Which device intercepts internal user requests and then processes those requests on behalf of the users?

You are almost finished updating a web site. as part of the update, you have converted all pages from html 4.0 to html5. the project is currently on schedule. however, your project manager has been asked by the marketing team manager to justify a day of time spent validating the site's html5 pages. the marketing team manager does not have technical knowledge of the internet or the web. which is the most appropriate explanation to provide to the marketing team manager?

Distinguish between a skill resume and a chronological resume and explain when it is best to use each format

Does anyone have the problem where you try to watch a video to get your answer but it brings up a thing asking your gender to make ads relevant but it doesn't load? btw i won't be able to see the answer so use the comments .