300-615 DCIT Troubleshooting Cisco Data Center Infrastructure
Update：2026年3月14日
Questions and Answers: 167 Q&A
1.
An engineer is implementing a new BGP peering in their new data center. The engineer set up the BGP session that peers with the remote end. As soon as the BGP peers attempt to exchange routing prefixes, one of the BGP peers drops the connection. After reviewing the configuration, the engineer reviews the logging messages. The engineer discovers that the router is missing keepalives from the remote end and terminates the session. Which action resolves the issue?
2.
A client configures an upgrade of its Cisco Nexus switches that are connected to the Cisco ACI controller, such that the switches are upgraded one at a time. After the upgrade is run, it is discovered that both Cisco Nexus switches were upgraded simultaneously. Which two actions ensure that the switches upgrade one at a time? (Choose two.)
3.
A network engineer traces the packet flow from the Veth991 of a blade server toward the core switch. The switch reports performance issues. What is the role of the interface Eth1/7?
4.
A network administrator attempts to install an application in the Cisco NX-OS Guest shell and receives an error that there is not enough space on the disk. Which command must the administrator run to increase the disk space available in the Guest shell?
5.
A network engineer is implementing a Cisco UCS environment. The environment consists of eight servers configured with the same service profile template and Windows 2012 installed. The VFC interfaces of five of these servers are showing the error shown in the exhibit. Which action resolves the issue?
6.
A system administrator adds two vNICs to an existing service profile that is used to run a vSphere environment to support disjoint Layer 2 network connectivity. However, after the server is rebooted, the host is not accessible on the network Which action resolves the issue?
7.
A network engineer is troubleshooting a Cisco Nexus 5000 Series Switch. The interface between the server and the switch is nonoperational and is expected to operate at 10 Gbps. The drain rate of the interface is 3 Mbps. Which action resolves the issue?
8.
The scheduler job fails to run. Which action resolves the issue?
9.
Interface fc1/5 is offline. Which action should be taken to troubleshoot the issue?
10.
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.)
11.
An engineer is troubleshooting a fabric discovery failure. Which two requirements must an engineer verify about switch connectivity to solve the problem? (Choose two.)
12.
A blade that is connected to FI-B fails to boot from a SAN LUN. The boot policy is configured to boot by using vHBA1 as the SAN Primary. Which set of actions resolves the issue?
13.
A network engineer creates an EEM script to trigger an SNMP notification when a user enters configuration mode, but the trap is not received when the condition is met. Which action resolves the issue?
event manager applet ConfigNotifier
event cli match "conf t"
action 1.0 snmp-trap strdata "Configuration change"
14.
An engineer troubleshoots the HSRP configuration and notes that the remote end uses HSRP version 1. The engineer sets the local HSRP to version 1, but the problem continues. Which action resolves the issue?
15.
The EEM script is applied in the default VDC to collect the outputs during high CPU utilization on the Cisco Nexus 7000 Series Switch for all VDCs. Which configuration set must be added to the script to fix the issue?
16.
UCS- 1 fails to connect to the storage array. Which action resolves the issue?
17.
A network engineer notices packet drops on FCoE traffic from the servers. Which action resolves the issue?
18.
A network engineer is implementing a pair of Cisco Nexus 9000 Series Switches. During the OSPF configuration, the engineer discovers unstable routing in the network. The investigation shows flapping routes after the new switches were introduced. Which set of actions resolves the issue?
19.
An attempt to use a global vNIC redundancy template pair results in a service profile that fails to apply. Which action resolves the issues?
20.
An engineer is implementing a storage VDC, but fails. Which two prerequisites must be in place before a storage VDC is implemented? (Choose two.)
21.
A fabric interconnect fails to start and the console displays the loader prompt. Which two actions resolve the issue? (Choose two.)
22.
An engineer must save the running configuration to startup-config and generate a syslog message indicating that the configuration was modified, but an error was received. Which action resolves the issue?
23.
RBAC is configured on the MDS switch for a new SAN administrator engineer to work on the FSPF configuration. However, after the configuration is applied the engineer who was assigned the FSPF_Admin role cannot perform any configuration changes. Which action resolves the issue?
MDS-Core(config)#role name FSPF_Admin
MDS-Core(config-role)#rule 1 deny config
MDS-Core(config-role)#rule 2 permit config feature fspf
24.
An engineer must upgrade all components in a Cisco UCS domain to the same package version, but the upgrade process fails to complete. Which set of Auto Install actions resolves the problem?
25.
An engineer attempts to register Cisco UCS Manager to Cisco UCS Central, but the registration fails. The engineer can ping Cisco UCS Central from UCS Manager. Which two actions must the engineer attempt to resolve the problem? (Choose two.)
26.
HSRP adjacency fails to form between Nexus7K-1 and Nexus7K-2. Which action should be taken to solve the problem?
27.
An engineer must replace a failed memory on a Cisco UCS B-Series Blade Server. After the replacement was done, the server has a “resolve slot” warning. Which server maintenance action resolves the issue?
28.
A customer network uses OSPFv2 and MP-BGP protocols A network administrator installs a new Cisco Nexus Switch in the data center but experiences a BGP RIB failure Which action solves the issue?
29.
Your client reports that many flaps and server cluster disconnects occur in their data center. While troubleshooting the issue, you discover a network attack hitting their Cisco Nexus 7000 Series Switches and determine that the source IP addresses are spoofed. Which first-line security solution resolves this issue?
30.
The EEM script overrides all events in the system policy. What should be added to the script to resolve the issue?
event manager applet looback_online override-BootupPortLoopback
action 1 syslog priority notifications msg "Switch Online"
action 2 policy-default
31.
After an unexpected reload of the Cisco Nexus 9000 Series Switch, the network administrator noticed that one of the Software Maintenance Upgrades (SMU) images is inactive. The engineer must ensure that the package remains active after the switch is reloaded in the future. Which action accomplishes this goal?
32.
A new Cisco Nexus 5548 Switch connects to a network. SAN switching is configured on the switch. The switch fc2/10 NP uplink is shown in the exhibit. Which action ensures that fc2/10 is in an up state?
33.
The VXL AN fabric is deployed with this configuration:
The VL AN 50 interface has no IP address on VTEP1 and VTEP4
The VLAN 100 interface has no IP address on VTEP2 and VTEP3.
nve1 interface is configured on all VTEPs.
Host A experiences timeouts when attempting to ping host B. Which set of actions allows host A to
reach host B7
34.
An Engineer cannot log in to the Cisco IMC page of the Cisco UCS C220 server. Which action resolve the issue?
35.
The vPC between switch1 and switch2 does not work. Which two actions resolve the problem? (Choose two.)
37.
The expected routes are not being leaked as expected from VRF RED to VRF BLUE. Which action resolves the issue?
38.
An upgrade operation fails with an error displayed. Which action resolve the issue?
39.
VSAN traffic is not routed as expected. Which action should be taken to resolve the issue?
40.
A network administrator must provide Bash shell access to the support team for all of the Cisco Nexus 9000 Series Switches. The newly created user that is named "bashusers" fails to access the Bash shell. Which action resolves the issue?
41.
The vPC neighborship between two switches is in suspended state. Which configuration change resolves the issue and brings up the vPC neighborship?
42.
An engineer discovered a VFC interface in a down state on a Cisco Nexus Switch. Which action resolves the problem?
43.
An engineer monitors a Cisco UCS server logs and discovers a blade discovery issue. Which procedure resolves the issue?
44.
An engineer is implementing, Fibre Channel (FC) switching on a Cisco 9000 Series Switch, but the procedure fails with the message "FC traffic is not being routed through the fabric.". Which action resolves the issue?
45.
A network administrator must delete a feature group from a Cisco Nexus 5000 Series Switch. Which action resolves the issue?
46.
During a boot process of a Cisco UCS C-Series Rack Server, an engineer receives a "No Signal" message from the vKVM and physical connection. Which set of steps resolves the issue?
47.
The job fails to run. Which action resolves the issue?
48.
customer reports that all Intra-EPG isolation stopped working within a bare-metal tenant. Postman is running on a machine to get information from the APIC in case of orchestration failure. Which action resolves the issue?.
49.
An engineer is configuring boot from iSCSI on a Cisco UCS B-Series Blade Server, but the LUN fails to mount. Which action resolves the issue?
50.
You have an ACI environment with three APICs, two spine switches, and four-leaf switches. You wipe and reboot all APICs first then leaf and spine switches one-by-one and successfully go through the Initial Setuo dialogue on the APIC 1 CIMC KVM console. When you log in to the APIC1 WebGUI, you notice that you do not see any directly connected leaf switches being discovered under Fabric > Inventory > Fabric Membership. What is the cause of the issue?
51.
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.)
52.
An administrator directly connects a Fibre Channel storage array to ports 1 through 4 on a Cisco UCS 6454 Fabric Interconnect. The administrator configures a service profile to boot directly from the new Fibre Channel storage array, but the service profile fails to boot. When the administrator checks the output of the show flogi database command on the fabric interconnect, it shows the output presented in the exhibit. Which action resolves the issue?
53.
An engineer must place a Cisco UCS B-Series Server in a single server pool in Cisco UCS Manager. The engineer creates a qualification policy, but the server is still seen in multiple pools. Which two actions resolve the issue? (Choose two.)
54.
An upgrade of protected RPMs from the Bash shell did not take effect. Which action is required for the changes to take effect?
55.
A network engineer upgrades the firmware of a Cisco Fabric Interconnect from boot flash. During the process, the fabric interconnect reboots and displays the message shown in the exhibit. Which action resolves the issue?
56.
A Fibre Channel interface on a Cisco Nexus 5000 Series Switch receives bit errors, and the switch disables the interface. A temporary workaround must be implemented before the root cause is identified. Which action does an engineer take to prevent this issue from reoccurring?
57.
The HSRP configuration in the exhibit fails to function. Which action resolves this issue?
58.
A server fails to boot from the operating system after a RAID1 cluster migration. The RAID remains in an inactive state during and after a service profile association. Which action resolves the issue?
59.
A network engineer configures an authentication domain through an LDAP provider on the Cisco UCS Manager for users from different companies to log into their respective organizations created in the UCS Manager. The engineer tests the configuration and notices that any user has login access to any organization in the UCS Manager. Which action should be taken to resolve the issue?
60.
One of Cisco Nexus Series interfaces has become errdisabled with the error message “DCX-No ACK in 100 PDUs”. What is the cause of this error?
61.
After upgrading a client’s fabric interconnect to the latest version, an engineer discovers that the appliance has lost its entire configuration. Which two locations should an engineer check to confirm that the appliance had backed up the configuration prior to the upgrade in order to retrieve the lost configuration? (Choose two.)
