MEF-CLOUDCAMPUS AULA 10-11

1. 1How many service instances can Multi‐Protocol Label Switching (MPLS) support in one network?

   1. Aa. 4094
   2. Bb. 16,777,216
   3. Cc. Unlimited
   4. Dd. 16 million
2. 2Which two technologies forward traffic over an explicitly provisioned traffic engineered path (similar to Layer 1) without bridging or a control plane? (Choose two)

   1. Aa. Ethernet over PBB
   2. Bb. Ethernet over MPLS VPLS
   3. Cc. Ethernet over MPLS VPWS
   4. Dd. Ethernet over PBB‐TE
   5. Ee. Ethernet over MPLS‐TP
3. 3Which one of the following associations is incorrect?

   1. Aa. Ethernet Linear Protection Switching — ITU‐T G.8031
   2. Bb. Provider Backbone Bridging — IEEE 802.1ah
   3. Cc. Bridging — IEEE 802.1Q‐2005
   4. Dd. Ethernet Ring Protection Switching — ITU‐T G.8032
   5. Ee. PBB‐TE— IEEE 802.1Qay
   6. Ff. Provider Bridging — IEEE 802.1ag
4. 4Which two of the following statements describe an advantage of Provider Bridging compared to Bridging? (Choose two)

   1. Aa. It can support multipoint‐to‐multipoint services and MAC learning.
   2. Bb. It can coexist in the same network with PBB‐TE.
   3. Cc. It allows customer VLAN Identifiers to be separated from service provider VLAN Identifiers.
   4. Dd. It has unlimited scalability.
   5. Ee. It supports ENNIs.
5. 5Which three of the following technologies can support an EVPL service? (Choose three)

   1. Aa. PB
   2. Bb. OTN
   3. Cc. WDM
   4. Dd. MPLS VPLS
   5. Ee. SONET/SDH
   6. Ff. PBB‐TE
6. 6Which two of the following protection mechanisms use CCMs? (Choose two)

   1. Aa. RSTP (Rapid Spanning Tree Protocol)
   2. Bb. ITU‐T G.8031, Ethernet linear protection switching
   3. Cc. ITU‐T G.8032, Ethernet ring protection switching
   4. Dd. SONET UPSR protection
   5. Ee. FRR (MPLS Fast Reroute)
   6. Ff. 1:1 link aggregation, per clause 43 of IEEE 802.3
7. 7What is the advantage of MPLS‐TP compared to MPLS VPWS?

   1. Aa. It supports both EPL and EVPL services.
   2. Bb. It provides unlimited scalability.
   3. Cc. It supports multipoint‐to‐multipoint services, such as EVP‐LAN and EVP‐Tree.
   4. Dd. It supports traffic engineered paths, resulting in a highly predictable, connection‐oriented service.
8. 8Which three of the following terms are related to a network's ability to detect and recover from faults without impacting subscribers? (Choose three)

   1. Aa. VLAN awareness
   2. Bb. Resiliency
   3. Cc. Bandwidth
   4. Dd. Protection
   5. Ee. Scalability
   6. Ff. G.8031
9. 9Which three of the following technologies can support an Access EPL service? (Choose three)

   1. Aa. PBB
   2. Bb. OTN
   3. Cc. Bridging
   4. Dd. PBB‐TE
   5. Ee. PB
   6. Ff. SONET/SDH
10. 10Which two of the following technologies support MAC address learning? (Choose two)

    1. Aa. MPLS VPLS
    2. Bb. OTN
    3. Cc. PBB‐TE
    4. Dd. PBB
    5. Ee. MPLS VPWS

11. 11Which technology is also known at MAC‐in‐MAC?

    1. Aa. WDM
    2. Bb. Provider Backbone Bridging
    3. Cc. Provider Bridging
    4. Dd. PBB‐TE
    5. Ee. MPLS VPLS
12. 12Which transport technology supports the highest bandwidth per optical fiber?

    1. Aa. OTN
    2. Bb. SONET
    3. Cc. SDH
    4. Dd. WDM
13. 13Which two of the following technologies can support multipoint‐to‐multipoint Ethernet services? (Choose two)

    1. Aa. PBB‐TE
    2. Bb. SONET/SDH
    3. Cc. MPLS‐TP
    4. Dd. MPLS VPWS
    5. Ee. MPLS VPLS
    6. Ff. PBB
14. 14Which technology is also referred to as Q‐in‐Q?

    1. Aa. MPLS VPLS
    2. Bb. Provider Backbone Bridging
    3. Cc. OTN
    4. Dd. Provider Bridging
    5. Ee. PBB‐TE
15. 15Which two of the following technologies support EP‐LAN services? (Choose two)

    1. Aa. MPLS VPLS
    2. Bb. MPLS‐TP
    3. Cc. PBB‐TE
    4. Dd. SONET/SDH
    5. Ee. Provider Bridging
16. 16Provider Backbone Bridging allows a single Carrier Ethernet network to accommodate a total of how many subscribers?

    1. Aa. 4094
    2. Bb. Unlimited
    3. Cc. 16 million
    4. Dd. 16,777,216
17. 17Which two of the following technologies support multicasting? (Choose two)

    1. Aa. Provider Bridging
    2. Bb. SONET/SDH
    3. Cc. MPLS‐TP
    4. Dd. OTN over WDM
    5. Ee. MPLS VPLS
18. 18Which two of the following technologies can support EP‐LAN services? (Choose two)

    1. Aa. PBB‐TE
    2. Bb. PB
    3. Cc. MPLS VPWS
    4. Dd. MPLS‐TP
    5. Ee. MPLS VPLS
19. 19Which one of the following technologies cannot support an Access EVPL service?

    1. Aa. Bridging
    2. Bb. PBB‐TE
    3. Cc. MPLS‐TP
    4. Dd. MPLS VPWS
20. 20Why is CESoETH sometimes used in Carrier Ethernet mobile backhaul networks?

    1. Aa. To support CoS
    2. Bb. To multiplex traffic from multiple RAN base stations to the RAN network controller
    3. Cc. To support voice traffic and/or to distribute timing
    4. Dd. For performance monitoring
21. 21A mobile operator approaches a MEN (CEN) Service Provider to provide mobile backhaul service using a hub‐and‐spoke topology with a single Ethernet UNI at the hub site where the RAN Network Controller is located. Which of the following is
    most appropriate?

    1. Aa. Use one EVP‐LAN service interconnecting all RAN Base Stations.
    2. Bb. Use one EVPL service between each RAN Base Station and the RAN Network Controller.
    3. Cc. Use one EPL service between each RAN Base Station and the RAN Network Controller.
    4. Dd. Use one EVP‐Tree service with the RAN base station designated as root and the RAN network controllers designated as leaves.
22. 22A customer wants to replace a T1 private line with a Carrier Ethernet service. Which of the following bandwidth profiles is most appropriate?

    1. Aa. CIR=1.5 Mb/s, CBS=0 bytes, EIR=O, EBS=O
    2. Bb. CIR=2 Mb/s, CBS=10,000 bytes, EIR=O, EBS=O
    3. Cc. CIR=0, CBS=O bytes, EIR=2 Mb/s, EBS=10,000
    4. Dd. CIR=2 Mb/s, CBS=10,000 bytes, EIR=2 Mb/s, EBS=10,000
23. 23Which two of the following functions are required to support CESoETH? (Choose two)

    1. Aa. Link OAM (LOAM)
    2. Bb. ITU‐T G.8031 Ethernet linear protection switching
    3. Cc. Packetization and de‐packetization
    4. Dd. Synchronization
    5. Ee. Internet access
24. 24Which two of the following services can be used, in conjunction with CESoETH, in the replacement of a TDM private line service? (Choose two)

    1. Aa. EVPL
    2. Bb. EP‐Tree
    3. Cc. EP‐LAN
    4. Dd. EVP‐LAN
    5. Ee. EPL
25. 25LANs at three sites are to be interconnected. Which two of the following service scenarios can be configured to tunnel bridge protocol data units (BPDUs) so that spanning tree protocol (STP) works across the aggregation of connected LANs? (Choose two)

    1. Aa. Each site has two UNIs. Each pair of sites is interconnected by an EVPL service.
    2. Bb. Each site has one UNI. All three sites are interconnected by an EP‐LAN service.
    3. Cc. Each site has one UNI. Each pair of sites is interconnected by an EVPL service.
    4. Dd. Each site has two UNIs. Each pair of sites is interconnected by an EPL service.
    5. Ee. Each site has one UNI. All three sites are interconnected by an EVP‐LAN service.
26. 26Which two of the following clock synchronization methods transmit timing packets across the Carrier Ethernet network? (Choose two)

    1. Aa. External timing
    2. Bb. IEEE 1588v2 PTP (Precision Time Protocol)
    3. Cc. Free run timing
    4. Dd. TDM line timing
    5. Ee. SyncE (Synchronous Ethernet)
    6. Ff. IETF RFC 1305 NTP (Network Time Protocol)
27. 27A service provider wants to offer very transparent LAN connectivity, while limiting broadcast traffic. Which service solution is best?

    1. Aa. EP‐LAN service with EVC attribute Broadcast Service Frame Delivery set to Deliver Conditionally
    2. Bb. EP‐LAN service with EVC attribute Broadcast Service Frame Delivery set to Deliver Unconditionally
    3. Cc. EVP‐LAN service with EVC attribute Broadcast Service Frame Delivery set to Deliver Conditionally
    4. Dd. EVP‐LAN service with EVC
28. 28A hospital has three clinics that need to connect to it. The three clinics are independent companies that must not be allowed to share information with each other. Which of the following service solutions is most suitable to connect the hospital to the three clinics if security is the primary concern?

    1. Aa. An EVP‐LAN service
    2. Bb. EP‐LAN service
    3. Cc. An EVPL service from each clinic to a service multiplexed UNI at the hospital
    4. Dd. EP‐Tree service
29. 29Which EVC‐based Ethernet services can be used for mobile backhaul? (Choose the one best answer)

    1. Aa. EVPL or EVP‐Tree
    2. Bb. Any
    3. Cc. EP‐LAN or EP‐Tree
    4. Dd. EVP‐Tree , EVP‐LAN, or EVPL
30. 30A sporting goods retailer has two data centers and numerous stores throughout the country. Each store needs to regularly exchange inventory, sales, and payroll information with both data centers. Stores should not exchange data with each
    other. Which of the following service solutions is best? (Choose the one best answer)

    1. Aa. A single EP‐Tree service with root UNIs at the data centers and leaf UNIs at the stores
    2. Bb. A full mesh of EVPL services interconnecting all sites
    3. Cc. A single EP‐LAN service interconnecting all sites
    4. Dd. A single EVP‐LAN service interconnecting all sites
    5. Ee. One EPL service connecting the two data centers
31. 31An IP service provider wants to connect up to 100 customers through a single 1 Gb/s UNI with each customer allowed up to 10 Mb/s of bandwidth. None of the customers can be allowed to see traffic from any other customer. Which two the following
    service solutions are viable? (Choose two)

    1. Aa. One EVP‐Tree service connecting all UNIs with the IP service provider UNI designated as a Root and all other UNIs designated as leaves
    2. Bb. One EP‐LAN service between each customer and the IP service provider
    3. Cc. One EVPL service between each customer and the IP service provider
    4. Dd. One EVP‐LAN service connecting all UNIs
32. 32MEF 22.1 defines four use cases for transporting mobile backhaul traffic over Carrier Ethernet services. When is CESoE (Circuit Emulation Services over Ethernet) required?

    1. Aa. When timing is distributed over the Ethernet physical layer using synchronous Ethernet (SyncE)
    2. Bb. When the RAN CE cannot connect to the Ethernet UNI and there is no legacy network operating in parallel to deliver timing
    3. Cc. When the operator needs to support voice traffic via an existing legacy network and offload data to a Carrier Ethernet network
    4. Dd. When RAN CE can connect to the Ethernet UNI through an Ethernet interface, eliminating the need for a Generic Inter‐Working Function (GIWF)
33. 33A customer wants to replace a T1 private line service between two PBXs (private branch exchanges) with a Carrier Ethernet service. Which technology is required to carry the customer's traffic over a Carrier Ethernet Network (CEN)?

    1. Aa. Frame Relay
    2. Bb. ATM
    3. Cc. SON ET/SDH
    4. Dd. CESoE
34. 34An enterprise has a headquarters (HQ) and four branch offices. Each branch office requires access to the Internet through a firewall at HQ, but no access to each other. In addition, HQ requires connection to the Internet service provider (ISP).
    Which two of the following service arrangements supports these requirements using only one physical connection at each site? (Choose two)

    1. Aa. One EVP‐LAN service interconnecting the branch offices and HO, plus one EVPL service between HQ and ISP
    2. Bb. Four EVPL services connecting branch offices to HQ, plus one EVPL service connecting HQ with ISP
    3. Cc. One EVPL service between HQ and ISP, plus one EVP‐Tree service with HQ designated as the root and branch offices designated as leaves
    4. Dd. One EP‐Tree service with HQ and ISP designated as roots and branch offices designated as leaves
35. 35The E‐LAN service type supports which two of the following? (Choose two)

    1. Aa. Leaf UNIs
    2. Bb. G.8031 protection
    3. Cc. Multipoint‐to‐multipoint EVC
    4. Dd. MAC address learning
    5. Ee. CESoETH
36. 36A subscriber needs a single EVP‐LAN service to connect numerous sites to three applications. All three applications use a different VLAN. All other VLANs should be blocked. Which two attribute settings are required? (Choose two)

    1. Aa. Bundling = No
    2. Bb. Service Multiplexing = No
    3. Cc. CE VLAN ID Preservation = Yes
    4. Dd. Service Multiplexing = Yes
    5. Ee. Bundling = Yes
37. 37A subscriber requires an EP‐LAN service between 6 sites: 3 in Los Angeles and 3 in Miami. The LA sites are on‐net reachable by the Service Provider's network). The Miami sites are off‐net and only reachable through an Ethernet Access Provider that has no connectivity to the Service Provider. To deliver this service, the Service Provider purchases three Access EPLs from the Miami Ethernet Access Provider and one point‐to‐point OVC from an Interstate Operator. The Interstate Operator shares one ENNI with the LA Service Provider and one ENNI with the Miami Ethernet Access
    Provider. Which of the following statements is not consistent with this service scenario?

    1. Aa. Three OVC end points in the Service Provider network interconnect (through the ENNI) to a single OVC endpoint in the Interstate Operator network.
    2. Bb. The OVC in the Interstate Operator network provides hairpin switching.
    3. Cc. The OVC in the Service Provider network is multipoint‐to‐multipoint.
    4. Dd. The OVC in the Interstate Operator network uses end point map bundling.
    5. Ee. Three OVC end points in the Ethernet Access Provider network interconnect (through the ENNI) to a single OVC endpoint in the Interstate Operator network.
38. 38An Ethernet Mobile Backhaul Service provides:

    1. Aa. Connectivity between two or more mobile phone users
    2. Bb. Temporary Ethernet services through a mobile WiMAX network
    3. Cc. Connectivity between RAN base stations and RAN network controllers
    4. Dd. Radio access between cell phone users and cell tower base stations
    5. Ee. A gateway between the public mobile phone network and the Internet
39. 39What does MEF 18 contain?

    1. Aa. Tests cases for compliance of CESoETH functionality
    2. Bb. Test cases for compliance to functionality of Ethernet services at the UNI
    3. Cc. Test cases for compliance of UNI Type 2 functionality
    4. Dd. Test cases for compliance to functionality of Ethernet service traffic management
40. 40A service provider uses Carrier Ethernet as the access network technology to deliver an IP service. What functionality does Ethernet access provide for the service provider?

    1. Aa. A Layer 3 (IP) VPN
    2. Bb. A virtual private gateway to the Internet
    3. Cc. Connection to the Internet through a Layer 2 (Ethernet) firewall
    4. Dd. Layer 2 emulation of a Layer 3 (IP) access service
    5. Ee. Layer 2 connectivity to a Layer 3 service or an Internet Service Provider (ISP)
41. 41A company wants to connect two remote campuses to its corporate headquarters, extending all corporate VLANs across all three locations. Which two properties make the EP‐LAN service a good choice for this application? (Choose two)

    1. Aa. The company does not have to coordinate CE‐VLAN IDs with the service provider.
    2. Bb. The service can perform CE‐VLAN ID translation if desired.
    3. Cc. The service provider can forward frames without MAC address learning.
    4. Dd. The company can run STP across all locations if desired.
    5. Ee. The UNIs can support service multiplexing if desired.
42. 42Which two statements concerning Carrier Ethernet mobile backhaul are true? (Choose two)

    1. Aa. A mobile operator using SOAM, uses the Subscriber MEG level.
    2. Bb. If LTE technology is used, the mobile backhaul service topology must be "hub and spoke".
    3. Cc. A mobile backhaul service must support at least 2 classes of service.
    4. Dd. CoS Label H must be used for packet‐based synchronization traffic.
43. 43A mobile operator requests mobile backhaul services for a 4G LTE network that includes base stations (called eNodeBs) with Ethernet interfaces. Which of the following options would you recommend for interconnecting the eNodeBs to the Carrier Ethernet mobile backhaul service?

    1. Aa. GIWF in combination with CESoE
    2. Bb. Circuit Emulation Services over Ethernet (CESoE)
    3. Cc. Generic Inter‐Working Function (GIWF)
    4. Dd. None of the above
44. 44An enterprise needs Carrier Ethernet services that give two branch offices access to critical business applications located at corporate headquarters, but not to each other. The critical business applications use VLAN IDs 10 and 20. CE devices do not support translation of CE VLAN IDs. All other VLANs should be blocked. Both branch offices need access to both critical business applications. Which service arrangement will support this application?

    

    1. Aa. One Ethernet Virtual Private Line (EVPL) service between each branch office and the headquarters. At the headquarters CE, the EVPLs terminate on different UNIs, which are both configured to support bundling
    2. Bb. One Ethernet Virtual Private Line (EVPL) service between each branch and the headquarters. At the headquarters CE, both EVCs terminate on one UNI that is configured for service multiplexing.
    3. Cc. One Ethernet Private Tree (EP‐Tree) service with the headquarters UNI designated as the root and branch offices designated as leaves and with the root UNI configured to support bundling.
    4. Dd. One Ethernet Private Line (EPL) service between each branch and the headquarters.
45. 45Which of the following is not required for a Carrier Ethernet service that carries CESoETH?

    1. Aa. The EVC must tunnel BPDUs.
    2. Bb. Bandwidth profiles include only CIR and CBS components (no EIR or EBS components).
    3. Cc. All service frame delivery attributes should be set to "Deliver Unconditionally."
    4. Dd. The EVC is point‐to‐point.
46. 46A subscriber has 10 sites with one UNI at each site. The 10 sites are interconnected by an EVP‐LAN service that supports multiple VLANs between the sites. Each UNI also supports one EVPL service that connects the site to an Internet service
    provider (ISP). Which one of the following configuration options is not required?

    1. Aa. Configure all UNIs with Service Multiplexing set to Yes.
    2. Bb. Configure CE‐VLAN ID preservation for each EVPL service to Yes.
    3. Cc. Con figure CE‐VLAN ID preservation for the EVP‐LAN service to Yes.
    4. Dd. Configure all UNIs with Bundling set to Yes.

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