1+1 Optical Line Protection Hardware Constraints
Short answer
B False, because 1+1 optical line protection uses hardwired splitters and switches that prevent manual assignment of RI1/TO1 or RI2/TO2 as the working channel.
Question
Key Takeaways
The main trap is confusing 1+1 with 1:1 protection; 1+1 uses continuous transmission and automatic switching via hardware, making manual working/slave assignment invalid.
This question addresses the misconceptions surrounding 1+1 OLP configuration. Learn why manual channel selection is impossible due to the hardwired nature of optical splitters and switches.
Common mistake: Candidates often choose True because they assume all protection schemes allow administrative control over which path is primary, failing to recognize the immutable hardware design of 1+1 OLP.
Expert Analysis
The statement claims that operators can manually select RI1/TO1 or RI2/TO2 as the working channel in a 1+1 optical line protection configuration. This is incorrect because 1+1 architecture relies on hardware-level redundancy rather than software-defined selection.
In a standard 1+1 Optical Line Protection (OLP) setup, the transmission side uses an optical splitter to continuously send the same signal to both the primary and secondary paths. The receiving side employs an optical switch or selector that monitors the signal quality of both incoming lines and automatically switches to the active path if a fault occurs. Because this mechanism is governed by physical hardware components (splitters and switches), the roles of the channels are hardwired. As noted in community insights, "the optical ports are hardwired to internal splitters and switches, you cannot manually swap or flexibly assign their roles." Therefore, administrators cannot arbitrarily designate one port as 'working' via configuration; the system manages the protection switching autonomously based on signal integrity.
Exam Strategy
When analyzing protection types, distinguish between administrative configuration and hardware behavior. For 1+1 architectures, remember that 'always-on' transmission and automatic switching are key characteristics that limit manual intervention options compared to 1:1 or MSP schemes.
Frequently Asked Questions
What is the difference between 1+1 and 1:1 optical protection?
Why can't I configure a preferred working channel in 1+1 OLP?
Community Votes
100% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 1 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 1
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ethassan 👍 1 Answered BFasle. Because the optical ports are hardwired to internal splitters and switches, you cannot manually swap or flexibly assign their roles in the configuration software.
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