What is the purpose of using First Hop Redundancy Protocol on a specific subnet?
What is the purpose of using First Hop Redundancy Protocol on a specific subnet?
The purpose of using First Hop Redundancy Protocol (FHRP) on a specific subnet is to provide redundancy for the default gateway. FHRP allows multiple routers to share a virtual IP address, which acts as the default gateway for the hosts on the network. If the primary router fails, another router in the group can take over using the same virtual IP address, ensuring continuous network connectivity without the need for hosts to change their default gateway settings. This setup is crucial for maintaining network reliability and minimizing downtime in case of router failure.
I have no idea what is the benefit of twisting words to come up with complicated question, which will not serve in real life. The purpose of FHRP is to provide redundancy for the gateway. PERIOD! Anyway, I'm going with option A.
Just in case an enduser finds themselves in your switches, calls in and asks you dumb questions they know nothing about, which will eventually achieve nothing. haha
Well, among the answers, A is the least incorrect, as I don't think that forwarding multicast hello messages between routers is the PURPOSE of using a First Hop Redundancy Protocol. The other answers refer to other protocols: Answer B refers to a DHCP server Answer C refers to STP Answer D refers to ACL
B doesn't refer to DHCP. DHCP is responsible for providing IP addresses dynamically to hosts.
it does! cause along with ip adresses it provides also subnet masks, default gateways and even DNS servers
FHRP forwards "Hello Messages" and "Hold Time Messages" between routers. Hello Message : "Active Router" sends "Hello Message" every x second to "Standby Router" to verify if it is there or down. Hold time : Standby router Wait for "Hello Message" from the "Active Router", if it does not arrive, the "Standby Router" will become "Active Router". HSRP (cisco protocol) Hello Message : every 3 sec Hold Time : waiting 10 sec VRRP (open standard protocol) Hello Message : every 1 sec Hold Time : waiting 3 sec
so the correct answer is A
100% A I thought it was more or too ospf related BUT With HSRP, there are three types of multicast messages sent between the devices: Hello Resign Coup https://study-ccna.com/cisco-hsrp-explained/ B.Default route? Routers can haven them and share them with other routers. = wrong If it would say default gateway the only thing (we learned) that can send that is a DHCP server. = wrong C.STP = wrong D.ACL = wrong
I would go with A
It's a terrible question, but I am going with B. Why? 1. A isn't a "purpose", it's a feature. 2. FHRP's don't "forward" multicast hello messages, they simply send them to each other within the subnet. 3. B is more in line with the idea of a "purpose", i.e. *why* you would use a FHRP, and with some interpretation isn't entirely wrong. When one router fails, gratuitous ARP is used to update the MAC address, thereby changing the "route" packets take out of the network by updating the CAM table on the switch. The whole question is 100% BS but B takes it IMO.
Has to be A for me FHRPs use multicast hello messages to maintain communication and detect failures. These protocols ensure seamless failover when the primary router is unavailable Why its NOT B First Hop Redundancy Protocols (FHRPs), such as HSRP (Hot Standby Router Protocol) and VRRP (Virtual Router Redundancy Protocol), do not directly send a default route to hosts. FHRPs provide redundancy for the default gateway (router) in a network. The virtual IP address (shared by FHRP routers) serves as the default gateway for hosts. Hosts are configured with this virtual IP address as their default route.
Some of these quetions by Cisco are really poor. The purpose of FHRP is simply for redundancy. I picked A but It was a lucky guess between that and B if im honest!
A is correct. FHRPs do not forward the default gateway to hosts.
on other sites!
Poorly worded question but HSRP sends hello packets between each other to ensure that the routers are up but this is not the reason for HSRP
FHRPs, such as HSRP (Hot Standby Router Protocol) and VRRP (Virtual Router Redundancy Protocol), ensure that hosts have a consistent default gateway even if one of the routers fails. This redundancy helps maintain network connectivity without causing loops.
The purpose of using a First Hop Redundancy Protocol (FHRP) on a specific subnet is to provide redundancy for the default gateway (router) on that subnet. This ensures that if the primary router fails, another router in the network can seamlessly take over the routing responsibilities, minimizing downtime and ensuring continuous network connectivity for the hosts on the subnet.
it´s A This is how FHRPs Work, a virtual IP address is commonly shared between the default router and the backup router. All the PCs present in the network can be configured to use that virtual IP address to use as their default gateway instead of the actual IP address of the default router. This has to be discussed by the two routers. They do so by sending multi-cast “Hello” messages to each other. The roles that these two routers discuss are: One of the routers becomes the active router, the other router becomes the standby router. Therefore, the active router will act as the default gateway for the traffic in a subnet. This means that the stanby router will not function until the active fails.
A is the answer , but why someone would call it a "purpose" ? Only for you to fail..... The only purpose of FHRP is in the name : provide one hop redundancy , isn't it ?
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Answer is B a stable routing.