Isaca CCOA Exam - Topic 5 Question 12 Discussion

Actual exam question for Isaca's CCOA exam

Question #: 12
Topic #: 5

[All CCOA Questions]

Which of the following is a network port for service message block (SMS)?

A445

B143

C389

D22

Show Suggested Answer

Suggested Answer: A

Port 445 is used by Server Message Block (SMB) protocol:

SMB Functionality: Allows file sharing, printer sharing, and access to network resources.

Protocol: Operates over TCP, typically on Windows systems.

Security Concerns: Often targeted for attacks like EternalBlue, which was exploited by the WannaCry ransomware.

Common Vulnerabilities: SMBv1 is outdated and vulnerable; it is recommended to use SMBv2 or SMBv3.

Incorrect Options:

B . 143: Used by IMAP for email retrieval.

C . 389: Used by LDAP for directory services.

D . 22: Used by SSH for secure remote access.

Exact Extract from CCOA Official Review Manual, 1st Edition:

Refer to Chapter 5, Section 'Common Network Ports and Services,' Subsection 'SMB and Network File Sharing' - Port 445 is commonly used for SMB file sharing on Windows networks.

by Olen at Nov 24, 2025, 01:59 PM

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Felicidad

1 month ago

I went with A too! It’s a common one.

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Mitzie

1 month ago

I was torn between A and B, but A feels correct.

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Delbert

2 months ago

Definitely A) 445. I remember studying that.

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Lindsey

2 months ago

Yeah, I agree! SMB uses that port.

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Melodie

2 months ago

I think it's A) 445. Seems right.

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Roosevelt

2 months ago

445? Really? That seems too easy.

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Lamar

2 months ago

I thought it was 143 for a second.

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Curt

2 months ago

Wait, are we sure about that?

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Donte

3 months ago

Agreed, 445 is the right one!

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Hortencia

3 months ago

It's definitely A) 445.

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Lourdes

3 months ago

A) 445 is the answer, but who even uses SMB these days? Telnet is where it's at!

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Alaine

4 months ago

C) 389 is for LDAP. Definitely not the right port for SMB.

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Lai

4 months ago

B) 143 is for IMAP, not SMB. This one's a no-brainer.

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Adell

4 months ago

D) 22 is for SSH, not SMB. Gotta pay attention to the question!

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Ronnie

4 months ago

I want to say 445 is correct, but I’m worried I might mix it up with another protocol.

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Sherron

4 months ago

I’m a bit confused because I know port 22 is for SSH, but I can't recall the others clearly.

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Aide

4 months ago

I feel like I saw a similar question about network ports in our practice exam, and I think 445 was the answer there too.

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Geraldo

5 months ago

I think I remember that SMB uses port 445, but I'm not completely sure.

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Deonna

5 months ago

I'm not too familiar with SMB, but I'm guessing it's probably one of the more common ports like 22 or 445. I'll try A) 445 and see.

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Long

5 months ago

I'm a bit confused on this one. I know SMB is related to file sharing, but I'm not sure about the specific port number.

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Letha

5 months ago

A) 445 is the correct answer. It's the default port for SMB.

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Casey

6 months ago

Okay, let me think this through. SMB is used for file and printer sharing, so the port is likely one of the common ones like 22, 80, or 445. I'll go with A) 445.

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