Exam 200-301 topic 1 question 502 discussion

I can only confirm the first half of B to be true unable to find anything on how VRRP provides security. So I picked D as D is 100% how VRRP works.

If I hit this question I will go for "B" - multivendor, just keep it simlpy

D is correct answer because When the primary router in a VRRP setup fails, the backup router takes over using the same virtual IP address. Hosts on the network do not need to update their ARP caches or reconfigure their default gateway. Option B is incorrect because Although VRRP does ensure interoperability with all vendors, the primary reason for its implementation is redundancy and failover, not additional security features specific to Cisco devices.

VRRP is multivendor , provides redundancy for the default gateway , hence they use same Virtual MAC address if one random vendor Router fails the PC hosts have the same MAC virtual Address in their ARP cache so they don't need and update .

Both options B and D describe important aspects of VRRP. Option B emphasizes the interoperability aspect in a multivendor environment, while Option D focuses on the seamless failover capability of VRRP. In this context, both options could be considered correct depending on the specific requirements and priorities of the network deployment. However, given the emphasis on multivendor interoperability in the question, Option B may be the more appropriate choice. So, while both options are valid, it ultimately depends on the specific context of the network deployment. If multivendor interoperability is a key concern, Option B is more appropriate. If seamless failover without ARP cache updates is the primary consideration, Option D would be favored.

Option B, “to interoperate normally with all vendors and provide additional security features for Cisco devices,” is not the primary reason for implementing VRRP. While VRRP does allow for interoperability across different vendors, its main purpose is not to provide additional security features specifically for Cisco devices. VRRP’s primary role is to ensure high availability and redundancy for the default gateway in a network

D is correct

It´s D

Gratuitous ARP

Both HSRP and VRRP support md5 authentication, this means using VRRP doesn't add any security features. I would go with D

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp-15-mt-book/fhp-vrrp.html#:~:text=has%20become%20available.-,Authentication,uses%20the%20industry%2Dstandard%20MD5%20algorithm%20for%20improved%20reliability%20and%20security.,-Advertisement%20Protocol

B is correct as the question clearly emphasize multivendor-- the second part of the answer though ruins the answer though

Greetings team Option 'B' is the correct answer. - It provides vendor interoperability (RFC 2338), although "ALL" vendors is a bit of a stretch. - It provides additional security features for Cisco devices, including: - Object Tracking (track the state of interfaces, altering priority values accordingly. - Enhanced authentication through the support of MD5.

Answer is correct. one of the benefit of VRRP is authentication provide protection from spoofing software https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp-15-mt-book/fhp-vrrp.html

its not cisco proprietary so B more relevant, D all FHRP do that's their main reason

It is a bad question. But the keyword is multivendor, and Cisco has some extra features like VRRP Object Tracking Integration. Maybe it is not specific to a security feature, but Cisco indeed have some enhancement based on standard VRRP. For answer D: the issue is the word "member", member of router or member of the new subnet, I don't know.

chatGPT answer The correct answer is D. To enable normal operations to continue after a member failure without requiring a change in a host ARP cache. VRRP (Virtual Router Redundancy Protocol) is a standardized protocol that provides a way to create a virtual gateway IP address in a multivendor environment. It allows multiple routers to work together, sharing the same virtual IP address as the default gateway for hosts on a subnet. When a new subnet is configured in a multivendor environment, implementing VRRP provides redundancy and fault tolerance for the default gateway. If one router fails, another router within the VRRP group can take over the virtual IP address seamlessly, ensuring that hosts can still communicate without any disruption. This capability allows normal operations to continue after a member failure without requiring a change in a host ARP (Address Resolution Protocol) cache.