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300-615 Troubleshooting Cisco Data Center Infrastructure (300-615 DCIT) Exam

January 11, 2021 by admin

Exam overview
This exam tests your knowledge of troubleshooting a data center infrastructure, including:

Network
Compute platforms
Storage network
Automation
Management and operations

Exam preparation
Troubleshooting Cisco Data Center Infrastructure (DCIT)

Exam Description
The Troubleshooting Cisco Data Center Infrastructure v1.0 (DCIT 300-615) exam is a 90-minute exam associated with the CCNP Data Center and Cisco Certified Specialist – Data Center Operations certifications. This exam certifies a candidate’s knowledge of troubleshooting a data center infrastructure including network, compute platforms, storage network, automation, management and operations. The course, Troubleshooting Cisco Data Center Infrastructure, helps candidates to prepare for this exam.

The following topics are general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. To better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

1.1 Troubleshoot routing protocols
1.1.a OSPFv2, OSPFv3
1.1.b MP-BGP
1.1.c PIM
1.1.d FHRP (HSRP, VRRP)

1.2 Troubleshoot switching protocols, such as RSTP+, LACP, and vPC

1.3 Troubleshoot overlay protocols, such as VXLAN EVPN and OTV

1.4 Troubleshoot Application Centric Infrastructure
1.4.a Fabric discovery
1.4.b Access policies
1.4.c VMM domain integration
1.4.d Tenant policies
1.4.e Packet flow (unicast, multicast, and broadcast)
1.4.f External connectivity

2.1 Troubleshoot Cisco Unified Computing System rack servers

2.2 Troubleshoot Cisco Unified Computing System blade chassis
2.2.a Infrastructure such as chassis, power, IOM
2.2.b Network (VLANs, pools and policies, templates, QoS)
2.2.c Storage (SAN connectivity, FC zoning, VSANs, pools, policies, templates)
2.2.d Server pools and boot policies

2.3 Troubleshoot packet flow from server to the fabric

2.4 Troubleshoot hardware interoperability
2.4.a Converged Network Adapters / port expanders
2.4.b Firmware
2.4.c I/O modules / FEX
2.4.d Fabric interconnects

2.5 Troubleshoot firmware upgrades, packages, and interoperability

3.1 Troubleshoot Fibre Channel
3.1.a Switched fabric initialization
3.1.b Fibre Channel buffer credit starvation
3.1.c FCID
3.1.d Cisco Fabric Services
3.1.e Zoning
3.1.f Device alias
3.1.g NPV and NPIV
3.1.h VSAN

3.2 Troubleshoot FCoE Cisco Unified Fabric (FIP, DCB)

4.1 Troubleshoot automation and scripting tools
4.1.a EEM
4.1.b Scheduler

4.2 Troubleshoot programmability
4.2.a Bash shell and guest shell for NX-OS
4.2.b REST API
4.2.c JSON and XML encodings

5.1 Troubleshoot firmware upgrades, packages, and interoperability

5.2 Troubleshoot integration of centralized management

5.3 Troubleshooting network security
5.3.a Fabric binding and port security
5.3.b AAA and RBAC
5.3.c First-hop security such as dynamic ARP, DHCP snooping, and port security
5.3.d Troubleshoot CoPP

5.4 Troubleshoot ACI security domains and role mapping

5.5 Troubleshoot data center compute security
5.5.a Troubleshoot AAA and RBAC
5.5.b Troubleshoot key management

5.6 Troubleshoot storage security
5.6.a AAA and RBAC
5.6.b Port security
5.6.c Fabric binding

QUESTION 1
A vPC Type-1 inconsistency between two vPC peers in a VXLAN EVPN setup is discovered. Which two actions need to be attempted to resolve the issue? (Choose two.)

A. Configure the NVE interfaces to be Up on both switches.
B. Set a different distributed gateway virtual MAC address.
C. Set a different secondary IP addresses on NVE source-interface.
D. Configure the same VNI to multicast group maping.
E. Set a different primary IP addresses on NVE source-interface.

Correct Answer: AD

QUESTION 2
A mission-critical server is connected to site A. Connectivity to this server is lost from site B because the MAC
route is missing in the OTV VDC of the Cisco Nexus 7000 in site B due to MAC aging. Which action allows the
flooding of the unknown unicast MAC on the Nexus 7000 in the OTV VDC?

A. Use route map to statically advertise this MAC and redistribute with IS-IS.
B. Unknown unicast flooding is not allowed.
C. Use the otv flood mac <> command to selectively flood traffic for a given MAC.
D. Use the otv isis bfd <> command to configure BFD protocol.

Correct Answer: B

QUESTION 3
An engineer troubleshoots a fabric discovery failure. Which two requirements about switch connectivity must be verified to solve the problem? (Choose two.)

A. A Cisco APIC must be attached to a spine node only.
B. A Cisco APIC must be attached to leaf nodes.
C. Spine nodes must connect to other spine nodes.
D. A Cisco APIC must be dual-attached to two separate spine nodes.
E. Leaf nodes must connect to spine nodes only.

Correct Answer: BE

QUESTION 4
A customer configures HSRP between two data centers that are interconnected with OTV. The configuration
succeeds, but traffic between two ESXi virtual hosts on the same site is routed suboptimally through the OTV
overlay. Which two actions optimize the traffic? (Choose two.)

A. Disable first-hop redundancy.
B. Filter HSRP traffic by using a Layer 3 VACL on the OTV edge devices.
C. Filter HSRP by using a Layer 2 MAC list on the ESXi vSwitch.
D. Filter HSRP traffic by using a Layer 3 VACL on the ESXi vSwitch.
E. Filter HSRP by using a Layer 2 MAC list on the OTV edge devices.

Correct Answer: AB

QUESTION 5
An engineer removes a VMM domain from an endpoint group called “EPG-1”, but the distributed port group fails to be deleted. Which action resolves the issue?

A. Manually remove the port group.
B. Migrate all virtual machines in the EPG-1 to different hypervisors.
C. Remove the remaining EPGs from the VMM domain.
D. Migrate all virtual machines in the EPG-1 to different port groups.

Correct Answer: C

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