PRN221 FE EXAM QUESTIONS AND ANSWERS 100% PASS

PRN221 FE EXAM QUESTIONS AND ANSWERS 100% PASS d - Choose the correct statement about key components of the System.Net.* Namespaces a. HttpServer for consuming HTTP web APIs and RESTful services b. WebRequest and WebResponse classes for high-level control over client-side TCP or UDP operations c. All of the others *d. A WebClient facade class for simple download/upload operations via HTTP or FTP* b - To configure a custom number of reconnect attempts before disconnecting or change the reconnect timing, the withAutomaticReconnect accepts an array of numbers representing the delay in milliseconds to wait before starting each reconnect attempt. Choose the correct option for making automatically reconnect. a. const connection = new signalR.HubConnectionBuilder() .withUrl("/chathub") .withAutomaticReconnect(0, 0, 10000) .create(); b. const connection = new signalR.HubConnectionBuilder() .withUrl("/chathub") .withAutomaticReconnect([0, 0, 10000]) .build(); 2COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED c. const connection = new signalR.HubConnectionBuilder() .withUrl("/chathub") .withAutomaticReconnect([0], [0], [10000]) .build(); d. None of the others c - Choose the correct statement related to Networking Definitions a. Port: unsigned 4-byte integer helps operating system differentiating a network communicating process b. IP address includes IPv4 (4-byte) and IPv6 (6-byte) *c. IP address (Internet Protocol): unsigned integer helps to identify a network element(computer, router, etc)* d. None of the others d - Which of the following methods of the HttpClient Class can be used to send a POST request to the specified Uri as an asynchronous operation? a. CreatePostAsync(String, HttpContent) b. PostRequestAsync(String, HttpContent) c. PutAsync(String, HttpContent) *d. PostAsync(String, HttpContent)* a - Which of the following classes of the System.Threading.Tasks Namespace provides support for creating and scheduling Task objects? *a. TaskFactor* b. Task 3COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED c. TaskInit d. None of the others e. TaskScheduler c - In the case working ASP.NET SignalR with JavaScript client library, which the following code to create and start a connection? a. var connection = new signalR.ConnectionBuilder() .withUrl("/chatHub") .build(); (); b. var connection = new signalR.HubConnectionBuilder(.withUrl("/chatHub") .create(); (); c. var connection = new signalR.HubConnectionBuilder().withUrl("/chatHub") .build(); (); d. var connection = new signalR.HubBuilder() .withUrl("/chatHub") .build(); (); c - A hub is a class that serves as a high-level pipeline that handles client-server communication. Create a SignalR for your application by adding a class named ChatHub that inherits from Microsoft.AspNetCore.SignalR.Hub 4COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED a. public class ChatHub : IHub { public async Task SendMessage(string user, string message) { await Clients.All.SendAsync("ReceiveMessage", user, message); }} b. public class Hub : ChatHub { public async Task SendMessage(string user, string message) { await Clients.All.SendAsync("ReceiveMessage", user, message); } } c. public class ChatHub : Hub { public async Task SendMessage(string user, string message) { await Clients.All.SendAsync("ReceiveMessage", user, message); } d. public class ChatHub : IHubContext { public async Task SendMessage(string user, string message) { await Clients.All.SendAsync("ReceiveMessage", user, message); } } d - Choose the correct statement related to the HttpClient Class 5COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED a. HttpClient was written in response to the growth of TCP-based web APIs and TCP services to provide a better experience than the WebClient class b. None of the others c. HttpClient is a newer API for working with TCP Service and is designed to work well with libraries, REST-based services, and custom authentication schemes *d. HttpClient provides another layer on top of HttpWebRequest and HttpWeb Response* a - ASP.NET Core SignalR supports two protocols for encoding messages. Each protocol has serialization configuration options. Please choose the correct protocols. *a. JSON and MessagePack* b. BSON and MessagePack c. JSON and BSON d. JSON and XML a - Which of the following statements related to Worker Service .NET is False? Statement 1: A worker service is a .NET project built using a template which supplies a few useful features that turn a regular console application into something more powerful **Statement 2**: A worker service runs on bottom of the concept of a host, which maintains the lifetime of the application. The host also makes available some familiar features, such as dependency injection, logging, and configuration *a. Statement 2* b. Statement 1 and 2 c. Statement 1 6COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED d. None of the others d - Choose the correct option to create hub filters. a. Create a filter by declaring a class that inherits from HubIFilter, and add the OnConnectedAsync method. b. Create a filter by declaring a class that inherits from IFilter, and add the InvokeMethodAsync method. c. Create a filter by declaring a class that inherits from HubIHubFilter, and add the OnConnectedAsync method. *d. Create a filter by declaring a class that inherits from IHubFilter, and add the InvokeMethodAsync method.* e. None of the others a - Which of the following properties of the HttpClient Class can be used to get or set the base address of Uniform Resource Identifier (URI) of the Internet resource used when sending requests? *a. BaseAddress* b. GetAddress c. ContentURI d. BaseURI d - Which of the following applications that Worker Services will generally be long- running services, performing some regularly occurring