Wix Interview Questions (6+ Questions)

Diagnose and eliminate wasteful CPU consumption in idle containers caused by busy-wait loops, spinlocks, tight polling, and inefficient PID 1 process handling. Use docker stats and process inspection to identify CPU-consuming operations, replace polling with blocking I/O or event-driven patterns, and optimize application initialization. Essential for resource efficiency, reducing cloud costs, preventing CPU starvation in shared environments, and improving overall cluster utilization.

Kubernetes ConfigMap File Mount: Inject MODE=dev at /config/MODE Path. Configure applications with ConfigMap file mounting by creating app-config ConfigMap and mounting the MODE=dev key as a file at /config/MODE in config-pod using busybox:latest. This hands-on task demonstrates ConfigMap volume mounting, key-as-file configuration, externalized configuration, and environment-specific settings. Perfect for 12-factor app configuration, microservices config management, separation of config from code, and dynamic application configuration.

Configure Kubernetes admission webhooks to block privileged containers, dangerous capabilities, and hostPath volumes. Enforce pod security policies effectively.

To effectively prepare for a technical interview, understanding how to dynamically configure Kubernetes Deployments using Terraform is crucial. This interview question focuses on setting up a multi-purpose web application that needs to expose multiple ports – specifically for HTTP, HTTPS, and metric...

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SQL Interview Question: Retrieving and Combining Full Names of Employees

Objective

Your task is to write an SQL query that retrieves the full names of all employees by combining their first and last names. The output should be a single column named full_name, which is the concatenation of first_name and last_name separated by a space. Furthermore, the results should be ordered alphabetically by full_name.

Additional Information

• Table Name: employees
• Table Schema:
  • id (INT): The unique identifier for each employee.
  • first_name (VARCHAR): The employee's first name.
  • last_name (VARCHAR): The employee's last name.

Output

• A list of objects with a single column full_name.

Constraints

• full_name should correctly combine first_name and last_name with a space in between.
• The results must be sorted in ascending order based on full_name.

Solution

To achieve the desired output, use the following SQL query:

SELECT
  CONCAT(first_name, ' ', last_name) AS full_name
FROM
  employees
ORDER BY
  full_name ASC;

This query takes the first_name and last_name from the employees table, concatenates them with a space in between, and names this concatenated column as full_name. The final result is ordered alphabetically by full_name in ascending order.

Classifying Inventory Items Based on Stock Duration and Quantity

In a typical inventory management scenario, it's crucial to understand the status of items in stock, particularly how long they have been there and in what quantities. This knowledge helps make better decisions regarding restocking...

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