The design architecture of USB is asymmetrical in its topology, consisting of a host, a multitude of downstream USB ports, and multiple peripheral devices connected in a tiered-star topology. Additional USB hubs may be included in the tiers, allowing branching into a tree structure with up to five tier levels. A USB host may implement multiple host controllers and each host controller may provide one or more USB ports. Up to 127 devices, including hub devices if present, may be connected to a single host controller. USB devices are linked in series through hubs. One hub—built into the host controller—is the root hub. COUNT 9
QSN1 The design of USB is asymmetrical in what? ANS1 its topology QSN2 How many devices may be connected to a host controller? ANS2 127 devices QSN3 How are USB devices linked? ANS3 in series through hubs QSN4 What HUB is built into the host controller? ANS4 the root hub QSN5 The design of the USB is asymmetrical in its what? ANS5 topology QSN6 How many devices can be connected to a host controller? ANS6 Up to 127 devices QSN7 What hub is built into the host controller? ANS7 the root hub QSN8 A USB host may implement how many host controllers? ANS8 multiple QSN9 How many USB ports may a host controller provide? ANS9 one or more USB ports