MEF CECP Module 10 Quiz

1. 1Which entity delivers Ethernet frames between ENNIs and UNIs/ENNIs

   1. AOperator Virtual Connection
   2. BEthernet Virtual Circuit
   3. CIntermediate Virtual Connection
   4. DOperator Virtual Circuit
   5. EEthernet Virtual Connection
2. 2Per MEF 26.1 which three values are recognized for the protection mechanism ENNI as a service attribute?

   1. ALACP
   2. BNone
   3. CLink Aggregation
   4. DE-LMI
   5. EOther
3. 3The OVC End Points of an operator virtual connection must associate to

   1. AExactly two UNIs and any number of ENNIs
   2. BExactly one ENNI and any number of UNIs
   3. CUNIs only
   4. DAt least one ENNI
   5. EOnly ENNIs
4. 4Two or more operators can

   1. AConnect through an ENNI
   2. BBe involved in an OVC
   3. CBe responsible for an EVC
   4. DBe involved in an EVC
   5. Ebe responsible for an OVC
5. 5Which three frame formats are permitted at an ENNI?

   1. AUntagged
   2. BC-Tag
   3. CS-Tag and no C-Tag
   4. DS-Tag and C-Tag
   5. EStacked S Tags
6. 6How many EPL services can an ENNI support?

   1. AOne
   2. BTwo
   3. CUp to 4094
   4. DAbout 16 million
   5. EUnlimited
7. 7Which statement about the External Network to Network interface is true?

   1. AThe subscriber and service provider agree on its exact physical location so that responsibilities are clearly defined
   2. BIt can only support one EPL service
   3. CService provider is responsible for the service from the UNI to the ENNI, and then the organization in charge of the operator CEN is responsible
   4. DIt is a physical demarcation point between two operator CENs
8. 8An OVC requires which one of the following

   1. AA UNI
   2. BTwo or more UNIs
   3. CTwo or more EVCs
   4. DAn ENNI
   5. ETwo or more ENNIs
9. 9An OVC End point map has bundling, which statement is true about the associated OVC?

   1. AS-VLAN ID preservation can be Yes or No
   2. BCE-VLAN ID Preservation can be Yes or No
   3. CCE-VLAN CoS Preservation can be Yes or No
   4. DS-VLAN ID CoS Preservation can be Yes or No
10. 10In which category of operator service attributes is Broadcast Service Frame Delivery

    1. AOVC Service Attributes
    2. BPVC End Point per ENNI Service Attributes
    3. CENNI Service Attributes
    4. DPer UNI service attributes
    5. EOVC per Per UNI service attributes

11. 11An OVC End Point Map has bundling. Which statement is not true about the associated OVC

    1. AThe OVC cannot support hairpin switching
    2. BAll end points of the OVC have bundling
    3. CS-VLAN ID preservation is set to Yes
    4. DAt least one end point of the OVC terminates at the UNI
    5. EThe OVC is point-to-point
12. 12Two operator CENs connect through an ENNI. What is the advantage of using an ENNI with Link OAM?

    1. AIt provides link protection using two physical links, one active and one standby
    2. Bit allows the ENNI to support hairpin switching
    3. CIt allows both operators to monitor and diagnose ENNI connectivity issues
    4. DIt allows two different types of physical layers to be connected at the ENNI
    5. EIt allows class of service propogation through IEE 802.1ad ethernet frames
13. 13Which OVC service attribute is incompatible with hairpin switching?

    1. ACE-VLAN CoS Preservation = Yes
    2. BS-VLAN ID Preservation = Yes
    3. CS-VLAN CoS Preservation = Yes
    4. DCE-VLAN ID Preservation = YES
14. 14Which statement is not true about the service provider in the MEF 26.1 service model?

    1. AThe service provider is responsible for the service to the subscriber
    2. BThe service provider is responsible for coordinating operators
    3. CThe service provider may or may not be an operator
    4. DTwo or more operators can collaboratively function as the service provider
15. 15The smallest maximum transmission unit size allowed for an operator virtual connection is

    1. A1522 bytes
    2. B1526 bytes
    3. C4094
    4. D4096
16. 16How many EVCs can be supported by one OVC?

    1. AExactly one
    2. BUp to 4094 if the OVC is point-to-point between two ENNIs
    3. CUp to 4094 if UNI is configured with service multiplexing = Yes
    4. DExactly one if the UNI is configured with All to one bundling = yes
17. 17Which three of the following statements are true?

    1. AAt ENNIs, drop-eligibility can be encoded in the S-Tag DEI bit or in the S-Tag PCP value
    2. BAt ENNIs all frames require C-Tags
    3. CAt an ENNI both operators are responsible for setting S-Tag values appropriately before transmitting frames across the ENNI
    4. DIngress ENNI frames are mapped to OVC end points vased on the S-VLAN ID Value
    5. EAt ENNIs, CoS may be encoded in the C-Tag or in the S-Tag
18. 18Which one of the following is not an ENNI requirement?

    1. AENNIs are required to support E-LMI
    2. BAt ENNIs, all bandwidth profiles must be color aware
    3. CENNIs must support MTU sizes at least as large as 1526 bytes
    4. DIf an ENNI includes two physical links, it must be capable of implementing link aggregation
    5. EENNIs are required to support link OAM
19. 19Which one of the following is an ENNI service attribute?

    1. ABundling
    2. BEnd Point Map
    3. CService Multiplexing
    4. DAll-to-one bundling
20. 20The End Point Map Attribute

    1. AIs inactive if the ENNI is provisioned with all-to-one bundling
    2. BSpecifies how ingress ENNI frames are assigned to OVC end points based on S-VLAN ID
    3. CLists the CE-VLAN IDs that map to the EVC
    4. DIs an OVC End Point per ENNI Service Attribute
21. 21A rooted-multipoint OVC has 5 OVC end points, 2 are designated root, 2 are designated leaf, and 1 is designated trunk. A broadcast frame ingresses at a leaf OVC end point. How many frames does the OVC deliver if the OVC attribute Broadcast Service Frame Delivery is configured to deliver unconditionally?

    1. A1
    2. B2
    3. C3
    4. D4
    5. E5
22. 22Why is the minimum MTU size requirement at ENNIs 1526 bytes four bytes larger than the minimum UNI maximum service frame size 1522

    1. ABecause ENNIs do not support all-to-one bundling
    2. BTo allow hairpin switching
    3. CTo account for the S-Tag
    4. DBecause color-aware bandwidth profiles are required at ENNIs
23. 23An EVPL service is implemented across three Operator CENs. How many UNIs, ENNIs, EVCs, and OVCs are involved?

    1. A2 UNIs, 2 ENNIs, 3 EVCs, and 1 OVC
    2. B2 UNIs, 3 ENNIs, 1 EVCs, and 3 OVC
    3. C2 UNIs, 2 ENNIs, 1 EVCs, and 3 OVC
    4. D2 UNIs, 3 ENNIs, 1 EVCs, and 2 OVC
24. 24An EPL service spans three Operator CENs and each OVC is configured with S-VLAN ID preservation = Yes. Which of the following statements is true?

    1. AThe S-Tag VLAN identifier with match at both UNIs
    2. BThe S-Tag VLAN identifier is preserved within each OVC, but can be translated at the ENNIs
    3. CThe S-Tag VLAN identifier will match at both ENNIs
    4. DThe S-Tag VLAN identifier will match at both UNIs and both ENNIs
25. 25An EP-LAN service spans two Operator CENs that connect through one ENNI. At all UNIs ingress bandwidth profiles are configured with CIR=0, CBS=0 EIR=20Mbps and EBS=2000 bytes. How should the service be configured to ensure that yellow frames are not promoted to green?

    1. AAt all OVC end points configure ingress and egress bandwidth profiles with color mode = color aware
    2. BAt those OVC end points that connect to the ENNI (not those connecting to UNIs), configure ingres and egress bandwidth profiles with Color Mode = Color aware
    3. CFor both OVCs, configure color forwarding = yes
    4. DAt those OVC end points that connect to UNIs (not those connecting to the ENNI) configure ingress bandwidth profiles with Color Mode = Color aware. Also do not configure any bandwidth profiles at the OVC end points that connect to the ENNI
26. 26Which statement about CoS identification at ENNIs is not true?

    1. ACoS is determined by S-Tag PCP bit values
    2. BAt a given OVC end point, an S-Tag PCP bit value can map to more than one CoS
    3. CFor each OVC end point, a CoS must be associated with each S-Tag PCP value
    4. DAt a given OVC end point, two different S-Tag PCP bit values can map to the same CoS
    5. EThe S-Tag supports up to eight classes of service
27. 27A service is implemented over 3 Operator CENs. Which two statements are correct?

    1. AAll three operators are responsible to the subscriber for the service
    2. BOne of the operators can be the service provider
    3. CThe subscriber has a business relationship with each operator
    4. Deach operator CEN includes at least one ENNI-N
28. 28An ENNI is to support many EVCs, including some EVCs configured with EVC Maximum Service Frame Size as large as 1800 bytes. What is the smallest value of the ENNI MTU Size that will support these EVCs?

    1. A1526
    2. B1800
    3. C1804
    4. D2000
29. 29For an Ethernet Virtual Private service that is implemented over multiple Operator CENs, which ENNI Frame fields can be used to convey color across the ENNI?

    1. AS-Tag DEI only
    2. BC-Tag PCP or S-Tag DEI only
    3. CS-Tag DEI or S-Tag PCP only
    4. DC-Tag PCP or S-Tag DEI or S-Tag PCP only

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Provessional MEF-CECP (Module Quizzes) Quiz on MEF CECP Module 10 Quiz, created by Joshua Hendrickson on 27/12/2016.

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