What is the purpose of implementing redundancy across critical network components?

• A. To avoid single points of failure and maintain service availability during hardware failures or maintenance; implemented with VRRP/HSRP, LACP, and redundant paths.
• B. To increase cost.
• C. To reduce security.
• D. To minimize backups.

Answer: (A)

Redundancy across critical network components is about keeping services available even if hardware or links fail. By removing single points of failure, networks can continue operating during hardware faults or maintenance, with automatic failover or rerouting taking effect so downtime is minimized. VRRP/HSRP provide seamless gateway failover, so if one router fails, another can take over without dropping traffic. LACP combines multiple physical links into a single logical link, increasing both capacity and resilience—if one link breaks, traffic can continue over the remaining links. Redundant paths ensure alternate routes exist, allowing traffic to be rerouted around failed links or devices.

The other options don’t align with this purpose: simply increasing cost or reducing security wouldn’t be goals of a redundancy strategy, and minimizing backups isn’t related to keeping network services available during failures.