Senior Technical Support Engineer Interview Questions and Answers for Freshers

Joins are used to combine data from two or more tables based on a related column between them.

• Inner join returns only the matching rows from both tables

• Left join returns all rows from the left table and matching rows from the right table

• Right join returns all rows from the right table and matching rows from the left table

• Full outer join returns all rows from both tables

• Cross join returns the Cartesian product of both tables

Troubleshooting BSOD involves identifying error codes, analyzing dump files, and checking hardware/software issues.

• Check the BSOD error code displayed on the screen for clues about the issue.

• Use Windows Event Viewer to look for critical errors that occurred before the BSOD.

• Analyze memory dump files using tools like WinDbg to pinpoint the cause.

• Run hardware diagnostics to check for failing components, such as RAM or hard drives.

• Update drivers and Windows to ensure compatibilit...read more

Troubleshooting Wi-Fi issues involves systematic checks of hardware, settings, and interference sources.

• Check if the Wi-Fi is enabled on the device. For example, ensure the Wi-Fi switch is on for laptops.

• Restart the router and modem. This can resolve many connectivity issues.

• Verify the network settings on the device. Ensure the correct SSID and password are being used.

• Check for interference from other devices. For instance, microwaves and cordless phones can disrupt Wi-Fi sig...read more

Active Directory is a directory service developed by Microsoft for Windows domain networks, managing users and resources.

• Centralized management of users, computers, and other resources in a network.

• Uses a hierarchical structure with domains, trees, and forests.

• Supports authentication and authorization through protocols like Kerberos.

• Enables Group Policy for centralized management of user and computer settings.

• Example: A company can manage employee access to files and applicat...read more