Which two frames can be configured on an Ethernet flow point? (Choose two.)

Question

Options

• Aof a specific VLAN
• Bwith different type of service values
• Cwith identical type of service value
• Dwith different class of service values
• Ewith no tags

• A
  71% (27)
• B
  3% (1)
• C
  11% (4)
• D
  16% (6)

Explanation

An Ethernet flow point classifies frames at Layer 2 based on their tagging structure - either frames belonging to a specific VLAN (tagged with a VLAN ID, option A) or untagged frames (no VLAN tag present, option E). These two states cover the fundamental Ethernet frame types that a flow point must distinguish to properly classify and forward traffic in Carrier Ethernet or similar architectures.

Options B, C, and D are wrong because Type of Service (ToS) is an IP header field (Layer 3), and Class of Service (CoS) in this context refers to 802.1p priority bits - neither is used as a defining classification criterion for an Ethernet flow point, which operates at Layer 2 based on tagging presence and VLAN identity, not QoS markings.

Memory tip: Think "Tagged or Untagged" - an Ethernet flow point only cares whether a frame carries a specific VLAN tag or no tag at all. If the answer choices mention IP-layer or QoS values (ToS, CoS), they're operating at the wrong layer for flow point classification.

No community discussion yet for this question.