Transmission control protocol accepts data from a data stream, divides it into chunks, and adds a TCP header creating a TCP segment. The TCP header is the first 24 bytes of a TCP segment that contains the parameters and state of an end-to-end TCP socket. It is used to track the state of communication between two TCP endpoints.
For a connection to be established or initialized, the two hosts must synchronize. The synchronization requires each side to send its own initial sequence number and to receive a confirmation of exchange in an acknowledgment (ACK) from the other side
The below diagram shows the TCP Header format:

Suggested Answer: B
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35 comments · newest first
JO
Joseph
11 months ago
32 bits sounds about right for some headers, but not TCP.
MA
Malcolm
11 months ago
It's all about that initial sequence number!
LI
Lisha
11 months ago
Wait, is it really 24 bytes? I thought it was different.
MI
Minna
12 months ago
Yep, totally agree!
LE
Lelia
12 months ago
TCP header is 24 bytes, right?
IR
Irving
1 year ago
I believe the initial sequence number is 32 bits, but I'm a bit confused about how that relates to the overall TCP header size.
RU
Rusty
1 year ago
I practiced a similar question about TCP segments, and I recall that the header has specific fields, but I can't remember the exact bit sizes.
CA
Casie
1 year ago
I think the TCP header is 32 bits in total, but I need to double-check if that's for the entire header or just a part of it.
JO
Josphine
1 year ago
I remember studying the TCP header format, but I'm not sure how many bits are allocated for the sequence number.
LE
Lewis
1 year ago
This seems like a straightforward question, but I want to make sure I'm not missing anything. I'll review the information about TCP synchronization and the header format to solidify my understanding before answering.
KR
Kristel
1 year ago
I'm a little confused by the different options. The question mentions the TCP header is 24 bytes, but the answer choices are in bits. I'll need to double-check the units to make sure I select the correct answer.
FE
Fernanda
1 year ago
Okay, I got this. The question is asking about the size of the TCP header, and the diagram clearly shows it's 24 bits. I'm confident I can get this right.
GA
Gayla
1 year ago
Hmm, I'm a bit unsure about this one. The TCP header seems complex, and I want to make sure I understand it fully before answering. I'll need to review the details closely.
AU
Augustine
1 year ago
The TCP header format looks straightforward, so I think I can handle this question. I'll carefully review the information provided and the diagram to determine the correct answer.
LE
Leonora
2 years ago
Wow, 32 bits, huh? That's a lot of information packed into a tiny little header. I bet the engineers who designed this were real TCP nerds. I wonder if they high-fived every time they came up with a new field to add.
VA
Vallie
2 years ago
8 bits? Seriously? I think someone needs to go back to TCP 101. This is a classic case of not reading the question properly. 24 bits, all the way!
IS
Isaac
2 years ago
Definitely not 8 bits, that would be too small for a TCP header. 24 bits is the right choice.
EL
Elenore
2 years ago
Yeah, 24 bits is the size of the TCP header. It's crucial for establishing communication between hosts.
PU
Pura
2 years ago
I agree, 24 bits is the correct answer. It's important to pay attention to the details.
SH
Sheridan
2 years ago
I'm not sure, but I think it's B) 32 bits because it needs to contain enough information for the TCP communication.
FE
Felicidad
2 years ago
I'm pretty sure it's 24 bits. I mean, the diagram clearly shows a 24-bit header, so that's gotta be the right answer. You can't argue with visual evidence, right?
DE
Delmy
2 years ago
Yeah, the visual evidence is pretty clear.
LA
Lawrence
2 years ago
I agree, the diagram shows a 24-bit header.
EF
Effie
2 years ago
No way, it's definitely 24 bits.
KE
Kenneth
2 years ago
I think it's 32 bits.
LA
Lawrence
2 years ago
I agree with Emmett, the TCP header is 32 bits long.
EM
Emmett
2 years ago
I think the answer is B) 32 bits.
ME
Melinda
2 years ago
The TCP header is definitely 32 bits! I mean, it's got all the important stuff like source and destination ports, sequence numbers, and the control flags. Gotta love those 32 bits of glory!
GL
Gladys
2 years ago
Definitely, those 32 bits contain crucial information for establishing a connection.
AL
Alaine
2 years ago
I always make sure to pay attention to the source and destination ports in the header.
SH
Shaun
2 years ago
Yeah, it's important for tracking the state of communication between two TCP endpoints.
NU
Nu
2 years ago
Yes, the 32-bit TCP header plays a vital role in ensuring data is properly segmented, transmitted, and acknowledged between endpoints.
DE
Delfina
2 years ago
Absolutely, those 32 bits contain essential information for reliable data transmission. It's a fundamental part of the TCP protocol.
SH
Shaunna
2 years ago
I agree, the TCP header is indeed 32 bits long. It's crucial for establishing and maintaining communication between two hosts.
RI
Ricarda
2 years ago
I think you're right, the TCP header is indeed 32 bits.