Google Top Searches today show two separate search strings halo reach beta code and microsoft expert zone, which got logically linked today, since Microsoft's community website, the Microsoft Expert Zone, was put down for some time today, preparing to give away free Halo Reach Beta codes for the website members.
Instructions on how to get 5 Halo Reach Beta codes
For a limited time, Microsoft Expert Zone members have been given the opportunity to take a Halo 3 Reach Beta quiz and collect free redemption tokens directly from Microsoft. All you need to do is get all the quiz answers right. Troy Hemingway has collected 100 points and received five answer beta codes with the answer key, which he kindly shares:
- You play as Master Chief in Halo 3: ODST. [FALSE]
- What does ODST stand for? [Orbital Drop Shock Tropper]
- What mission are the ODST on in the game? [Find clues pointing to the location of the disbursed squad and the reasons for the Convenant's attacks on New Mambosa]
- Players will continue to enjoy all the great “Halo 3” technological innovations, including Saved Films, screenshots, Campaign Scoring and four-player co-op over Xbox LIVE. [True]
- Who are the developers behind Halo 3: ODST? [Bungie]
- How many total multiplayer maps will be available at launch with Halo 3: ODST? 
- When do the events in Halo 3: ODST take place? [It's a prequel to the Halo 3 storyline]
- What special bonus do customers get when they purchase Halo 3: ODST? [Access to Halo Reach Multiplayer Beta]
What is all about?
Halo: Reach is an upcoming first-person shooter video game for the Xbox 360. It is part of the Halo series, and it is scheduled for release during the fall of 2010. The game takes place in the year 2552, where humanity is locked in a war with the alien Covenant. Players control Noble 6, a member of an elite supersoldier squad, during a battle for the human world of Reach.