Q141. What is the difference between slice and splice?
Here are the key differences between `slice()` and `splice()` methods in JavaScript arrays: | `slice()` | `splice()` | | -------------------------------------------------...
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Q142. What is linear regression and what are its assumptions?
Linear regression models a continuous target as a linear combination of predictors plus error: y = b0 + b1*x1 + ... + e. Coefficients are estimated by ordinary least squa...
Q143. What is a Redis sorted set and what are common use cases?
A sorted set stores unique members, each with a floating-point score, kept ordered by score. Operations are O(log N), and you can query by rank or by score range. ```sh Z...
Q144. What is the difference between a pipeline stage and a job?
Stages and jobs structure a pipeline into ordered, parallelisable work. - Stage: a logical phase such as build, test, or deploy. Stages run in order, and a later stage st...
Q145. What is the difference between count and for_each?
Both create multiple instances of a resource, but they track them differently. - count takes a number and identifies instances by index, such as resource[0] and resource[...
Q146. What is a GCP service account key and why should you avoid it?
A service account key is a downloadable JSON file containing a private key that lets any holder authenticate as that service account. It is long-lived and does not expire...
Q147. What is the difference between Azure managed disks and a storage account?
Managed disks are block-level volumes for Azure VMs, managed by Azure. A storage account is a broader namespace that hosts blobs, files, queues, and tables, and previousl...
Q148. What are the different types of data binding in Angular?
Angular has several binding forms. Interpolation {{ value }} renders a component property into text. Property binding [property]="expr" sets a DOM property or directive i...
Q149. Which data type for distance rounded to the nearest mile?
When storing distance rounded to the nearest whole mile, an **integer data type** is the optimal choice: ```sql ALTER TABLE travel_logs ADD COLUMN distance_miles INT NOT ...
Q150. What is PEP 8?
**PEP 8** (Python Enhancement Proposal 8) is the official style guide for writing clean, readable, and maintainable Python code, authored in 2001 by Guido van Rossum, Bar...