NEW QUESTION 1
Which two protocols can be used for VPLS signaling on a Cisco IOS XR router? {Choose two.}

• A. BGP
• B. LDP
• C. TDP
• D. RSVP
• E. PBB

Answer: AB

NEW QUESTION 2
Refer to the exhibit.

PE1 and PE2 are advertising the same subnet 10.10.10.0/24 to PE3. Which PE advertised subnet is installed at the PE3 XYZ BGP table?

• A. PE2 subnet because it has the same RD value as PE3
• B. PE2 subnet because it has the same export RT value as export RT on PE3
• C. PE1 subnet because it has the same RD value as PE3
• D. PE1 subnet because it has the same export RT value as import RT on PE3

Answer: D

NEW QUESTION 3
A service provider is tasked to write up a template for the network operations center to set up a Layer 2 VPN. Which command is the first command to issue on a Cisco IOS XR router?

• A. xconnect peer_ip vc_id encapsulation encapsulation_type
• B. connect name_pw interface_path_id dlci_value l2transport
• C. l2vpn
• D. pseudowire-class class_name

Answer: C

NEW QUESTION 4
What is an advantage of using the Cisco EVC infrastructure to implement carrier-class Ethernet services that are not available on non-EVC-capable platforms?

• A. PW redundancy
• B. interworking support
• C. PW stitching support
• D. flexible frame-matching support and VLAN tag manipulation
• E. local cross-connect support

Answer: D

Explanation: http://www.cisco.com/web/YU/events/expo_08/pdfs/Carrier_Ethernet_Marek_Moskal.pdf

NEW QUESTION 5
On Cisco IOS XR platforms using the EVC infrastructure, which command is used to enable a Layer 2 VPN subinterface?

• A. interface gi0/0/0/0.10 switchport access vlan 10
• B. interface gi0/0/0/0.10 switchport mode tunnel dot1q-tunnel
• C. interface gi0/0/0/0.10 switchport mode trunk
• D. interface gi0/0/0/0.10 bridge-group 10
• E. interface gi0/0/0/0.10 l2transport

Answer: E

Explanation:

NEW QUESTION 6
Refer the exhibit.




What type of routing is used between CE7 and PE7?

• A. OSPF
• B. BGP
• C. is-is
• D. RIPv2
• E. Static routing

Answer: E

Explanation: # show ip route

NEW QUESTION 7
Which VPN technology allows remote sites with dynamic IP addresses to connect to a central hub?

• A. static IPsec tunnels
• B. site-to-site VPN
• C. DMPVN
• D. VRFs

Answer: C

NEW QUESTION 8
When implementing VPLS on Cisco routers, which data structure resembles a virtual switch and is used for learning the MAC addresses?

• A. VRF
• B. VFI
• C. SVI
• D. BVI

Answer: B

Explanation:

NEW QUESTION 9
Which three functions are performed by the PE router in an MPLS Layer 3 VPN? {Choose three.}

• A. exchanges routing updates with the CE router
• B. translates the CE routing information into VPNv4 routes
• C. exchanges VPNv4 routes with other PE routers over MP-BGP
• D. imports and exports RTs that are received from the P routers
• E. exchanges RDs with the P routers
• F. exchanges VPN labels with the CE routers

Answer: ABC

Explanation: http://www.cisco.com/en/US/docs/routers/crs/software/crs_r4.1/lxvpn/configuration/guide/vc41v3.html How MPLS L3VPN Works
MPLS VPN functionality is enabled at the edge of an MPLS network. The PE router performs the following tasks:
•Exchanges routing updates with the CE router
•Translates the CE routing information into VPN version 4 {VPNv4} and VPN version 6 {VPNv6} routes
•Exchanges VPNv4 and VPNv6 routes with other PE routers through the Multiprotocol Border Gateway Protocol {MP- BGP}

NEW QUESTION 10
Which flavor of MPLS Layer 3 VPN has MPLS enabled on PE-CE links?

• A. basic
• B. CSC
• C. inter-AS
• D. AToM
• E. VPLS

Answer: B

Explanation: http://www.cisco.com/en/US/docs/ios/12_0st/12_0st14/feature/guide/csc.html

NEW QUESTION 11
Which two statements regarding Cisco 6PE operations are correct? {Choose two.}

• A. The top label in the label stack is assigned by MP-BGP, and it is used to reach the egress PE.
• B. The inner label in the label stack is assigned by MP-BGP, and it is used for IPv6 forwarding at the egress PE.
• C. The top label in the label stack is assigned by LDP, and it is used to reach the egress PE.
• D. The inner label in the label stack is assigned by LDP, and it is used for IPv6 forwarding at the egress PE.

Answer: BC

Explanation: http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6553/prod_presentation0900aecd80311df4.pdf

NEW QUESTION 12
Which three options are features of MPLS Layer 2 VPNs? {Choose three.}

• A. Routing occurs on customer devices.
• B. Routing occurs on service provider and customer devices.
• C. Customer sites appear to be on the same LAN.
• D. Customer sites appear to be on different LANs in the same routing domain.
• E. A routing protocol must be configured between the CE and PE device.
• F. Traffic between CE and PE is forwarded in Layer 2 format.

Answer: ACF

NEW QUESTION 13
What are the two AToM interworking modes? {Choose two.}

• A. bridged {interworking ethernet}
• B. routed {interworking ip}
• C. label-switched {interworking mpls}
• D. transparent {interworking transparent}

Answer: AB

Explanation: http://www.cisco.com/en/US/docs/ios/ios_xe/mpls/configuration/guide/mp_l2vpn_intrntwkg_xe.html
Interworking is a transforming function that is required to interconnect two heterogeneous attachment circuits {ACs}. Several types of interworking functions exist. The function that is used would depend on the type of ACs being used, the type of data being carried, and the level of functionality required. The two main Layer 2 Virtual Private Network {L2VPN} interworking functions supported in Cisco IOS XE software are bridged and routed interworking.
Layer 2 {L2} transport over multiprotocol label switching {MPLS} and IP already exists for like-to-like ACs, such as Ethernet-to-Ethernet or Point-to-Point Protocol {PPP}-to-PPP. L2VPN Interworking builds on this functionality by allowing disparate ACs to be connected. An interworking function facilitates the translation between different L2 encapsulations.

NEW QUESTION 14
Which option is the primary purpose of central service MPLS VPNs?

• A. provide customer access to provider resources while ensuring customers cannot communicate directly
• B. provide the provider access to customer resources while ensuring customers cannot communicate directly
• C. provide other service providers access to provider resources
• D. provide other service providers access to customer resources

Answer: A

NEW QUESTION 15
An engineer is configuring an EoMPLS circuit on a Cisco IOS XR router interface that removes a VLAN from the distribution layer. Which configuration accomplishes this configuration?

• A. interface GigabitEthernet 0/10.10 l2transport encapsulation dot1q 10l2vpnxconnect group 103588p2p 103588interface GigabitEthernet 2/10.10 neighbor ipv4 10.10.10.2 pw-id 103588
• B. interface GigabitEthernet 0/10.10 encapsulation dot1q 10rewrite ingress tag pop 1 symmetric l2vpnxconnect group 103588p2p 103588interface GigabitEthernet 0/10.10 neighbor ipv4 10.10.10.2 pw-id 103588
• C. interface GigabitEthernet 0/10.10 l2transport encapsulation dot1q 10rewrite ingress tag pop 1 symmetric l2vpnxconnect group 103588p2p 103588interface GigabitEthernet 0/10.10 neighbor ipv4 10.10.10.2 pw-id 103588
• D. interface GigabitEthernet 0/10.10 l2transport encapsulation dot1q 10rewrite ingress tag translate 1-to-1 dot1ad 10 symmetricl2vpnxconnect group 103588p2p 103588interface GigabitEthernet 0/10.10 neighbor ipv4 10.10.10.2 pw-id 103588

Answer: C

NEW QUESTION 16
DRAG DROP

Answer:

Explanation: Business subscribers are an important segment of many service providers' customer base. The main business services that must be provided by the network today are:
• MPLS VPN
• Carrier Ethernet connectivity
• Managed services
Carrier Ethernet connectivity services have been defined by the Metro Ethernet Forum {MEF} to include ELine, E-LAN, and E-Tree service types, which are defined as follows:
• E-Line is based on a point-to-point Ethernet Virtual Connection. Two E-Line services are defined:
- Ethernet Private Line {EPL}: A very simple and basic point-to-point service characterized by low frame delay, frame delay variation, and frame loss ratio. No service multiplexing is allowed, and other than a committed information rate {CIR} no class of service {CoS} {Bandwidth Profiling} is allowed.
- Ethernet Virtual Private Line {EVPL}: A point-to-point service wherein service multiplexing {more than one Ethernet Virtual Connection} is allowed. The individual Ethernet Virtual Circuits can be defined with a rich set of Bandwidth Profiles and Layer 2 Control Protocol Processing methods as defined by the Metro Ethernet Forum.
• E-LAN is based on a multipoint-to-multipoint Ethernet Virtual Connection. Service multiplexing {more than one Ethernet Virtual Circuit at the same UNI} is permitted, as is the rich set of performance assurances defined by the MEF such as CIR with an associated Committed Burst Size {CBS} and Excess Information Rate {EIR}.
• E-Tree is a point-to-multipoint ELAN service in which the spoke "leaves" can communicate with the hub or "root" location but not with each other. Typical application for E-Tree is in franchise operations.