Microsoft Corporation Interview Questions, Process, and Tips

1 hour test contains 2 coding questions.

Q1. Delete a node from Singly and doubly linked list
Ans. 
To delete a node from a singly or doubly linked list, update the pointers of the previous and next nodes.
• For a singly linked list, update the next pointer of the previous node to skip the node to be deleted.

• For a doubly linked list, update the next pointer of the previous node and the previous pointer of the next node to skip the node to be deleted.
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Q2. Validate an email using regex pattern
Ans. 
Use regex pattern to validate an email address
• Use regex pattern /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/

• Ensure email has valid format with username, @ symbol, domain, and top-level domain

• Test regex pattern against different email addresses for validation
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Q1. What is a comprehensive introduction to data centers and how do they operate?
Ans. 
Data centers are facilities that house computer systems and associated components, such as telecommunications and storage systems.
• Data centers are used to store, process, and distribute large amounts of data.

• They typically consist of servers, networking equipment, storage systems, and power and cooling infrastructure.

• Data centers can be private, owned and operated by a single organization, or public, where multiple org...read more
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Q2. Deep Network connection & rack power supply unit in data center
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Deep network connections and rack power supply units are essential components in a data center for ensuring reliable and efficient operations.
• Deep network connections refer to high-speed, low-latency connections between network devices within the data center.

• Rack power supply units are used to provide power to servers and networking equipment housed in the data center racks.

• Proper management and maintenance of network ...read more
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Online coding test of 45 mins

Q1. BFS/DFS graph problem
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Q2. Inverted array problem
Ans. 
Inverted array problem involves reversing the order of elements in an array of strings.
• Iterate through the array from both ends and swap the elements until reaching the middle.

• Use a temporary variable to store the element being swapped.

• Example: Input array ['apple', 'banana', 'cherry'] should be inverted to ['cherry', 'banana', 'apple'].
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Q1. LLD design of order collection service
Ans. 
LLD design of order collection service involves designing the detailed architecture of the service for collecting orders.
• Define the components of the order collection service such as order processing, validation, storage, and retrieval.

• Design the data flow between these components and how they interact with each other.

• Consider scalability, fault tolerance, and performance optimization in the design.

• Use appropriate desi...read more
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Q2. How two arrays represented as trees are identical trees
Ans. 
Two arrays represented as trees are identical if they have the same structure and values at each node.
• Check if the arrays have the same length.

• Compare the root nodes of both trees.

• Recursively compare the left and right subtrees of both trees.
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Q1. Where you wanna see you after 5 years
Ans. 
I see myself as a respected leader in the field, leading a team of skilled professionals and making significant contributions to the company's success.
• Leading a team of SDETs and QA engineers

• Implementing innovative testing strategies and automation techniques

• Mentoring junior team members and helping them grow in their careers

• Contributing to the development of cutting-edge products and technologies
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Q2. Sun is red or blue
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Sorting strings with iron rod