Niu Aurora Tech Innovations Interview Questions and Answers

Q1. Sorting objects based on keys ruby
Ans. 
In Ruby, you can sort objects based on keys using the sort_by method.
• Use the sort_by method with a block to specify the key to sort by.

• For example, sorting an array of hashes by a specific key: array_of_hashes.sort_by { |hash| hash['key_to_sort_by'] }

• You can also sort objects by multiple keys by chaining sort_by calls.
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Q2. Frequency of arr elements
Ans. 
Calculate the frequency of elements in an array
• Iterate through the array and count occurrences of each element

• Use a hash map to store element frequencies

• Return the hash map with element frequencies
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Q1. Introduction about me, info about the previously worked projects
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Q2. Pick an random number from an array using random function and two pointer approach
Ans. 
Use random function and two pointer approach to pick a random number from an array of strings.
• Initialize two pointers at the start and end of the array

• Generate a random index between the two pointers

• Return the element at the random index
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Q1. What is SDLC and STLC?
Ans. 
SDLC stands for Software Development Life Cycle, which is a process used by software development teams to design, develop, and test high-quality software products. STLC stands for Software Testing Life Cycle, which is a subset of SDLC focused on testing activities.
• SDLC involves planning, designing, coding, testing, and deployment stages.

• STLC involves test planning, test design, test execution, and test closure stages.

• S...read more
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Q2. Explain Bug life cycle
Ans. 
Bug life cycle is the process of a bug from identification to resolution in software testing.
• Bug is identified by tester

• Bug is logged in bug tracking tool

• Bug is assigned to developer

• Developer fixes the bug

• Bug is retested by tester

• If bug is fixed, it is closed. If not, it is reopened

• Bug is verified in subsequent releases
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Q1. Diff between react and jQuery
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React is a modern JavaScript library for building user interfaces, while jQuery is a fast and concise JavaScript library for DOM manipulation.
• React is component-based, promoting reusability and modularity.

• React uses a virtual DOM for efficient updates, while jQuery directly manipulates the DOM.

• React is declarative, making it easier to reason about the UI, while jQuery is imperative.

• React is typically used for single-pa...read more
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3 dsa questions medium level

Q1. 2 medium level dp questions based on string and stocks
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Q2. One hard question based on graph
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Q1. Hr questions and java , springboot questions etc
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Q1. Education Related Questions for Technical.
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Q2. Previous Company Tech Experience available or not.
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Q3. Family Background
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Q4. Technical Questions for Remote Tech Support of Installation of Software.
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Q1. How will you prioritize testing ?
Ans. 
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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Technical Aptitude on singalton pattern

Q1. What is man in middle attack?
Ans. 
A man-in-the-middle attack is a cyber security attack where the attacker secretly intercepts and possibly alters the communication between two parties.
• Attacker intercepts communication between two parties

• Attacker may alter the communication

• Commonly occurs in public Wi-Fi networks

• Can lead to data theft or unauthorized access
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Q2. How to protect api?
Ans. 
Protecting API involves using authentication, authorization, encryption, rate limiting, and monitoring.
• Implement authentication mechanisms such as OAuth, JWT, or API keys

• Use authorization to control access to different parts of the API

• Encrypt sensitive data using SSL/TLS

• Implement rate limiting to prevent abuse and protect against DDoS attacks

• Monitor API traffic for unusual activity and potential security threats
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Q3. Whats is csrf ?
Ans. 
CSRF stands for Cross-Site Request Forgery, a type of attack where a malicious website tricks a user into performing actions on another website without their knowledge.
• CSRF attacks exploit the trust that a site has in a user's browser, by sending unauthorized requests using the user's session.

• Prevent CSRF attacks by using tokens in forms, checking the origin of requests, and implementing proper authentication and autho...read more
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Q1. Why you want ti join airpay?
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Q2. Why you leave current organisation?
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Aptitude test of 4 level

Q1. Tell me about yourself
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Q2. What do you about policyx.com or insurance
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Q1. What do you know about insurance
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Q2. If experience than previous work profile
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Q1. What is your method of working
Ans. 
My method of working is organized, efficient, and detail-oriented.
• I prioritize tasks based on deadlines and importance

• I create detailed to-do lists and schedules to stay on track

• I regularly communicate with team members to ensure everyone is on the same page
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Q2. What payment are you demanding?
Ans. 
The payment being demanded depends on the outstanding balance and payment terms.
• The payment being demanded should be based on the outstanding balance owed by the debtor.

• Consider the payment terms agreed upon by both parties when determining the payment to be demanded.

• It is important to communicate clearly and professionally with the debtor regarding the payment being demanded.

• Provide options for payment plans or negoti...read more
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