The IPv4 header field...
So I came across the IPv4 header topic whilst studying, and it's probably been my greatest obstacle so far.
There's several fields that we had to be aware of; I can understand what each part does, but I *can't*, for the life of me, remember how many bits are in each field.
For example, I can understand and explain in full detail what the identification field or the flags field represent with no hassle, but if you ask me the length of each one, my mind blanks 😭
I'm not sure if this can legally be answered but is this something they expect you to remember in the exam??