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CompTIA SK0-005 Exam - Topic 1 Question 45 Discussion

A server administrator deployed a new product that uses a non-standard port for web access on port 8443. However, users are unable to access the newapplication. The server administrator checks firewall rules and determines 8443 is allowed. Which of the following is most likely the cause of the issue?
B) The new application's DNS entry is incorrect.
A) Intrusion detection is blocking the port.
C) The application should be changed to use port 443.
D) The core switch has a network issue.

CompTIA SK0-005 Exam - Topic 1 Question 45 Discussion

Actual exam question for CompTIA's SK0-005 exam
Question #: 45
Topic #: 1
[All SK0-005 Questions]

A server administrator deployed a new product that uses a non-standard port for web access on port 8443. However, users are unable to access the new

application. The server administrator checks firewall rules and determines 8443 is allowed. Which of the following is most likely the cause of the issue?

Show Suggested Answer Hide Answer
Suggested Answer: B

A DNS entry is a record that maps a domain name to an IP address. If the DNS entry for the new application is incorrect, users will not be able to resolve the domain name to the correct IP address and port number. This will prevent them from accessing the application, even if the firewall rules allow port 8443. To fix this issue, the server administrator should verify and update the DNS entry for the new application.


by Xochitl at Dec 26, 2023, 05:22 AM

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Mauricio
10 months ago
Intrusion detection blocking it seems a bit far-fetched.
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Brandon
10 months ago
Wait, could the core switch really be causing this?
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Candida
10 months ago
I agree, 443 is the way to go for web apps!
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Ashton
10 months ago
Definitely not a fan of using non-standard ports.
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Keshia
11 months ago
I think it's probably the DNS entry that's wrong.
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Elin
11 months ago
Could it be a network issue with the core switch? I feel like option D might be worth considering, but I need to think it through more.
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Francesco
11 months ago
I practiced a similar question where changing the port to 443 resolved access issues, but I'm not convinced that's the right move here.
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Doug
11 months ago
I'm not entirely sure, but I think if the DNS entry is wrong, users wouldn't even reach the server, which makes option B less likely.
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Delisa
11 months ago
I remember something about intrusion detection systems possibly blocking non-standard ports, so option A could be a possibility.
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Shay
11 months ago
The application should use port 443 for web access, so that's my best guess. Changing the port might be the quickest fix.
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Walker
11 months ago
I'm leaning towards the intrusion detection system being the culprit. That's the first thing I'd check if I were the server admin.
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Mickie
11 months ago
Hmm, this seems like a tricky one. I'll need to think through the different possibilities carefully.
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Paulina
11 months ago
Okay, let's see. The firewall rules are allowing port 8443, so that's not the issue. I'm wondering if the DNS entry could be the problem.
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Dylan
12 months ago
This is a tricky one, but I think the best approach is to carefully compare the given information to the characteristics of each algorithm. The key size and block size are the most important factors to consider.
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Chauncey
12 months ago
Hmm, I'm a bit confused by the different options here. I'll need to carefully review the EIGRP configuration commands to determine the right approach.
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Jacqueline
12 months ago
Hmm, this seems like a tricky one. I'll need to think carefully about the behavior of the Alcatel-Lucent 7750 SR and how it handles VLAN tags.
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Isadora
2 years ago
Haha, yeah, the IDS could definitely be the troublemaker here. Those security systems can be real party poopers sometimes. But I'm with you all on the DNS entry being the most likely culprit. That's usually where these kinds of access problems start.
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Fannie
2 years ago
You both make good points. I'm wondering if it could also be an Intrusion Detection System (IDS) issue. Sometimes those systems can be a bit overzealous and block non-standard ports, even if they're allowed in the firewall.
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Jonell
2 years ago
True, IDS can sometimes cause issues with non-standard ports.
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Chara
2 years ago
It's possible that IDS is blocking the non-standard port.
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Dong
2 years ago
Intrusion Detection System could be the problem.
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Sherill
2 years ago
D) The core switch has a network issue.
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Salena
2 years ago
C) The application should be changed to use port 443.
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Francoise
2 years ago
B) The new application's DNS entry is incorrect.
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Veronika
2 years ago
A) Intrusion detection is blocking the port.
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Han
2 years ago
I was thinking the same thing, Domitila. The DNS entry seems like the most likely culprit here. If users can't access the new application, that points to a resolution problem rather than a network or firewall issue.
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Domitila
2 years ago
Hmm, this is a tricky one. I'm leaning towards B - the DNS entry being incorrect. If the firewall is allowing port 8443, then it shouldn't be a network issue. And using port 443 would be too obvious, so I doubt it's C.
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