Determining Required Bandwidth
Bandwidth is the measure of a network's capacity or utilization, usually measured in terms of bits per second.
To ensure a smooth administration, AIR® recommends network bandwidth of at least 20 kilobits per second for each student taking the test at the same time.
Bandwidth consumed by opening the secure browser and accessing a test for the first time is significantly more than when it is opened and accessed again because a lot of nontest content must be cached when the secure browser is first accessed.
Whitelisting URLs for Non-Testing Sites
Whitelisting URLs for the TA and Student Testing Sites
Use a wildcard to whitelist these URLs at the root level because testing servers and satellites may be changed during the school year:
Required Ports and Protocols
The table below lists the ports and protocols used by the test delivery system. Ensure that all necessary content filters, firewalls, and proxy servers are open.
Ports and Protocols for Test Delivery System
|80/TCP||HTTP (initial connection only)|
|443/TCP||HTTPS (secure connection)|
Configuring for Certificate Revocations
AIR servers present certificates to the clients. To check those certificates for revocation, use a certificate revocation list or an online certificate status protocol.
Certificate Revocation List
To use a certificate revocation list, your firewalls must allow this URL: http://crl.verisign.com/
Online Certificate Status Protocol (OCSP)
To use the OCSP, your firewalls must allow the domain names listed below. These patterned URLs are preferred because they are more robust:
If necessary, you can use fully qualified URLs instead:
AIR Guide for Digital Testing Technology
Covers basic technology requirements for online testing using American Institutes for Research® (AIR®) systems in 2019-20.
Chrome OS Technology Guide
This manual provides instructions for installing the secure browser on computers and devices on Chrome OS, used for College Board digital test administrations.
Windows Technology Guide
Provides instructions for installing the CB Secure Browser on test takers' computers and devices running Windows OS.
Mac OS Technology Guide
Provides instructions for installing the CB Secure Browser on test takers' computers and devices running Mac OS.
Linux Technology Guide
Provides instructions for installing the CB Secure Browser on test takers' computers and devices running Linux.
iOS and iPadOS Technology Guide
Provides instructions for installing AIR Secure Test on test taker iPads running iOS or iPadOS.