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# Mastering Network Traffic Optimization

Created by
@VisionarySugilite

### Which formula is used to calculate the corrected metric (CM) in FortiGate?

• CM = real metric / (1 + Link-cost-threshold)
• CM = real metric / (1 + Link-cost-threshold/100) (correct)
• CM = real metric / (1 - Link-cost-threshold)
• CM = real metric / (1 - Link-cost-threshold/100)
• ### When does an LPM (lower priority member) get placed on top of an HPM (higher priority member)?

• When its metric is equal to the CM of the HPM
• When its metric is worse than the CM of the HPM
• When its metric is equal to or worse than the CM of the highest priority member
• When its metric is better than the CM of the HPM (correct)
• ### When is an LPM (lower priority member) placed below an HPM (higher priority member)?

• When the LPM metric is equal to or worse than the HPM
• When the LPM metric is equal to or worse than the CM of the highest priority member (correct)
• When the LPM metric is better than the HPM
• When the LPM metric is better than the CM of the highest priority member

### Which member does FortiGate select as the preferred member when using latency, jitter, or custom-profile-1 as the metric?

<p>The member with the lowest metric</p> Signup and view all the answers

### What does the oif list in FortiGate depend on?

<p>The member performance</p> Signup and view all the answers

### What is the purpose of the Interface Preference configuration list in FortiGate?

<p>To define the order of interfaces in the configuration</p> Signup and view all the answers

### What happens if the link-cost-threshold is set to a value higher than zero in FortiGate?

<p>FortiGate calculates the corrected metric (CM) for higher priority members</p> Signup and view all the answers

### Which metric does FortiGate use to determine the preferred member when best quality is configured as the strategy?

<p>The metric in use</p> Signup and view all the answers

### What is the formula used by FortiGate to calculate the corrected metric (CM)?

<p>CM = real metric / (1 + Link-cost-threshold/100)</p> Signup and view all the answers

### Which metric is used in the best quality member election rule described in the text?

<p>Latency</p> Signup and view all the answers

### In the first output shown in Example 1, why is T_INET_0 selected as the preferred member even though T_INET_1 has the lowest real latency?

<p>T_INET_0 has a lower corrected latency than T_INET_1.</p> Signup and view all the answers

### In the second output shown in Example 1, why does T_INET_1 become the preferred member?

<p>T_INET_1 has a lower corrected latency than T_INET_0.</p> Signup and view all the answers

### In the third output shown in Example 1, why is T_INET_1 moved back below T_INET_0?

<p>T_INET_1 has a higher corrected latency than T_INET_0.</p> Signup and view all the answers

### In the first output shown in Example 2, why is T_MPLS placed below T_INET_1 even though T_MPLS has lower latency?

<p>T_INET_1 has a lower corrected latency than T_MPLS.</p> Signup and view all the answers

### In the second output shown in Example 2, why is T_MPLS placed on top of T_INET_1?

<p>T_MPLS has a lower corrected latency than T_INET_1.</p> Signup and view all the answers

### In the third output shown in Example 2, why is T_MPLS still placed on top of T_INET_1 even though its latency is no longer lower than the corrected latency of T_INET_1?

<p>FortiGate doesn’t consider the advantage when moving a lower priority member back down the interface list.</p> Signup and view all the answers

### In the fourth output shown in Example 2, why is T_MPLS moved back below T_INET_1?

<p>T_MPLS has a higher corrected latency than T_INET_1.</p> Signup and view all the answers

### Which metric is used in the custom-profile-1 formula to calculate the link quality index?

<p>Latency</p> Signup and view all the answers

### Which metric has the highest weight in the custom-profile-1 formula?

<p>Packet loss</p> Signup and view all the answers

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