ネットワーク管理者はネットワーク上に冗長ルーターを必要としますが、ワークステーション上に構成できるデフォルト ゲートウェイは 1 つだけです。単一の IP アドレスを持つ冗長ルーターが許可されるのは次のうちどれですか?
正解:B
Virtual Router Redundancy Protocol (VRRP) is a protocol that allows for redundant routers on the network with a single IP address. VRRP works by creating a virtual router that consists of one master router and one or more backup routers. The virtual router has its own IP address and MAC address that are shared among the routers in the group. The master router responds to traffic sent to the virtual router's IP address, while the backup routers monitor the master router's status. If the master router fails, one of the backup routers takes over as the new master router and continues to respond to traffic. This way, VRRP provides high availability and fault tolerance for the network. Reference: https://www.comptia.org/training/books/network-n10-008-study-guide (page 230)