Otn Quiz
The questions are requirering high level understanding of OTN technology and also high level understanding of the main concept of OTN and MPLS-TP in our tool.
- 1.
Considering the routing hierarchy of an ODUflex which are the ODU types it can be routed based on our tool's functional specification:
- A.
ODU1, ODU2, ODU3, ODU4
- B.
ODU2, ODU3, ODU4
- C.
ODU2, ODU2e, ODU3, ODU4
Correct Answer
A. ODU1, ODU2, ODU3, ODU4 -
- 2.
What is OTN bundle network in NPS10 model?
- A.
Contains bidirectional links , each link corresponding to one bidirectional OTN instance
- B.
Contains links which can contain several instances of the same type (e.g: all instances are ODU1 only)
- C.
Contains links which can contain different type of instances (e.g: mix of ODU1, ODU2 etc…)
Correct Answer
B. Contains links which can contain several instances of the same type (e.g: all instances are ODU1 only) -
- 3.
What is the difference between single stage and multistage multiplexing?
- A.
Single stage multiplexing means that it is not possible to map one LO ODUk to an OTUk directly, only in case of multi-stage multiplexing
- B.
Single stage multiplexing means that HO ODU’s can be mapped only to the same type of OTUk, but multi-stage multiplexing allows that one HO ODUj is still mapped to another HO ODUk before mapping it to OTU
- C.
Multistage multiplexing means that one LO ODUj can be routed through on a path consisting of a sequence of different type of HO ODUs.
Correct Answer
B. Single stage multiplexing means that HO ODU’s can be mapped only to the same type of OTUk, but multi-stage multiplexing allows that one HO ODUj is still mapped to another HO ODUk before mapping it to OTU -
- 4.
Select the valid answer(s) for the question: which are the links the 3R regenerator terminates?
- A.
3R regenerator terminates all the ODUk links, OTU and Och
- B.
3R regeneration doesn’t touch the ODUk information but terminates the OTUk and Och
- C.
3R regeneration doesn’t touch the ODUk, and OTUk, but terminates the Och
Correct Answer
B. 3R regeneration doesn’t touch the ODUk information but terminates the OTUk and Och -
- 5.
On which layer in our tool concept an ONN node with 3R regenerator should appear?
- A.
Only lightpath and layers below
- B.
On OTN and layers below
- C.
Only Optical and layers below
Correct Answer
A. Only lightpath and layers below -
- 6.
Which physical equipments can terminate OTN client services.
- A.
ONN cannot terminate it, only the ODU-XC as only ODU-XC has client cards which terminate OTN’s
- B.
ONN only as only ONN has Muxponder and Transponder cards
- C.
Both ODU-XC and ONN. In the ODU-XC equipment they areterminated by the client cards but in the ONN equipment by Muxponder, Transponder cards
Correct Answer
C. Both ODU-XC and ONN. In the ODU-XC equipment they areterminated by the client cards but in the ONN equipment by Muxponder, Transponder cards -
- 7.
On what level SRLGs are collected in 6.9.x version of our tool?
- A.
SRLGs are collected using the routes of ODU link bundles to TE links
- B.
SRLGs are collected using the routes of ODU link bundles down to conduit level
- C.
-It can be configured on GUI on which level SRLGs are collected
Correct Answer
B. SRLGs are collected using the routes of ODU link bundles down to conduit level -
- 8.
In which case a demand is considered dual homed in our tool?
- A.
If it starts or ends in a client node
- B.
If it starts and ends in a client node
- C.
If one end is in a client node and the other in any node
Correct Answer(s)
A. If it starts or ends in a client node
C. If one end is in a client node and the other in any node -
- 9.
Which are valid statements for mapping an MPLS-TP demand to an ODUk component link?
- A.
If the ODUk component link carries both MPLS-TP and ODU demands than MPLS-TP demand first must be mapped mapped to an ODUflex and then ODUflex can be mapped to the ODUk frame
- B.
An MPLS-TP traffic can be directly mapped to an ODUk frame (without ODUflex) if the ODUk component link carries only MPLS-TP demands (a no any ODU demand)
- C.
The MPLS-TP demand is always mapped to an ODUflex which is first mapped to a LO ODUj and then to a HO ODUk
Correct Answer(s)
A. If the ODUk component link carries both MPLS-TP and ODU demands than MPLS-TP demand first must be mapped mapped to an ODUflex and then ODUflex can be mapped to the ODUk frame
B. An MPLS-TP traffic can be directly mapped to an ODUk frame (without ODUflex) if the ODUk component link carries only MPLS-TP demands (a no any ODU demand) -
- 10.
What the resource-reuse feature of GMPLS-CP means?
- A.
It means that one connection can re-use the resources of another connection if they are disjoint
- B.
It means that when a new LSP is created for a connection, then it can reuse the resource(s) of another LSP of the same connection, which has already broken due to a failure
Correct Answer
B. It means that when a new LSP is created for a connection, then it can reuse the resource(s) of another LSP of the same connection, which has already broken due to a failure -
- 11.
What means from dimensioning point of view if a protection service is revertive?
- A.
A revertive service is reverted back to the original working and protecting LSPs after the failed network components has been repaired
- B.
Revertive service means extra resources because the resources of the initial working and protecting LSPs cannot be released after failure
- C.
A revertive service means that the reserved resources are always freed when a failure happens
Correct Answer(s)
A. A revertive service is reverted back to the original working and protecting LSPs after the failed network components has been repaired
B. Revertive service means extra resources because the resources of the initial working and protecting LSPs cannot be released after failure -
- 12.
What is the difference from dimensioning point of view between 1:1 and 1+1
- A.
Nothing, in both cases both working and protection path needs to be dimensioned similarily
- B.
In 1:1 only the route of the protection path is calculated but it is not dimensioned adding the load of each protecting path
- C.
In 1+1 the protection path is always dedicated to one connection but in 1:1 only one protecting path is reserved for more connections
Correct Answer
A. Nothing, in both cases both working and protection path needs to be dimensioned similarily -
- 13.
What is the transport stack in case of MPLS-TP over ETH over DWDM? (select one you think best fits)
- A.
Client traffic/PW/transport LSP/ODUflex/ETH/Lightpath/OMS/Fiber
- B.
Client traffic/PW/transport LSP/ODU link/ETH/Lightpath/OMS/Fiber
- C.
Client traffic/PW/transport LSP/ETH/Lightpath/OMS/Fiber
Correct Answer
C. Client traffic/PW/transport LSP/ETH/Lightpath/OMS/Fiber -
- 14.
What the GFP protocol to be used for in case of MPLS-TP use cases
- A.
To map MPLS-TP demand to ODUflex
- B.
To map ODUflex to ETH
- C.
To map ETH to Lightpaths
Correct Answer
A. To map MPLS-TP demand to ODUflex -
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 21, 2022Quiz Edited by
ProProfs Editorial Team -
Nov 20, 2011Quiz Created by
Esandor
Back to top