A. General Facility Requirements

  • 15 Internet-connected computers and cache proxy that are no more than three years old and meet current specifications
  • The ability to dedicate resources to testing
  • The ability to restrict other activities in the room during an estimated six-hour test period

B. Computer Requirements

  • Administrative Station: Required for image capture, candidate check-in and other administrative tasks.
  • Cache Proxy (or IAS Local Server): Required for storing test delivery information and temporary storage of candidate results.
  • Testing Stations: Required for delivering tests (one testing station per candidate).

C. iBT Supported Operating Systems:

iBT Supported Operating Systems and Browsers
Operating Systems*Vista® with SP2 32 and 64-bitWindows 7 with SP1 32 and 64-bitWindows 8 32 and 64-bit
BrowserIE v7, v8, v9IE v8, v9IE v10

*Windows XP and Vista — Support will be terminated as of April 30, 2014.


  • The operating system should reside on and boot from the computer’s local hard disk. Virtual machines and thin clients are not supported.
  • Macintosh or iMac are not supported or approved for use with test delivery on the iBT platform.
  • Microsoft® Server Operating System or Linux® are not supported.

D. Local Area Network and Internet Connectivity:

Cache Proxy, Administrative and Testing Station computers should reside on a Local Area Network (LAN) in the same subnet to allow communication between machines without blocking of any port. In addition, the computers should be connected to the Internet via a broadband Internet connection such as DSL or better.

We strongly recommend using a separate device for LAN (switch) and Internet connectivity (router) instead of using an integrated device.

E. Specifications for Administrative and Testing Stations:

  • Minimum Processor: Intel® Core™ 2 Duo 2.66GHz or equivalent
  • Minimum Installed Memory: 2 GB
  • Minimum Free Memory: 1 GB
  • Free Disk Space: 1 GB
  • Display Adapter: 1024×768 resolution, with 32-bit color depth / 65,536 colors
  • Display Monitor: Widescreen monitors (aspect ratio other than 4:3) are not supported
  • Display Monitor Screen Size:
    • CRT: 17-inch screen or higher
    • LCD: 15-inch screen or higher
  • Sound Card: 44.1 KHz (or better) sample rate

Note: Logitech® C270, C210, C170 and Microsoft VX800 webcams are approved for image capture at the Administrative Station. KOSS® SB45 headsets are approved for audio recording/playback on the Testing Stations.

F. Specifications for Cache Proxy (or IAS Local Server) Computers:

Up to 40 concurrent test takers:

  • Minimum Processor: Intel® Core™ 2 Quad 2.4 GHz
  • Minimum Installed Memory: 4 GB
  • Minimum Free Memory: 2 GB
  • Minimum Free Disk Space: 4 GB

G. Test Center Configuration Tips:

The test center technicians must review the technical configuration tips available here.

This will help them in configuring the test center network and desktop environment for iBT test delivery.