Phenom Interview Questions, Process, and Tips for Experienced

Q1. How to find Path from Root to any node in Binary Tree
Ans. 
To find the path from the root to any node in a binary tree, perform a depth-first search and keep track of the path taken.
• Perform a depth-first search starting from the root node

• Keep track of the path taken using a stack or array

• When the target node is found, the path will be stored in the stack or array
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Q2. Reverse a String using recursion.
Ans. 
Reverse a string using recursion
• Create a recursive function that takes a string as input

• Base case: if the string is empty, return an empty string

• Recursive case: return the last character of the string concatenated with the result of calling the function on the substring excluding the last character
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Q3. What is SingleTon and how to make it Non-Clonable
Ans. 
Singleton is a design pattern that restricts the instantiation of a class to one object and provides a global point of access to that instance.
• Ensure private constructor to prevent instantiation of multiple objects.

• Provide a static method to access the single instance.

• Use a static variable to hold the single instance.

• Implement a private clone method to prevent cloning of the instance.
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Q1. Design a CRM tool for HR's and Job Seekers. with features like 1.Profile Management 2.Job Application Tracking 3.Job Posting and Searching 4.Scalable and Database Design 5.Handling large data base and lat...read more
Ans. 
A CRM tool for HR's and Job Seekers with features like Profile Management, Job Application Tracking, Job Posting and Searching, Scalable Database Design, and Handling large database and latency.
• Implement user-friendly interface for profile management with options to update personal information, skills, and experience.

• Create a dashboard for job seekers to track their job applications, including status updates and interv...read more
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Q2. How to handle fault tolearnace ? Monitoring and logging using Prometheus, Grafana and ELK (elastic search,Logstash,Kibana). Ensure Redundancy and fail over mechanisms.
Ans. 
Handling fault tolerance involves monitoring and logging with Prometheus, Grafana, and ELK, as well as implementing redundancy and failover mechanisms.
• Implement health checks to monitor the status of services and applications

• Set up alerts and notifications for abnormal behavior or failures

• Use Prometheus for metric collection and Grafana for visualization of data

• Utilize ELK stack for centralized logging and analysis of ...read more
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Q3. DId you use Kubernetes and how do you tell kubernetes to have n number of instances up all the time?
Ans. 
Yes, Kubernetes can be used to manage n number of instances by defining the desired number in the deployment configuration.
• Define the desired number of instances in the 'replicas' field of the deployment configuration.

• For example, setting 'replicas: 3' will ensure that Kubernetes maintains 3 instances of the application running at all times.

• Kubernetes will automatically scale the number of instances up or down based on
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Create a recursive directory with checkboxes in React.js.

Q1. What are the requirements for developing a search component in React JS that can efficiently search through millions of words, and what approach should be taken to achieve this?
Ans. 
To develop a search component in React JS for efficient searching through millions of words, consider using a trie data structure and implementing features like autocomplete and fuzzy search.
• Utilize a trie data structure for efficient searching through large datasets.

• Implement features like autocomplete to provide suggestions as the user types.

• Incorporate fuzzy search to allow for more flexible and forgiving search que...read more
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Q1. Basic java and spring boot
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Q2. Design principles
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Q1. LRU cache program
Ans. 
LRU cache program is a data structure that stores the most recently used items.
• LRU cache is typically implemented using a doubly linked list and a hashmap.

• When a new item is accessed, it is moved to the front of the list.

• If the cache is full, the least recently used item is removed from the end of the list.

• Example: If the cache has a capacity of 3 and items A, B, C are accessed in that order, the cache will store C, B,...read more
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Q2. DBMS Locking exmple with a scenario
Ans. 
DBMS locking is a mechanism to manage concurrent access to data in a database to prevent data corruption.
• Locking is used to ensure data integrity and consistency in a multi-user environment.

• Types of locks include shared locks, exclusive locks, and update locks.

• Example scenario: Two users trying to update the same record simultaneously - one user gets an exclusive lock while the other waits.

• Deadlocks can occur when two ...read more
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Q1. Introducing ourselves through selfie video
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Q2. How could you be of an asset to our organization ?
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Q1. What is the toughest challenge faced with customer in recent times
Ans. 
The toughest challenge faced with customers in recent times is managing high call volumes and long wait times.
• Managing high call volumes and long wait times

• Ensuring timely resolution of customer issues

• Maintaining customer satisfaction despite the challenges

• Balancing workload and resources effectively

• Implementing efficient call routing and queuing systems

• Providing clear communication and updates to customers
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Q2. What is the process followed to better engage with customers ?
Ans. 
To better engage with customers, the process involves active listening, clear communication, personalized interactions, prompt responses, and continuous improvement.
• Active listening: Paying attention to customer needs and concerns.

• Clear communication: Using simple and concise language to avoid confusion.

• Personalized interactions: Tailoring the support to meet individual customer requirements.

• Prompt responses: Providing...read more
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Q1. How could you resolve the troubleshooting issues?
Ans. 
I would resolve troubleshooting issues by following a systematic approach and utilizing my technical knowledge and problem-solving skills.
• Identify the problem by gathering information from the user

• Analyze the symptoms and possible causes

• Perform diagnostic tests to narrow down the issue

• Apply known solutions or troubleshoot step-by-step

• Document the troubleshooting process and solution for future reference

• Provide clear an...read more
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Q2. What troubleshooting tools were used by you earlier in your previous responsibility ?
Ans. 
I have used various troubleshooting tools in my previous responsibility as a Technical Support Lead.
• Network diagnostic tools like ping, traceroute, and nslookup

• Remote desktop tools like TeamViewer and AnyDesk

• System monitoring tools like Task Manager and Resource Monitor

• Log analysis tools like Event Viewer and Log Parser

• Hardware diagnostic tools like memtest86 and CPU-Z

• Software debugging tools like Visual Studio Debugge
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Q1. What is the reason for you leaving your present organization ?
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Q2. What is your expected CTC?
Ans. 
I expect a competitive salary based on my experience, skills, and the responsibilities of the Technical Support Lead role.
• I have researched the average salary range for Technical Support Lead positions in the industry.

• I have considered my years of experience and expertise in technical support.

• I have taken into account the level of responsibility and leadership required for the role.

• I am open to negotiation based on the...read more
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