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Ericsson Exam ECP-206 Topic 2 Question 23 Discussion

Actual exam question for Ericsson's ECP-206 exam
Question #: 23
Topic #: 2
[All ECP-206 Questions]

In an Ethernet frame carrying a VLAN tag, where does the VLAN tag appear?

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Suggested Answer: C

In an Ethernet frame carrying a VLAN tag, the VLAN tag appears before the type field. A VLAN tag is a 4-byte field that is inserted into an Ethernet frame to indicate the VLAN membership and priority of the frame. The VLAN tag consists of two subfields: the tag protocol identifier (TPID) and the tag control information (TCI). The TPID subfield is a 16-bit field that identifies the frame as an IEEE 802.1Q-tagged frame, with a value of 0x8100. The TCI subfield is a 16-bit field that contains the priority code point (PCP), the drop eligible indicator (DEI), and the VLAN identifier (VID). The VLAN tag appears between the source MAC address and the type fields of the original frame, shifting the type field by four bytes. The type field indicates the type of the payload, such as IP or ARP .


by Ronna at Jul 17, 2024, 06:13 PM

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Jamal
3 months ago
The VLAN tag is like a secret password for the Ethernet frame. It's gotta be before the type field, option C all the way!
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Anthony
2 months ago
I always remember it as the VLAN tag coming before the type field.
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Cassandra
2 months ago
Yeah, option C is the correct placement for the VLAN tag.
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Mayra
2 months ago
I agree, the VLAN tag is definitely before the type field.
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Karima
3 months ago
Wait, isn't the VLAN tag supposed to be invisible so the frame can pass through the firewall undetected? Just kidding, it's clearly before the type field, option C.
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Clement
3 months ago
Hmm, I think the VLAN tag is after the length field. Let me double-check my notes... Yep, option D is the correct answer.
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Alyce
3 months ago
I remember learning this in my networking class. The VLAN tag is definitely before the type field. Option C is the way to go.
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Tegan
2 months ago
Good to know, thanks for the clarification.
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Suzan
2 months ago
I remember that too, the VLAN tag is placed before the type field.
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Huey
2 months ago
Yes, it's definitely before the type field. Option C is correct.
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Launa
2 months ago
I think you're right, the VLAN tag does appear before the type field.
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Leatha
3 months ago
I remember reading that the VLAN tag is placed after the length field to ensure proper encapsulation.
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Mozell
3 months ago
Hmm, I'm not sure about that. Can you explain why you think it's after the length field?
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Leatha
4 months ago
I believe the VLAN tag appears after the length field.
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Jessenia
4 months ago
The VLAN tag appears after the type field, duh. C'mon, this is basic Ethernet frame knowledge!
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Kizzy
2 months ago
No way, it's after the length field.
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Eura
2 months ago
Yeah, it's definitely before the type field.
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Marquetta
3 months ago
The VLAN tag appears after the type field.
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Ressie
3 months ago
No, it's after the length field.
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Margo
3 months ago
Yeah, it's definitely before the type field.
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Owen
3 months ago
The VLAN tag appears after the type field.
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Alysa
4 months ago
I agree with Mozell, the VLAN tag is before the type field.
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Mozell
4 months ago
I think the VLAN tag appears before the type field.
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