Match each Ethernet OAM protocol to its function.
Drag a concept onto its matching description — or click a concept then click the description.
Connectivity Fault Management for end-to-end Ethernet OAM
Performance monitoring including delay and loss measurement
Ethernet in the First Mile OAM for link-level monitoring
Link Aggregation Control Protocol for bundling links
Link Layer Discovery Protocol for neighbor discovery
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
CFM: Fault management and connectivity verification at the Ethernet layer
These are Ethernet OAM and management protocols used in service provider access.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
CFM: Fault management and connectivity verification at the Ethernet layer
Why this is correct
Connectivity Fault Management (CFM) is designed for fault detection and isolation in Ethernet networks.
EFM: OAM for subscriber access links (e.g., copper/fiber)
Why this is correct
Ethernet in the First Mile (EFM) provides OAM functions for access links between customer and provider.
Y.1731: Performance monitoring (delay, loss measurement) and OAM functions
Why this is correct
Y.1731 defines performance monitoring capabilities like frame delay and loss measurements.
CFM: Performance monitoring and measurement
Why it's wrong here
Incorrect — performance monitoring is the role of Y.1731, not CFM.
EFM: Fault management across provider networks
Why it's wrong here
Incorrect — fault management across provider networks is a function of CFM, not EFM.
Go deeper
About these practice questions
This 350-501 question is part of Courseiva's 971-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-501 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-501 exam.