[1, 3], [2, 4]].
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Mathematical questions similar to CAT DILR

Q1. Breakeven analysis for term life insurance policy
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Q1. How Performance of application can be improved
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Performance of an application can be improved by optimizing code, using efficient algorithms, caching data, and scaling resources.
• Optimize code by reducing unnecessary loops, improving database queries, and minimizing memory usage

• Use efficient algorithms like binary search instead of linear search for large datasets

• Implement caching mechanisms to store frequently accessed data and reduce database calls

• Scale resources b...read more
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Q1. How will you prioritize testing ?
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I prioritize testing based on criticality, impact, dependencies, and risks involved.
• Identify critical functionalities and prioritize testing for them first

• Consider impact on end users and prioritize testing for high impact areas

• Take into account dependencies between different modules or components

• Assess risks involved and prioritize testing for high-risk areas

• Use risk-based testing approach to prioritize test cases
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Q2. Test cases for Landline
Ans. 
Test cases for Landline phone functionality
• Test dialing a number and making a call

• Test receiving a call and answering it

• Test call waiting functionality

• Test call forwarding feature

• Test voicemail functionality
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Q1. SQL question on joins and subqueries?
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Q2. Earlier project questions ?
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It was Machine test, i had to make a project and connect it to Database and submit details in database table from form.

Q1. Technical verbal Interview, question were related to JavaScript, Json, JQuery, and how to perform click and other event on click, on change etc, and how to get text content entered in text box, mostly rel...read more
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Q2. What is Collection Framework?
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Collection Framework is a unified architecture for representing and manipulating collections of objects in Java.
• It provides interfaces (List, Set, Queue, etc.) and classes (ArrayList, HashSet, PriorityQueue, etc.) to store and manipulate groups of objects.

• Collections can be easily sorted, searched, and iterated using methods provided by the Collection Framework.

• Example: ArrayList is a class that implements the List int...read more
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Q3. What is RestApi?
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RestApi is a set of rules and conventions for building and interacting with web services using HTTP methods.
• RestApi stands for Representational State Transfer Application Programming Interface.

• It allows communication between different software systems over the internet.

• RestApi uses standard HTTP methods like GET, POST, PUT, DELETE for data manipulation.

• JSON or XML formats are commonly used for data exchange in RestApi.

• ...read more
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Q4. How to add one ArrayList object to another, which method is used to achieve this. Ans:- By using addAll() Method

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The addAll() method is used to add all elements of one ArrayList to another.

• Use the addAll() method to add all elements of one ArrayList to another

• Syntax: list1.addAll(list2);

• Example: ArrayList list1 = new ArrayList<>(); list1.addAll(Arrays.asList(1, 2, 3));

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