http://www.navy.com/about/navylife/onduty/cryptology/


go to that link and click on take the challenge...
I Don't think it will help you much at all but will give idea of what it is although Ive read that its very easy compared to the actual test.

Hey just wanted to say that I took the DLAB and got a 108, and I have to admit I don't think anyone could prepare for it. It's not something you learn. It's to gauge your aptitude for learning languages. You really just shouldn't stress over it. Either you're good at it or not. It's just that simple! lol. It was really tough, though, especially on the 3 hours sleep I got with that horribly early wakeup call and all those tests we had to go through prior (Mine was on the same day as the physical and contract signing and stuff). Just trust that you can use your wits to try and understand a completely made up language with bogus rules. No amount of websites or practice tests are going to prepare you for it! I promise. LOL Just think positive.

Seems like people who think very analytically (booksmarts) do well on tests like these.

I did not, 2 separate times 6 months apart. It was the hardest test I have ever taken. The conclusion I have drawn is that it is pure random luck that gets you to pass.

I took the DLAB in March and got a 114 and I used the following bit from about.com to help me study:

* Having a very clear understanding of English grammar. You will need to know all parts of speech and how they work. You may wish to get your hands on a good college level grammar text book and study that for awhile before taking the test. Understand how English sentences are constructed (i.e. Subject-Verb-Object). Fooling around with this construction will help you on the DLAB.

* Be able to recognize accentuation and stress patterns in words. Know where syllable breaks are in words. (VERY important)

* Have some experience with a foreign language. If you want to be a Russian linguist, it is not necessary that you have experience with Russian. However, if you have some experience with a foreign language, it will help you to understand that different languages use sentence structures differently than English.

* Be prepared to interpret instructions based on pictures. For example, a picture of a red car is presented with the word "ZEEZOOM". Next, a picture of a blue car is presented with the word "KEEZOOM". Next, a picture of a red bus is presented with the word "ZEEBOOM". You must be able to give the foreign word for a "blue bus". (This section was the hardest for me)

http://usmilitary.about.com/cs/joiningup/a/dlab.htm

This was by far one of the hardest tests I have ever taken for the simple fact that you really have no idea if you are getting a question right or wrong for the most part. I thought I bombed the test. I hope this helps anyone taking it in the future.

Thisguy, I am glad someone is coming on here being honest and attesting to the difficulty of the test. There are many troops that come on here and do a posting thinking that they are good to go for a Language MOS because they had a good ASVAB score and had good grades in college (hell I am one too). What a person never sees on this forum is that same poster 3 or more months down the road coming back on and admitting that they failed the hell out of it.