"Connected" routes refer to networks that are directly connected to the router's interfaces, and they are represented by "C". Given this information, the letter code "C" in a routing table output signifies that the route is connected. What to do within a network where. There is a file/folder named c$ that seems to not exist only if your type it. You can access things in 'c$', like for example folder1/folder2/c$/file. But when I back out c$, I cannot find c$. What does the C$ stand for and why isn't it C: ? Shares with a $ are hidden shares (also called "Administrative shares" as mentioned by Diskilla) and thus not visible when requesting the share list of a device. There are several. Cisco icons are globally recognized and generally accepted as standard for network icon topologies.