Final answer:
The lack of access to certain websites on the library's wireless network may be due to content filtering, technical issues, or a temporary network error. The library may use content filtering policies, there might be technical glitches, or they could be facing WiFi network problems.
Step-by-step explanation:
There can be several reasons why you might not be able to access certain websites on the library's wireless network while being able to connect to others. First, content filtering might be in place, where the library intentionally blocks access to websites it considers inappropriate or not in line with its usage policies.
Another possible reason is a technical issue, such as the websites being down or issues with the library's DNS settings that prevent those specific websites from resolving. Additionally, if the sites require specific plugins or settings that the library computers do not support, this could also restrict access. Lastly, it might happen that you're encountering a network error, which could be temporary and resolve itself after a brief period, or could need attention from the library's IT department to address a problem with their WiFi network.