本測驗並非正式劍橋英語認證測驗，測驗後所得評分僅供考生參考。您在此測驗中的分數無法當作正式語言能力證明

Information-Style: The ask for is uploading an image file named cat1.jpg employing a type of information identified as multipart/kind-knowledge. The picture is in JPEG format and its content is included in the request human body.

Customer equipment submit HTTP requests to servers, which reply by sending HTTP responses back again for the clients. Requests condition what data the shopper is trying to get from your server to be able to load the web site; responses include code which the client browser will translate right into a webpage.

The shopper gets the response message and procedures it, normally by rendering the content material in a web browser or exhibiting it within an application.

HTTP follows a classical shopper-server model, with a shopper opening a relationship to generate a request, then waiting around until eventually it receives a reaction from the server.

The essential characteristics of HTTP, what it can do, its supposed use in Internet architecture, and its position inside the protocol stack.

在浩瀚的英文單字海洋中，如何有效率地記憶並理解這些單字，一直是許多英語學習者苦惱的問題。而「英文字根法」正是其中一個可以幫助我們輕鬆破解英文單字密碼的利器。透過了解單字中的英文字根，我們不僅能夠快速掌握字義，更能靈活運用這些字根在日常生活中。

The shopper initiates a request for the server by sending an HTTP request message, which has info such as the requested source and any more parameters.

. It is actually the foundation of useful resource and data Trade here online, and HTTP classes are Usually initiated because of the recipient in the assets.

HTTP provides a normal framework for access control and authentication, via an extensible set of challenge–reaction authentication strategies, which can be used by a server to problem a client request and by a client to supply authentication information and facts.[one]

HTTP/one.1 added also HTTP pipelining as a way to additional reduce lag time when employing persistent connections by making it possible for purchasers to ship a number of requests ahead of expecting Every reaction. This optimization was by no means viewed as actually Risk-free for the reason that a number of World wide web servers and lots of proxy servers, specifically transparent proxy servers put in Web / Intranets involving consumers and servers, did not cope with pipelined requests correctly (they served only the main ask for discarding the others, they closed the connection since they noticed a lot more knowledge just after the initial ask for or some proxies even returned responses out of order etc.

Ask for header fields enable the consumer to go additional data past the request line, acting as ask for modifiers (in the same way to the parameters of a process). They offer specifics of the customer, about the target resource, or regarding the expected handling with the ask for.

Considering that HTTP/0.nine didn't guidance header fields inside of a request, there isn't any system for it to help identify-dependent Digital hosts (selection of resource by inspection of the Host header discipline).

to implement one or more bidirectional streams for every TCP/IP connection through which HTTP requests and responses are broken down and transmitted in smaller packets to Virtually address the challenge from the HOLB (head-of-line blocking).[Take note 1]