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Free 4A0-M01 Exam Braindumps
Alcatel-Lucent IP/MPLS Mobile Backhaul Transport Questions 41–45 (page: 10)

Updated On: 9-Feb-2026
Page 10 of 31
PDF with 150 Questions

As cells enter an aPipe service configured for vc-type atm-vcc, how does the ingress Provider Edge (PE) router handle the cell header Virtual Path Identifier/Virtual Channel Identifier (VPI/VCI) values?

  1. The PE strips the cell headers and transports just the payload with a control word
  2. The PE replaces the VPI/VCI with the MPLS service label and control word
  3. The PE replaces the VPI/VCI with another set defined within the service context
  4. The PE transports the original VPI/VCI along with the payload to the egress PE

Answer(s): D



Click on the exhibit



Which statement correctly describes eNodeB-to-eNodeB X2 interface traffic flow in the Model 1 hub and spoke architecture Long Term Evolution (LTE) service model shown?

  1. X2 traffic travels through the red Virtual Private LAN Service (VPLS) to the Mobility Management Entity (MME) pool and on to the target CSA router
  2. The green Internet Enhanced Service (IES) provides the Layer 3 interfaces used for X2 eNodeB-to- eNodeB handoff traffic
  3. Split horizon allows direct eNodeB-eNodeB handoff without the need to route through the green IES interfaces
  4. The red VPLS supports Virtual Routing and Redundancy Protocol (VRRP) sessions for X2 inter- eNodeB Layer 3 interface resiliency

Answer(s): B



Click on the exhibit



Which statement correctly describes the Model 1 hub and spoke architecture Long Term Evolution (LTE) service model shown?

  1. The blue Internet Enhanced Service (IES) SAP interfaces include static Media Access Control (MAC) address entries for the eNodeBs
  2. The red Virtual Private LAN Service (VPLS) provides the Layer 2 transport to support blue IES Virtual Routing and Redundancy Protocol (VRRP) sessions
  3. The green IES spoke SDP interfaces include static MAC address entries for the eNodeBs
  4. The blue IES interfaces forward traffic to external networks and the mobile core

Answer(s): B



Click on the exhibit.



Given the show command results shown and the following information;
* MLS1 interface L3_VLAN402 is the preferred Virtual Router ID (VRID) 1 master interface
* The master interface failed and later recovered
Why does the MLS2 interface L3_VLAN402 remain in the Master state?

  1. You must configure a VRRP policy to control master recovery time
  2. The VRRP VRID 1 configuration disallows preempting the existing master
  3. SROS requires operator intervention to recover the VRRP master interface
  4. The Layer 2 interface carrying the VRRP announcements is operationally down

Answer(s): B



Which statement is correct concerning spoke SDP use in point-to-point services?

  1. Each service requires its own set of SDPs
  2. The spoke SDP must specify the vc-type of the service transported
  3. SDP bindings must include the service encapsulation type value
  4. An explicit endpoint may have up to four spoke SDP bindings
  5. Each service includes two default explicit endpoints

Answer(s): D



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