300-620復習資料、300-620問題集商品を購入するとき、信頼できる会社を選ぶことができます。我々JPTestKingはCiscoの300-620試験の最高の通過率を保証してCiscoの300-620ソフトの無料のデモと一年間の無料更新を承諾します。あなたに安心させるために、我々はあなたがCiscoの300-620試験に失敗したら全額で返金するのを保証します。JPTestKingはあなたのCiscoの300-620試験を準備する間あなたの最もよい友達です。 Cisco Implementing Cisco Application Centric Infrastructure 認定 300-620 試験問題 (Q273-Q278):質問 # 273
When Layer 3 routed traffic is destined to a Cisco ACI fabric, which mechanism does ACI use to detect silent hosts?
A. proxy ARP
B. ARP gleaning
C. inverse ARP
D. gratuitous ARP
正解：B
質問 # 274
Refer to the exhibit. A company deployed Cisco ACI and plans to migrate the first servers to the Cisco ACI fabric. The current network setup experiences a small number of silent hosts. What is the Cisco recommended bridge domain configuration to support the network topology presented?
A. ARP Flooding: Disabled
L3 Unknown Multicast Flooding: Flood
B. Unicast Routing: Disabled
L2 Unknown Unicast: Flood
C. ARP Flooding: Enabled
Multi Destination Flooding: Flood in BD
D. Unicast Routing: Enabled
L2 Unknown Unicast: Hw Proxy
正解：D
解説：
When you extend an existing L3-switched network into ACI and keep the original SVI as the gateway, enabling Unicast Routing on the bridge domain lets the fabric advertise its host routes back to that SVI. Setting L2 Unknown Unicast to HW Proxy ensures the spine/leaf fabric will proxy ARP and unknown-unicast MAC requests for those migrated servers so that "silent" hosts are reachable without flooding.
質問 # 275
Refer to the exhibit. A network engineer must configure a Cisco ACI fabric for the External Bridged network to communicate with L3Out. Which action accomplishes this goal?
A. Consume Test_Contract-DB-APP from Presentation.
B. Provide Test_Contract-DB-APP to MSPKAL.
C. Consume Test_Contract-APP-WEB from CCDM_EPG.
D. Provide Test_Contract-APP-WEB to MSP_EPG.
正解：C
解説：
The external-bridged EPG (CCDM_EPG) isn't currently part of the Test_Contract-APP-WEB topology - only the Test-APP-EPG and the L3Out EPG (MSP_EPG) are. To let the bridged network speak out the L3Out, you simply add CCDM_EPG as a consumer of the existing APP- WEB contract so that traffic can be allowed from the external bridge into the L3Out.
質問 # 276
Refer to the exhibit.
Refer to the exhibit. An engineer configures communication between the EPGs in different tenants. Which action should be taken to create the subnet?
A. Change Scope to Advertised Externally.
B. Change Scope to Shared between VRFs.
C. Add the L3Out for Route Profile value.
D. Leave Scope set to Private to VRF.
正解：B
解説：
To configure communication between the EPGs in different tenants, the subnet scope should be set to "Shared between VRFs". This allows the subnet to be shared across different VRFs, enabling communication between EPGs that are in different tenants but within the same VRF. By marking the subnet as shared, it becomes visible to other VRFs, which is necessary for inter-tenant communication1.
Reference:
Learning ACI - Part 12: Inter-VRF and Inter-Tenant Communication
質問 # 277
A bridge domain for a new endpoint group in the Cisco ACI fabric must meet these requirements:
The bridge domain must function as the default gateway for the subnet so that routing remains within the Cisco ACI fabric.
ARP requests must be managed via Layer 3 unicast packets or be dropped to reduce excessive broadcast traffic.
The impact of misconfigured virtual machines must be kept to a minimum by preventing IP addresses outside of the configured subnet from being routed.
Which set of actions must be taken?
A. Enable Limit IP Learning to Subnet.
Enable Unicast Routing on the bridge domain and configure a subnet.
Set Multi-Destination Flooding to Flood in BD.
B. Enable Unicast Routing on the bridge domain and configure a subnet.
Set L2 Unknown Unicast to Flood.
Disable Endpoint Retention Policy.
C. Disable ARP Flooding.
Enable Limit IP Learning to Subnet.
Enable Unicast Routing on the bridge domain and configure a subnet.
D. Set Endpoint Retention Policy to default.
Enable ARP Flooding.
Enable Unicast Routing on the bridge domain and configure a subnet.
