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I applied via Campus Placement and was interviewed in Apr 2023. There were 5 interview rounds.
Simply one can get through this if have a good grip solving rs Agrawal reasoning questions.
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posted on 30 Nov 2022
I applied via LinkedIn and was interviewed before Nov 2021. There were 3 interview rounds.
There are basic aptitude questions for freshers level
I appeared for an interview before Jun 2016.
I applied via Campus Placement and was interviewed before Apr 2020. There were 5 interview rounds.
I applied via Naukri.com and was interviewed in Oct 2020. There was 1 interview round.
I applied via Job Portal and was interviewed in Apr 2021. There were 2 interview rounds.
I applied via Naukri.com and was interviewed in Sep 2020. There were 3 interview rounds.
The HashMap class is used to represent key-value pairs in Java.
HashMap is a part of the Java Collections Framework.
It allows null values and only one null key.
It provides constant-time performance for basic operations like get and put.
Example: HashMap<String, Integer> map = new HashMap<>();
Abstraction is the process of simplifying complex systems by focusing on essential details and hiding unnecessary complexities.
Abstraction allows us to create models or representations of real-world objects or systems in software.
It helps in managing complexity by breaking down a system into smaller, more manageable parts.
Abstraction provides a level of indirection, allowing changes to be made in one part of the system...
try-catch is used in Java to handle exceptions and prevent program crashes.
try-catch blocks are used to catch and handle exceptions that may occur during program execution.
It allows the program to gracefully handle errors and prevent the program from crashing.
The try block contains the code that may throw an exception, and the catch block handles the exception.
Multiple catch blocks can be used to handle different types...
The statement to use for selecting based on integer inputs is the 'switch' statement.
The 'switch' statement allows for multiple cases to be evaluated based on the value of an integer input.
Each case represents a possible value of the input, and the corresponding code block is executed if the value matches.
The 'switch' statement also provides a 'default' case which is executed if none of the cases match the input value.
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I applied via Campus Placement and was interviewed in Dec 2022. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Sep 2021. There were 4 interview rounds.
IoT uses various protocols such as MQTT, CoAP, HTTP, and AMQP for communication and data transfer.
MQTT (Message Queuing Telemetry Transport) is a lightweight protocol used for IoT devices with low bandwidth and power constraints.
CoAP (Constrained Application Protocol) is designed for resource-constrained devices and networks.
HTTP (Hypertext Transfer Protocol) is used for web-based communication and data transfer.
AMQP (...
MQTT is a lightweight messaging protocol for IoT devices.
MQTT stands for Message Queuing Telemetry Transport
It uses a publish-subscribe model for communication
It is designed for low-bandwidth, high-latency networks
It is widely used in IoT applications
It supports Quality of Service (QoS) levels for message delivery
Modbus RTU is binary and Modbus ASCII is text-based. RTU is more efficient and commonly used.
RTU uses binary encoding while ASCII uses text-based encoding
RTU is more efficient and commonly used in industrial automation
ASCII is easier to troubleshoot and can be used for long-distance communication
RTU has a smaller message size and faster transmission speed
ASCII has a larger message size and slower transmission speed
Some of the top questions asked at the Volansys Technologies Associate Engineer interview -
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Principal Engineer
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