Eccouncil ICS-SCADA Exam - Topic 5 Question 21 Discussion

Actual exam question for Eccouncil's ICS-SCADA exam

Question #: 21
Topic #: 5

[All ICS-SCADA Questions]

Which of the following are valid TCP flags?

ANone of these

BIGP,ACK,SYN,PSH,URG

CBGP,FIN,PSH,SYN,ACK

DFIN,PSH,URG,RST,SYN

Show Suggested Answer

Suggested Answer: D

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'.

by Gayla at Nov 15, 2024, 06:05 PM

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Antonio

9 months ago

I’m surprised none of these options mention the ACK flag in the right context!

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Chantay

9 months ago

I agree with D, but isn’t RST also a flag?

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Jutta

10 months ago

Wait, B has IGP? That’s not a TCP flag, right?

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Eliz

10 months ago

I thought B was right too, but I guess I was wrong.

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Kimbery

10 months ago

Definitely D! Those are all valid TCP flags.

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Rikki

10 months ago

I feel like I should know this, but I can't remember if RST is definitely a TCP flag or not.

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Derrick

11 months 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.

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Dick

11 months ago

I practiced a similar question last week, and I think D is the right answer since it lists valid TCP flags.

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Micaela

11 months ago

I think I remember that TCP flags include FIN, SYN, and ACK, but I'm not sure about the others.

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Kaitlyn

11 months 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.

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Karma

11 months ago

I've got this! The valid TCP flags are FIN, PSH, URG, RST, and SYN. I'm confident in that answer.

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Bernardine

11 months 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.

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Patria

11 months 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.

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Micheal

11 months ago

Hmm, this looks like a tricky one. I'll need to think carefully about the valid TCP flags.

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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!

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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.

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Chantay

2 years ago

User3: I think D) FIN, PSH, URG, RST, SYN are valid TCP flags too.

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Tracey

2 years ago

User2: Actually, BGP, FIN, PSH, SYN, ACK are valid TCP flags.

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Royal

2 years ago

A) None of these

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Stephane

2 years ago

D all the way! Gotta love those URG flags, they make me feel so... urgent.

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Quentin

2 years ago

I prefer the ACK flag for acknowledging data received.

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Tracey

2 years ago

Yeah, the FIN flag is useful for terminating connections.

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Farrah

2 years ago

I think the SYN flag is also crucial for establishing connections.

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Tamekia

2 years ago

I agree, the URG flag is pretty important.

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Juan

2 years ago

Hmm, I'm not sure now. Maybe we should review the options again.

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Dulce

2 years ago

I disagree, I believe the valid TCP flags are IGP, ACK, SYN, PSH, URG.

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Dudley

2 years ago

I'm going with C. Who needs IGP and BGP when you've got good ol' FIN and ACK?

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Kasandra

2 years ago

C) BGP,FIN,PSH,SYN,ACK

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Buck

2 years ago

I'm going with C. Who needs IGP and BGP when you've got good ol' FIN and ACK?

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Detra

2 years ago

Hmm, I think D is the correct answer. Those TCP flags look pretty legit to me.

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Tawna

2 years ago

I agree, D seems to be the most accurate choice for valid TCP flags.

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Taryn

2 years ago

I'm not sure, but I think BGP is not a valid TCP flag.

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Naomi

2 years ago

I think D is correct too. Those flags are commonly used in TCP.

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Juan

2 years ago

I think the valid TCP flags are FIN, PSH, URG, RST, SYN.

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