本次新西兰作业案例是一个网络编程代写相关的限时测试

Question 1. [15 marks]

A) What is a communication protocol in the context of network communications? Give two
examples of tasks a protocol could be responsible for?

B) Give a brief overview of the Internet Protocol Suite, listing any three of it’s five layers and
stating their responsibilities.

C) Name three key components of the World Wide Web.

D) What is a closure in PHP and what can it be used for?

E) Which HTTP method is not indempotent.

Question 2. [15 marks]

A) Given the contents of /www/public_html/index.php below, state the full path and
filename of where PHP will be looking for the appropriate class definitions when variables
$myBlah and $yourBlah are created.

<?php
namespace Foo;
spl_autoload_register(function ($class) {
$base_dir = __DIR__ . ‘/src/’;
$file = $base_dir . str_replace(‘\\’, ‘/’, $class) . ‘.php’;
require $file;
});
$myBlah = new Bar\Blah();
$yourBlah = new \Blah();

B) In reference to JavaScript, what does IIFE stand for and what is it’s use?

C) Name one common use of closures in JavaScript.

D) Why is jQuery code often declared in the following way?

$(document).ready(function(){
// jQuery code goes here…
});

E) There are multiple ways of creating user-defined objects in JavaScript. Briefly outline two
of them, giving an example in each case.

F) HTTP is a stateless protocol. Discuss what this means in the context of web applications
and what mechanisms exist to overcome any problems that arise from this.

G) Briefly explain the concept of Object-Relational Mapping and it’s benefits.

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程序代写代做C/C++/JAVA/安卓/PYTHON/留学生/PHP/APP开发/MATLAB

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