A degree-1 node is a node that only has one direction, and it is therefore a terminal node. This means that the node only has one input and one output port. It does not have any other ports to connect to other nodes or fibers. This is a common feature of some optical transport networks, such as ring networks, where a degree-1 node serves as the endpoint of the ring.
Questions 5
WDM allows transmission systems to:
Options:
A.
Transport multiple signals transparently, onto several wavelengths, all together over one single fiber
B.
Increase the bit rate of each client signal by spreading it over multiple wavelengths
C.
Share a single signal among multiple fibers doing load balancing, and thus increasing the reliability of the optical transmission
D.
Allocate different signals to different time slots
WDM (Wavelength Division Multiplexing) allows transmission systems to transport multiple signals transparently, onto several wavelengths, all together over one single fiber. This allows for increased capacity, as many different signals can be transmitted at the same time and along the same fiber. Other advantages include improved signal integrity and reduced signal attenuation.
Questions 6
What is the purpose of the validate step in the EPT design process?
Options:
A.
During this step, the configuration available on the involved network elements is compared with the design provided byEPT.
B.
This step is used to measure optical power performances over an existing network before making changes.
C.
This step is optional and is useful to verify the network element layout before going through the commission step.
D.
During this step, the run design action is triggered for network design consistency check and errors fixing.
The validate step in the EPT design process is used to trigger the run design action, which is responsible for verifying the consistency of the network design and fixing any errors that may exist. During the validation process, the system will compare the configuration available on the involved network elements and the design provided by EPT, and any discrepancies will be flagged for further investigation or correction.
