Plintron Global Technology Solutions Interview Questions and Answers

Written aptitude test

Q1. What are Logic gates and what are universal gate
Ans. 
Logic gates are basic building blocks of digital circuits that perform logical operations. Universal gates can be used to implement any other gate.
• Logic gates are electronic devices that perform logical operations on one or more binary inputs to produce a single binary output.

• There are different types of logic gates such as AND, OR, NOT, NAND, NOR, XOR, and XNOR.

• Universal gates, like NAND and NOR gates, can be used to ...read more
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Q2. SQL query for creating a table
Ans. 
Creating a table using SQL query
• Use CREATE TABLE statement

• Specify table name and column names along with data types

• Add any constraints like primary key or foreign key if needed
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Q3. Why radio cells are hexagonal in shape
Ans. 
Radio cells are hexagonal in shape because it allows for efficient coverage with minimal overlap and interference.
• Hexagonal shape provides equal distance between each cell edge, ensuring uniform coverage.

• Minimizes interference by reducing overlapping areas between cells.

• Easier to plan and optimize network layout compared to other shapes like squares or circles.
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Q4. Various Linux commands
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Q5. OSI model and it's uses
Ans. 
The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.
• The OSI model helps in understanding how data is transmitted over a network.

• Each layer in the OSI model performs specific functions and communicates with the adjacent layers.

• Examples of OSI model layers include physical layer, data link layer, network layer, transport layer, session layer...read more
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Q1. College name and project details
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Q2. Terms of employment
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Company give the question paper with 10 questions answer the question it was like basic coding and general knowledge

Q1. What is split and where we used?
Ans. 
Split is a method used to divide a string into an array of substrings based on a specified delimiter.
• Split is commonly used in programming languages like Java, Python, and JavaScript.

• It is used to separate a string into multiple parts based on a specific character or sequence of characters.

• For example, in Java, you can use the split() method to split a sentence into words based on spaces.
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Q2. Cookies timeout?
Ans. 
Cookies timeout refers to the duration a cookie remains valid before it expires and is deleted by the browser.
• Cookies have an expiration date set by the 'Expires' or 'Max-Age' attribute.

• If no expiration is set, cookies are considered session cookies and expire when the browser is closed.

• Example: A cookie with 'Max-Age=3600' will expire in one hour.

• Cookies can be used for session management, user preferences, and tracki...read more
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Q3. Application and session statement difference?
Ans. 
Application and session statements are used in programming to manage user data and interactions, but have different scopes and lifetimes.
• Application statements are used to store data that is shared across all users and sessions.

• Session statements are used to store data that is specific to a particular user's session.

• Application statements are typically stored in a database or global variables, while session statements ...read more
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Q1. What linx booting process
Ans. 
The Linux booting process involves several stages including BIOS, bootloader, kernel initialization, and user space initialization.
• BIOS (Basic Input/Output System) performs Power-On Self Test (POST) and locates the bootloader

• Bootloader (such as GRUB) loads the Linux kernel into memory

• Kernel initializes hardware, mounts the root filesystem, and starts the init process

• User space initialization involves starting system se...read more
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Q1. Asked aws Cloud also
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Q1. Basics of DHCP,DNS etc
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Q1. Your selected that is it
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25 questions. Just a formality to that tests a worthy candidate.

2 questions. It's a must. Most will be filtered out beforehand. Just know that the 'waiting time' between round 1 and 2 will be long... Like really really long.

Q1. What are variables, classes...etc
Ans. 
Variables are containers for storing data values. Classes are blueprints for creating objects in object-oriented programming.
• Variables are declared with a data type and can hold different values.

• Classes define the properties and methods of objects.

• Inheritance allows classes to inherit properties and methods from other classes.

• Polymorphism allows objects to take on different forms depending on the context.

• Encapsulation ...read more
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Q2. Scope resolutions, friend functions etc
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Q1. 3 liter jug and 5 liter jug puzzle
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Q1. Personal questions based on resume
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Q1. What is your family background?
Ans. 
My family background is diverse and multicultural, with members from different countries and professions.
• My father is from India and works as a software engineer.

• My mother is from Brazil and is a doctor.

• I have an older sister who is studying law in the United States.

• My grandparents on my father's side are farmers in rural China.

• We celebrate both Indian and Brazilian cultural traditions in our household.
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Q2. Share details of your previous job.
Ans. 
I worked as a customer service representative at a telecommunications company.
• Handled customer inquiries and complaints via phone and email

• Provided technical support and troubleshooting assistance

• Processed billing and payment transactions

• Maintained accurate customer records

• Collaborated with other departments to resolve customer issues
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Q3. Tell me about yourself.
Ans. 
I am a motivated and enthusiastic individual with a strong desire to learn and grow in the trainee role.
• I have recently completed my Bachelor's degree in Business Administration.

• During my studies, I gained practical experience through internships at two different companies.

• I have developed excellent communication and problem-solving skills through my coursework and extracurricular activities.

• I am a quick learner and ad...read more
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Aptitude+Logical Reasoning+Puzzles

Required to write 2 programs in the language one is comfortable with.

Q1. What is a constructor?
Ans. 
A constructor is a special method that is used to initialize objects of a class.
• Constructors have the same name as the class they belong to.

• They are called automatically when an object is created.

• They can take parameters to set initial values for object properties.

• If a class does not have a constructor, a default constructor is created automatically.
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Q2. What is a variable/ static variable?
Ans. 
A variable is a named storage location in memory that holds a value. A static variable is a variable that retains its value between function calls.
• Variables are used to store data in a program

• They can be of different data types such as int, float, char, etc.

• Static variables are declared with the static keyword and retain their value between function calls

• They are useful for maintaining state across function calls
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Q3. Can you declare constructor privately? If so, what are the ways to access it from outside its class?
Ans. 
Yes, a constructor can be declared privately.
• Private constructors are used to prevent the creation of objects of a class from outside the class itself.

• To access a private constructor from outside its class, we can use a public static method or a factory method.

• The public static method or factory method can create an instance of the class by calling the private constructor.
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Q4. What is a class? And how can a class access another class?
Ans. 
A class is a blueprint for creating objects that have properties and methods. One class can access another class using inheritance or composition.
• A class is a user-defined data type that encapsulates data and functions.

• Classes can have access modifiers like public, private, and protected.

• Inheritance allows a class to inherit properties and methods from another class.

• Composition allows a class to use objects of another ...read more
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Q1. Why did you choose to study what you studied?
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Q2. Write Fibonacci program
Ans. 
Fibonacci program generates a series of numbers where each number is the sum of the two preceding ones.
• Declare variables for first and second numbers in the series

• Use a loop to generate subsequent numbers by adding the previous two

• Print or store the numbers in an array
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Q3. Write reverse string manipulation without using the predefined methods.
Ans. 
Reverse a string without using predefined methods.
• Create an empty string to store the reversed string.

• Loop through the original string from the end to the beginning.

• Add each character to the empty string.

• Return the reversed string.
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Q4. 3l Jar and 5l Jar puzzle.
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Q1. 5g call flow, data flow
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Q2. OCS, sigtron, bss
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