Which First Hop Redundancy Protocol maximizes uplink utilization and minimizes the amount of configuration that is necessary?
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A. B. C. D.A.
The First Hop Redundancy Protocol (FHRP) is used to provide redundancy for the default gateway of a network. The main purpose of an FHRP is to ensure that if the primary gateway fails, the secondary gateway can take over as the default gateway without any disruption to the network.
There are three commonly used FHRPs: Hot Standby Router Protocol (HSRP), Virtual Router Redundancy Protocol (VRRP), and Gateway Load Balancing Protocol (GLBP).
Out of these three, GLBP is the FHRP that maximizes uplink utilization and minimizes the amount of configuration that is necessary.
GLBP provides load balancing between multiple gateways by assigning a virtual IP address to a group of routers acting as gateways for the same subnet. GLBP also dynamically assigns virtual MAC addresses to each of the routers in the group, which allows for more efficient use of uplinks and minimizes configuration overhead.
On the other hand, HSRP and VRRP are typically used for providing a redundant gateway with a single active gateway and multiple standby gateways. HSRP v2 and VRRP can provide load balancing but they require more configuration compared to GLBP. HSRP v1 does not support load balancing at all.
Therefore, the correct answer to this question is A. GLBP.