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Prepare 300-630 Exam Questions [2024] Recently Updated Questions
NEW QUESTION # 20
A host that is connected to a Cisco ACI fabric leaf switch sends an ARP request. Which transmission method does the ingress switch use to send the ARP requests?
- A. multicast
- B. unicast
- C. broadcast
- D. anycast
Answer: C
Explanation:
When a host connected to a Cisco ACI fabric leaf switch sends an ARP request, the ingress leaf switch uses a broadcast transmission method to send the ARP requests. This is because ARP requests are meant to discover the MAC address associated with a specific IP address within the same network broadcast domain. The ingress leaf switch does not know the destination MAC address, so it broadcasts the ARP request to all devices within the broadcast domain1.
References := ( Implementing Cisco Application Centric Infrastructure Official Cert Guide )
NEW QUESTION # 21
Drag and Drop Question
An engineer must migrate servers from a legacy data center infrastructure to a Cisco ACI fabric.
Drag and drop the steps from the left into the order that they must be completed on the right to ensure the least amount of downtime.
Answer:
Explanation:
NEW QUESTION # 22
How does Cisco ACI manage the STP BPDUs between two pods?
- A. BPDUs are forwarded over IPN using the bridge domain GIPo multicast address
- B. Cisco ACI spines suppress STP BPDUs to be forwarded to other pods
- C. Special multicast group 239.255.255.255 is used to forward STP BPDUs
- D. Cisco ACI spines perform ingress replication for STP BPDUs
Answer: B
Explanation:
In Cisco ACI, the spines suppress STP BPDUs to prevent them from being forwarded to other pods. This behavior ensures that the ACI fabric operates efficiently without relying on STP for loop prevention.
References := Cisco APIC Layer 2 Networking Configuration Guide, Release 5.2(x)
NEW QUESTION # 23
Refer to the exhibits.
Which subject must be configured for the All_noSSH contract to allow all IP traffic except SSH between the two EPGs?
- A. Option B
- B. Option D
- C. Option A
- D. Option C
Answer: B
NEW QUESTION # 24
A host that is connected to a Cisco ACI fabric leaf switch sends an ARP request. Which transmission method does the ingress switch use to send the ARP requests?
- A. broadcast
- B. multicast
- C. anycast
- D. unicast
Answer: D
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/dcn/whitepapers/cisco-application-centric-infrastructure-design- guide.html
NEW QUESTION # 25
Which approach does Cisco ACI use to achieve multidestination packet forwarding between leaf switches in the same fabric?
- A. Map VXLAN to PIM-SM protocol
- B. Map VXLAN VTEP to the multicast group
- C. Map VXLAN to PIM-DM protocol
- D. Map VXLAN VNI to the multicast group
Answer: D
NEW QUESTION # 26
Refer to the exhibit. The requirement is to prefer the local PBR node and redirect the traffic to the remote pod PBR node in the case of catastrophic node failure. Which configuration meets these requirements?
- A. symmetric PBR
unidirectional PBR
resilient hashing - B. location-based PBR
host route advertisement
resilient hashing - C. location-based PBR
host route advertisement
node tracking - D. symmetric PBR
location-based PBR
resilient hashing
Answer: C
NEW QUESTION # 27
An organization expands a Cisco ACI Multi-Pod from two to six pods and must ensure that the control plane scales. What should be configured in the IPN to ensure that BUM traffic is forwarded efficiently across the IPN?
- A. MP-BGP
- B. BIDIR-PIM
- C. spine headend replication
- D. MSDP
Answer: B
NEW QUESTION # 28
A leaf receives unicast traffic that is destined to an unknown source, and spine proxy is enabled in the corresponding bridge domain. Drag and drop the Cisco ACI forwarding operations from the left into the order the operation occurs on the right.
Answer:
Explanation:
NEW QUESTION # 29
An engineer configures a new Cisco ACI Multi-Pod setup. Which action should be taken for fabric discovery to be successful for the nodes in Pod 2?
- A. Add the IPN subnet under the Fabric External Routing Profile
- B. Select the Route Reflector field in Pod Peering
- C. Configure POD 2 Data Plane TEP under the Pod Connection Profile
- D. Enable the DSCP class-cos translation policy for Layer 3 traffic
Answer: A
NEW QUESTION # 30
Which action reduces the impact on workload when migrating from the existing Cisco NX-OS VXLAN network infrastructure to the Cisco ACI fabric?
- A. Configure vPC between the standalone Nexus and the Cisco ACI leaf
- B. Disable bridge domain unicast routing while a default gateway is in VXLAN infrastructure
- C. Use ACI spines for the Cisco ACI and VXLAN fabrics
- D. Set the default gateway in the Cisco ACI and VXLAN fabrics
Answer: B
Explanation:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/migration_guides/migratin g_existing_networks_to_aci.html#_Toc27467765
NEW QUESTION # 31
A packet is routed between two endpoints on different Cisco ACI leaf switches. Which VXLAN VNID is applied to the packet?
- A. FD
- B. VRF
- C. BD
- D. EPG
Answer: B
Explanation:
When a packet is routed between two endpoints on different Cisco ACI leaf switches, the VXLAN VNID applied to the packet is the VRF (Virtual Routing and Forwarding) VNID. This VNID enables forwarding of the packet through tenant virtual routing and forwarding domains within the fabric34.
References := Cisco APIC Layer 3 Networking Configuration Guide, Release 3.x and later
NEW QUESTION # 32
An engineer configures Cisco ACI Multi-Site and must specify the control plane TEP IP for spines. Which statement describes control plane TEP IP in this situation?
- A. The common anycast address is shared by all the spine nodes in the same site and is used to perform headend replication for BUM traffic.
- B. The unique IP address is defined on each spine node that belongs to a fabric and is used to establish MP-BGP EVPN and VPNv4 adjacencies with the spine nodes in remote sites.
- C. The unique IP address is defined on each spine node that belongs to a fabric and is used to establish VXLAN adjacencies with the spine nodes in remote sites.
- D. The common anycast address is shared by all the spine nodes at the same site and is used lo source and receive unicast VXLAN data plane traffic.
Answer: B
NEW QUESTION # 33
Refer to the exhibit. What must be configured in the service graph to redirect HTTP traffic between the EPG client and EPG server to go through the Cisco ASA firewall?
- A. contract filter to allow ARP and HTTP
- B. contract with no filter
- C. precise filter to allow only HTTP traffic
- D. permit-all contract filter
Answer: C
NEW QUESTION # 34
Refer to the exhibit. An engineer must have communication between EPG1 in VRF1 and External EPG in VRF2. Which three actions should be taken for the defined subnets in the L3Out External EPG to accomplish this goal? (Choose three.)
- A. Enable Export Route Control Subnet
- B. Enable Aggregate Shared Routes
- C. Enable Import Route Control Subnet
- D. Enable Shared Security Import Subnet
- E. Enable Shared Route Control Subnet
- F. Enable External Subnets for External EPG
Answer: D,E,F
Explanation:
https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric- infrastructure/guide-c07-743150.html
NEW QUESTION # 35
Refer to the exhibit.
Which feature is available across sites if EPGs are stretched?
- A. Layer 3 routing between sites
- B. live virtual machine migration
- C. active-active high-availability firewall clustering
- D. Layer 2 flooding across sites
Answer: A
NEW QUESTION # 36
An organization expands a Cisco ACI Multi-Pod from two to six pods and must ensure that the control plane scales. What should be configured in the IPN to ensure that BUM traffic is forwarded efficiently across the IPN?
- A. BIDIR-PIM
- B. MP-BGP
- C. spine headend replication
- D. MSDP
Answer: C
Explanation:
In a Cisco ACI Multi-Pod environment that is expanding, spine headend replication should be configured to ensure efficient forwarding of BUM (Broadcast, Unknown unicast, Multicast) traffic across the IPN (Inter-Pod Network). This configuration optimizes the control plane scaling and ensures that BUM traffic is handled effectively, maintaining network performance and stability.
References: Implementing Cisco Application Centric Infrastructure Official Cert Guide
NEW QUESTION # 37
How is broadcast forwarded in Cisco ACI Multi-Pod after ARP flooding is enabled?
- A. Broadcast frames are forwarded inside the pod and across the IPN using the multicast address that is associated to the bridge domain
- B. Ingress replication is used on the spines to forward broadcast frames in the IPN infrastructure
- C. Within a pod, the ingress leaf switch floods the broadcast frame on all fabric ports
- D. For the specific bridge domain, all spines forward the broadcast frames to IPN routers
Answer: A
NEW QUESTION # 38
Refer to the exhibit.
An engineer must have communication between EPG1 in VRF1 and External EPG in VRF2. Which three actions should be taken for the defined subnets in the L3Out External EPG to accomplish this goal? (Choose three.)
- A. Enable Aggregate Shared Routes
- B. Enable Shared Security Import Subnet
- C. Enable Export Route Control Subnet
- D. Enable External Subnets for External EPG
- E. Enable Import Route Control Subnet
- F. Enable Shared Route Control Subnet
Answer: B,C,E
NEW QUESTION # 39
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