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Which of the following are valid TCP flags?
Suggested Answer: D
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TCP flags are used in the header of TCP segments to control the flow of data and to indicate the status of a connection. Valid TCP flags include:
FIN: Finish, used to terminate the connection.
PSH: Push, instructs the receiver to pass the data to the application immediately.
URG: Urgent, indicates that the data contained in the segment should be processed urgently.
RST: Reset, abruptly terminates the connection upon error or other conditions.
SYN: Synchronize, used during the initial handshake to establish a connection. These flags are integral to managing the state and flow of TCP connections. Reference:
Douglas E. Comer, 'Internetworking with TCP/IP Vol.1: Principles, Protocols, and Architecture'.
34 comments · newest first
AN
Antonio
11 months ago
I’m surprised none of these options mention the ACK flag in the right context!
CH
Chantay
11 months ago
I agree with D, but isn’t RST also a flag?
JU
Jutta
11 months ago
Wait, B has IGP? That’s not a TCP flag, right?
EL
Eliz
12 months ago
I thought B was right too, but I guess I was wrong.
KI
Kimbery
12 months ago
Definitely D! Those are all valid TCP flags.
RI
Rikki
1 year ago
I feel like I should know this, but I can't remember if RST is definitely a TCP flag or not.
DE
Derrick
1 year ago
I’m a bit confused because I thought B had some valid flags too, but I can't recall if IGP is a TCP flag.
DI
Dick
1 year ago
I practiced a similar question last week, and I think D is the right answer since it lists valid TCP flags.
MI
Micaela
1 year ago
I think I remember that TCP flags include FIN, SYN, and ACK, but I'm not sure about the others.
KA
Kaitlyn
1 year ago
Hmm, I'm not totally sure about this one. I think the valid flags are in option D, but I'll need to review the material to be certain.
KA
Karma
1 year ago
I've got this! The valid TCP flags are FIN, PSH, URG, RST, and SYN. I'm confident in that answer.
BE
Bernardine
1 year ago
I'm a bit confused on this one. I know some of the flags, but I'm not sure if I have the full list. I'll have to review my notes.
PA
Patria
1 year ago
Okay, let me see... I'm pretty sure the valid flags are FIN, PSH, URG, RST, and SYN, but I'll double-check that.
MI
Micheal
1 year ago
Hmm, this looks like a tricky one. I'll need to think carefully about the valid TCP flags.
LA
Layla
2 years ago
Haha, I bet the guy who wrote this question is just trying to see who's been paying attention in class. Good one, teach!
KY
Kyoko
2 years ago
A, of course! There's no such thing as a valid TCP flag. It's all just smoke and mirrors, man.
CH
Chantay
2 years ago
User3: I think D) FIN, PSH, URG, RST, SYN are valid TCP flags too.
TR
Tracey
2 years ago
User2: Actually, BGP, FIN, PSH, SYN, ACK are valid TCP flags.
RO
Royal
2 years ago
A) None of these
ST
Stephane
2 years ago
D all the way! Gotta love those URG flags, they make me feel so... urgent.
QU
Quentin
2 years ago
I prefer the ACK flag for acknowledging data received.
TR
Tracey
2 years ago
Yeah, the FIN flag is useful for terminating connections.
FA
Farrah
2 years ago
I think the SYN flag is also crucial for establishing connections.
TA
Tamekia
2 years ago
I agree, the URG flag is pretty important.
JU
Juan
2 years ago
Hmm, I'm not sure now. Maybe we should review the options again.
DU
Dulce
2 years ago
I disagree, I believe the valid TCP flags are IGP, ACK, SYN, PSH, URG.
DU
Dudley
2 years ago
I'm going with C. Who needs IGP and BGP when you've got good ol' FIN and ACK?
KA
Kasandra
2 years ago
C) BGP,FIN,PSH,SYN,ACK
BU
Buck
2 years ago
I'm going with C. Who needs IGP and BGP when you've got good ol' FIN and ACK?
DE
Detra
2 years ago
Hmm, I think D is the correct answer. Those TCP flags look pretty legit to me.
TA
Tawna
2 years ago
I agree, D seems to be the most accurate choice for valid TCP flags.
TA
Taryn
2 years ago
I'm not sure, but I think BGP is not a valid TCP flag.
NA
Naomi
2 years ago
I think D is correct too. Those flags are commonly used in TCP.
JU
Juan
2 years ago
I think the valid TCP flags are FIN, PSH, URG, RST, SYN.