Technical Question Bank · Peer-Reviewed
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (329 available).
A subscription is a billing and access boundary; a resource group is a logical container for related resources. - Subscription: defines quotas, billing, and a trust bound...
Authentication (authn) establishes who the caller is: verifying a password, a session cookie, a token or a certificate. Authorization (authz) decides what that identified...
Dependency injection supplies instances to classes instead of letting them construct collaborators. Providers are registered at the root (providedIn: 'root'), on a route,...
Vue 3 wraps reactive objects in an ES Proxy that intercepts get and set operations. On a get, track() records the currently active effect (a render function, computed or ...
An optional represents a value that may be absent: either `.some(value)` or `.none`, written `nil`. Non-optional types can never be nil, and the compiler forces you to un...
Kotlin's type system distinguishes nullable from non-nullable types. `String` cannot hold null; `String?` can. This moves null checks to compile time and largely eliminat...
Use STAR and show respect plus results. Situation: "A teammate wanted to ship a caching layer right before a major release." Task: "I was responsible for release stabilit...
Use a tight 60-90 second structure: Present, Past, Future. - Present: your current role and the core value you deliver ("I am a full-stack engineer with four years buildi...
A VM virtualises hardware: each VM runs a full guest OS on a hypervisor, so it is heavy (GBs) and slow to boot (minutes) but strongly isolated. A container virtualises th...
Both describe the shape of an object, with subtle differences: - interface supports declaration merging and is usually preferred for public object shapes and class contra...
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