Fortinet FCSS_SDW_AR-7.4  FCSS – SD-WAN 7.4 Architect  Exam  Dumps and Practice Test Questions Set 1  Q 1 – 20 

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Question 1

A network administrator wants to implement SD-WAN in a branch office with two Internet links: one high-speed fiber connection and one low-cost DSL backup. Which SD-WAN strategy ensures minimal packet loss and optimal application performance?

A) Enable load balancing across both links equally
B) Configure performance SLAs and priority-based routing
C) Use the DSL link for all VoIP traffic exclusively
D) Manually switch all traffic to the fiber link when congestion occurs

Answer: B

Explanation

A) Enabling load balancing across both links equally might seem reasonable, but it fails to consider the quality or performance of each link. Equal distribution can send latency-sensitive traffic such as VoIP or video conferencing over slower or congested links, causing packet loss and poor user experience. While this approach might work for non-critical traffic, it is not suitable for applications requiring consistent performance.

B) Configuring performance SLAs and priority-based routing is the correct approach. SD-WAN continuously monitors latency, jitter, and packet loss for each link. By setting SLAs for critical applications and prioritizing traffic accordingly, SD-WAN ensures the best-performing path is selected automatically. This guarantees that VoIP calls, video conferences, or other latency-sensitive traffic maintain high performance, while lower-priority traffic can use backup or lower-quality links. Dynamic routing based on real-time performance is central to Fortinet SD-WAN architecture, providing reliability, efficiency, and minimal manual intervention.

C) Using the DSL link exclusively for VoIP traffic is counterproductive. DSL typically has higher latency and variable bandwidth. Sending critical VoIP traffic over such a link can increase jitter, cause packet loss, and lead to poor call quality. Segregating traffic based on type without considering link quality undermines the advantages of SD-WAN.

D) Manually switching all traffic to the fiber link when congestion occurs is inefficient and reactive. It introduces delays, human error, and potential downtime. SD-WAN’s dynamic path selection automatically adjusts to network conditions, removing the need for manual intervention and ensuring consistent performance.

The reasoning for choosing performance SLA-based routing is that it leverages SD-WAN’s core ability to continuously evaluate each link and make intelligent traffic decisions. This approach maximizes application performance, maintains connectivity during failures, and optimizes bandwidth usage, unlike static routing, manual switching, or indiscriminate load balancing.

Question 2

Which Fortinet SD-WAN feature allows automatic selection of the best path based on real-time network conditions?

A) Static route configuration
B) Performance-based routing (PBR)
C) Policy-based NAT
D) Interface failover

Answer: B

Explanation

A) Static route configuration uses predefined paths that do not adapt to changing network conditions. While simple, it cannot monitor latency, jitter, or packet loss and cannot dynamically choose the best link. It is inflexible and unsuitable for SD-WAN’s adaptive requirements.

B) Performance-based routing is the correct choice. It continuously evaluates link performance and automatically routes traffic along the optimal path. Metrics such as latency, packet loss, and jitter determine path selection. Critical applications are prioritized over high-quality links, while non-critical traffic can use less reliable paths. This automation ensures maximum performance, reliability, and user experience without manual intervention.

C) Policy-based NAT translates IP addresses according to rules. While essential for connectivity and security, it does not select paths or improve application performance. It has no impact on real-time path selection.

D) Interface failover switches traffic to a backup interface if the primary link fails. While important for redundancy, it is reactive and does not optimize routing based on real-time performance metrics. Failover ensures continuity but does not guarantee optimal application performance under normal operating conditions.

Performance-based routing is fundamental to SD-WAN because it dynamically adapts traffic flow to link quality. Unlike static routing, NAT, or simple failover, it provides proactive optimization, minimizes packet loss, and ensures critical applications maintain high performance.

Question 3

A company’s branch office has three Internet connections: MPLS, broadband, and LTE. The network team wants to ensure VoIP calls are never dropped and file downloads use the least expensive link. Which Fortinet SD-WAN approach best achieves this?

A) Route all traffic equally across all links
B) Configure application-based SLA routing with priorities
C) Use MPLS exclusively for all traffic
D) Manually switch traffic between links during peak usage

Answer: B

Explanation

A) Routing all traffic equally disregards the varying performance and cost of each link. Critical applications may suffer packet loss or latency, and expensive links may be used unnecessarily. This approach does not align with SD-WAN principles, which emphasize performance-aware routing.

B) Application-based SLA routing with priorities is correct. SD-WAN can assign SLAs to different applications, dynamically routing critical traffic such as VoIP over reliable MPLS or high-quality broadband links, while directing non-critical traffic like file downloads over cost-effective options like LTE. This ensures high performance for essential applications and cost efficiency for less critical workloads. Dynamic adjustment based on link conditions guarantees reliability and optimal resource usage, embodying Fortinet SD-WAN’s design principles.

C) Using MPLS exclusively ensures performance but is cost-inefficient. Non-critical traffic would unnecessarily consume expensive MPLS bandwidth. SD-WAN allows intelligent routing across multiple links, which is preferable to single-link reliance.

D) Manually switching traffic is reactive and error-prone. It cannot respond in real time to fluctuating network conditions. SD-WAN automation is designed to prevent performance degradation without human intervention, offering superior reliability and efficiency.

The reasoning for application-based SLA routing is that it balances cost, performance, and reliability. Critical traffic is prioritized over high-quality links, while less critical traffic uses cheaper links, ensuring optimal network utilization and consistent user experience.

 

Question 4

Which Fortinet SD-WAN feature improves WAN efficiency by compressing data and reducing bandwidth usage?

A) Traffic shaping
B) WAN optimization
C) Policy-based routing
D) NAT

Answer: B

Explanation

A) Traffic shaping controls bandwidth usage by prioritizing or limiting traffic rates. It helps manage congestion but does not reduce the actual data transmitted or improve link efficiency through compression or caching.

B) WAN optimization is correct. It improves WAN efficiency by compressing data, deduplicating repeated transmissions, caching frequently accessed content, and optimizing TCP/UDP sessions. This reduces bandwidth usage, accelerates application performance, and improves user experience, especially over constrained or high-latency links. WAN optimization is a key component of Fortinet SD-WAN for maximizing the value of existing WAN infrastructure.

C) Policy-based routing directs traffic based on rules such as source, destination, or application type. While useful for traffic control and prioritization, it does not compress or reduce bandwidth usage, making it ineffective for improving WAN efficiency at the data level.

D) NAT translates IP addresses for connectivity purposes. It ensures traffic can traverse different networks but does not impact bandwidth usage or application performance. Its role is limited to address translation, not optimization.

WAN optimization directly addresses efficiency, ensuring critical applications receive prioritized and accelerated delivery while reducing bandwidth requirements. Other options either control traffic flow or provide connectivity without enhancing performance or bandwidth efficiency.

Question 5

A Fortinet SD-WAN administrator notices that a critical application frequently experiences packet loss despite multiple WAN links. Which approach will most effectively resolve the issue?

A) Configure automatic SLA-based path selection
B) Increase the bandwidth of all WAN links equally
C) Disable SD-WAN and use static routes
D) Enable NAT for the application traffic

Answer: A

Explanation

A) Automatic SLA-based path selection is the correct approach. By monitoring latency, jitter, and packet loss on all links, SD-WAN dynamically routes traffic over the most reliable path. This ensures critical applications maintain consistent performance and avoids packet loss without manual intervention. Performance SLA monitoring and routing automation are core SD-WAN features, addressing real-time network issues proactively.

B) Increasing bandwidth may provide more capacity but does not address packet loss caused by latency, jitter, or unreliable links. Without intelligent routing, packet loss could persist despite higher capacity. This solution is expensive and less effective than automated path selection.

C) Disabling SD-WAN and using static routes removes dynamic path selection. Static routes cannot adapt to network conditions, making the application prone to packet loss whenever a primary link degrades. SD-WAN’s dynamic intelligence is specifically designed to prevent these issues.

D) Enabling NAT changes IP addresses but does not influence path selection or link quality. NAT does not reduce packet loss or improve application performance, making it ineffective in resolving this problem.

The reasoning for automatic SLA-based path selection is that it continuously evaluates link performance and proactively routes critical traffic over the best path. This method ensures reliability, reduces packet loss, and provides superior application performance, whereas increasing bandwidth, static routing, or NAT does not solve the root cause.

Question 6

A branch office has two broadband links with variable latency and packet loss. The network administrator wants to ensure that video conferencing traffic always uses the most stable link while less critical web traffic uses any available link. Which Fortinet SD-WAN feature should be configured?

A) Link load balancing
B) SLA-based path selection with application prioritization
C) Manual failover
D) Policy-based NAT

Answer: B

Explanation

A) Link load balancing distributes traffic evenly across multiple links regardless of link quality. While this might seem useful for spreading load, it does not take into account the performance metrics critical for applications like video conferencing. Sending latency-sensitive traffic over a link with high packet loss could result in poor video quality, jitter, and dropped calls. Equal distribution treats all traffic the same, which is inadequate for scenarios requiring prioritization based on performance.

B) SLA-based path selection with application prioritization is the correct solution. This feature allows the administrator to define Service Level Agreements for specific applications, such as maximum allowable latency, packet loss, or jitter. Video conferencing traffic can be prioritized and routed through the link that meets these performance criteria, while non-critical traffic like web browsing can use the remaining links. Fortinet SD-WAN constantly monitors link performance in real time and dynamically adjusts routing to maintain application SLAs. This ensures that critical applications receive optimal performance while utilizing all available WAN resources efficiently.

C) Manual failover is a reactive approach where an administrator switches traffic to an alternate link if the primary link fails. While it provides redundancy, it does not optimize for performance under normal conditions. Manual failover cannot respond to transient network issues or continuously maintain SLA compliance, making it unsuitable for latency-sensitive applications like video conferencing.

D) Policy-based NAT translates IP addresses according to defined rules. Although necessary for connectivity and addressing scenarios, NAT does not influence path selection, link prioritization, or application performance. It cannot prevent high-latency or high-packet-loss links from affecting video conferencing traffic.

The reasoning for choosing SLA-based path selection with application prioritization is that SD-WAN’s core capability lies in its ability to monitor link health continuously and route traffic based on real-time metrics. By defining SLAs for critical applications, the system ensures that latency-sensitive traffic always takes the optimal path. This approach maximizes performance, prevents interruptions, and reduces administrative overhead compared to reactive or static methods. It also ensures efficient use of all available links by allowing less critical traffic to flow on lower-quality paths without affecting user experience.

Question 7

Which mechanism in Fortinet SD-WAN allows administrators to automatically divert traffic away from links experiencing high latency or packet loss?

A) Static routing
B) Dynamic SLA monitoring and path selection
C) Policy-based NAT
D) Manual link failover

Answer: B

Explanation

A) Static routing defines fixed paths for network traffic based on destination addresses or prefixes. Static routes do not adapt to changing network conditions, meaning traffic could continue to traverse a link experiencing congestion, packet loss, or high latency. This rigidity makes static routing unsuitable for scenarios where performance optimization is required.

B) Dynamic SLA monitoring and path selection is the correct mechanism. Fortinet SD-WAN continuously monitors key performance indicators, including latency, jitter, and packet loss, for each WAN link. When a link fails to meet the defined SLA thresholds, traffic is automatically rerouted to the next optimal link. This proactive, automated mechanism ensures that critical applications maintain performance standards even when link quality fluctuates. Administrators can also prioritize applications, ensuring that latency-sensitive traffic such as VoIP or video conferencing is always routed on the best-performing paths, while less critical traffic utilizes other available links.

C) Policy-based NAT controls IP address translation and does not influence path selection. While necessary for connectivity and certain security configurations, NAT has no role in optimizing traffic flow or rerouting traffic based on network performance.

D) Manual link failover requires an administrator to detect degraded link performance and switch traffic to an alternate link. This approach is reactive, error-prone, and slow to respond compared to dynamic SLA-based routing. High-priority applications could experience downtime or degraded performance before manual intervention occurs.

The reasoning for selecting dynamic SLA monitoring and path selection is that Fortinet SD-WAN leverages continuous link monitoring and real-time metrics to make proactive routing decisions. This ensures optimal application performance without human intervention, minimizes packet loss, maintains quality for critical services, and enhances the overall user experience. It combines automation, performance awareness, and traffic prioritization, which static routing, NAT, or manual failover cannot provide.

Question 8

A branch office has one MPLS link and one broadband link. File transfer traffic is delayed on MPLS due to high utilization, but VoIP traffic is prioritized. Which SD-WAN feature ensures VoIP continues uninterrupted while file transfers use the broadband link?

A) Load balancing based on bandwidth
B) Application-aware SLA routing
C) Static route preference
D) Manual traffic shaping

Answer: B

Explanation

A) Load balancing based on bandwidth spreads traffic according to available bandwidth but does not consider application-specific requirements or link performance metrics like latency or jitter. In this scenario, simply balancing traffic could send VoIP over the congested MPLS link, resulting in poor call quality. Bandwidth-based balancing is insufficient for performance-sensitive applications.

B) Application-aware SLA routing is the correct solution. This SD-WAN feature monitors link performance in real time and routes applications according to their specific SLAs. VoIP, being latency-sensitive, is prioritized on the MPLS link if it meets the SLA thresholds, ensuring uninterrupted service. File transfers, which are less sensitive to latency, are routed over the broadband link to prevent congestion on MPLS. This intelligent routing optimizes network performance, maintains application SLAs, and ensures critical services are uninterrupted while utilizing all available WAN resources efficiently.

C) Static route preference involves manually assigning priority to routes. While it might allow some level of traffic separation, it is not adaptive to changing network conditions. If the MPLS link becomes congested or fails, static routing cannot dynamically reroute traffic, risking VoIP quality and file transfer delays.

D) Manual traffic shaping requires administrators to define bandwidth limits or priorities for specific traffic. This approach is static and labor-intensive, unable to adapt in real time to fluctuating network conditions. It may temporarily alleviate congestion but cannot guarantee continuous SLA compliance for latency-sensitive traffic like VoIP.

The reasoning for choosing application-aware SLA routing is that it provides dynamic, automated traffic management based on real-time network performance and application requirements. Critical traffic such as VoIP is prioritized, while less sensitive traffic is rerouted to optimize link usage and prevent congestion. This ensures the highest quality of experience, reduces administrative overhead, and maximizes the efficiency of the SD-WAN deployment.

Question 9

An enterprise wants to reduce WAN costs while maintaining high performance for business-critical applications. Which Fortinet SD-WAN capability helps achieve this?

A) Dynamic path selection with SLA enforcement
B) Static routing across MPLS links
C) NAT for all branch traffic
D) Manual failover to broadband links

Answer: A

Explanation

A) Dynamic path selection with SLA enforcement is correct. This capability continuously monitors WAN link performance metrics, such as latency, jitter, and packet loss, and routes applications based on their defined SLAs. Business-critical applications are automatically routed over high-quality, low-latency links, ensuring performance, while less critical traffic can use lower-cost broadband links. This intelligent traffic management reduces reliance on expensive MPLS circuits and optimizes the use of available WAN resources, effectively lowering costs while maintaining performance.

B) Static routing across MPLS links provides reliability but lacks adaptability. It does not respond to congestion or link degradation, potentially leading to delays for critical applications. Static routing also prevents the use of lower-cost alternatives, reducing cost efficiency.

C) NAT ensures proper address translation for connectivity purposes but does not influence path selection, link performance, or WAN cost. It is essential for network communication but cannot optimize traffic flow or reduce expenses.

D) Manual failover to broadband links is reactive and labor-intensive. While it can provide cost savings during outages, it cannot proactively optimize traffic for performance or cost under normal conditions. Manual intervention introduces delays and the risk of misconfiguration, limiting its effectiveness.

The reasoning for selecting dynamic path selection with SLA enforcement is that it combines performance optimization and cost efficiency. Critical traffic is routed over the best-performing links, while lower-priority traffic can use cheaper options, ensuring maximum utilization of WAN resources. Automated monitoring and routing eliminate the need for manual adjustments and enable enterprises to balance performance and cost effectively, making it superior to static routing, NAT, or manual failover.

Question 10

Which SD-WAN strategy ensures minimal disruption for VoIP during temporary broadband link degradation?

A) SLA-based automatic failover
B) Manual switch to MPLS
C) Load balancing traffic equally across all links
D) Disable SD-WAN and use static routing

Answer: A

Explanation

A) SLA-based automatic failover is correct. SD-WAN monitors performance metrics such as latency, jitter, and packet loss in real time. If a broadband link degrades temporarily, the system automatically reroutes VoIP traffic to the best-performing link, ensuring uninterrupted communication. This proactive approach maintains SLA compliance and reduces user impact without requiring human intervention, making it the most effective solution for latency-sensitive applications.

B) Manual switching to MPLS is reactive, relying on an administrator to detect the degradation and take action. This introduces delays and potential service interruptions, which can negatively affect VoIP quality. Manual intervention cannot guarantee continuous SLA compliance or timely response to transient network issues.

C) Load balancing traffic equally across all links ignores link performance. During degradation, VoIP may continue to traverse the affected broadband link, resulting in poor call quality, jitter, and dropped packets. Equal distribution is inadequate for latency-sensitive applications and cannot adapt to temporary network issues.

D) Disabling SD-WAN and using static routing removes the intelligence of dynamic path selection. Static routes cannot respond to temporary link degradation, leaving VoIP vulnerable to packet loss, high latency, or dropped calls.

The reasoning for selecting SLA-based automatic failover is that it ensures real-time monitoring and intelligent rerouting of critical traffic. VoIP quality is maintained even during temporary network disruptions, while less critical traffic may use degraded links or other paths. Automation ensures minimal disruption, maximum reliability, and consistent application performance, which static routing, manual switching, or equal load balancing cannot achieve.

Question 11

A branch office has multiple WAN links: MPLS, broadband, and LTE. The administrator wants to ensure that mission-critical ERP traffic always uses the best link while less critical email traffic uses lower-cost links. Which Fortinet SD-WAN feature accomplishes this?

A) Static routing based on link preference
B) Application-based SLA routing
C) Manual traffic switching
D) Load balancing across all links equally

Answer: B

Explanation

A) Static routing based on link preference involves manually assigning a preferred route for each type of traffic. While it can direct traffic to a specific link, it is not adaptive to real-time network conditions. If the preferred MPLS link experiences high latency, jitter, or packet loss, critical ERP traffic could be negatively impacted. Static routing does not provide dynamic adjustments based on application performance, making it inadequate for maintaining consistent performance for mission-critical applications.

B) Application-based SLA routing is the correct choice. This feature allows administrators to define performance requirements for specific applications, such as maximum allowable latency, packet loss, and jitter. SD-WAN continuously monitors WAN link conditions and dynamically routes ERP traffic over the link that meets the SLA, while less critical traffic such as email can utilize lower-cost broadband or LTE links. This ensures mission-critical applications receive consistent, high-quality performance while optimizing WAN cost and resource utilization. Dynamic, application-aware routing is a core advantage of Fortinet SD-WAN, allowing enterprises to maintain both performance and efficiency across heterogeneous WAN links.

C) Manual traffic switching requires an administrator to detect network degradation or congestion and manually reroute traffic. This approach is reactive and prone to delays and errors. Critical ERP traffic may experience temporary disruption before corrective action is taken, making this method inefficient for latency-sensitive or business-critical applications.

D) Load balancing across all links equally distributes traffic without considering link performance or application priorities. Latency-sensitive ERP traffic may traverse degraded or high-jitter links, negatively impacting performance. Equal distribution fails to differentiate between critical and non-critical traffic, undermining the ability to meet SLAs and provide reliable user experience.

The reasoning for selecting application-based SLA routing is that it combines real-time link monitoring with intelligent application prioritization. Mission-critical applications are always routed on optimal links, ensuring performance and reliability. Less critical traffic is efficiently offloaded to cost-effective or lower-quality links, maximizing WAN utilization while minimizing expenses. Static routing, manual switching, or equal load balancing cannot provide this level of automated performance optimization and application-aware intelligence, making SLA-based routing the most effective choice.

Question 12

Which Fortinet SD-WAN feature helps reduce packet loss and jitter for voice and video traffic across multiple WAN links?

A) Performance SLA monitoring and path selection
B) NAT for branch traffic
C) Manual link failover
D) Equal load balancing

Answer: A

Explanation

A) Performance SLA monitoring and path selection is the correct answer. SD-WAN continuously tracks critical link performance metrics, including latency, jitter, and packet loss. By defining SLAs for voice and video traffic, the system automatically selects the optimal path that meets performance criteria. This ensures high-quality, uninterrupted communication even when some links experience degradation. SLA-based routing is particularly effective for latency-sensitive applications because it prioritizes paths that minimize jitter and packet loss while maintaining consistent connectivity, a core capability of Fortinet SD-WAN.

B) NAT for branch traffic is essential for IP address translation but has no effect on packet loss, jitter, or application performance. NAT enables connectivity but does not monitor or dynamically reroute traffic based on link conditions.

C) Manual link failover is reactive, requiring an administrator to detect degraded links and switch traffic. This introduces delays and risks disruption to real-time traffic like VoIP or video conferencing. Manual intervention is too slow to guarantee uninterrupted service for latency-sensitive applications.

D) Equal load balancing distributes traffic uniformly across all available links regardless of quality. While this may optimize bandwidth usage in some cases, it can expose latency-sensitive traffic to degraded or high-packet-loss links, causing voice or video performance issues. Load balancing alone does not provide application-specific prioritization or SLA compliance.

The reasoning for selecting performance SLA monitoring and path selection is that SD-WAN is designed to automatically ensure critical traffic meets performance thresholds. Voice and video traffic require low latency and minimal jitter; SLA monitoring ensures that only links meeting these thresholds carry such traffic. Other mechanisms like NAT, manual failover, or equal load balancing do not dynamically optimize for link quality or application-specific performance, making them ineffective for maintaining high-quality real-time communications.

Question 13

A company wants to optimize its WAN traffic so that critical applications use high-quality links, while less important traffic uses lower-cost links. Which approach in Fortinet SD-WAN achieves this goal?

A) Application-aware SLA routing
B) Static routing
C) Manual failover
D) Equal distribution load balancing

Answer: A

Explanation

A) Application-aware SLA routing is the correct solution. This approach enables administrators to define specific performance requirements for each application, such as latency, jitter, and packet loss thresholds. SD-WAN continuously monitors WAN links and automatically routes traffic to the path that meets these requirements. Critical applications are prioritized on high-quality links, while less critical traffic can use cost-effective links, optimizing both performance and cost. This method also allows dynamic adaptation to changing network conditions, ensuring consistent user experience without manual intervention. Application-aware SLA routing is a key differentiator of Fortinet SD-WAN, providing automated, intelligent traffic management that aligns with business priorities.

B) Static routing defines fixed paths without considering network performance or application requirements. While it is simple to implement, it does not adapt to fluctuating link conditions or prioritize traffic based on application importance. Critical applications may be routed over degraded links, resulting in poor performance.

C) Manual failover is reactive and labor-intensive. Administrators must identify degraded links and reroute traffic manually. This approach cannot respond in real time to transient network issues and risks performance degradation for critical applications during the delay.

D) Equal distribution load balancing treats all traffic the same, sending packets evenly across available links. While it maximizes bandwidth usage, it does not differentiate between high-priority and low-priority traffic, exposing latency-sensitive or critical applications to suboptimal paths.

The reasoning for selecting application-aware SLA routing is that it provides both automated performance optimization and cost efficiency. Critical applications always receive the best path based on real-time metrics, while less critical traffic utilizes lower-cost options. This dynamic, intelligent approach ensures consistent service quality, reduces manual intervention, and maximizes WAN resource utilization, making it superior to static routing, manual failover, or equal load balancing.

Question 14

A branch office has two Internet links. The administrator wants SD-WAN to automatically reroute traffic if one link becomes congested or experiences high packet loss. Which Fortinet SD-WAN feature should be used?

A) SLA-based automatic path selection
B) Static route preference
C) Manual failover
D) Load balancing without SLA

Answer: A

Explanation

A) SLA-based automatic path selection is correct. This feature monitors latency, jitter, and packet loss across all WAN links and automatically selects the best path for each application. If one link becomes congested or degrades in performance, traffic is rerouted to a link that meets the SLA criteria, ensuring uninterrupted service for critical applications. This proactive automation reduces the risk of application disruption and enhances user experience. By continuously evaluating link quality and dynamically adjusting routing, SD-WAN ensures traffic is always on the optimal path, minimizing packet loss and congestion effects.

B) Static route preference defines a fixed priority for routes but does not account for real-time link performance. If a preferred link becomes congested or experiences packet loss, traffic may continue to flow over it, resulting in degraded performance. Static routes are not adaptive and cannot provide the automatic failover required for maintaining application SLAs.

C) Manual failover requires an administrator to detect a link problem and switch traffic to an alternate link. This reactive approach introduces delays and potential errors, which can disrupt critical applications during congestion or packet loss events.

D) Load balancing without SLA distributes traffic across multiple links without considering link quality or application requirements. While it may improve bandwidth utilization, it does not prevent critical traffic from traversing degraded links, leading to packet loss, jitter, or poor performance.

The reasoning for selecting SLA-based automatic path selection is that it proactively monitors and adapts to WAN link conditions in real time. Critical applications receive optimal routing while less critical traffic can traverse secondary or degraded links. This intelligent and automated approach ensures consistent performance, minimizes administrative effort, and maximizes WAN resource utilization. Other methods, such as static routes, manual failover, or load balancing without SLA, cannot guarantee application-specific performance or seamless failover during network degradation.

Question 15

Which Fortinet SD-WAN feature allows the network to dynamically adjust traffic routes based on real-time performance metrics like latency, jitter, and packet loss?

A) Performance SLA monitoring with dynamic path selection
B) NAT for branch traffic
C) Manual link switching
D) Equal load balancing

Answer: A

Explanation

A) Performance SLA monitoring with dynamic path selection is correct. This feature continuously measures latency, jitter, and packet loss across WAN links and automatically reroutes traffic to the best-performing path for each application. Latency-sensitive and critical applications such as VoIP, video conferencing, and ERP systems are prioritized on links that meet defined SLAs. This real-time, dynamic adjustment ensures consistent application performance, minimizes packet loss, and reduces the risk of service disruption. By automating path selection, SD-WAN eliminates the need for manual intervention and ensures efficient utilization of all WAN links.

B) NAT for branch traffic translates IP addresses for connectivity purposes but does not influence routing or application performance. While necessary for communication, NAT cannot monitor link performance or reroute traffic dynamically, making it ineffective for performance optimization.

C) Manual link switching requires administrators to detect performance issues and manually reroute traffic. This reactive approach introduces delays and is prone to errors, especially in fast-changing network environments. Critical applications may experience degradation before corrective action is taken.

D) Equal load balancing distributes traffic evenly across available links without considering link quality or application requirements. While it maximizes bandwidth usage in theory, it can expose latency-sensitive applications to poor-performing links, leading to jitter, packet loss, or degraded performance.

The reasoning for selecting performance SLA monitoring with dynamic path selection is that it combines continuous real-time link monitoring with automated traffic optimization. This ensures critical applications always traverse the best-performing paths, while less critical traffic can use secondary links. It provides proactive, application-aware optimization that static routing, NAT, manual switching, or simple load balancing cannot achieve, ensuring high performance, reliability, and efficient WAN utilization.

Question 16

A branch office has three WAN links: MPLS, broadband, and LTE. The network administrator wants SD-WAN to automatically reroute traffic if the primary link experiences high jitter or latency. Which Fortinet SD-WAN feature achieves this?

A) SLA-based automatic path selection
B) Static routing
C) Manual link failover
D) Equal load balancing

Answer: A

Explanation

A) SLA-based automatic path selection is the correct choice. This feature continuously monitors WAN link performance metrics, including latency, jitter, and packet loss. When the primary link fails to meet predefined SLA thresholds, SD-WAN dynamically reroutes traffic to the most optimal link. Critical applications such as VoIP, video conferencing, or ERP systems are prioritized to maintain performance, while less sensitive traffic can utilize backup links. This automated process ensures uninterrupted service without requiring manual intervention. SLA-based path selection provides proactive traffic management, improves user experience, and optimizes WAN utilization.

B) Static routing relies on predefined paths and does not account for real-time network conditions. If the primary link experiences high latency or jitter, traffic will continue to traverse the affected link, causing performance degradation. Static routing is inflexible and cannot maintain SLA compliance for critical applications.

C) Manual link failover requires an administrator to detect link issues and switch traffic manually. This reactive approach introduces delays and is prone to human error. Critical applications may experience service degradation before failover occurs, making it unsuitable for real-time traffic optimization.

D) Equal load balancing distributes traffic evenly across all available links regardless of performance. Latency-sensitive applications may still traverse degraded links, resulting in jitter, packet loss, and poor user experience. Equal distribution does not provide application-aware optimization or SLA compliance.

The reasoning for selecting SLA-based automatic path selection is that it combines continuous monitoring with intelligent, automated routing. This ensures that critical applications always traverse optimal paths, minimizes disruptions due to link degradation, and enhances WAN efficiency. Unlike static routing, manual failover, or equal load balancing, this feature proactively maintains service quality while reducing administrative effort.

Question 17

A company wants to reduce WAN costs while ensuring high performance for its VoIP and video conferencing applications. Which Fortinet SD-WAN feature supports this goal?

A) Application-aware SLA routing with link selection
B) Static routing
C) Manual link switching
D) Equal distribution of traffic

Answer: A

Explanation

A) Application-aware SLA routing with link selection is the correct approach. This feature allows administrators to define SLAs for specific applications, including maximum allowable latency, jitter, and packet loss. SD-WAN continuously monitors link performance and routes critical VoIP or video traffic through links that meet these thresholds. Less critical traffic, such as file transfers or general web browsing, can use lower-cost links such as broadband or LTE. This approach ensures high performance for business-critical applications while reducing WAN costs by optimizing the use of all available links. It eliminates the need for expensive MPLS-only deployments while maintaining SLA compliance.

B) Static routing is inflexible and does not adapt to changing link conditions. While it can provide predictable paths, it cannot dynamically optimize traffic based on application requirements or link performance. Critical VoIP or video traffic may traverse degraded links, resulting in jitter, latency, and packet loss.

C) Manual link switching is reactive and labor-intensive. Administrators must monitor WAN link health and reroute traffic when performance degrades, which introduces delays and potential errors. This approach cannot guarantee SLA compliance or seamless performance for real-time applications.

D) Equal distribution of traffic treats all applications the same and does not consider link quality or performance. While it may maximize bandwidth usage, latency-sensitive applications may still traverse degraded links, resulting in poor call or video quality. Equal distribution cannot optimize performance or cost effectively.

The reasoning for selecting application-aware SLA routing with link selection is that it enables dynamic, automated traffic management based on real-time WAN performance. Critical applications receive priority over high-quality links, while non-critical traffic uses lower-cost options, reducing overall WAN expenses without compromising user experience. This proactive, intelligent approach ensures continuous SLA compliance, high performance, and efficient WAN utilization.

Question 18

Which Fortinet SD-WAN feature allows administrators to prioritize VoIP traffic over less critical file transfer traffic on multiple WAN links?

A) Application-based SLA prioritization
B) Static routing
C) Manual failover
D) Equal load balancing

Answer: A

Explanation

A) Application-based SLA prioritization is correct. This feature allows administrators to assign priority levels to specific applications and define performance requirements such as maximum latency, jitter, and packet loss. SD-WAN monitors link performance in real time and ensures VoIP traffic, which is latency-sensitive, is routed over the highest-performing link. Less critical file transfer traffic can be directed to secondary or lower-cost links. This guarantees high-quality voice communications while optimizing WAN usage. Prioritization based on SLA ensures that critical traffic maintains performance even during link congestion or degradation.

B) Static routing assigns fixed paths to traffic without considering link performance or application requirements. While it may provide predictable routing, it cannot guarantee performance for VoIP traffic, which is highly sensitive to latency and jitter. Static routes do not adapt to changing network conditions.

C) Manual failover relies on administrators to detect degraded links and switch traffic manually. This reactive approach introduces delays and risks disruptions to VoIP calls or other real-time applications. It does not provide continuous performance optimization.

D) Equal load balancing distributes traffic evenly across all links without considering application requirements or link performance. Latency-sensitive VoIP traffic may traverse links with high jitter or packet loss, resulting in poor voice quality. Equal load balancing does not provide prioritization or SLA compliance.

The reasoning for selecting application-based SLA prioritization is that it ensures critical applications such as VoIP are routed over optimal links while lower-priority traffic uses available secondary paths. Real-time monitoring and automated traffic adjustment prevent packet loss, reduce jitter, and maintain high-quality communications. Unlike static routing, manual failover, or equal load balancing, SLA prioritization provides proactive, application-aware traffic management that enhances performance, reliability, and user experience.

Question 19

A branch office is experiencing frequent packet loss on its broadband link. The network administrator wants SD-WAN to automatically reroute critical ERP traffic to MPLS while using broadband for less critical traffic. Which feature should be implemented?

A) SLA-based dynamic path selection with application prioritization
B) Static routing
C) Manual link failover
D) Equal distribution load balancing

Answer: A

Explanation

A) SLA-based dynamic path selection with application prioritization is correct. This feature continuously monitors link quality metrics such as latency, packet loss, and jitter. When the broadband link experiences packet loss exceeding SLA thresholds, SD-WAN automatically reroutes critical ERP traffic to MPLS, ensuring uninterrupted business operations. Less critical traffic can continue using the broadband link, optimizing WAN utilization and minimizing cost. This proactive, intelligent approach guarantees SLA compliance, high performance, and efficient resource allocation. Dynamic path selection combined with application-aware prioritization ensures that critical traffic always receives the best path based on real-time conditions.

B) Static routing defines fixed paths and does not adapt to link degradation. ERP traffic may continue to traverse the packet-loss-affected broadband link, causing performance issues. Static routes do not provide dynamic performance optimization.

C) Manual link failover requires the administrator to monitor network performance and reroute traffic manually. This reactive approach introduces delays and potential errors, risking business-critical application performance during outages or congestion.

D) Equal distribution load balancing sends traffic evenly across all links without considering link quality or application priority. Latency-sensitive or critical applications may traverse degraded links, leading to poor performance and SLA violations.

The reasoning for selecting SLA-based dynamic path selection with application prioritization is that it proactively monitors link health and automatically reroutes traffic according to application requirements. Critical ERP traffic is prioritized over high-quality links, while non-critical traffic uses lower-quality or lower-cost links. This approach ensures reliable performance, reduces administrative effort, and maximizes WAN efficiency, which static routing, manual failover, or equal distribution cannot achieve.

Question 20

Which Fortinet SD-WAN feature ensures real-time rerouting of traffic when WAN link performance falls below predefined thresholds?

A) SLA-based automatic path selection
B) Static route preference
C) Manual failover
D) Equal load balancing

Answer: A

Explanation

A) SLA-based automatic path selection is correct. This feature monitors real-time WAN link performance metrics, including latency, jitter, and packet loss, and dynamically reroutes traffic when a link fails to meet predefined thresholds. Critical applications such as VoIP, ERP, and video conferencing are automatically routed over the best-performing links, while less critical traffic is sent through available secondary paths. This proactive, automated approach ensures uninterrupted service, maintains SLA compliance, and enhances user experience. By continuously assessing link quality and dynamically selecting optimal paths, SD-WAN minimizes disruptions, improves reliability, and optimizes bandwidth utilization.

B) Static route preference assigns priority to specific routes but does not adapt to real-time network conditions. If a preferred link becomes degraded, traffic may continue to traverse it, causing performance issues. Static routing lacks automation and cannot ensure SLA compliance.

C) Manual failover requires administrators to detect WAN degradation and reroute traffic manually. This reactive approach introduces delays and increases the risk of errors. Critical applications may experience interruptions before corrective action is taken.

D) Equal load balancing distributes traffic evenly across all links without considering link quality or application priority. Latency-sensitive or critical applications may be routed over degraded links, resulting in packet loss, jitter, or service interruptions.

The reasoning for selecting SLA-based automatic path selection is that it provides continuous monitoring and proactive traffic optimization. Critical applications are routed over optimal links, while less critical traffic utilizes secondary links, maximizing WAN efficiency. Automation eliminates the need for manual intervention, reduces disruptions, and ensures high-quality service. Static routing, manual failover, and equal load balancing cannot provide the same level of real-time, application-aware optimization.