L&T Technology Services C Developer Interview Questions, Process, and Tips

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Q1. What is android?
Ans. 
Android is a mobile operating system developed by Google, based on the Linux kernel.
• Developed by Google

• Based on Linux kernel

• Used in smartphones, tablets, smartwatches, etc.
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Q2. What is kotlin?
Ans. 
Kotlin is a statically typed programming language that runs on the Java Virtual Machine (JVM) and can also be compiled to JavaScript source code.
• Kotlin is interoperable with Java, meaning you can use Java libraries and frameworks in Kotlin code.

• Kotlin is concise, reducing boilerplate code compared to Java.

• Kotlin supports functional programming features like higher-order functions and lambdas.

• Kotlin is officially suppor
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Q1. Whats is current ctc?
Ans. 
Current CTC refers to the current salary package of the candidate.
• Current CTC is the total amount of money a candidate is currently earning from their job.

• It includes the basic salary, bonuses, incentives, and any other monetary benefits.

• Candidates may choose to disclose their current CTC during job interviews to negotiate a better salary package.

• Example: If a candidate's current CTC is $50,000 per year, they may expec
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Q2. What is expected ctc?
Ans. 
Expected CTC is the salary range that the candidate is looking for in a new job.
• Research the average salary for Software Developers in your area

• Consider your experience, skills, and the company's size and industry

• Be prepared to negotiate based on the job responsibilities and benefits offered
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Q1. Difference between delete, drop and truncate
Ans. 
Delete removes rows from a table, drop removes the entire table, and truncate removes all rows from a table.
• Delete is a DML operation and can be rolled back, but it is slower than truncate.

• Drop is a DDL operation and cannot be rolled back. It removes the table and all associated objects.

• Truncate is a DDL operation and cannot be rolled back. It removes all rows from the table but keeps the table structure.

• Delete and tru...read more
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Q2. Difference between table and view
Ans. 
Table stores data in a structured format while view is a virtual table created from a query.
• Table is a physical object while view is a logical object.

• Table can be modified while view cannot be modified directly.

• Table can have indexes while view cannot have indexes.

• Table can have constraints while view cannot have constraints.

• View can be used to simplify complex queries by joining multiple tables.

• View can be used to res...read more
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Q3. What type of cursors did you use
Ans. 
I have used both implicit and explicit cursors in PL/SQL development.
• Implicit cursors are used for single-row queries while explicit cursors are used for multi-row queries.

• I have used explicit cursors with parameters to make the query more dynamic.

• I have also used cursor variables to pass cursors as parameters to procedures and functions.

• Examples of cursor types I have used include FOR LOOP, FETCH, and UPDATE cursors.
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Q4. What is primary key and unique key
Ans. 
Primary key uniquely identifies a record in a table, while unique key ensures uniqueness of a column or set of columns.
• Primary key is a column or set of columns that uniquely identifies each record in a table

• Unique key ensures that a column or set of columns have unique values

• Primary key cannot have null values, while unique key can have null values

• A table can have only one primary key, but multiple unique keys
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