error on IP header p84

[sukarabi]

Sorry but the TCP header that I see on p84 is 24 bytes long not 20.

[pconlan]

If you are looking in the new CCNA study guide 6th edition, at the IP header that is on page 84. You can see that there is 20 bytes of header with a possible 4 byte addition if there are any options used. Which they are not always used.

[sukarabi]

Yes that what I understood first but the arrow is covering option area too.
So it could make confuse.

[pconlan]

Yes, I understand the arrow could be a little confusing. The arrow is just covering the entire area that could be the header. But typically there isn't anything in that field.