Answer:
The Manchester encoding to describe the first octet pattern signal within the preamble is 10101010
Explanation:.
Solution
Given that:
The first octet value of Preamble is 10101010
The Manchester encoding to outline or describe the first octet of the signal pattern produced or created within the preamble is 10101010
Note: Kindly find an attached image of the first octet signal pattern produced below.