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Q73. Given the configuration shown, and the following condition: 

. The preferred route to prefix 192.0.2.1/32 failed and recovered 

. Label Distribution Protocol (LDP) is enabled on the interfaces Once the primary path recovers, how long will the router hold down the preferred route to prefix 192.0.2.1/32? 

A. 45 seconds 

B. 60 seconds 

C. 35 seconds 

D. 180 seconds 

Answer: B 


Q74. Click on the exhibit. 

Given the local Provider Edge (PE) router configuration shown and the following condition: 

. All Service Access Points (SAPs) and spoke Service Distribution Points (SDPs) are operational Which pseudowire status will the local PE router signal for the standby spoke SDP? 

A. 0x00,Pseudowire forwarding 

B. 0x01,Pseudowire not forwarding 

C. 0x20, Pseudowire forwarding Standby 

D. 0x21, Pseudowire in standby and not forwarding 

Answer: C 


Q75. Given the topology shown: 

The nodes on ring 3 are Ethernet connected via Point-to-Point links. No external timing sources are available. Which two timing techniques can be used to delivery frequency timing over these Ethernet links? (Choose two.) 

A. IEEE 1588v2/Precision Time Protocol (PTP) 

B. Time Division Multiplexing (TDM) line timing 

C. Synchronous Ethernet (SyncE) 

D. Global Positioning System (GPS) 

E. Adaptive Clock Recovery (ACR) 

Answer: A, C 


Q76. Given the local Provider Edge (PE) router show command result shown: 

The local PE originates the redundant ePipe 10 that terminates on each of two remote PE routers. Assuming both pseudowires have the same precedence value, how does the local router choose the active pseudowire? 

A. The lowest numeric peer address 

B. The lowest numeric sdp-id 

C. The lowest numeric vc-id 

D. The lowest egress label value 

Answer: B 


Q77. Each numbered item, 1, 2, 3, and 4, represents a message exchanged between an IEEE 1588v2/Precision Time Protocol (PTP) v2 master and slave. With which message does the master pass the t4 timestamp to the slave at item 4? 

A. Announce 

B. Delay_request 

C. Delay_response 

D. Pdelay_response 

Answer: C 


Q78. Which statement correctly describes the IEEE 1588v2 two-way synchronization operating mode? 

A. The slave nodes send Follow_up messages after each Sync message 

B. The slave sets its clock offset based on a pair of received Sync messages 

C. The slave uses two sets oftimestamps to calculate its clock offset 

D. The slave verifies the Sync messages with associated Follow_up messages 

Answer: C 


Q79. Which condition would cause the bundle Oper Status: shown? 

A. The bundle local and remote peer endpoint discriminators are mismatched 

B. The bundle remote peer Layer 3 (L3) interface is down 

C. The local and remote bundle MRRU values are mismatched 

D. The ML-PPP bundle member links have dropped below the minimum threshold 

Answer: B 


Q80. Which is a characteristic of the IEEE 802.3 Slow Protocol? 

A. There are a maximum of 10 frames transmitted per second 

B. There are a maximum of 20 slow protocol subtypes per interface 

C. The maximum slow protocol frame size is 64 bytes 

D. The slow protocol header carries the clock quality level 

Answer: A