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Juniper Exam JN0-335 Topic 7 Question 23 Discussion

Actual exam question for Juniper's JN0-335 exam
Question #: 23
Topic #: 7
[All JN0-335 Questions]

Which two statements about the DNS ALG are correct? (Choose two.)

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Suggested Answer: A, C

The DNS ALG is an application layer gateway that handles data associated with locating and translating domain names into IP addresses. It runs on port 53 and monitors DNS query and reply packets. Two statements about the DNS ALG that are correct are:

The DNS ALG supports DDNS: DDNS is Dynamic DNS, which is a method of updating DNS records in real time to reflect changes in network configurations or hostnames. The DNS ALG can process DDNS messages differently from DNS messages and perform address translation in the query part of the message.

The DNS ALG performs DNS doctoring: DNS doctoring is a technique of modifying the DNS reply packets to replace the original IP addresses with translated IP addresses that are suitable for the destination network. This allows the clients to access servers that are located behind NAT devices or in different networks.


by Xochitl at Apr 09, 2024, 09:15 PM

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Norah
9 months ago
That's right. The DNS ALG does perform DNS doctoring to manipulate DNS responses.
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Merilyn
9 months ago
I believe the DNS ALG also performs DNS doctoring.
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Pa
9 months ago
Yes, that's correct. It does support DDNS.
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Tori
10 months ago
I think the DNS ALG supports DDNS, right?
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Melynda
10 months ago
I don't think so, I haven't heard of the DNS ALG supporting VPN tunnels.
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Gilma
10 months ago
I'm not sure about VPN tunnels, do you think the DNS ALG supports that?
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Fannie
10 months ago
Yes, DNS doctoring is another feature of the DNS ALG.
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German
10 months ago
I believe the DNS ALG also performs DNS doctoring.
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Melynda
11 months ago
I agree, DDNS is one of the functions of the DNS ALG.
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Fannie
11 months ago
I think the DNS ALG supports DDNS.
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Vallie
12 months ago
As for VPN tunnels, I'm not sure if the DNS ALG directly supports that. It might depend on the specific implementation or network configuration.
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Tasia
1 years ago
You're right, the DNS ALG is designed to handle dynamic updates. That's an important feature for modern networks.
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Johnathon
1 years ago
Okay, let's start with the first option. I believe the DNS ALG does support DDNS, which allows dynamic updates to the DNS records.
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Devorah
1 years ago
Haha, 'DNS doctoring' - that sounds like some kind of medical procedure for DNS servers. I wonder what that actually means?
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Farrah
1 years ago
The DNS ALG is a crucial component of network security, so understanding its features is important. Let's discuss this step-by-step.
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Naomi
10 months ago
C) The DNS ALG performs DNS doctoring.
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Naomi
10 months ago
A) The DNS ALG supports DDNS.
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Melynda
1 years ago
This question seems straightforward, but I'm not sure about the exact capabilities of the DNS ALG. I'll have to think this through carefully.
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