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Q49. Which statement correctly describes a Point-to-Point (PPP) Multilink Protocol (MP) frame characteristic? 

A. The MP frame header carries the Layer 3 payload fragment offset value 

B. The CLS field identifies the frame's Differentiated Services Code Point (DSCP) value 

C. Only the first fragment in a sequence carries the Layer 3 payload header 

D. The frame's B and E bits indicate payload discard eligibility 

Answer: C 


Q50. Given the diagram shown: 

Which statement correctly describes how the Switching Provider Edge (S-PE) handles Targeted Label Distribution Protocol (T-LDP} messages sent on behalf of the ePipe 1 service? 

A. As soon as the S-PE receives a label from the downstream T-PE it returns its own label to the source 

B. The S-PE appends to T-PE Forwarding Equivalence  Class (FEC)messages  a pseudowire switching Type-Length-Value (TLV) 

C. The S-PE replaces the T-PE signaled FEC with its own System ID before relaying messages upstream to CSA1 

D. The S-PE adds a label to the stack to indicate to the upstream T-PE that it is an S- PE 

Answer: B 


Q51. Which statement correctly describes bi-directional Automatic Protection Switching (APS) as implemented in SROS? 

A. The endpoints transmit the same data on the working and protect circuits 

B. The endpoints send K2 keepalive bits on the working and protect circuits 

C. A failure on the receive path causes both paths to switch to the protect circuit 

D. Either the working or protection circuit can signal an APS switch 

Answer: C 


Q52. Click on the exhibit. 

Given the topology shown: 

Which timing solution would deliver time of day information to the NodeB connected 

lo the ATM/IMA link labeled 4 in the diagram? 

A. TDM Line Timing 

B. Adaptive clock recovery (ACR) 

C. Synchronous Ethernet 

D. Global Positioning System (GPS) 

Answer: D 


Q53. Given the diagram shown, and the following information: 

. Configured on CSA1 and the two MLS routers is redundant ePipe 10 

. Interchassis Backup Pseudowires (ICB-PW) provide a path of last resort to the Customer Edge (CE) Service Access Points (SAPs) 

. A Multichassis Link Aggregation Group (MC-LAG) protects the CE access ports 

. The primary spoke Service Distribution Point (SDP) has failed 

How does the ePipe service ensure that traffic continues flowing to the CE devices? 

A. CSA1 moves traffic to the secondary spoke SDP, where it crosses to endpoint SAP and travels through ICB PW spoke 3:100toMLS1 

B. CSA1 moves traffic to the secondary spoke SDP and the MLS1 MC-LAG control protocol switches the active LAG member to MLS2 

C. CSA1 moves traffic to the secondary spoke SDP, where it enters endpoint SPOKE and travels through ICB PW spoke 3:10toMLS1 

D. CSA1 moves traffic to the secondary spoke SDP, where MLS2 drops the traffic on ingress since the configuration shown is incorrect 

Answer: A 


Q54. Click on the exhibit. 

Given the topology shown: 

With Border Gateway Protocol (BGP) peer tracking enabled, what will router MLS1 do if the Interior Gateway Protocol (IGP) removes the route to its BGP peer MLS2 system ID? 

A. Itwill lookforan alternate route reflection peer 

B. It will shut down BGP route reflection 

C. It will set its peering session state to connect 

D. It will try to peer with one of the POC3 routers 

Answer: C 


Q55. Click on the exhibit Given the diagram and the following information: 

. Virtual Private Routed Network (VPRN) 5 spans the routers Point of Concentration 

(POC) 3-1 and 3-2 and the Multilevel Switch (MLS) routers MLS1 and MLS2 

. Multiprotocol Border Gateway Protocol (MP-BGP) is configured and operational 

. Pseudowire status is signaled, as shown, on the ePipe/VPRN  spoke Service Distribution Paths (SDPs) 

Which statement correctly describes the illustrated services' normal operations? 

A. A failure on the POC3-1 VPRN interface 'to NodeB" will cause a pseudowire switch on the CSA router 

B. A failure on the POC3-2 VPRN interface 'to NodeB" will cause a pseudowire switch on the CSA router 

C. The CSA router sends traffic down both spoke SDPs 1:50 and 2:50 simultaneously 

D. Both POC3-1 and POC3-2 VPRN interfaces "to NodeB" simultaneously forward traffic to the CSA router 

Answer: A 


Q56. A Synchronization Ethernet (SyncE)/Synchronization Status Message (SSM)-capable node is configured to support the ITU-T G.781 SDH mode. Which SSM code indicates that the node has gone into holdover? 

A. GL-DNU 

B. QL-EEC1 

C. QL-SSU-A 

D. QL-PRC 

Answer: B