2026 Actual Cisco 300-615 Dumps, Updated Exam Questions for Guaranteed Pass

300-615 free sample questions and answers

Cisco 300-615 practice quiz with correct answers for search indexing.

1. Question 1

   Refer to the exhibit.

   

   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?

   AStatically configure the target information in the Boot Policy.
   

   BConfigure an MTU size of 9000 on the appliance port.
   

   CConfigure a QoS policy on the vNIC.
   

   DSet a connection timeout value of 250 in the iSCSI Adapter Policy.
   

   Correct answer: A

   When configuring boot from iSCSI on a Cisco UCS B-Series blade and the LUN fails to mount:

   • Verify that the LUN is mapped to the correct Fibre Channel target and is presented to the boot BIOS: For iSCSI boot to work, the storage target must be properly configured in UCS Manager, the LUN must be mapped and made available, and most importantly, the boot BIOS must be able to discover and recognize the LUN. Verify the iSCSI boot parameters, target portal, LUN mapping, and that the boot order in the service profile is set to iSCSI. Check BIOS settings to ensure iSCSI boot is enabled and the LUN appears in the boot options.

   iSCSI boot requires proper configuration at multiple layers: storage, UCS Manager, and blade BIOS.

2. Question 2

   Refer to the exhibit.

   

   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?

   A* Set ESX01_B zone to VSAN 20.
   * Create a new vHBA and assign VSAN 20.
   

   B* vHBA1 to VSAN 20 in Service Profile.
   * VMware Adapter Policy on vHBA1.
   

   C*Apply VMware Adapter Policy on vHBA1
   *Change vHBA1 to VSAN 20 in Service Profile
   

   D* Set ESX01_B zone to VSAN 20.
   * Change vHBA1 to VSAN 20 in Service Profile
   

   Correct answer: D

   
   

3. Question 3

   Refer to the exhibit.

   

   After a failover occurs, which two actions must be performed on Switch-B to manually preempt the operational primary role back to Switch-A? (Choose two.)

   AConfigure the local vPC role priority to have a lower value than Switch-A.
   

   BConfigure the local vPC role priority to have a higher value than Switch-A.
   

   CDisable and then re-enable the vPC peer-keepalive link.
   

   DConfigure the local vPC role priority to have the same value as Switch-A.
   

   EDisable and then re-enable the vPC peer link.
   

   Correct answer: B, E

   To manually preempt the operational primary role back to Switch-A after a failover, two actions must be performed on Switch-B:

   • Clear the HSRP session on Switch-B: This forces the current active HSRP session to reset. Once cleared, HSRP will re-elect the primary based on configured priorities.
   • Configure a higher HSRP priority on Switch-A: By ensuring Switch-A has a higher priority value than Switch-B (default is 100, so Switch-A should be configured higher), Switch-A will become and remain the primary when HSRP re-elects, assuming preemption is enabled.

   Together, these actions ensure Switch-A regains and maintains the primary role.

4. Question 4

   Refer to the exhibit.

   

   A Cisco UCS Fabric Interconnect fails during the upgrade process. The working images of the fabric interconnect are stored on the bootflash. Which set of commands recovers the fabric interconnect?

   Aloader> dir
   loader> boot ucs-6300-k9-kickstart.5.0.2.N1.3.02d56.bin
   switch(boot)# init system
   switch(boot)# reload
   switch(boot)# load ucs-6300-k9-system.5.0.2.N1.3.02d56.bin
   

   Bloader> dir
   loader> boot ucs-6300-k9-kickstart.5.0.2.N1.3.02d56.bin
   switch(boot)# copy ics-manager-k9.1.4.1k.bin nuova-sim-mgmt-nsg.0.1.001.bin
   switch(boot)# boot ucs-6300-k9-system.5.0.2.N1.3.02d56.bin
   

   Cloader> dir
   loader> boot ucs-6300-k9-kickstart.5.0.2.N1.3.02d56.bin
   switch(boot)# init system
   switch(boot)# reload
   switch(boot)# boot ucs-6300-k9-system.5.0.2.N1.3.02d56.bin
   

   Dloader> dir
   loader> boot ucs-6300-k9-kickstart.5.0.2.N1.3.02d56.bin
   switch(boot)# copy ics-manager-k9.1.4.1k.bin nuova-sim-mgmt-nsg.0.1.001.bin
   switch(boot)# load ucs-6300-k9-system.5.0.2.N1.3.02d56.bin
   

   Correct answer: D

   When a Cisco UCS Fabric Interconnect fails during the upgrade process and working images are stored on bootflash, recovery typically involves using bootloader or BIOS-level commands to restore the system. Common recovery procedures include:

   • Access the bootloader prompt: Interrupt the boot process to access the bootloader/BIOS menu
   • List available images: View the working images stored on bootflash
   • Select boot image: Select and boot from a known working image stored on bootflash
   • Allow system to boot: Let the system complete the boot process from the working image
   • Verify system stability: Confirm the system comes up and is stable
   • Retry upgrade: Once stable, attempt the firmware upgrade again

   The recovery procedure typically involves accessing the bootloader during startup (often by pressing Ctrl+C or Del during POST), listing available images with commands like 'dir bootflash:', and then booting from a known working image using the 'boot' command with the image path.

5. Question 5

   You are investigating a Cisco Unified Computing System (UCS) blade chassis where a newly installed server is unable to boot from SAN. You confirm that Fibre Channel zoning is correct, the VSAN is properly assigned to the I/O module (IOM), and FC link training is successful. However, when you check the Fibre Channel buffers on the switch, you notice the buffer credit counters are incrementing rapidly, and the fabric is dropping frames destined for the server's boot LUN. What is the primary cause of this issue?

   AThe server's VIC adapter is not configured with the correct boot order priority in the service profile
   

   BFibre Channel buffer credit starvation is occurring, likely due to flow control mismatch or the switch not receiving buffer-to-buffer (B2B) credit replenishment from the storage array
   

   CThe NPIV (N_Port ID Virtualization) configuration on the IOM is preventing the server from receiving a valid FCID
   

   DDevice Alias is not configured between the server and the storage array, causing the fabric to drop unresolved frames
   

   Correct answer: B

   Buffer credit starvation occurs when a switch depletes its available buffer-to-buffer (B2B) credits because the receiving device (storage array in this case) is not returning credits fast enough. Rapidly incrementing buffer credit counters and frame drops are classic symptoms. This is caused by flow control issues, mismatched frame sizes, or the storage array not properly signaling credit return. Boot order in the service profile affects the boot sequence but does not cause buffer exhaustion. NPIV is used for N_Port virtualization and would prevent FCID assignment, but that would typically cause a login failure, not buffer starvation. Device Alias is for naming convenience and does not affect frame forwarding or credit flow. The correct answer directly addresses the observed symptom: rapidly incrementing buffer credits with frame loss indicates credit starvation in the Fibre Channel fabric.