CCNA, CCNP, MCSA, CCNA Final Exam, All Answer Test Module With 100/100

I am looking to create a system which on signup will create a subdomain on my website for the users account area.

What is the correct way to log out of HTTP authentication protected folder?

Is there a way to allow multiple cross-domains using the Access-Control-Allow-Origin header?

Question Part A ▉ (100 bountys, awarded) Main question was how to make this site, load faster. First we needed to read these waterfalls. Thanks all for your suggestions on the waterfall readout analysis. Evident from the various waterfall graphs shown here is the main bottleneck: the PHP-generated thumbnails. The protocol-less jquery loading from CDN advised by David got my bounty, albeit making my site only 3% faster overall, and while not answering the site's main bottleneck. Time for for clarification of my question, and, another bounty:

What advantages do either method offer for html, css and javascript files served by a LAMP server. Are there better alternatives?

When would you consider using one over the other and why?

I would like to redirect www.example.com to example.com. The following htaccess code makes this happen:

I'm setting up a new server, and want to support UTF-8 fully in my web application. I have tried in the past on existing servers and always seem to end up having to fall back to ISO-8859-1.

Apache vs nginx vs lighttpd ? Which is simpler to configure and administer?

Chrome (or any other webkit browser) throws a ton of these "Unsafe JavaScript attempt to access frame with URL..." when working with the Facebook API for example.

I am playing around with the Oauth 2.0 authorization in Facebook and was wondering if the access tokens Facebook passes out ever expire. If so, is there a way to request a long-life access token?

Almost everyone has a Facebook account, even people who are not familiar with the Internet. With millions people actively using Facebook, updating their status, replying to messages, uploading photos and so on, how is Facebook's page still loading very fast?

I got addicted to Notepad++ on Windows and I've recently moved to Ubuntu. I'm missing a tool as such.

Which is the best gui client on Linux for Git. Update: After checking out all of the GUIs mentioned here,

Is there a (*nix) command-line script to format JSON in human-readable form?

I bumped into this strange macro code in /usr/include/linux/kernel.h : /* Force a compilation error if condition is true, but also produce a result (of value 0 and type size_t), so the expression can be used e.g. in a structure initializer (or where-ever else comma expressions aren't permitted). */ #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))

I've seen a couple questions around here like How to debug RESTful services , which mentions:

Im using $.post() to call a Servlet using Ajax and then use the resulting HTML fragment to replace a div element in the User's current page. However, if the session timeouts the server sends a redirect directive to send the user to the login page. Nonetheless, JQuery is replacing the div element with the contents of the login page, forcing the user's eyes to witness a rare scene indeed.

Using jQuery, how can I cancel/abort an Ajax request that I have not yet received the response from?

I would like to upload a file asynchronously with JQuery. This is my HTML:

I'm taking my first crack at Ajax with jQuery. I'm getting my data onto my page, but I'm having some trouble with the JSON data that is returned for Date data types. Basically, I'm getting a string back that looks like this:

Are there any repositories around for open sourced iPhone and iPad components?

I've noticed that there are many questions about how to handle UIImage objects, especially in conjunction with UIImagePickerController and then displaying it in a view (usually a UIImageView ). Here is a collection of common questions and their answers. Feel free to edit and add your own.

I like the Android platform. Actually, with some friends, we even participate to the ADC with the Spoxt project.

I have a 2.67 GHz Celeron processor, 1.21 GB of RAM on a x86 Windows XP Professional machine. My understanding is that the Android emulator should start fairly quickly on such a machine, but for me it does not. I have followed all instructions in setting up the IDE, SDKs, JDKs and such and have had some success in staring the emulator quickly but is very particulary. How can I, if possible, fix this problem?

Can anyone tell what is the difference between px, dip, dp and sp in android?

I'm trying to install the Android SDK on my Windows 7 x64 System. jdk-6u23-windows-x64.exe is installed, but the Android SDK setup refuses to proceed, because it doesn't find the JDK installation.

I am using Eclipse Android plugins to build a project, but I am getting this error in the console window:

What is the most efficient way to clone a JavaScript object? I've seen:

In jQuery, suppose you have an element of some kind that you're hiding and showing, using .hide() , .show() or .toggle() . How do you test to see if that element is currently hidden or visible on the screen?

Recently, I ran some of my JavaScript code through Crockford's JSLint , and it gave the following error:

There are a few JavaScript frameworks/toolsets out there, such as: jQuery ; Dojo ; Prototype ; YUI ; MooTools ; ExtJS ; SmartClient ; Zepto and others I'm sure.

How can I redirect the user from one page to another using jQuery?

Is there a plugin-less way of retrieving query string values via jQuery (or without)?

What is this? This is a collection of questions that come up every now and then about syntax in PHP. This is also a Community Wiki, so everyone is invited to participate in maintaining this list.

What would you recommend using between a datetime and a timestamp field, and why? (using mysql). I'm working with php on the server side.

So specifically in a mysql database, I understand that this is vulnerable to SQL injection . Take the following code and tell me what to do.