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What does a firewall check to prevent certain ports and applications from getting the packets into an Enterprise?
Suggested Answer: B
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A firewall stops delivery of packets that are not marked safe by the Network Administrator. It checks the transport layer port numbers and the
application layer headers to prevent certain ports and applications from getting the packets into an Enterprise.
Answer C, A, and D are incorrect. These information are not checked by a firewall.
24 comments · newest first
CA
Callie
10 months ago
Surprised that people think it's anything other than B!
PE
Peter
10 months ago
I agree, B is the right choice!
PA
Paris
10 months ago
I thought firewalls checked session layer stuff too, but B seems solid.
JE
Jenelle
10 months ago
Wait, are we sure about that? I thought it was more about the network layer.
SE
Serina
11 months ago
It's definitely the transport layer port numbers and application layer headers.
TI
Tish
11 months ago
I don't recall much about the presentation layer being involved in firewall checks, so I'm leaning towards option B as well.
LI
Lisbeth
11 months ago
I feel like it could be option B, but I’m a bit confused about the role of session layer port numbers in this context.
AV
Avery
11 months ago
I remember practicing a question similar to this, and I think the correct answer is related to the transport layer.
AN
Anissa
11 months ago
I think firewalls mainly focus on the transport layer port numbers, but I'm not entirely sure if they also check application layer headers.
CA
Casey
12 months ago
The key here is understanding how firewalls operate at the different OSI layers. I'll need to carefully review the options and think about which layers are most relevant for firewall functionality.
LA
Lang
12 months ago
Okay, I think I've got this. Firewalls check the transport layer port numbers and the application layer headers to determine what traffic to allow or block.
VI
Vicki
12 months ago
Hmm, I'm a bit unsure about this one. I know firewalls have something to do with ports and applications, but I'm not sure which specific layers they check.
KR
Kristofer
1 year ago
This looks like a classic networking question. I'll need to focus on the different OSI layers and how firewalls work to filter traffic.
DA
Dana
1 year ago
I believe the correct answer is A) The network layer headers and the session layer port numbers because those are the layers where the firewall can control the flow of packets.
LE
Lezlie
1 year ago
I'm not sure, but I think it could also be the transport layer port numbers and the application layer headers.
RO
Rolande
1 year ago
I agree with Yong, it makes sense that the firewall would focus on those layers to prevent certain ports and applications.
YO
Yong
1 year ago
I think the firewall checks the network layer headers and the session layer port numbers.
DA
Dacia
1 year ago
Haha, the presentation layer? Really? That's like bringing a knife to a gun fight. Definitely B is the way to go.
TI
Tiera
1 year ago
I agree with Alana. Firewalls are all about the transport and application layers, not the network or presentation layers.
NE
Nenita
1 year ago
Yes, I agree. Firewalls focus on those layers to prevent certain ports and applications from getting packets into an Enterprise.
RE
Reta
1 year ago
I think the answer is B) The transport layer port numbers and the application layer headers.
AL
Alana
1 year ago
Option B seems to be the right answer here. The firewall checks the transport layer port numbers and the application layer headers to prevent certain ports and applications from getting the packets into the enterprise.
BO
Bonita
1 year ago
No, I believe it's option B, the transport layer port numbers and the application layer headers.
AR
Arlette
1 year ago
I think it's option A, the network layer headers and the session layer port numbers.