Exam NSE4_FGT-6.4 topic 1 question 18 discussion

Here First SD WAN Rule check SLA Requirement. Port1,2,3 satisfied it. Then check for Lowest cost and port 2,3 has the lowest. Then check for preference and port3 is in top. So interface port3 will be selected

The right answer is Port3 Fortigate will verify first if all interface match the SLA target -> Port 4 discarded Then it will match with COST -> Port 3 and Port2 have equal cost. Then it will end up choosing the most prefered one, which is the Port3

• D. port3

Lowest Cost (SLA): dinámico según coste configurado a cada interfaz y cumplimiento del SLA establecido. Sólo se incluyen en el proceso de selección los caminos que cumplen SLA. Entre ellos (o si ninguno cumple SLA) se elige el que tenga mejor coste, o en último caso, según orden de configuración.

Correct is D

Correct is D

D, port3, é a correta! SD-WAN Role especifica Lowest Cost (SLA) que define a ordem de seleção: 1) SLA Target; 2) Interface Cost e; 3) Interface preference. A avaliação SLA target é top-down, logo o critério latência é atendido por todas as interfaces, seguido de jitter. O percentual de perda de pacotes da port4 ultrapassa 0%, logo ela é desconsidera restando apenas port1, port2 e port3. O menor custo é 5 que é da port2 e port3. A preferência de interface na SD-WAN rule é port3.

I attempted the exam today and for me, this question was changed. Instead of the lowest cost, SDWAN rule was Best Quality. And Port-4 was having packet loss, Jitter on Port3 and Port-1 was best among other. So Answer was "Port-1". Just keep in mind to read the question carefully incase question is tweeked.

D is correct: Port 3

SLA is meet on port 1,2 and 3 and there is no tie in Lowest Cost SLA setting, port1 as the lowest SLA cost.

port 3 is correct, port 4 doesn't meet SLA so it's out, port 1 has higher cost than 2 and 3, so it's out as well, we are left with preference so port 3 has higher preference, Infrastructure Study Guide page 93.

FYI - On exam I got a question with these exhibits but with a small difference in chosen option second picture, and it asked "Which port is for outgoing interface based on latency?".

PORT3 ■ SD-WAN LOWEST COST RULES - BEST SLA PARAMETERS --> LOWEST COST --> TOP INTERFACE PREFERENCE

D Highest preference

I had a similar question to this yesterday, except it was using 'Best Quality'. Also the port preference was different and. Answer was port 1. Just be sure to read the questions and make sure they are the same as what's listed here.

right answer is D: port3.

Port 3 is the correct answer to this and there is no way it can be port 1