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Keyloop Interview Questions and Answers

Updated 7 Oct 2024

Q1. SQL queries and differences b/w delete and truncate

Ans.

Delete and truncate are SQL commands used to remove data from a table, but with key differences.

  • DELETE is a DML command used to remove specific rows from a table based on a condition.

  • TRUNCATE is a DDL command used to remove all rows from a table, resetting auto-increment values.

  • DELETE can be rolled back, while TRUNCATE cannot be rolled back.

  • DELETE triggers ON DELETE triggers, while TRUNCATE does not trigger any triggers.

  • DELETE is slower as it logs individual row deletions, wh...read more

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Q2. what are Linux commands

Ans.

Linux commands are instructions given to the operating system to perform specific tasks or operations.

  • Linux commands are case-sensitive

  • Commands are typically entered in the terminal

  • Common commands include ls (list files), cd (change directory), mkdir (make directory)

  • Commands can be combined with options and arguments for more specific actions

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Q3. What is virtualization concept

Ans.

Virtualization is the process of creating a virtual version of a device or resource, such as a server, storage device, network or operating system.

  • Virtualization allows multiple virtual instances to run on a single physical machine

  • It helps in optimizing resources and improving efficiency

  • Examples include VMware for server virtualization, VirtualBox for desktop virtualization

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Q4. What is cloud and aws

Ans.

Cloud computing is the delivery of computing services like servers, storage, databases, networking, software, analytics, and intelligence over the internet.

  • AWS (Amazon Web Services) is a popular cloud computing platform offered by Amazon.

  • Cloud computing allows users to access resources on-demand without the need for physical infrastructure.

  • AWS provides a wide range of services such as EC2 (Elastic Compute Cloud), S3 (Simple Storage Service), and RDS (Relational Database Servi...read more

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Q5. Tell me about lecturere

Ans.

A lecturer is a person who delivers lectures or presentations on a particular subject or topic.

  • Lecturers typically have expertise in a specific field or subject area.

  • They often teach at universities, colleges, or other educational institutions.

  • Lecturers may also conduct research and publish academic papers.

  • They play a crucial role in educating and inspiring students.

  • Some lecturers may also provide training or workshops in their area of expertise.

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Q6. Tell me about clg

Ans.

CLG is an acronym for College.

  • CLG stands for College.

  • It is a common abbreviation used in educational settings.

  • Example: I am currently attending CLG for my undergraduate degree.

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