10+ Trainee Developer Interview Questions and Answers

The proper sequence of the given sentence is RQPS.

• The sentence starts with the event of hearing the hue and cry at midnight (R)

• The person did not know what to do (Q)

• He was nervous (P)

• The sentence ends with the person figuring out what to do (S)

RDBMS is a type of DBMS that stores data in a structured manner using tables with relationships.

• DBMS is a general term for any software that manages data, while RDBMS is a specific type of DBMS.

• RDBMS stores data in tables with predefined relationships between them.

• RDBMS enforces ACID properties (Atomicity, Consistency, Isolation, Durability) to ensure data integrity.

• Examples of RDBMS include MySQL, Oracle, and SQL Server.

• Examples of non-RDBMS DBMS include MongoDB and Cassandr...read more

Probability of a point making an obtuse angle inside a trapezium with one side.

• The point must lie inside the trapezium.

• The trapezium must have one side that is not parallel to the other.

• Use trigonometry to calculate the angles of the trapezium.

• Calculate the probability of the point making an obtuse angle using the angles of the trapezium.

A web application for managing student information

• Allows administrators to add, edit, and delete student records

• Includes features for tracking attendance, grades, and disciplinary actions

• Provides a user-friendly interface for students and parents to access their information

• Generates reports and analytics for administrators to analyze student performance

Big Data refers to large and complex data sets that cannot be processed using traditional data processing methods.

• Big Data is characterized by the 3Vs: Volume, Velocity, and Variety.

• It requires specialized tools and technologies such as Hadoop, Spark, and NoSQL databases.

• Examples of Big Data include social media data, sensor data, and financial market data.

Span is an inline HTML element used to group and style inline elements.

• Inline element

• Used for grouping and styling inline elements

• Does not create a new line

IDs and classes are used in HTML to identify and style elements.

• IDs are unique identifiers for elements, while classes can be used multiple times.

• IDs are typically used for specific elements, while classes are used for groups of elements.

• IDs have higher specificity in CSS, meaning they override styles applied to classes.

• IDs are selected using the '#' symbol in CSS, while classes are selected using the '.' symbol.

OOP concepts are used in many real-life scenarios, such as creating a car or a bank account.

• Creating a car involves encapsulation, inheritance, and polymorphism.

• Bank accounts use encapsulation to protect sensitive data and inheritance to create different types of accounts.

• Video games use inheritance to create different types of characters and polymorphism to allow them to perform different actions.

• Social media platforms use encapsulation to protect user data and inheritance t...read more

Tokens are used in web development to authenticate users, authorize access to resources, and maintain session state.

• Tokens are often used for user authentication, where a user logs in and receives a token to access protected resources.

• Tokens can also be used for authorization, where different tokens grant different levels of access to resources.

• Tokens can help maintain session state by storing user information and permissions.

• Examples include JSON Web Tokens (JWT) for authent...read more

To detect a loop in a linked list, use Floyd's Cycle Detection Algorithm.

• Use two pointers, slow and fast, to traverse the linked list.

• If there is a loop, the fast pointer will eventually meet the slow pointer.

• Time complexity is O(n) and space complexity is O(1).