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A network is a collection of interconnected devices and systems that allow for the sharing of resources and information.
A network is made up of nodes, which can be computers, servers, routers, switches, or other devices.
These nodes are connected by physical or wireless connections, such as Ethernet cables or Wi-Fi.
Networks can be local (LAN), connecting devices within a limited area like a home or office, or wide (WAN)...
Types of network include LAN, WAN, MAN, PAN, WLAN, and VPN.
LAN (Local Area Network) is a network that covers a small area like an office or a building.
WAN (Wide Area Network) connects multiple LANs over a large geographical area.
MAN (Metropolitan Area Network) covers a larger area than LAN but smaller than WAN, usually within a city.
PAN (Personal Area Network) connects devices within an individual's personal space, lik...
The OSI model is a conceptual framework that standardizes the functions of a communication system into seven layers.
The OSI model stands for Open Systems Interconnection model.
It was developed by the International Organization for Standardization (ISO) in 1984.
The model divides the communication process into seven layers, each with its own specific functions.
The layers are: Physical, Data Link, Network, Transport, Sess...
Topology refers to the arrangement of network devices and their connections.
Topology determines how devices are connected and communicate with each other.
Common topologies include star, bus, ring, and mesh.
In a star topology, all devices are connected to a central hub.
In a bus topology, devices are connected to a single cable.
In a ring topology, devices are connected in a circular manner.
In a mesh topology, devices are...
I appeared for an interview in Jan 2025.
Test was based on arrays and some dsa concepts.
I applied via LinkedIn and was interviewed in Apr 2023. There were 3 interview rounds.
Use Depth First Search (DFS) to find connected components in a graph
Start by initializing all vertices as unvisited
Iterate through each vertex and perform DFS to find connected components
Keep track of visited vertices to avoid revisiting
Example: For a graph with vertices {A, B, C} and edges {(A, B), (B, C)}, the connected components are {A, B, C}
Design a chess game with proper board setup, piece movements, and win conditions.
Create a 8x8 grid to represent the chess board
Assign initial positions to each type of chess piece (pawn, rook, knight, bishop, queen, king)
Implement rules for each piece's movement (e.g. pawn moves forward, rook moves horizontally/vertically)
Check for valid moves and capture opponent's pieces
Implement win conditions (checkmate, stalemate)
...
posted on 9 Oct 2022
I applied via Job Portal and was interviewed in Apr 2022. There were 5 interview rounds.
It was simple program of url shorting for registered and non registered users each request must have unique shortened url.
A palindrome is a word or phrase that reads the same backward as forward. Implementing it involves comparing the first and last characters and iterating towards the middle.
Implement a function that takes a string as input and returns true if it is a palindrome, false otherwise.
Use two pointers, one starting from the beginning and the other from the end, and compare the characters at each position.
If the characters matc...
posted on 22 Jun 2024
I applied via Job Portal and was interviewed before Jun 2023. There were 4 interview rounds.
Scenarios base conding round
Questions on strings in javascript.
Basic javascript and typescript.
posted on 7 May 2023
I applied via Campus Placement and was interviewed before May 2022. There were 3 interview rounds.
posted on 14 Jan 2025
I applied via Campus Placement and was interviewed before Jan 2024. There were 3 interview rounds.
Easy coding questions DSA
Reverse a linked list by changing the pointers direction
Start with three pointers: current, previous, and next
Iterate through the linked list, updating the pointers to reverse the direction
Update the head pointer to point to the new first node
To find the middle of a linked list, use the slow and fast pointer technique.
Initialize two pointers, slow and fast, both pointing to the head of the linked list.
Move slow pointer by one step and fast pointer by two steps until fast reaches the end of the list.
The position of the slow pointer will be the middle of the linked list.
The question is asking to pick an orange from a basket.
Carefully select a ripe orange without any bruises or blemishes
Gently twist the orange off the stem to avoid damaging the fruit
Check for firmness and weight to determine ripeness
posted on 15 May 2024
I applied via LinkedIn and was interviewed in Apr 2024. There was 1 interview round.
HashMap is implemented using an array of linked lists to handle collisions.
HashMap stores key-value pairs in an array of linked lists
Hash function is used to determine the index of the array where the key-value pair will be stored
Collision handling is done by chaining, where multiple key-value pairs with the same hash value are stored in the same linked list
HashMap allows null keys and values
HashMap is not synchronized...
posted on 5 Jun 2024
I applied via Naukri.com and was interviewed in May 2024. There were 3 interview rounds.
2hrs aptitude test was there
2 hrs coding test was there
GD was conducted and then i passed it
posted on 29 Sep 2024
I applied via Job Portal and was interviewed before Sep 2023. There were 4 interview rounds.
Medium level leet code questions
Low level system design of Instagram involves designing the core components like database, storage, caching, and networking.
Use sharding to distribute data across multiple database servers for scalability.
Implement a caching layer using Redis or Memcached to improve performance.
Utilize a content delivery network (CDN) for faster content delivery to users.
Design a fault-tolerant storage system to ensure data durability ...
Designing a message queue system for efficient communication between components
Define the requirements and constraints of the system
Choose a suitable messaging protocol (e.g. AMQP, MQTT)
Design the message format and structure
Implement mechanisms for message persistence and delivery guarantees
Consider scalability and fault tolerance
Use appropriate data structures and algorithms for efficient message handling
My goal is to continuously improve my technical skills, contribute to impactful projects, and eventually move into a leadership role.
Continuously improve technical skills through learning new technologies and best practices
Contribute to impactful projects by delivering high-quality code and solutions
Work towards moving into a leadership role by taking on more responsibilities and mentoring junior team members
I chose Jupiter because of its strong gravitational pull and potential for scientific exploration.
Jupiter's large size and mass make it a key player in shaping the solar system
Its strong magnetic field and radiation belts provide valuable insights for space research
Jupiter's moons, like Europa and Io, offer unique environments for potential exploration missions
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