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Question 301. What is the default state of Nexus Dashboard Change Control

1. Mandatory
2. Disabled
3. Enabled
4. Automatic

Correct Answer: 2. Disabled

Explanation:

Nexus Dashboard Change Control is disabled by default. Administrators must explicitly enable the feature before supported configuration operations are tracked through change control tickets. Once enabled, supported changes follow a controlled workflow rather than being deployed immediately through the normal interface. This helps organizations establish stronger operational governance for production network modifications. Change Control is useful when teams need approval separation, deployment tracking, and rollback capabilities for important data center fabric changes. Cisco includes automated network deployment through Nexus Dashboard in the current 300 610 blueprint, making change governance relevant to modern data center operations.

Question 302. Which sequence represents the basic Change Control workflow

1. Discover Delete Reload
2. Backup Erase Restore
3. Configure Reboot Validate
4. Stage Approve Deploy

Correct Answer: 4. Stage Approve Deploy

Explanation:

The normal Nexus Dashboard Change Control workflow separates preparation, approval, and deployment. A proposed change is associated with a ticket, reviewed by an authorized approver, and then deployed by a user with the required deployment permissions. This separation helps organizations implement operational checks before changes reach production devices. Cisco describes roles for change creators, approvers, and deployers so responsibilities can be separated according to governance requirements. The process also retains ticket information that can later be reviewed for auditing and troubleshooting. Controlled deployment is particularly valuable in large fabrics where one configuration change can affect many switches.

Question 303. What happens when a deployed Change Control ticket is rolled back

1. A new rollback ticket is created
2. The fabric is deleted
3. All switches reload
4. The ticket disappears permanently

Correct Answer: 1. A new rollback ticket is created

Explanation:

When an already deployed Change Control ticket is rolled back, Nexus Dashboard creates a new ticket containing the intent required to reverse the deployed change. This maintains operational history instead of silently modifying the previous record. Rollback can also be used on an undeployed ticket, in which case the pending intent changes are reverted and the original ticket is moved to a completed cancelled state. Cisco introduced rollback as an extension of Change Control so administrators can reverse configuration intent in a structured and auditable manner rather than manually rebuilding the previous configuration.

Question 304. What identifies each Nexus Dashboard Change Control operation

1. VLAN number
2. Fabric ASN
3. Unique ticket
4. Switch serial number

Correct Answer: 3. Unique ticket

Explanation:

Nexus Dashboard Change Control tracks supported intent changes through unique tickets. Each ticket records a specific proposed operation and moves through the configured approval and deployment workflow. This gives network teams a clear record of who proposed a change, whether it was approved, and whether deployment succeeded. Tickets are especially useful in environments where several administrators work on the same fabric because they create an explicit operational record instead of relying only on device configuration history. Cisco introduced this ticket based mechanism to provide controlled and traceable fabric change management.

Question 305. What is the default required approver count for Nexus Dashboard orchestration Change Control

1. Zero
2. Two
3. Three
4. One

Correct Answer: 4. One

Explanation:

Cisco documents one required approver as the default when Change Control is enabled for Nexus Dashboard orchestration. Administrators can adjust the required number according to organizational governance requirements. The design allows a company to require additional review for sensitive changes or retain a simpler one approver process for ordinary operations. Cisco also provides an option for self approval, depending on the chosen governance model. These controls allow Nexus Dashboard to support formal change management processes while still automating configuration deployment across large data center fabrics.

Question 306. Which operation should not be combined with Change Control according to Cisco guidance

1. Interface monitoring
2. Fabric backup and restore
3. Network creation
4. VRF editing

Correct Answer: 2. Fabric backup and restore

Explanation:

Cisco recommends using Change Control when granular tracking and rollback of individual intent changes are required. Fabric backup and restore provides a different recovery model based on fabric level configuration snapshots. Cisco guidance notes that the two mechanisms should not be used together for the same workflow. Administrators should therefore choose the recovery approach that fits the operational requirement. Change Control is appropriate for controlled incremental modifications with ticket based rollback, while backup and restore is intended for broader fabric level recovery. Understanding the distinction prevents overlapping recovery mechanisms from creating confusion during production maintenance.

Question 307. What does Recalculate Compliance compare in Nexus Dashboard Fabric Controller

1. Switch state with fabric policy
2. Server UUID with MAC address
3. VSAN with VLAN
4. GPU count with CPU count

Correct Answer: 1. Switch state with fabric policy

Explanation:

Recalculate Compliance compares the actual configuration or software state on managed switches with the intended state defined by the fabric policy. Cisco notes that the operation can update a device from Out of Sync to In Sync when the switch matches the expected policy. It is also useful after direct CLI modifications because Nexus Dashboard can retrieve the current switch information and compare it with fabric intent. Compliance checks help administrators identify configuration drift and maintain consistency across large managed fabrics where manual changes can otherwise cause the deployed state to diverge from centralized policy.

Question 308. What does an Out of Sync compliance state indicate

1. The switch has no power
2. The switch is in NPV mode
3. Actual state differs from intended policy
4. The fabric has no VRFs

Correct Answer: 3. Actual state differs from intended policy

Explanation:

An Out of Sync status indicates that the state found on the managed switch does not match the state expected by the fabric policy. Configuration drift can occur when administrators make changes directly through the switch CLI or when a deployment does not complete as expected. Nexus Dashboard can recalculate compliance and show whether switches match the centralized fabric intent. This provides an operational mechanism for detecting differences before they develop into larger consistency or troubleshooting problems. Maintaining policy compliance is particularly important in VXLAN EVPN fabrics where many switches must share coordinated configuration.

Question 309. What is the default ACI remote endpoint aging interval

1. 630 seconds
2. 300 seconds
3. 900 seconds
4. 60 seconds

Correct Answer: 2. 300 seconds

Explanation:

Cisco ACI uses a default remote endpoint aging interval of 300 seconds when no customized endpoint retention policy overrides the common tenant defaults. A remote endpoint entry represents an endpoint that is attached to another leaf switch. Aging removes stale remote endpoint information when it is no longer refreshed. Cisco provides separate timers because local, remote, and bounce endpoint entries have different forwarding roles and lifecycle requirements. Correct endpoint aging helps the fabric maintain accurate endpoint location information without retaining obsolete mappings indefinitely. Designers can tune the timer when application behavior or endpoint mobility patterns justify a different value.

Question 310. What is the default ACI bounce entry aging interval

1. 630 seconds
2. 300 seconds
3. 900 seconds
4. 1800 seconds

Correct Answer: 1. 630 seconds

Explanation:

Cisco ACI uses a default bounce entry aging interval of 630 seconds. A bounce entry is created when the fabric learns that an endpoint has moved from one leaf switch to another. The previous leaf retains temporary forwarding information pointing toward the new endpoint location so traffic can continue to reach the moved endpoint during convergence. Cisco uses a separate timer for these entries because they are transitional forwarding records rather than ordinary local or remote endpoint entries. The value can be adjusted through the endpoint retention policy when specific mobility requirements justify different behavior.

Question 311. Where is remote IP endpoint aging configured in ACI

1. Spine policy
2. Bridge domain subnet
3. Interface profile
4. VRF endpoint retention policy

Correct Answer: 4. VRF endpoint retention policy

Explanation:

Cisco ACI configures remote IP endpoint aging through the endpoint retention policy associated with the VRF. This differs from several MAC aging settings that are controlled at the bridge domain level. Cisco separates the configuration because remote IP endpoint information belongs to the Layer 3 routing context represented by the VRF. The endpoint retention policy includes several timers, such as remote endpoint aging and bounce entry aging. Designers troubleshooting stale endpoint information should therefore identify whether the affected entry is local, remote, MAC based, or IP based before changing retention timers.

Question 312. Where is local MAC endpoint aging configured in ACI

1. Spine loopback
2. Border leaf L3Out
3. Bridge domain endpoint retention policy
4. APIC cluster policy

Correct Answer: 3. Bridge domain endpoint retention policy

Explanation:

Local MAC endpoint aging is configured through the endpoint retention policy associated with the bridge domain. Cisco uses the local endpoint aging interval to determine how long a leaf retains local MAC and local IP information without receiving updates. The default local aging interval is 900 seconds when the common tenant policy applies. Separating local endpoint aging from remote IP aging allows the fabric to tune different types of endpoint information independently. Designers should modify these timers only when there is a clear operational requirement because aggressive values can increase endpoint relearning activity across the fabric.

Question 313. When does ACI create a bounce entry

1. When an endpoint moves to another leaf
2. When a spine reboots
3. When an APIC user logs in
4. When a contract is deleted

Correct Answer: 1. When an endpoint moves to another leaf

Explanation:

Cisco ACI creates a bounce entry on the previous leaf when COOP reports that an endpoint has moved to a different leaf switch. The old local endpoint entry is removed and replaced by temporary information pointing toward the endpoint’s new location. This assists forwarding while the fabric converges on the new endpoint attachment point. Cisco distinguishes bounce entries from normal remote endpoint entries because the encapsulation behavior differs in ways that help preserve correct data plane learning. Bounce entries eventually age according to the configured bounce aging interval, which is 630 seconds by default.

Question 314. Which is an example of ACI dataplane endpoint learning

1. APIC configuration import
2. Contract deployment
3. COOP route reflection only
4. Learning an endpoint from a routed packet it sends

Correct Answer: 4. Learning an endpoint from a routed packet it sends

Explanation:

Cisco ACI can learn endpoint information through both control plane and data plane mechanisms. An example of data plane learning occurs when an endpoint sends traffic that is routed by the fabric and the leaf learns the endpoint IP information from that packet. A control plane learning example is learning from an ARP packet directed toward the bridge domain gateway address. Using several learning mechanisms allows ACI to build and maintain its endpoint database dynamically as workloads communicate and move. Accurate endpoint learning is fundamental because fabric forwarding decisions depend heavily on knowing the current location of each endpoint.

Question 315. Which UCS X Series power design helps reduce conversion losses

1. 12 volt external battery
2. 54 volt DC power delivery
3. Fibre Channel power delivery
4. PoE power delivery

Correct Answer: 2. 54 volt DC power delivery

Explanation:

Cisco UCS X Series uses a 54 volt DC power delivery architecture designed to reduce internal power conversion stages, copper requirements, and electrical losses. Cisco combines this design with high efficiency modular power supplies to improve overall power efficiency. Higher voltage distribution can carry the required power with lower current, which reduces resistive loss and the amount of copper needed inside the system. These characteristics are increasingly important as AI and GPU workloads increase rack power density. Operational sustainability is explicitly included in the current 300 610 exam blueprint, making power efficient infrastructure design relevant to data center architects.

Question 316. What is the goal of UCS X Series zone based cooling

1. Cool only one rack permanently
2. Disable chassis fans
3. Focus cooling where components need it
4. Route storage traffic

Correct Answer: 3. Focus cooling where components need it

Explanation:

Zone based cooling allows the UCS X Series to direct cooling effort toward components that need greater thermal handling instead of operating every cooling resource at the same level continuously. Cisco combines this approach with modular counter rotating fans and thermal algorithms that adjust fan behavior according to system conditions. Reducing unnecessary fan speed can lower power consumption while still maintaining required component temperatures. This becomes increasingly valuable in high density compute and AI environments where cooling can represent a significant part of the total data center energy requirement.

Question 317. What is a benefit of the UCS X Series midplane free chassis design

1. It removes all network adapters
2. It forces fixed I O technology
3. It disables future expansion
4. Fabric technology can evolve independently

Correct Answer: 4. Fabric technology can evolve independently

Explanation:

The UCS X Series chassis uses a midplane free architecture that allows fabric technologies to evolve without requiring replacement of a fixed traditional electrical midplane. Cisco states that either fabric can be independently upgraded as new networking and input output technology becomes available. This improves platform longevity and helps organizations reuse the chassis across several technology generations. Longer hardware life can contribute to operational sustainability because fewer chassis components need to be discarded when networking, accelerator, or peripheral requirements change. The modular architecture also supports new resource nodes and fabric capabilities as they become available.

Question 318. Which UCS X Series feature can reduce duplicated chassis power hardware

1. Shared power supplies
2. Separate PSU per compute node
3. External GPU batteries
4. Fibre Channel power cables

Correct Answer: 1. Shared power supplies

Explanation:

Cisco UCS X Series uses shared chassis power supplies rather than requiring a dedicated power supply arrangement for every compute node. Sharing power infrastructure can reduce duplicated hardware and improve utilization of installed power capacity across the modular system. Cisco cites shared power supplies together with zoned cooling and high voltage power distribution as features that can reduce resource consumption. Modular infrastructure can also lower cabling and material usage compared with deploying many independent rack servers. These characteristics support operational sustainability objectives while still allowing high density compute and AI workloads to run within the same chassis architecture.

Question 319. What form does an Intersight resource tag use

1. Routing protocol and metric
2. VSAN and domain ID
3. Key and value metadata
4. MAC and subnet mask

Correct Answer: 3. Key and value metadata

Explanation:

Cisco Intersight resource tags are generic key and value metadata attached to supported resources. Tags allow administrators or automation systems to describe resources according to characteristics such as environment, application, owner, location, or operational purpose. Because tags are metadata rather than fixed infrastructure configuration, they provide a flexible mechanism for organizing objects without changing their underlying server or networking settings. Cisco documents tags across several Intersight resource types and supports using tag information through the user interface and APIs. This can make large compute environments easier to search, classify, and automate.

Question 320. What is a primary operational use of Intersight resource tags

1. Build Fibre Channel links
2. Group and query related resources
3. Increase GPU clock speed
4. Replace server profiles

Correct Answer: 2. Group and query related resources

Explanation:

Intersight resource tags allow administrators and applications to group resources logically and query them according to key and value metadata. For example, tags can distinguish development and production servers or identify systems belonging to a particular application. This becomes valuable as the number of managed compute resources grows because operations teams can locate related objects without depending only on hardware names or physical locations. Cisco also uses resource tags with certain programs and automation capabilities. Tags therefore provide an organizational layer that can support filtering, reporting, governance, and automated workflows across the Intersight managed environment.