Ingenious BPO Interview Questions and Answers

Services are used to share data and functionality across components. Lifecycle hooks are methods that get called at specific stages of a component's life.

• Services are singleton objects that can be injected into components

• Lifecycle hooks include ngOnInit, ngOnDestroy, and ngOnChanges

• ngOnInit is called when a component is initialized

• ngOnDestroy is called when a component is about to be destroyed

• ngOnChanges is called when a component's input properties change

Angular components interact with each other through @Input, @Output, and services.

• Components can pass data to child components using @Input decorator

• Components can emit events to parent components using @Output decorator

• Components can share data through services

• Components can communicate with each other using @ViewChild and @ContentChild decorators

Memoization is a technique to cache the results of a function to improve performance.

• Memoization can be implemented using closures or objects.

• It is useful for functions that are computationally expensive or have repetitive calculations.

• Memoization can be used for recursive functions to avoid redundant calculations.

• Example: Memoizing a Fibonacci function to avoid recalculating the same values.

Currying is a technique in JavaScript where a function with multiple arguments is transformed into a sequence of functions with single arguments.

• Currying allows for partial application of functions.

• It can be achieved using the bind() method or by creating a closure.

• Curried functions can be used for function composition and creating reusable code.

• Example: const add = x => y => x + y; add(2)(3) returns 5.

Network structure in SMB organizations typically consists of a combination of wired and wireless networks, routers, switches, firewalls, and servers.

• SMB organizations often have a flat network structure with limited layers of hierarchy.

• They may use a combination of Ethernet and Wi-Fi for network connectivity.

• Routers are used to connect the internal network to the internet.

• Switches are used to connect devices within the network.

• Firewalls are implemented to secure the network f...read more