300-615 DCIT Troubleshooting Cisco Data Center Infrastructure
Update:2026年4月16日
Questions and Answers: 167 Q&A
1.
The administrator set up two pairs of Cisco Nexus switches. The administrator set dfferent vPC priorities on all four Nexus switches. As soon as the administrator activates the vPC between the two pairs the network faces different issues. The problems range from both Nexus pairs declare themselves as root bridge, as well as spanning-tree inconsistencies and traffic forwarding issues. Which action resolves these issues?
2.
The HSRP configuration in the exhibit fails to function. Which action resolves this issue?
3.
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.)
4.
A network engineer configures an EEM script to get a syslog notification after a configuration change. This message appears when the engineer must make a new configuration to this switch. Which configuration did the engineer neglect to apply in the script for it to function properly?
5.
An IOM fails during a firmware upgrade and is unresponsive. Which action recovers the module?
6.
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.)
7.
The vPC between switch1 and switch2 does not work. Which two actions resolve the problem? (Choose two.)
8.
The OTV overlay is deployed in multicast mode. After an unexpected reload of N7K-SITE1-OTV1, the network administrator observed that on N7K-SITE1-OTV2 the OTV site adjacency went into the partial state. Which action resolves the issue?
9.
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?
10.
A network engineer must use BGP to route IPv4 and IPv6 routes between R1 and R2. The IPv4 addresses are exchanged as expected between the routers through BGP. The routers have reached an Established BGP state. However, the IPv6 routes from R2 fail to show in the routing table of R1. Which action resolves the issue?
11.
A web browser displays a “not secure” warning message when accessing the web interface of Cisco UCS Manager. Which action resolves the issue?
12.
Drag and drop the commands from the left onto the correct categories on the right.
13.
An OSPF adjacency between Router-A and Router-B cannot reach the FULL state. Which action resolves the issue?
14.
When an engineer inserts 8-Gb FC SFP port 15 on a Cisco UCS Fabric Interconnect, the port fails. What is a possible cause of the issue?
15.
A functioning trunk port Ethernet1/48 exists between two identical Cisco Nexus 5000 Series Switches. The interfaces on the switches support the MACsec feature and are configured identically. To enable manual MACsec, an engineer adds the configuration shown in the exhibit to both sides of the trunk. The trunk port stops functioning. Which action should be taken to resolve the issue?
N5K-1#show running-config aaa all
!
version 7.0(2)N2(1)
logging level aaa 5
aaa authentication login default group radius
aaa authentication login console group radius
aaa authorization ssh-publickey default local
aaa authorization ssh-certificate default local
aaa accounting default localaaa user default-role
aaa authentication login default fallback error local
aaa authentication login console fallback error local
aaa authentication login error-enableno
aaa authentication login mschap enableno
aaa authentication login mscapv2 enableno
aaa authentication login chap enable
16.
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?
17.
The EEM script fails to send an SNMP trap when a user attempts to enter configuration mode. Which configuration is missing from the script?
event manager applet config_monitor
event cli match"conf t"
action 1.0 snmp-trap strdata "User has entered into configuration mode"
18.
An engineer upgrades Cisco UCS firmware from release 3. 1(2) to release 3. 1(3) using Autolnstall. Both fabric interconnects go ofline during the software upgrade installation and issue multiple F SM retries in the DeployPollActivate stage. Which set of actions resolves the issue?
19.
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?
20.
A network engineer has connected the Nexus switch management port to the Internet using DHCP to allow the Guest shell running on the switch to download Python packages. The engineer can ping google.com successfully from the Nexus switch, but the Guest shell failed to download any Python packages. Which action resolves the problem?
21.
"A network engineer troubleshoots an issue at a Cisco data center environment with these conditions:
- The data center has Cisco Nexus 9000 Series Switches running the vPC setup.
- The gateway of the servers is an HSRP IP address between the VLAN interfaces configured on
both Cisco Nexus switches.
- Some of the client application servers are implementing fast-path forwarding for the return traffic.
- Those servers are sending the return traffic to the VLAN interface MAC address instead of the
HSRP MAC address.
The network engineer discovers that some traffic is dropped because it passes the vPC peer link
to be forwarded out the vPC interface. What must be configured on the vPC switches to resolve
the issue?
22.
Drag and drop the Cisco UCS SNMP fault types from the left onto the correct issues on the right.
23.
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?
24.
To avoid service disruption, an engineer must move the_ server from LEAF_ 1 to LEAF_ _2. After running the test, the engineer noticed that L EAF_ 2 failed to forward network traffic into the VXL AN fabric. The BGP, interface NVE, and VNI were confirmed to be configured as expected. Which two actions must be taken on L EAF_ 2 to resolve the issue? (Choose two.)
25.
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?
26.
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?
27.
The HSRP instance on both switches is showing as active. Which action resolves the issue?
28.
The scheduler was configured to save the running-config automatically daily. However, the scheduler is returning the error presented. Which action resolves the issue?
29.
A network administrator must delete a feature group from a Cisco Nexus 5000 Series Switch. Which action resolves the issue?
30.
The initiator that has FC ID 0x970102 fails to communicate with the target that has FC ID 0x970200. What action resolves the issue?
31.
A network engineer notices a sudden interruption to the HSRP adjacency between the switches. The packet loss is reported on the servers for which the default gateway is set as the virtual IP of the HSRP. AII servers on the VL AN can exchange ping messages. Which configuration set must be applied on the HSRP peers to resolve the adjacency issue?
32.
An engineer enables the packet postcards feature on a Cisco Nexus 9000 Series Switch but receives the error message "Error: Cannot configure postcard when inband-telemetry is configured."Which action resolves the issue?
33.
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.)
34.
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?.
35.
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?
36.
The connection between a Cisco Nexus 5548UP switch and a Cisco MDS switch fails to initialize. What is the cause of the issue?
37.
Partial configuration from N9K-1 and N9K-2 is included. The client has two WANs connected.
- WAN-1 is for normal business-day activities.
- WAN-2 is for server backups during nonworking hours of 1:00 a.m. to 5:00 a.m. daily.
The client says that at the scheduled time for backup, the data center server failed to use the
WAN-2 link to back up the servers to the cloud backup system. What is the solution to this
problem?
38.
The integration between Cisco UCS Manager and Cisco UCS Central failed. Which action resolves the issue?
39.
A network engineer is configuring the FCoE N_Port virtualization storage area network. After the initial implementation, server 11 fails to connect to the disk array. Which action resolves the issue?
40.
An engineer must connect N2K-Fex-1 and N5K-Core-1 so that the traffic flow between the two devices uses load balancing. After inspecting the statistics of the interconnecting interfaces, the engineer concludes that only one link is used. Which action resolves the problem?
41.
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?
42.
An engineer fails to install Perl in the guest shell on a Cisco Nexus 9000 Series Switch. Which two actions must be taken in the guest shell to resolve the issue? (Choose two.)
43.
A network engineer notices packet drops on FCoE traffic from the servers. Which action resolves the issue?
44.
A user reports that they cannot reach from a UCS server to an FC Storage array. Which command is used to test communication between an FCF and a target?
45.
An engineer is performing a health check on ACI. Which statement about interface Ethernet 1/11 is true?
46.
The FCoE traffic fails to traverse the vfc2 interface. The VSAN 102 is configured for vfc2. Which action resolves the issue?
47.
A network engineer deploys scripts to the guest shell of a Cisco Nexus switch. The scripts fail to operate properly due to the limited CPU and file system resources that are assigned by default to the guest shell. The engineer allocated more memory and disk space to the guest shell, but the application continues to fail. Which action resolves the issue?
48.
An attempt to use a global vNIC redundancy template pair results in a service profile that fails to apply. Which action resolves the issues?
49.
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?
50.
A recent configuration change removes the HSRP adjacency between the SW-1 and SW-2 Cisco Nexus switches. The change causes the servers on this subnet to lose Internet access. Which action restores the connectivity of all servers on VLAN 13?
51.
A system administrator connects a Cisco Nexus 2248PQ FEX to a fabric interconnect to expand the ports that are available for connecting Cisco UCS C-Series Rack Servers. In Cisco UCS Manager, the administrator does not see the servers connected to this FEX. Which action should be taken to resolve the issue?
52.
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
53.
vPC between switch1 and switch2 is not working. Which two actions are needed to fix the problem? (Choose two.)
54.
Cisco Unified Computing System Manager raises a critical error message that indicates that the system has overlapping Ethernet and FCoE VLANs. All of the Ethernet traffic on the overlapping VLANs drops. Which action resolves the issue?
55.
An engineer discovered a VFC interface in a down state on a Cisco Nexus Switch. Which action resolves the problem?
56.
An upgrade operation fails with an error displayed. Which action resolve the issue?
57.
A blade that is connected to FI-A fails to boot from a SAN LUN. The boot policy is configured to boot by using vHBA0 as the SAN Primary. Which action resolves the issue?
58.
An engineer discovers that an NPV/NPIV uplink experiences a heavy load and plans to add more uplinks. Which statement about what occurs when the new uplinks are added is true?
59.
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"
60.
UCS- 1 fails to connect to the storage array. Which action resolves the issue?