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Cisco 600-660 Online Exam Practice Questions
QUESTION 1
A network engineer configured an active-active firewall cluster that is stretched across separate pods in the Cisco ACI
fabric. Which two implementation setups for anycast services are available? (Choose two.)
A. Modify the Cisco ACI contract scope
B. Modify the MAC address on the second firewall
C. Configure the firewalls behind an EPG subnet
D. Deselect No Default SVI Gateway under EPG Subnet
E. Deploy a Layer 4 to Layer 7 service graph with PBR
Correct Answer: BC
QUESTION 2
Which two actions should be taken to ensure a scalable solution when multiple EPGs in a VRF require unrestricted
communication? (Choose two.)
A. Configure a taboo contract between the EPGs that require unrestricted communication between each other.
B. Enable Preferred Group Member under the EPG Collection for VRF section.
C. Set the VRF policy control enforcement preference to Unenforced.
D. Set the EPGs that require unrestricted communication between each other as preferred group members.
E. Set the EPGs that require policy enforcement between each other as preferred group members.
Correct Answer: CD
Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/basic-configuration/Cisco-APICBasic-Configuration-Guide-42x/Cisco-APIC-Basic-Configuration-Guide-42x_chapter_0110.html
QUESTION 3
Refer to the exhibit. Two application profiles are configured in the same tenant and different VRFs. Which contract the scope is configured to allow communication between the two application profiles?
A. global
B. VRF
C. application
D. tenant
Correct Answer: D
Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/1-x/Operating_ACI/guide/b_Cisco_Operating_ACI/b_Cisco_Operating_ACI_chapter_01000.html
QUESTION 4
What are the two characteristics of Cisco ACI interaction with MSTP? (Choose two.)
A. A Cisco ACI leaf flushes all local endpoints in the received EPG when an MSTP TCN frame is received.
B. A static path binding is required for native VLAN to carry the MST BPDUs in existing EPGs.
C. Mis-cabling protocol is used to snoop the MSTP TCN packets.
D. A dedicated EPG must be created for the native VLAN ID with static bindings toward the MSTP-enabled switches.
E. The PVST simulation must be configured on external network switches to support MSTP.
Correct Answer: CD
QUESTION 5
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. Select the Route Reflector field in Pod Peering
B. Enable the DSCP class-cos translation policy for Layer 3 traffic
C. Configure POD 2 Data Plane TEP under the Pod Connection Profile
D. Add the IPN subnet under the Fabric External Routing Profile
Correct Answer: D
QUESTION 6
An organization migrates its virtualized servers from a legacy environment to Cisco ACI. VM1 is incorrectly attached to
PortGroup IT|3TierApp|Web. Which action limits IP address learning in BD1?
A. Enable Enforce Subnet Check
B. Enable Rouge Endpoint Control
C. Enable GARP-based EP Move Detection Mode
D. Disable Remote EP Learn
Correct Answer: C
QUESTION 7
Refer to the exhibit. Which configuration mode must be selected for the VMM vSwitch Port Channel policy to avoid MAC
flapping on the Cisco UCS Fls and Cisco ACI leaf switches?
A. LACP Passive
B. MAC Pinning
C. LACP Active
D. Static Channel?Mode On
Correct Answer: B
QUESTION 8
An engineer designers a Cisco ACI Multi-Pod solution that requires a pair of active-standby firewalls in different pods for
external connectivity. How should the firewalls be implemented?
A. PBR for routed firewalls
B. separate L3Out peerings for routed firewalls
C. routed firewall for the default gateway
D. transparent firewalls
Correct Answer: D
Reference: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centricinfrastructure/white-paper-c11-739571.html
QUESTION 9
What does the VXLAN source port add to the overlay packet forwarding when it uses the hash of Layer 2, Layer 3, and
Layer 4 headers of the inner packet?
A. ECMP
B. TCP optimization
C. disabled fragmentation
D. jumbo frames
Correct Answer: A
Reference: https://www.cisco.com/c/en/us/support/docs/lan-switching/vlan/212682-virtual-extensible-lan-and-ethernetvirt.html
QUESTION 10
Refer to the exhibit. Which feature is available across sites if EPGs are stretched?
A. active-active high-availability firewall clustering
B. Layer 3 routing between sites
C. Layer 2 flooding across sites
D. live virtual machine migration
Correct Answer: B
Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/aci_multisite/sw/1x/fundamentals/b_Cisco_ACI_Multi-Site_Fundamentals/b_ACI_Multi-Zone_Fundamentals_chapter_01.pdf (6)
QUESTION 11
Refer to the exhibit. A customer experiences resource overconsumption on one of its border leaf switches. Which action
should be taken to reduce the consumption on this switch?
A. Disable VRF Policy Control Enforcement
B. Disable IP Data Plane Learning
C. Migrate L3Outs to another switch
D. Disable Remote EP Learning
Correct Answer: B
QUESTION 12
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. precise filter to allow only HTTP traffic
C. contract with no filter
D. permit-all contract filter
Correct Answer: A
QUESTION 13
Refer to the exhibit. Which two configuration steps are required in ISN for the Cisco ACI Multi-Site setup? (Choose two.)
A. Connect Spine2 to ISN routers.
B. Configure BIDIR-PIM throughout the ISN
C. Increase ISN MTU to support the maximum MTU that is sent by endpoints
D. Configure OSPF between spines and ISN routers
E. Enable IGMPv3 on ISN routers
Correct Answer: DE
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