As data travels on the media in a stream of 1s and 0s how does a receiving node identify the beginning and end of a frame?

Question:
As data travels on the media in a stream of 1s and 0s how does a receiving node identify the beginning and end of a frame?

• The transmitting node inserts start and stop bits into the frame.
• The transmitting node sends a beacon to notify that a data frame is attached.
• The receiving node identifies the beginning of a frame by seeing a physical address.
• The transmitting node sends an out-of-band signal to the receiver about the beginning of the frame.

Explanation: When data travels on the media, it is converted into a stream of 1s and 0s. The framing process inserts into the frame start and stop indicator flags so that the destination can detect the beginning and end of the frame.

Exam with this question: CCNA 1 (v5.1 + v6.0) Chapter 4 Exam Answers