200-150 · Question #222
Which two addresses are valid in the data layer of the OSI reference model? (Choose two.)
The correct answer is B. 00:00:0C:5C: 5E: A2: F3 C. 34:75:10:88:5A. The OSI data link layer (Layer 2) uses MAC addresses in hexadecimal notation. IPv4 and IPv6 addresses are network layer (Layer 3) constructs and are not valid at Layer 2.
Question
Which two addresses are valid in the data layer of the OSI reference model? (Choose two.)
Options
- A
- 1.1.1
- B00:00:0C:5C: 5E: A2: F3
- C34:75:10:88:5A
- DFe80::88a1: 74f0:78748b51:1919
- E2001:0db8:85a3::8a2a:0370:7334
How the community answered
(13 responses)- B92% (12)
- D8% (1)
Why each option
The OSI data link layer (Layer 2) uses MAC addresses in hexadecimal notation. IPv4 and IPv6 addresses are network layer (Layer 3) constructs and are not valid at Layer 2.
10.1.1.1 is a dotted-decimal IPv4 address, which is a Layer 3 network layer address used for logical routing, not a Layer 2 data link layer address.
00:00:0C:5C:5E:A2:F3 uses the colon-separated hexadecimal notation that identifies MAC addresses at the OSI data link layer (Layer 2). MAC addresses are used by switches and NICs to deliver frames within a local network segment.
34:75:10:88:5A follows the hexadecimal colon-separated format used for MAC addresses, placing it at the OSI data link layer (Layer 2). Layer 2 devices use these addresses for local frame delivery without involving IP routing.
Fe80::88a1:74f0:78748b51:1919 is an IPv6 link-local address that operates at Layer 3, not at the Layer 2 data link layer.
2001:0db8:85a3::8a2a:0370:7334 is a globally routable IPv6 address and belongs to the network layer (Layer 3), not the data link layer (Layer 2).
Concept tested: OSI Layer 2 MAC address identification
Source: https://learn.microsoft.com/en-us/windows-hardware/drivers/network/osi-reference-model
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