Q41. Explain how gradient descent optimizes a model.
Gradient descent minimizes a loss function by repeatedly moving parameters in the direction that decreases the loss. The gradient is the vector of partial derivatives, an...
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Q42. 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...
Q43. 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...
Q44. How do cache eviction policies differ?
Eviction decides what to remove when the cache is full or memory is constrained: - LRU (least recently used): evicts the item not accessed for the longest time. A solid d...
Q45. How do you test and audit accessibility properly?
Automated tools catch roughly a third of issues, so a complete audit combines them with manual and assistive-technology testing. Static checks include axe DevTools, Light...
Q46. 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...
Q47. What are lazy properties and property observers?
A stored property can run code when it is set or read through observers and modifiers. - `willSet` and `didSet` observe changes to a stored property. `willSet` receives t...
Q48. How do you implement a custom iterator in Rust?
You implement the `Iterator` trait by providing `next`, which returns `Option`. ```rust struct Counter { count: u32, max: u32 } impl Iterator for Counter { type Item = u3...
Q49. How would you scale Scrum across multiple teams?
Scaling Scrum is a problem of coordination, not of adding more Scrum. The first question is whether scaling is needed, because more layers often slow delivery. I keep tea...
Q50. How do you assess whether a company is financially healthy?
I look at profitability, liquidity, leverage and cash generation together, because any single ratio can mislead. Profitability: gross and net margin, and the trend over s...