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>> Versa Networks VNX301テスト問題集 <<
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質問 # 36
A tenant uses CGNAT for internet breakout. You want to verify whether CGNAT rules, pools, static NAT entries, subscribers, and endpoint-independent mapping entries are programmed in the vsmd daemon for a tenant. Which command should you use after connecting to vsmd?
正解：D
解説：
The correct answer is A . Versa CGNAT troubleshooting documentation provides commands to inspect CGNAT state inside the vsmd daemon. To view summary information about configured tenants, the document instructs administrators to issue show cgnat tenants . The sample output shows each tenant ID and counters such as the number of configured rules, pools, DS-Lite service chains, 6RD service chains, static NAT entries, subscribers, endpoint-independent mapping entries, endpoint-independent filtering entries, and softwires.
This command is especially useful when CGNAT configuration appears correct in Director but translation is not happening, because it confirms whether the runtime dataplane process actually has the tenant CGNAT state.
show interfaces brief shows interface status and IP addressing. show alarms shows event notifications, and show system uptime shows how long the system has been running. These are useful operational commands but do not show CGNAT tenant programming inside vsmd.
質問 # 37
Examine the exhibit below.
You are configuring Class of Service on a WAN-facing network interface, and you want to perform DSCP rewrite on the packets that are forwarded to the WAN.
However, you are not able to turn on DSCP rewrite.
Referring to the exhibit, what is the cause of this issue?
正解：B
解説：
In the exhibit, the Add Associate Interface/Network window has Interface selected, and the interface name is set to vni-0/0 . The DSCP rewrite option is not available because rewrite behavior is intended to be applied at the network association level for the WAN network, not directly while associating only the physical
/logical interface. For WAN-facing CoS, the scheduler and shaping parameters can be attached to an interface, but DSCP rewrite policies are applied to remark traffic as it exits through a network context.
Versa SD-WAN design documentation explains that QoS rewrite rules rewrite packet QoS attributes as packets leave the VOS device, and that rewrite rules can modify IEEE 802.1p bits, IPv4 TOS/DSCP bits, and IPv6 traffic class bits. It also explains that a rewrite policy is commonly applied on a WAN network to remark traffic based on the forwarding class and loss priority assigned by QoS or App QoS policies. In the design example, Versa explicitly describes applying a QoS propagation or rewrite policy on the MPLS WAN network to remark traffic to a DSCP value. Therefore, the issue is the association type: it is set to Interface, not Network.
質問 # 38
A branch uses a template variable for the WAN VLAN ID. During deployment, Branch-A receives VLAN
100 and Branch-B receives VLAN 200 from device bind data while using the same template. Which statement is correct?
正解：D
解説：
The correct answer is A . Versa template-based provisioning is designed to separate common configuration from site-specific values. A device template can define common interface, service, routing, and SD-WAN behavior, while variables and device bind data provide unique values for each appliance. This allows the same template to be reused across many branches while assigning different WAN IP addresses, gateways, VLAN IDs, circuit names, or other per-site parameters during onboarding.
In this scenario, Branch-A and Branch-B use the same template but receive different WAN VLAN IDs from bind data. That is normal and expected in a scalable SD-WAN deployment. Without variables, administrators would need to create a separate template for every site, which would be operationally inefficient and increase configuration drift.
The Controller does not automatically rewrite VLAN IDs after IPsec comes up; VLAN IDs must be part of the generated device configuration. It is also not required to duplicate the device template for each branch. The correct Versa design is reusable templates plus unique bind-data values.
質問 # 39
A VOS branch has two WAN circuits. You suspect the configured transport domain mapping is wrong because one link is not building the expected SD-WAN path. Which VSM control-plane command is most useful to check local WAN circuit information, transport domains, NAT status, and local tunnel-site details?
正解：B
解説：
The correct answer is A . Versa SD-WAN data-path troubleshooting documentation instructs administrators to connect to the VSM control plane with vsh connect vsmd and then use show vsm p2mp local-tunnel-sites 0 to check the status of local site objects. The example output includes the local site key, neighbor IP, site type, site name, branch ID, tenant ID, and detailed WAN link information. It also shows fields such as WAN local VRF ID, WAN local link name, circuit information, link ID, behind-NAT status, shaping rate, public and private addresses, link flags, transport domain, and SLA interval.
This command is therefore highly relevant when validating whether the local SD-WAN site has learned and built the correct WAN transport objects for overlay tunnel creation. If a circuit is mapped to the wrong transport domain or has incorrect NAT/public/private address state, the local-tunnel-site output is one of the best places to confirm it.
The other commands are useful for software version, CGNAT summary, or CPU usage, but they do not show the detailed SD-WAN local tunnel-site transport mapping.
質問 # 40
Which two statements are true about the differences between a stateful firewall and a next-generation firewall (NGFW) in a Versa solution? (Choose two.)
正解：A、B
解説：
The correct answers are A and D . A Versa stateful firewall primarily enforces security by tracking connection state and matching packet/session information such as source, destination, zones, services, protocol, and L3/L4 attributes. Versa's CLI configuration guide shows stateful firewall access-policy match options for source and destination addresses, services, IP version, IP flags, DSCP, TTL, and also optional application and URL-category match fields when enhanced services are available.
A Versa NGFW extends this inspection model by adding deeper Layer 7 and UTM capabilities, such as IDS
/IPS, antivirus, URL filtering, file or data filtering, and application-aware enforcement. Versa's SD-WAN design guide specifically describes internet security using the Versa next-generation firewall with unified threat management features, including IDS/IPS and antivirus inspection for DIA traffic. Licensing is also a valid distinction: Versa's SD-WAN licensing overview describes NGFW features as part of solution tiers, so the availability of advanced security functions depends on the licensed tier or subscription
質問 # 41
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