AT&T Interview Questions, Process, and Tips

Q1. Sql question related to windows function
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Q2. Unix basics - find a word in a set of files
Ans. 
Using Unix command 'grep' to find a word in a set of files
• Use 'grep' command followed by the word you want to search for and the file(s) you want to search in

• Add the '-r' flag to search recursively in all files in a directory

• Use '-i' flag for case-insensitive search

• Example: grep 'hello' file.txt

• Example: grep -r 'error' /path/to/directory

• Example: grep -i 'apple' file1.txt file2.txt
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Q3. Python question related to file system, regex
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Q1. Difference between streams and parallel streams
Ans. 
Streams process elements sequentially, while parallel streams process elements concurrently.
• Streams process elements one by one in a sequential manner.

• Parallel streams process elements concurrently, potentially utilizing multiple threads for faster processing.

• Streams are suitable for smaller datasets or when order matters.

• Parallel streams are more efficient for larger datasets or when order is not important.

• Example: St...read more
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Q2. What is Static keyword in Java do?
Ans. 
Static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.
• Static variables are shared among all instances of a class.

• Static methods can be called without creating an object of the class.

• Static keyword can be used to initialize a variable only once.

• Example: public static int count = 0;
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Q1. Past Projects achievements
Ans. 
Led cross-functional teams to successfully deliver multiple projects on time and within budget.
• Managed project timelines, resources, and budgets effectively

• Implemented project management best practices to ensure successful outcomes

• Collaborated with stakeholders to define project scope and objectives

• Resolved project issues and risks in a timely manner

• Delivered regular project updates to senior leadership
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Q2. Ai today and tomorrow
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Dsa dp, graphs and many more questions from arrays and linked list were asked