LPI 300-300 Exam - Topic 3 Question 13 Discussion

Actual exam question for LPI's 300-300 exam

Question #: 13
Topic #: 3

[All 300-300 Questions]

Which of the following TCP ports is used to provide the SMB protocol without NetBIOS?

A133

B138

C139

D386

E445

Show Suggested Answer

Suggested Answer: E

The SMB protocol (Server Message Block) is used for providing shared access to files and printers.

Historically, SMB ran on top of NetBIOS over TCP/IP using port 139.

SMB can also run directly over TCP/IP without the NetBIOS layer, which uses port 445.

Therefore, TCP port 445 is used to provide the SMB protocol without NetBIOS.

Official IANA port numbers: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml

Microsoft documentation on SMB: https://docs.microsoft.com/en-us/windows/win32/fileio/microsoft-smb-protocol-and-cifs-protocol-overview

by Lisha at Sep 11, 2024, 04:29 AM

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Estrella

7 months ago

Just to clarify, 138 is for NetBIOS datagram service, right?

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Santos

7 months ago

445 is the standard for that, no doubt!

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Alana

7 months ago

Wait, are you sure? I thought it was 139.

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Curtis

8 months ago

Agreed, 445 is the right one!

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Chan

8 months ago

It's definitely port 445 for SMB without NetBIOS.

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Xuan

8 months ago

I feel like I’ve seen 138 mentioned in some context, but I’m pretty sure it’s not the right answer for this question.

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Dorthy

8 months ago

I’m a bit confused; I thought SMB used both 139 and 445, but I guess 445 is the one without NetBIOS?

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Page

8 months ago

I remember practicing a similar question, and I think 139 is related to NetBIOS, so it can't be the answer.

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William

9 months ago

I think SMB without NetBIOS uses port 445, but I’m not entirely sure.

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Twanna

9 months ago

I've got a good feeling about option E. 445 seems like the most likely answer based on what I know about SMB.

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Sharika

9 months ago

Okay, let me review the networking protocols again. I want to make sure I get this right.

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Jenelle

9 months ago

Port 139 is the traditional SMB port, but I think the question is asking about the newer SMB over TCP protocol, which uses port 445.

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Sabine

9 months ago

Hmm, I'm a bit unsure about this one. I'll have to think it through carefully.

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Daniela

9 months ago

I'm pretty sure it's port 445 for SMB without NetBIOS.

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Derrick

2 years ago

I bet the correct answer is 'all of the above' just to mess with us.

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Quentin

2 years ago

I believe it's E) 445 because NetBIOS is not needed for SMB protocol on that port.

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Salena

2 years ago

Ah, I remember learning this in my networking class. Gotta be 445, right?

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Marcelle

2 years ago

Wait, does SMB even work without NetBIOS? I'm scratching my head here.

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Kassandra

2 years ago

Good to know, thanks for clarifying!

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Alexis

2 years ago

Yeah, E) 445 is correct. SMB can work without NetBIOS.

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Rebeca

2 years ago

I think it's E) 445.

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Jesus

2 years ago

E) 445

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Ludivina

2 years ago

D) 386

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Mitsue

2 years ago

C) 139

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Nicolette

2 years ago

B) 138

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Jaclyn

2 years ago

A) 133

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Pansy

2 years ago

I'm not sure, but I think it's either C) 139 or E) 445.

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Gracia

2 years ago

Hmm, I thought SMB was all about NetBIOS. This is a tricky one!

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Lasandra

2 years ago

Thanks for clarifying that! I'll remember that for next time.

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Nidia

2 years ago

Yeah, I agree. E) 445 is the correct answer for SMB without NetBIOS.

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Raelene

2 years ago

I think it's E) 445

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Jesus

2 years ago

E) 445

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Jess

2 years ago

D) 386

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Dortha

2 years ago

C) 139

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Lorita

2 years ago

Thanks for the clarification!

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Vincent

2 years ago

Yeah, I agree. E) 445 is the correct answer.

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Pansy

2 years ago

I think it's E) 445

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Lakeesha

2 years ago

E) 445

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Lai

2 years ago

D) 386

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Arlette

2 years ago

B) 138

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Lashawn

2 years ago

A) 133

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Oretha

2 years ago

C) 139

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Buffy

2 years ago

B) 138

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Markus

2 years ago

A) 133

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Fletcher

2 years ago

I agree with Celeste, port 445 is used for SMB protocol without NetBIOS.

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Celeste

2 years ago

I think the answer is E) 445.

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