Exam 350-401 topic 1 question 174 discussion

Given answer is correct (You don't use a subnet mask in vrrp)

The given answer is correct VRRP preemption is enable buy default, that why the command doesn’t need preempt https://community.cisco.com/t5/switching/vrrp-the-preempt-is-enabled-by-default/td-p/2776994

C is correct

Preempt is enabled by default in VRRP. However, default priority in VRRP is 100. Setting the priority of 100 will not matter, anything higher than 100 assuming the rest of the participating group members are default, will take priority. C is really the only possible answer. A and B are for HSRP and D tracking is really for layering VRRP inside an SD-WAN VPN or SIG.

Though it is true that VRRP default priority is 100, question states WHEN the router has the highest priority. We don't know what the priority is of the other router. For all we know the other router may have a track or has priority set lower than 100 which would make this router have the highest priority. So answer C is viable since preempt is default, even if setting priority to 100 is redundant. The other answers are flat out wrong because either are for HSRP, or bad syntax.

Given answer is correct

! interface Ethernet0/0 ip address 172.16.113.2 255.255.255.0 vrrp 5 ip 172.16.113.254 ! cisco(config-if)#do s vrrp Ethernet0/0 - Group 5 State is Master Virtual IP address is 172.16.113.254 Virtual MAC address is 0000.5e00.0105 Advertisement interval is 1.000 sec Preemption enabled Priority is 100 Master Router is 172.16.113.2 (local), priority is 100 Master Advertisement interval is 1.000 sec Master Down interval is 3.609 sec cisco(config-if)#

Virtual Router Redundancy Protocol (VRRP) Ans"A and B"->Standby command is used in HSRP configuration. preemption is already enable by default and no needed in VRRP Ans"D" subnet mask is no needed to configure in Virtual IP address (So Ans "D" is wrong) Ans"C" is more suitable. But it is not sure if the router will become Master or not. Because the priority was stetted as the default value 100. To become Master or not is also depends on another Router's configuration.

I think the question is not accurate, Review Q#162 and make a comparison

Options ate bit strange. A & B definitely wrong. VRRP states are: master and backup and not active and standby. In D preempt is enabled, but its default for VVRP. Only C is left as the correct one...

C is only relevant answer here

Ref: Implementing VRRP – Cisco “… VRRP Router Priority … Priority also determines if a VRRP router functions as a backup virtual router and determines the order of ascendancy to becoming a master virtual router if the master virtual router fails. You can configure the priority of each backup virtual router with a value of 1 through 254, using the vrrp priority command. …” A. standby 5 ip 172.16.13.254 standby 5 priority 100 standby 5 track 1 decrement 10 Wrong answer. B. standby 5 ip 172.16.13.254 standby 5 priority 100 standby 5 preempt Wrong answer. C. vrrp 5 ip 172.16.13.254 vrrp 5 priority 100 Correct answer. D. vrrp 5 ip 172.16.13.254 255.255.255.0 vrrp 5 track 1 decrement 10 vrrp 5 preempt Correct answer.

The Answer is C because Preemption is enable by default and they don't use subnet mask in VRRP

It’s ok to set the priority to 100 which is default. There is nothing wrong with that

Isn't C incomplete command since it's missing mask? Why would you set priority 100 when that's default?

The question is incomplete.

Answer B refers to HSRP and the question is requiring VRRP. A and B are not correct answers.