Answer: packets
Explanation:
Network navigation devices, such as routers, help data travel in bundles that are referred to as packets. As, networks that transfer the data in small packets are known as packet switching network and that packets carry the data using the internet and the protocol and each of the packet contain some information and data to navigate.
A source is where you can look to find info. Multiple means many or some.
Therefore, a multiple source test is a test that you can find the answers in multiple sources, such as a book, article, journal, etc.