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TC - Traffic Control
The Linux kernel's network stack has network traffic control and shaping features. The iproute2 package installs the tc command to control these via the command line. / Queuing controls how data is sent; receiving data is much more reactive with fewer network-oriented controls. However, since TCP/IP packets are sent using a slow start the system starts sending the packets slow and keeps sending them faster and faster until packets start getting rejected - it is therefore possible to control how much traffic is received on a LAN by dropping packets that arrive at a router before they get forwarded. There are more relevant details, but they do not touch directly on queuing logic.