Which statement differentiates downstream and upstream in a DOCSIS network?

Which statement differentiates downstream and upstream in a DOCSIS network?

• A. Downstream transports data from the headend to modems; Upstream transports data from modems to the headend.
• B. Downstream carries data from the headend to modems; Upstream carries data from modems to the headend.
• C. Downstream transmits only video; Upstream transmits data
• D. They are the same direction

Answer: (B)

Downstream and upstream refer to the direction of data flow in a DOCSIS network. Downstream is the path from the headend to the customer modems, delivering data to users. Upstream is the return path from the modems back to the headend. This separation lets the provider broadcast data to many modems while modems coordinate their ability to send requests and data back upstream. The correct statement captures this flow: data travels from the headend to modems downstream, and data travels from modems to the headend upstream. The other options either reverse the direction, imply only video traffic, or claim there’s no directional difference.

Downstream and upstream refer to the direction of data flow in a DOCSIS network. Downstream is the path from the headend to the customer modems, delivering data to users. Upstream is the return path from the modems back to the headend. This separation lets the provider broadcast data to many modems while modems coordinate their ability to send requests and data back upstream. The correct statement captures this flow: data travels from the headend to modems downstream, and data travels from modems to the headend upstream. The other options either reverse the direction, imply only video traffic, or claim there’s no directional difference.