FCSS_SDW_AR-7.4 実際試験問題と解答 - 模擬練習 - 受験自信を増やす

Question No : 1
Which two statements about SLA targets and SD-WAN rules are true? (Choose two.)

A.SD-WAN rules use SLA targets to check if the preferred members meet the SLA requirements
B.Member metrics are measured only if an SLA target is configured
C.When configuring an SD-WAN rule you can select multiple SLA targets of the same performance SLA
D.SLA targets are used only by SD-WAN rules that are configured with Lowest Cost (SLA) or Maximize Bandwidth (SLA) as strategy

正解:

Question No : 2
Which diagnostic command can you use to show the member utilization statistics measured by performance SLAs for the last 10 minutes?

A.diagnose sys sdwan sla-log
B.diagnose ays sdwan health-check
C.diagnose sys sdwan intf-sla-log
D.diagnose sys sdwan log

正解:

Question No : 3
The SD-WAN overlay template helps to prepare SD-WAN deployments. To complete the tasks performed by the SD-WAN overlay template, the administrator must perform some post-run tasks.
What are three mandatory post-run tasks that must be performed? (Choose three.)

A.Assign an sdwan_id metadata variable to each device (branch and hub).
B.Assign a branch_id metadata variable to each branch device.
C.Create policy packages for branch devices.
D.Configure SD-WAN rules.
E.Configure routing through overlay tunnels created by the SD-WAN overlay template.

正解:

Question No : 4
Refer to the exhibit.

Which statement about the role of the ADVPN device in handling traffic is true?

A.This is a spoke that has received a query from a remote hub and has forwarded the response to its hub.
B.Two hubs, 10.0.1.101 and 10.0.2.101, are receiving and forwarding queries between each other.
C.This is a hub that has received a query from a spoke and has forwarded it to another spoke.
D.Two spokes, 192.2.0.1 and 10.0.2.101, forward their queries to their hubs.

正解:

Question No : 5
Refer to the exhibit.

An administrator is troubleshooting SD-WAN on FortiGate. A device behind branch1_fgt generates traffic to the 10.0.0.0/8 network. The administrator expects the traffic to match SD-WAN rule ID 1 and be routed over T_INET_0_0. However, the traffic is routed over T_INET_1_0.
Based on the output shown in the exhibit, which two reasons can cause the observed behavior? (Choose two.)

A.The traffic matches a regular policy route configured with T_INET_1_0 as the outgoing device.
B.T_INET_1_0 has a lower route priority value (higher priority) than T_INET_0_0.
C.T_INET_0_0 does not have a valid route to the destination.
D.T_INET_1_0 has a higher member configuration priority than T_INET_0_0.

正解:
Explanation:
SD-WAN strategy is Lowest Cost (SLA) as indicated by the "Mode(sla)" flag. Cost SLA uses SLA target, cost, and priority (i.e., interface preference - or order of config unless manually overridden by admin config) as the criteria -- in that order. Both members meet the target, both have 0 cost, and therefore member 3 (T_INET_0) wins the "priority" tiebreaker. So if there is a valid route to the destination through member 3, it will win. The fact that it does not has nothing to do with the configured static route/member priority, which according to SG page 197 "is used as a tiebreaker for ECMP routes when matching implicit SD-WAN rule."

Question No : 6
Two hub-and-spoke groups are connected through a site-to-site IPsec VPN between Hub 1 and Hub 2. The administrator configured ADVPN on both hub-and-spoke groups.

Which two outcomes are expected if a user in Toronto sends traffic to London? (Choose two.)

A.London generates an IKE information message that contains the Toronto public IP address.
B.Traffic from Toronto to London triggers the dynamic negotiation of a direct site-to-site VP
C.Toronto needs to establish a site-to-site tunnel with Hub 2 to bypass Hub 1.
D.The first packets from Toronto to London are routed through Hub 1 then to Hub 2.

正解:

Question No : 7
What is the route-tag setting in an SD-WAN rule used for?

A.To indicate the routes for health check probes.
B.To indicate the destination of a rule based on learned BGP prefixes.
C.To indicate the routes that can be used for routing SD-WAN traffic.
D.To indicate the members that can be used to route SD-WAN traffic.

正解:
Explanation:
"Configure SD-WAN *rules* to steer traffic to members only if routes have a specific route-tag." Agree with Cyril - although A says the largely same thing as D, route-tag specifically get used by the SD-WAN rule to determine next-hop (i.e., destination). SG p 142 shows "how an administrator can use [route-]tags in SD-WAN rules."

Question No : 8
Refer to the exhibits.
Exhibit A

Exhibit B

Exhibit A shows the source NAT (SNAT) global setting and exhibit B shows the routing table on FortiGate.
Based on the exhibits, which two actions does FortiGate perform on existing sessions established over port2, if the administrator increases the static route priority on port2 to 20? (Choose two.)

A.FortiGate flags the sessions as dirty.
B.FortiGate continues routing the sessions with no SNAT, over port2.
C.FortiGate performs a route lookup for the original traffic only.
D.FortiGate updates the gateway information of the sessions with SNAT so that they use port1 instead of port2.

正解:

Question No : 9
Exhibit.

The exhibit shows VPN event logs on FortiGate. In the output shown in the exhibit, which statement is true?

A.There are no IPsec tunnel statistics log messages for ADVPN cuts.
B.There is one shortcut tunnel built from master tunnel T_MPLS_0.
C.The VPN tunnel T_MPLS_0 is a shortcut tunnel.
D.The master tunnel T_INET_0 cannot accept the ADVPN shortcut.

正解:

Question No : 10
Refer to the exhibits.
Exhibit A

Exhibit B

Exhibit A shows the configuration for an SD-WAN rule and exhibit B shows the respective rule status, the routing table, and the member status.
The administrator wants to understand the expected behavior for traffic matching the SD-WAN rule. Based on the exhibits, what can the administrator expect for traffic matching the SD-WAN rule?

A.The traffic will be load balanced across all three overlays.
B.The traffic will be routed over T_INET_0_0.
C.The traffic will be routed over T_MPLS_0.
D.The traffic will be routed over T_INET_1_0.

正解:

Question No : 11
Exhibit.

The exhibit shows the output of the command diagnose sys sdwan health-check status collected on a FortiGate device.
Which two statements are correct about the health check status on this FortiGate device? (Choose two.)

A.The health-check VPN_PING orders the members according to the lowest jitter.
B.The interface T_INET_1 missed one SLA target.
C.There is no SLA criteria configured for the health-check Level3_DN
D.The interface T_INET_0 missed three SLA targets.

正解:
Explanation:
According to the FortiGate / FortiOS 6.4.2 Administration Guide, the health check status command displays the status of the health check probes for each SD-WAN member interface. The output includes the following information:
state: the current state of the interface, either alive or dead
packet-loss: the percentage of packets lost during the health check
latency: the average round-trip time in milliseconds
jitter: the variation in latency
mos: the mean opinion score, a measure of voice quality
bandwidth: the available bandwidth in kilobits per second for each direction (up, down, bi)
sla map: a bitmap that indicates which SLA criteria are met or failed
Based on the exhibit, the following statements are correct:
The health-check VPN_PING orders the members according to the lowest jitter. This means that the interface with the lowest jitter value is listed first, followed by the next lowest, and so on1. In the exhibit, the order is T_MPLS, T_INET_1, and T_INET_0.
There is no SLA criteria configured for the health-check Level3_DNS. This means that the health check does not use any SLA parameters to determine the state of the interface2. In the exhibit, the sla map value is 0x0 for both port1 and port2, indicating that no SLA criteria are applied.

Question No : 12
Which two statements about the SD-WAN zone configuration are true? (Choose two.)

A.The service-sla-tie-break setting enables you to configure preferred member selection based on the best route to the destination.
B.You can delete the default zones.
C.The default zones are virtual-wan-link and SAS
D.An SD-WAN member can belong to two or more zones.

正解:

Question No : 13
Which statement about SD-WAN zones is true?

A.An SD-WAN zone can contain only one type of interface.
B.An SD-WAN zone can contain between 0 and 512 members.
C.You cannot use an SD-WAN zone in static route definitions.
D.You can configure up to 32 SD-WAN zones per VDO

正解:
Explanation:
Option A is incorrect because SD-WAN zones can include multiple interface types (e.g., physical, VLAN, tunnels), as explained in the study guide’s discussion of member configuration.
Option B is correct because an SD-WAN zone can logically have zero members (an empty zone) and up to a large number of members, with 512 being a reasonable upper bound supported by Fortinet’s scalability, even if not explicitly stated in the study guide.
Option C is incorrect because the study guide clearly states that SD-WAN zones can be used in static route definitions, enhancing routing flexibility.
Option D, while possibly true based on Fortinet’s typical limits, lacks a definitive reference in the Fortinet SD-WAN Study Guide for FortiOS 7.2 to confirm "32" as the exact number, making it less certain than Option B.
Reference: Fortinet SD-WAN Study Guide for FortiOS 7.2, Section 3: Members, Zones, and Performance SLAs (description of interface types and zones).
Fortinet SD-WAN Study Guide for FortiOS 7.2, Section 4: Routing and Sessions (use of SD-WAN zones in static routes).
Fortinet Documentation: SD-WAN members and zones | FortiGate / FortiOS 7.2.4 (general behavior and flexibility of zones).

Question No : 14
What are two benefits of using the Internet service database (ISDB) in an SD-WAN rule? (Choose two.)

A.The ISDB is dynamically updated and reduces administrative overhead.
B.The ISDB requires application control to maintain signatures and perform load balancing.
C.The ISDB applies rules to traffic from specific sources, based on application type.
D.The ISDB contains the IP addresses and port ranges of well-known internet services.

正解:

Question No : 15
Refer to the exhibit.

The exhibit shows the SD-WAN rule status and configuration.
Based on the exhibit, which change in the measured packet loss will make T_INET_1_0 the new preferred member?

A.When all three members have the same packet loss.
B.When T_INET_0_0 has 4% packet loss.
C.When T_INET_0_0 has 12% packet loss.
D.When T_INET_1_0 has 4% packet loss.

正解:

Fortinet FCSS_SDW_AR-7.4 問題練習