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 (63 available).
`let` declares a constant binding and `var` a mutable one. For value types, `let` also prevents changing stored properties. Structs are value types: assignment and passin...
`string` is immutable: every operation such as concatenation or `Replace` allocates a new string. `StringBuilder` is a mutable buffer backed by a resizable array, so appe...
`String` is an owned, growable, heap-allocated UTF-8 string (essentially a `Vec`) that you can mutate and extend. `&str` is a borrowed string slice: a pointer plus a leng...
A distributed store can guarantee only two of three during a network partition: Consistency (every read sees the latest write), Availability (every request gets a non-err...
Streams process data in chunks instead of buffering everything, which keeps memory flat for large files and real-time traffic. Four types: - Readable: source of data (fs....
Generics let you write code that works over many types while preserving the relationship between input and output types. ```ts function first(items: T[]): T | undefined {...
A module is a reusable package of Terraform configuration. Every configuration is a root module, and it can call child modules. Benefits: - Encapsulation: expose a small ...
In a dynamic environment, service instances start, stop and move, so callers cannot rely on fixed hostnames. Service discovery maintains a registry of healthy instances a...
A `data class` automatically generates `equals()`, `hashCode()`, `toString()`, `copy()` and `componentN()` functions for destructuring, based on the properties declared i...
A constructor runs when an object is created and initialises its members. A destructor runs when it is destroyed and releases resources. Constructors share the class name...
HireXTech uses essential storage to remember your study preferences and third-party advertising cookies via Google AdSense in compliance with GDPR. You can choose to enable essential cookies only or accept all cookies. Read our Privacy Policy.