Cisco Cyber Security Practice Exam

What are the options Apollo could use to add redundancy to its routers?

1. Gateway Load Balancing Protocol, Hot Standby Router Protocol, Virtual Router Redundancy Protocol

2. Packet Switching Protocol, HSRP, Circuit Switching Protocol

3. Dynamic Routing Protocol, HSRP, GLBP

4. Static Routing Protocol, GLBP, VRRP

The correct answer is: Gateway Load Balancing Protocol, Hot Standby Router Protocol, Virtual Router Redundancy Protocol

Apollo can implement redundancy in its routers using Gateway Load Balancing Protocol (GLBP), Hot Standby Router Protocol (HSRP), and Virtual Router Redundancy Protocol (VRRP). GLBP is designed to allow multiple routers to provide redundancy and load balancing, enabling better resource utilization and improved network reliability. It actively forwards packets, and if one of the routers fails, GLBP can redirect traffic to the remaining active routers without any disruption. HSRP is a Cisco proprietary protocol that establishes a virtual router, allowing for a seamless failover. In this scenario, one router is active and the others are on standby, ensuring that if the primary router goes down, traffic can still be rerouted to the secondary without noticeable downtime. VRRP is similar to HSRP and is an open standard that provides high availability by allowing a group of routers to work together. One router is elected as the master, while the others remain in a backup state. If the master fails, one of the backups takes over as the master, again maintaining network connectivity. The combination of these three protocols provides robust redundancy mechanisms, ensuring that network availability is maintained even in the event of hardware failures or maintenance. The other choices do not provide a full suite of established redundancy protocols