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Question :-

A Tier 2 ISP network provides Internet connectivity to residential and business customers. The Tier 2 ISP uses Internet transit service from Tier 1 ISPs at different locations. Lately, the link utilization on a few core links of the Tier 2 ISP has increased to unacceptable levels, while a significant part of the core network has low utilization. Which two of the following methods should be used to alleviate this problem without deploying additional links? (Choose two.)
Change the IGP cost metrics in the core.
Use the BGP MED attribute to influence how Internet traffic exits the network to the Tier 1 ISPs.
Use the BGP local preference to influence how Internet traffic exits the network to the Tier 1 ISP.
Use QoS to rate-limit traffic.
Use the BGP AS prepend to influence how Internet traffic enters the network from the Tier 1 ISPs

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