Centre for Development of Advanced Computing Associate Engineer Interview Questions and Answers

Q1. DHCP, DNS, Ticketing tool
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Q1. What is the query for insertion
Ans. 
The query for insertion in a database table.
• Use the INSERT INTO statement followed by the table name

• Specify the columns you want to insert data into

• Provide the values to be inserted for each column

• Example: INSERT INTO employees (name, age) VALUES ('John Doe', 30)
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Q2. Give me a program for palindrome
Ans. 
A program to check if a given string is a palindrome or not
• Create a function that takes a string as input

• Remove all non-alphanumeric characters and convert the string to lowercase

• Compare the original string with its reverse to check if it's a palindrome

• Return true if it's a palindrome, false otherwise
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Arrays sort using largest element

Q1. Tell about yourself
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Q1. Basics of spark and hive and kafka
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Q1. Spark scala codinng on screen share along with working explanations of spark and hive
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Q1. What is a stack and implement it
Ans. 
A stack is a linear data structure that follows the Last In First Out (LIFO) principle.
• Elements are added to the top of the stack and removed from the top as well.

• Common operations include push (add element to top) and pop (remove element from top).

• Stacks can be implemented using arrays or linked lists.

• Example: undo/redo functionality in a text editor.

• Example: function call stack in programming languages.
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Q2. What is hashing and does it have key?
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Hashing is a process of converting data into a fixed-size output. It has a key that is used to access the data.
• Hashing is used to store and retrieve data quickly.

• It uses a hash function to generate a unique key for each input data.

• The key is used to access the data in constant time.

• Hashing is used in password storage, data indexing, and cryptography.

• Examples of hash functions include MD5, SHA-1, and SHA-256.
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All the aptitude topics were asked

Q1. Asked about java questions and about my projects in resume
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It had logical, reasoning and coding questions

Q1. What is an OS and it's importance?
Ans. 
An OS is a software that manages computer hardware and software resources and provides common services for computer programs.
• OS stands for Operating System.

• It manages computer hardware and software resources.

• It provides common services for computer programs.

• It acts as an interface between the user and the computer hardware.

• Examples of OS are Windows, macOS, Linux, Android, iOS, etc.
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