ACL Digital Interview Questions and Answers

BGP and OSPF are routing protocols used in networking. BGP has states like Idle, Connect, OpenSent, etc. OSPF has states like Down, Init, 2-Way, etc.

• BGP states: Idle, Connect, OpenSent, OpenConfirm, Established

• OSPF states: Down, Init, 2-Way, ExStart, Exchange, Loading, Full

• To configure label path in BGP, you can use the 'mpls label protocol ldp' command in Cisco IOS

• To configure BGP peering, you need to define neighbor ...read more

Closures in JavaScript are functions that retain access to their lexical scope, even when executed outside that scope.

• A closure is created when a function is defined inside another function.

• Closures can access variables from their parent function's scope.

• They help in data encapsulation and maintaining state.

• Example: function outer() { let count = 0; return function inner() { count++; return count; }; }

• Closures are ofte...read more

Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their containing scope during compilation.

• Variables declared with 'var' are hoisted, but their initialization is not. Example: console.log(a); var a = 5; // undefined

• Function declarations are fully hoisted. Example: greet(); function greet() { console.log('Hello'); } // Outputs: Hello

• Variables declared with 'let' and 'c...read more

Infinite currying is a functional programming technique that allows functions to be called with a variable number of arguments over time.

• Currying transforms a function with multiple arguments into a series of functions that each take a single argument.

• Example: A function `add(a, b)` can be curried to `add(a)(b)`.

• Infinite currying allows you to keep calling the function with new arguments until you decide to compute the...read more

A polyfill for the bind method allows functions to be bound to a specific context, ensuring 'this' refers to the desired object.

• The bind method creates a new function that, when called, has its 'this' keyword set to the provided value.

• It can also take additional arguments that are prepended to the arguments provided to the bound function.

• Example: Function.prototype.myBind = function(context, ...args) { return (...newAr...read more

Code to reverse a given string

• Create an empty string to store the reversed string

• Iterate through the input string from the end to the beginning

• Append each character to the empty string

• Return the reversed string