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Juniper Exam JN0-363 Topic 3 Question 59 Discussion

Actual exam question for Juniper's JN0-363 exam
Question #: 59
Topic #: 3
[All JN0-363 Questions]

Which new field is added to an IPv6 header as compared to IPv4?

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Suggested Answer: A

https://www.omnisecu.com/tcpip/ipv6/comparison-between-ipv4-header-and-ipv6-header.php#:~:text=IPv6%20header%20is%20much%20simpler%20than%20IPv4%20header.&text=The%20size%20of%20IPv6%20header,are%20128%20bit%20binary%20numbers.&text=In%20IPv4%20header%2C%20the%20source,are%2032%20bit%20binary%20numbers.

The flow label is a new field added to IPv6 headers that was not present in IPv4 headers. It is used to identify packets that require special handling by routers, particularly for quality-of-service (QoS) purposes. Reference::

IPv6 Header Format, Juniper Networks Documentation

IPv6 Overview, Juniper Networks Documentation


by Leigha at Jul 11, 2025, 02:13 PM

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Lovetta
5 days ago
I remember practicing a question about IPv6 headers, and I think the checksum is actually removed, not added.
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Jolene
11 days ago
I think the flow label is the new field in IPv6, but I'm not completely sure.
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Whitley
16 days ago
Ah, I remember learning about this! The flow label field in IPv6 is used for identifying and handling traffic flows. I'm confident that's the right answer here.
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Johanna
21 days ago
The checksum field was removed in IPv6, so I'm guessing the answer is not B. As for the other options, I'll have to review my notes to be sure.
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Elvera
26 days ago
Hmm, I'm a bit unsure on this one. I know IPv6 has some differences from IPv4, but I can't quite remember what new fields were added. I'll have to think this through carefully.
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Goldie
1 months ago
I'm pretty sure the answer is A - flow label. IPv6 added that field to help with traffic flow management.
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Mi
3 months ago
Actually, the correct answer is A) flow label because it helps in identifying and distinguishing different flows of data.
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Frederica
3 months ago
I'm not sure, but I think it might be D) version.
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Twana
3 months ago
A) flow label, no doubt. I mean, how else are you gonna keep track of those high-speed internet packets, am I right?
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Latrice
1 months ago
D) version field indicates the version of the IP protocol being used.
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Alaine
2 months ago
C) fragment offset helps in reassembling fragmented packets at the receiving end.
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Karan
2 months ago
B) checksum is also important for error detection in the packet transmission.
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Rueben
2 months ago
A) flow label, no doubt. I mean, how else are you gonna keep track of those high-speed internet packets, am I right?
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Dean
3 months ago
Haha, I bet the answer is C) fragment offset. That's like, the most useless field in the IPv4 header, so they probably kept it in IPv6 just for laughs.
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Kristian
3 months ago
I agree with Mignon, the flow label is a new field in IPv6.
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Ettie
3 months ago
D) version, duh! That's gotta be the most important thing in an IP header, the version number.
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Maryln
1 months ago
B) checksum
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Rodolfo
2 months ago
A) flow label
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Shawana
3 months ago
Hmm, I'm going with B) checksum. I know IPv4 had a checksum, so it makes sense that IPv6 would too, right?
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Bev
3 months ago
Milly: That's right. The flow label field in IPv6 helps identify and distinguish different flows of data.
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Milly
3 months ago
User 2: Oh, I see. So the correct answer is A) flow label, which is the new field added to an IPv6 header.
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Roy
3 months ago
User 1: Actually, IPv6 does not include a checksum field like IPv4. It was removed to simplify processing.
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Simona
4 months ago
I'm pretty sure it's A) flow label. IPv6 has some cool new features, like that flow label thing.
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Lenny
2 months ago
Yeah, IPv6 added the flow label field for better traffic management.
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Marya
3 months ago
I think you're right, it's A) flow label.
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Graciela
3 months ago
Yes, IPv6 added the flow label field for improved QoS.
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Marti
3 months ago
I think you're right, it's A) flow label.
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Mignon
4 months ago
I think the answer is A) flow label.
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