30+ Interview Questions and Answers

Pressing 'k' on Notepad triggers a series of events including key press event, character insertion, and potential text manipulation.

• When 'k' is pressed, a key press event is triggered

• The key press event is captured by the Notepad application

• The character 'k' is inserted at the current cursor position

• If any text is selected, it may be replaced by the character 'k'

• The cursor position is updated to the next position

• If auto-save is enabled, the document may be saved

LRU (Least Recently Used) is a caching algorithm that removes the least recently used item when the cache is full.

• LRU uses a combination of a doubly linked list and a hash map.

• The doubly linked list keeps track of the order of recently used items.

• The hash map allows for efficient lookup of items in the cache.

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

• If the cache is full, the item at the end of the list is evicted.

The proper paper for legal clearing is typically a legal clearance form or document.

• Legal clearance forms or documents are necessary to ensure compliance with legal requirements.

• These papers may include background checks, consent forms, and legal agreements.

• Examples of proper papers for legal clearing may include a signed non-disclosure agreement, a background check report, or a consent form for data processing.

PUT is used to update an existing resource, POST is used to create a new resource, PATCH is used to update a part of an existing resource.

• PUT replaces the entire resource with the new one

• POST creates a new resource with a new URI

• PATCH updates a part of the existing resource

• PUT and POST are idempotent, PATCH is not

• PUT and PATCH are safe, POST is not

Developed a project using the concept of operating systems to optimize resource allocation and improve performance.

• Implemented process scheduling algorithms like Round Robin and Priority Scheduling.

• Utilized memory management techniques such as paging and segmentation.

• Used synchronization mechanisms like semaphores and mutexes to prevent race conditions.

Peak element in rotated sorted array

• Peak element is greater than its neighbors

• Binary search can be used to find peak element

• Consider edge cases like array with only one element or no peak element

Array is a fixed size collection of elements while ArrayList is a dynamic collection that can grow or shrink.

• Arrays are faster and more memory efficient than ArrayLists.

• Arrays can only store elements of the same data type while ArrayLists can store any type of object.

• ArrayLists have built-in methods for adding, removing, and sorting elements while arrays require manual manipulation.

• Arrays are typically used for small collections with a fixed size while ArrayLists are used for...read more

Docker is a platform for developing, shipping, and running applications in containers.

• Docker allows developers to package an application and its dependencies into a container that can run on any system.

• Containers are lightweight, standalone, and executable packages that include everything needed to run a piece of software.

• Docker provides tools for managing containers, such as Docker Engine for building and running containers, Docker Compose for defining multi-container applic...read more

Implement stack using queue by using two queues and maintaining the order of elements.

• Use two queues to simulate stack operations - push, pop, top.

• For push operation, add element to queue1.

• For pop operation, move all elements from queue1 to queue2 except the last one, then remove and return the last element.

• For top operation, move all elements from queue1 to queue2 except the last one, then return the last element without removing it.

I analyse contracts by reviewing terms, conditions, pricing, and legal implications.

• Review all terms and conditions outlined in the contract

• Analyze pricing structures and payment terms

• Assess legal implications and obligations for both parties

• Ensure compliance with company policies and regulations

• Negotiate any necessary changes or amendments

Khatas are types of traditional account books used in India for maintaining financial records.

• Khatas are commonly used in businesses like retail shops, grocery stores, and small-scale enterprises.

• There are different types of khatas based on the purpose and format, such as Bahi Khata, Ledger Khata, and Cash Book Khata.

• Bahi Khata is a general-purpose account book used for recording daily transactions and maintaining customer accounts.

• Ledger Khata is a more detailed account book...read more

The left view of a binary tree shows the nodes that are visible when looking at the tree from the left side.

• The left view of a binary tree can be obtained by performing a level order traversal and keeping track of the first node at each level.

• Example: For a binary tree with root node 1, left child 2, and right child 3, the left view would be [1, 2].

The expected CTC for the Operations Buyer position is negotiable based on experience and qualifications.

• Expected CTC will depend on the candidate's level of experience in procurement and operations.

• Qualifications such as certifications or relevant degrees may impact the offered CTC.

• Negotiation skills can also play a role in determining the final CTC.

• Research industry standards for Operations Buyer roles to get an idea of the expected salary range.

Excel is a spreadsheet program used for data analysis and organization, while Power BI is a business analytics tool for visualizing data.

• Excel is used for creating spreadsheets, organizing data, and performing calculations.

• Power BI is a business analytics tool that allows users to visualize and share insights from their data.

• Excel can be used to create charts, graphs, and pivot tables to analyze data.

• Power BI connects to various data sources to create interactive reports and ...read more

Softlinks are pointers to the original file while hardlinks are direct references to the file's inode.

• Softlinks are symbolic links that point to the original file by its path.

• Hardlinks are direct references to the file's inode on the disk.

• Softlinks can span across different file systems while hardlinks cannot.

• If the original file is deleted, softlinks become broken but hardlinks still point to the file data.

• Softlinks have different inode numbers and permissions, while hardlin...read more

The coin change problem involves finding the minimum number of coins needed to make a certain amount of change.

• Use dynamic programming to solve this problem efficiently.

• Start by creating a table to store the minimum number of coins needed for each amount from 0 to the target amount.

• Iterate through each coin denomination and update the table accordingly.

• Return the value in the table corresponding to the target amount as the minimum number of coins needed.

STL (Standard Template Library) is a library of generic algorithms, data structures, and iterators in C++. Collections in Java are interfaces and classes that represent data structures.

• STL in C++ provides containers like vectors, lists, maps, etc. for storing data and algorithms for manipulating them.

• Collections in Java include interfaces like List, Set, Map, and classes like ArrayList, HashSet, HashMap, etc.

• STL is part of the C++ standard library, while Collections are part ...read more

DEED stands for Deed of Trust, Deed of Reconveyance, and Deed of Release.

• Deed of Trust is a legal document used in real estate transactions.

• Deed of Reconveyance is a document that transfers the title of property from a trustee back to the borrower.

• Deed of Release is a document that releases a lien on a property.

Sort zeroes to end of array

• Iterate through the array and move all zeroes to the end

• Use two pointers approach to swap elements

• Maintain a count of zeroes encountered

Joins in DBMS are used to combine rows from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the ma...read more

Linux is an open-source operating system based on Unix that is widely used in servers, desktops, and embedded systems.

• Linux is free and open-source, meaning anyone can modify and distribute it.

• It is based on Unix and follows a multi-user, multitasking model.

• Linux uses a command-line interface, but also has graphical user interfaces like GNOME and KDE.

• Common distributions include Ubuntu, CentOS, and Debian.

A linked list is a data structure that consists of nodes where each node contains a data field and a reference to the next node in the sequence.

• Consists of nodes connected by pointers or references

• Can be singly linked (each node points to the next node) or doubly linked (each node points to the next and previous nodes)

• Allows for dynamic memory allocation and efficient insertion/deletion operations

• Example: Singly linked list: 1 -> 2 -> 3 -> 4 -> null