Professional Service Engineer Interview Questions and Answers

Null represents absence of value, while empty typically refers to a variable with a value of zero length.

• Null is a special value that indicates the absence of a value, while empty typically refers to a variable that has been initialized but contains no data.

• Null is often used in programming languages to indicate that a variable does not point to any object or data, while empty is used to describe a variable that has been initialized but has no content.

• For example, a null poin...read more

WAFL is a file system used in NetApp storage systems, which uses a copy-on-write methodology.

• WAFL stands for Write Anywhere File Layout.

• It uses a copy-on-write methodology to ensure data consistency and reduce write amplification.

• WAFL also includes features such as snapshots, clones, and deduplication.

• It is designed to optimize performance and storage efficiency in NetApp storage systems.

Use date formatting functions to convert date into different formats

• Use built-in date formatting functions in programming languages like JavaScript, Python, or Java

• Specify the desired format using format codes like 'YYYY-MM-DD' or 'MM/DD/YYYY'

• Example: In JavaScript, use new Date().toLocaleDateString('en-US', {year: 'numeric', month: '2-digit', day: '2-digit'})

DR testing procedures ensure business continuity in case of disaster.

• DR testing should be conducted regularly to ensure effectiveness.

• Testing should cover all critical systems and applications.

• Testing should include both technical and non-technical aspects.

• DR testing should be documented and reviewed regularly.

• DR testing should involve all relevant stakeholders.

• Examples of DR testing procedures include tabletop exercises, simulation tests, and full-scale tests.