Click the exhibit.

Routers RR1 and RR2 are route reflectors with the same Cluster-ID. How does router RA treat the updates for prefix 192.168.1.0/27 received from routers RR1 and RR2?

• A.Router RA prefers the update received from router RR1.
• B.Router RA flags both updates as invalid.
• C.Router RA accepts both updates and flags them as used.
• D.Router RA prefers the update received from router RR2.

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What kind of attribute is the aggregator?

• A.Optional non-transitive
• B.Optional transitive
• C.Well-known discretionary
• D.Well-known mandatory

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Which of the following fields does NOT appear in the MPLS label header?

• A.Frame check sequence
• B.Time To live
• C.Label
• D.Bottom of stack bit
• E.Traffic Class (previously called Experimental)

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From the list below select the statements that describe the behavior of link state information aging. (Choose 2)

• A.The age for newly created link state information is set to 1200 for OSPF and 0 for IS-IS
• B.The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS
• C.The age is incremented or decremented only as it is held in the topological database and not as it is flooded router to router.
• D.The age is incremented or decremented as it is flooded from router to router and as it is held in the topological database.

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Which of the following statements regarding OSPF routing updates on a point-to-point link is true?

• A.On a point-to-point link, there is no need for a DR and BDR election. All routing updates are sent to the unicast address of the neighbor's interface.
• B.On a point-to-point link, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.
• C.On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network.
• D.On a point-to-point link, there is no need for a DR and BDR election; all routing updates are sent to
  224.0.0.5.

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