20+ Technical Specialist Interview Questions and Answers for Freshers

Siemens 300 PLC is added in Simatic Net card for communication and networking purposes.

• Simatic Net card provides a communication interface for Siemens PLCs

• Siemens 300 PLC is compatible with Simatic Net card for networking

• Simatic Net card allows remote access and monitoring of Siemens 300 PLC

• Siemens 300 PLC can be integrated with other devices using Simatic Net card

Add 1 to each number in an ascending series

• Check if the numbers are in ascending order

• If yes, start with 1 and add it to the first number

• Continue adding subsequent numbers with increasing values of 1

Method overloading is having multiple methods in the same class with the same name but different parameters, while method overriding is redefining a method in a subclass with the same name and parameters as in the superclass.

• Method overloading is resolved at compile time based on the method signature, while method overriding is resolved at runtime based on the object type.

• In method overloading, the return type may or may not be different, but the parameters must be different....read more

I have worked on the Agile software development process.

• Utilized Scrum framework for project management

• Implemented iterative development and continuous feedback loops

• Collaborated closely with cross-functional teams

Develop an algorithm to analyze and solve previous coding questions effectively.

• Identify common patterns in previous coding questions, e.g., sorting algorithms.

• Break down problems into smaller, manageable parts, like using divide and conquer.

• Practice coding problems on platforms like LeetCode or HackerRank.

• Review solutions and understand different approaches to the same problem.

Abstract classes in Java are classes that cannot be instantiated and may contain abstract methods.

• Cannot be instantiated directly

• May contain abstract methods that must be implemented by subclasses

• Can have both abstract and non-abstract methods

• Used for creating a template for other classes to extend

ASI communication involves the exchange of data between a computer system and an ASI device.

• ASI stands for Asynchronous Serial Interface.

• It is a communication protocol used to transfer data between devices.

• ASI communication is commonly used in the broadcast industry to transport video and audio signals.

• It is a reliable and cost-effective method of transmitting data over short distances.

• ASI devices include encoders, decoders, modulators, and demodulators.

The range of M12 sensors varies depending on the specific sensor and its application.

• The range can be affected by factors such as the type of sensor, the environment it is used in, and the material it is detecting.

• For example, an M12 ultrasonic sensor may have a range of up to 2 meters, while an M12 inductive sensor may have a range of only a few millimeters.

• It is important to consult the specifications of the specific sensor being used to determine its range.

Check power source, battery, connections, and hardware issues to troubleshoot laptop not turning on.

• Check if the power source is working and plugged in properly

• Ensure the battery is charged or try using a different power source

• Inspect connections such as power cable, charger, and power button

• Look for hardware issues like faulty motherboard or power supply

• Try performing a hard reset by removing the battery and holding the power button for 30 seconds

I have used services like Virtual Machines, Azure Functions, Azure Storage, and Azure SQL Database in Azure.

• Virtual Machines

• Azure Functions

• Azure Storage

• Azure SQL Database

Interfaces in Java are like blueprints for classes, defining methods that must be implemented by classes that implement the interface.

• Interfaces in Java are used to achieve abstraction and multiple inheritance.

• Interfaces can have abstract methods, default methods, and static methods.

• Classes can implement multiple interfaces but can only extend one class.

• Example: interface Shape { void draw(); }

• Example: class Circle implements Shape { public void draw() { // draw circle } }

Data structures are ways of organizing and storing data in a computer so that it can be accessed and used efficiently.

• Data structures are used to manage and manipulate data in computer programs.

• They can be implemented using arrays, linked lists, trees, graphs, and other techniques.

• Examples of data structures include stacks, queues, hash tables, and binary search trees.

• Choosing the right data structure for a particular problem can greatly improve the efficiency of a program.

Tulip is a library for asynchronous programming in Python.

• Tulip provides a set of high-level APIs for writing concurrent code using coroutines and futures.

• It is included in Python 3.4 and later versions as the asyncio module.

• Tulip allows for efficient and scalable I/O operations, making it useful for network programming.

• Example: Using the asyncio module to create a simple HTTP server that handles multiple requests concurrently.

To create a new table from an existing table, you can use the CREATE TABLE AS SELECT statement in SQL.

• Use the CREATE TABLE AS SELECT statement in SQL to create a new table based on the structure and data of an existing table.

• Specify the columns you want to include in the new table and the source table from which to select the data.

• You can also add conditions or filters to the SELECT statement to customize the data being copied to the new table.

An activation function determines the output of a neural network node, introducing non-linearity to the model.

• Purpose: Activation functions help neural networks learn complex patterns by introducing non-linearities.

• Types: Common activation functions include Sigmoid, ReLU (Rectified Linear Unit), and Tanh.

• Sigmoid: Outputs values between 0 and 1, useful for binary classification problems.

• ReLU: Outputs the input directly if positive; otherwise, it outputs zero, helping with grad...read more

There are four types of OOPs: Encapsulation, Inheritance, Polymorphism, and Abstraction.

• Encapsulation: Hiding the implementation details of an object from the outside world.

• Inheritance: Creating a new class from an existing class, inheriting all the properties and methods of the parent class.

• Polymorphism: The ability of an object to take on many forms. It allows objects of different classes to be treated as if they were objects of the same class.

• Abstraction: The process of hi...read more

Encoder converts data into a coded format while decoder decodes it back to its original form.

• Encoder is used to convert data into a coded format while decoder is used to decode it back to its original form.

• Encoder is used in communication systems to transmit data while decoder is used to receive and interpret the transmitted data.

• Examples of encoders include binary encoders, priority encoders, and quadrature encoders while examples of decoders include binary decoders and prio...read more

Optimizers are algorithms or tools that enhance performance by improving resource allocation and execution efficiency in various systems.

• Query Optimization: In databases, optimizers determine the most efficient way to execute a query, such as using indexes to speed up data retrieval.

• Compiler Optimization: Compilers optimize code during the compilation process to improve execution speed and reduce resource usage, like loop unrolling.

• Machine Learning Optimization: Algorithms li...read more

C++ is an extension of C with object-oriented programming features.

• C++ supports classes and objects while C does not.

• C++ has better support for function overloading and templates.

• C++ has a standard library that includes many useful functions.

• C++ allows for both procedural and object-oriented programming.

• C++ is generally considered to be more complex than C.

Use SQL query to find duplicate records in a database table

• Use GROUP BY clause with COUNT() function to identify duplicate records

• Join the table with itself on the columns that need to be checked for duplicates

• Filter the results to show only records with count greater than 1

TF-IDF is a statistical measure used to evaluate the importance of a word in a document relative to a collection of documents.

• Term Frequency (TF): Measures how frequently a term appears in a document. For example, if 'data' appears 5 times in a document of 100 words, TF = 5/100 = 0.05.

• Inverse Document Frequency (IDF): Measures how important a term is across a collection of documents. If 'data' appears in 10 out of 1000 documents, IDF = log(1000/10) = 2.

• TF-IDF Calculation: The...read more