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

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.

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?

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.

I'm using the America/New York timezone. In the Fall we "fall back" an hour -- effectively "gaining" one hour at 2am. At the transition point the following happens:

I have been browsing this site for the answer but I'm still a little unsure how to plan a similar system in its database structure and implementation.

Does anyone know how I can take a mysql datetime stamp, such as YYYY-MM-DD HH:MM:SS and either parse it or convert it to work in JavaScript's Date() function, such as.. Date('YYYY, MM, DD, HH, MM, SS);

I know, I know, title is quite bad, but I'll try to explain what I mean here. So, I ask my members to show their photos. They upload it somewhere, then paste their photos' URL into input and I save it to my database (MYSQL). Then, the photo is being seen on their profiles. I get the URL from database and do something like that: <img src="<?=$photo;?>" height="123px" width="123px">"> where $photo is URL taken from MYSQL. Is it totally safe? Can somebody upload for example .php file and harm my website? Do I need to check if URL's ending is .gif, .png, .jpg?

I am having trouble understanding how apache/php/mysql stack works on a low level (including interaction with the browser). Is there a good description somewhere (a book, a website, etc) that will walk me through the whole path and explaining how starting with a browser reqesting a url, http requests is being sent, how apache talks to php, how php talks to mysql (persistant and non-persistant connections), etc, etc. I want to understand what waits for what in this chain, where timeouts are handled, how long sockets are opened and closed. A book, an article maybe? There is a lot of documentation on each individual component, but I can't find a "walkthrough".

i made a mistake and i have to split 1 table into 2. i have a product table and i need category table. when i started i only had 1 category per product but not (with new business requirement) i need the ability to put a product in multiple category.

I have a website with stories in it. I can have multiple types of stories within multiple categories like:

I have a problem in writing a query for MySQL. I have following fields in the DB

There are 1 on 1 live chat. Two solutions: 1) I store every message into database and with jQuery's help I check if there is a new message in database every second. Of course I use cache either. If there is, we give that message.

I'm trying to develop a way of taking an entity with a number of properties and searching for similar entities in the database (matching as many of the properties in the correct order as possible). The idea is that it would then return a % of how similar it is.

after setting all config file and runtime options for charset that i can find to utf-8, new mysqli connections made with php still has its charset set to latin1, which effectively means that i have to call $mysqli->set_charset('utf8') each time i connect.

I am uncertain how to ask this concisely, so I will explain it through situational-context.

I have two very large tables to merge and so I have been trying to optomize the update for speed. I noticed that doing the update partially in PHP speeded it up significantly so I assumed this means I'm not be doing the MySQL properly.

Whenever I Google things like "php authentication library" I continue to come up with a ton of results of authentication libraries designed for Code Igniter.

While recreating my CMS, I wanted an alternative to the traditional parent/child approach for managing the sitemap / page hierarchy. I had remembered seeing the nested set model a while back, but couldn't remember what it was called. So, I stumbled upon a similar approach that I want to evaluate and compare the properties, making sure I won't run into dumb limitations later on because I didn't go with what is already time-tested. So, please advise if A) it's already been invented (what's it called?!), B) there are fundamental flaws in the properties, or C) it's a good approach (please give good justification!).

i have 2 servsers 1 in america (NY) and 1 in europe (London)