Technical Question Bank · Peer-Reviewed

Job Interview Questions and Answers Directory

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Web Performance Easy technical

Q1. How do lazy loading and code splitting improve performance?

Lazy loading defers work until it is needed. For images, loading="lazy" and decoding="async" defer off-screen loads, but never lazy-load the LCP image because it delays t...

2 Answer

Swift Medium technical

Q2. 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...

1 Answer

Angular Medium technical

Q3. How do Angular route guards and lazy loading work together?

The router supports guards that run during navigation: CanActivate, CanActivateChild, CanDeactivate for unsaved forms, CanMatch for feature flags, and Resolve to prefetch...

1 Answer