1D0-510 · Question #64
Which common peripheral connection port can support up to 127 peripherals, and support speeds of up to 480 Kbps?
The correct answer is B. USB 2.0. See the full explanation below for the reasoning.
Question
Options
- AUSB 1.0
- BUSB 2.0
- CFireWire
- DGame Port
How the community answered
(43 responses)- A5% (2)
- B72% (31)
- C7% (3)
- D16% (7)
Community Discussion
6
Imani T.Jun 11, 2026USB 2.0 is your answer (B). It supports up to 127 daisy-chained devices and tops out at 480 Mbps, which is why it was a massive upgrade over USB 1.1, and that 127-device limit combined with the 480 Mbps figure is a classic combo they test on the 1D0-510.
Nina C.Jun 12, 2026Just want to flag one thing that tripped me up too, USB does not technically daisy-chain, it uses a hub-and-spoke topology, so those 127 devices connect through hubs rather than one after another in a chain, and some exams actually test that distinction separately from the 480 Mbps spec.
Carlos M.Jun 24, 2026USB 2.0 is correct. It supports up to 127 daisy-chained devices and tops out at 480 Mbps (Hi-Speed), while USB 1.0 only hits 12 Mbps max, so A is out right there.
Hiroshi T.Jun 26, 2026B is correct. The USB 2.0 specification, published by the USB Implementers Forum, documents the 127-device limit via hub chaining and the 480 Mbps Hi-Speed transfer rate (the question has a typo, Kbps should read Mbps, but the answer is still B), and on my actual 1D0-510 sitting I flagged this one immediately because the CIW courseware drills that 127-device ceiling and that Hi-Speed tier hard enough that C and D were never real candidates.
Nina C.Jun 16, 2026Has to be A, USB 1.0 checks every box here.
Carlos M.Jun 17, 2026Nina, USB 2.0 is the better fit here because it introduced Hi-Speed mode at 480 Mbps, which is a major jump over USB 1.0's 12 Mbps max, so B covers the requirement more completely.