L&T Technology Services Hadoop Administrator Interview Questions, Process, and Tips

Basic aptitudes question in online test

Two coding Q online test

Q1. Resume bsic Q asked
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Q2. Oops question basic theory
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Q1. One coding question asked to solve on paper of arrays
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Q2. Basic questions from resume
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Q1. Relocating related questions
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Q2. Why u want to join global logic
Ans. 
I want to join Global Logic because of their reputation for cutting-edge technology solutions and collaborative work environment.
• Global Logic is known for their innovative technology solutions

• I am impressed by the collaborative work environment at Global Logic

• I believe Global Logic offers great opportunities for professional growth and development
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Q1. How to create custom serializable interface
Ans. 
To create a custom serializable interface, you need to define an interface with the Serializable marker interface and implement the necessary methods.
• Define an interface with the Serializable marker interface

• Implement the necessary methods for serialization and deserialization

• Ensure all fields in the class implementing the interface are serializable
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Q2. Whatis criteria in hibernate
Ans. 
Criteria in Hibernate is used to create and execute dynamic queries.
• Criteria is an interface in Hibernate that allows the creation of dynamic queries without using HQL or SQL.

• Criteria queries are type-safe and can be easily modified at runtime.

• Criteria queries can be used to fetch entities based on certain conditions or restrictions.

• Example: Criteria criteria = session.createCriteria(Employee.class);
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Basic MCQs on General aptitude, logical reasoning and programming questions

Q1. What is a constructor in C++?
Ans. 
A constructor in C++ is a special member function that is automatically called when an object is created.
• Constructors have the same name as the class and do not have a return type.

• They can be used to initialize the object's data members.

• Default constructors are automatically generated if no constructor is defined.

• Parameterized constructors can be defined to accept arguments during object creation.
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Q2. What is copy assignment operator?
Ans. 
Copy assignment operator is a special member function in C++ that allows one object to be assigned the values of another object of the same class.
• Copy assignment operator is denoted by the = operator.

• It is used to copy the values of one object into another object of the same class.

• It is automatically generated by the compiler if not explicitly defined.

• Example: MyClass obj1; MyClass obj2; obj2 = obj1; // Copy assignment
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Q3. What is virtualization in C++?
Ans. 
Virtualization in C++ is the process of creating a virtual version of a class or function to allow for polymorphism and dynamic binding.
• Virtualization in C++ is achieved through the use of virtual functions and inheritance.

• Virtual functions are declared in a base class and overridden in derived classes to provide different implementations.

• Virtualization allows for polymorphism, where a pointer to a base class can point...read more
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Q4. Implement String class
Ans. 
Implement a custom String class in a programming language.
• Define a class with necessary properties and methods to manipulate strings.

• Include methods for concatenation, substring, length, etc.

• Handle memory allocation and deallocation properly.

• Example: class MyString { // implementation }
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Q5. What is smart pointers?
Ans. 
Smart pointers are objects that act like pointers but provide automatic memory management.
• Smart pointers help prevent memory leaks by automatically deallocating memory when no longer needed.

• Examples include unique_ptr, shared_ptr, and weak_ptr in C++.

• They provide better memory safety compared to raw pointers.
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30 questions combination of Logical, numeric, verbal and 2 coding questions.

Q1. Self Introduction
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Q2. Questions on core Java concepts
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Q1. Tell me about yourself
Ans. 
I am a passionate software engineer with experience in developing web applications and a strong background in computer science.
• Experienced in developing web applications using technologies such as HTML, CSS, JavaScript, and React

• Strong background in computer science with knowledge of data structures and algorithms

• Proficient in programming languages such as Java, Python, and C++

• Familiar with Agile development methodolog
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Q2. Your strength and weakness
Ans. 
Strength: Problem-solving skills. Weakness: Overthinking.
• Strength: I have strong problem-solving skills which help me in finding efficient solutions to complex issues.

• Weakness: Sometimes I tend to overthink situations, which can lead to unnecessary stress and delays in decision-making.
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Three coding question

Two technical questions based on strings and linked lists.

What is apex and trigger
asked on lwc
Integration using rest api
Best practices

Q1. Trigger on opportunity to calculate sum child to parent event communication child parent LWC wire method Integration rest api
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Q2. Wirte lwc component using combobox
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Q3. Write batch class
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Q4. Write callout apex class
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Q1. Intall Mongo Db and perform crud operation
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Q2. Dsa question asked to complete in javascrip
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