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Implementing and Operating Cisco Data Center Core Technologies (DCCOR) Questions 106–110 (page: 23)

Updated On: 10-Feb-2026

DRAG DROP (Drag and Drop is not supported)
An engineer deploys a custom guest shell rootfs onto multiple switches.
Drag and drop the steps from the left into the correct order on the right.
Select and Place:

  1. See Explanation section for answer.

Answer(s): A

Explanation:



An engineer changed a configuration and must perform a rollback.
Which statement applies to a Cisco Nexus 5600 Series Switch?

  1. The configuration rollback functionality is disabled when FCoE is enabled.
  2. A system checkpoint is generated automatically when the running configuration is saved to NVRAM.
  3. A user who is assigned to the network-operator user role is allowed to perform a rollback.
  4. Errors are skipped when an atomic rollback type is triggered.

Answer(s): A

Explanation:

Guidelines and Limitations -
Rollback has the following configuration guidelines and limitations:
* You can create up to ten checkpoint copies.
* You cannot apply the checkpoint file of one switch into another switch.
* Your checkpoint file names must be 75 characters or less.
* You cannot start a checkpoint filename with the word system
* When FCoE is enabled, the checkpoint and configuration rollback functionality are disabled.


Reference:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/system_management/503_n1_1/ cisco_n5k_system_mgmt_cg_rel_503_n1_1_chapter11.pdf



Which statement describes the rolling EPLD upgrade on a Cisco MDS 9000 Series Switch?

  1. The standby supervisor module is capable of performing the upgrade.
  2. Only the modules that are being upgraded are disrupted.
  3. All modules on the switch are disrupted.
  4. An EPLD upgrade is nondisruptive.

Answer(s): B

Explanation:

When you upgrade or downgrade the EPLDs, observe the following guidelines and limitations:
* You can upgrade each module only when it is online. The EPLD upgrade is only disruptive to the module being upgraded.
* If you interrupt an EPLD upgrade or downgrade, the module must be upgraded again.
* In Cisco MDS 9000 Director Switches, EPLD upgrade or downgrade can only be executed from the active supervisor module. To upgrade the supervisor
EPLDs nondisruptively, upgrade the standby supervisor and then switchover. After the new standby supervisor is online, its EPLDs can be upgraded.
* In Cisco MDS 9000 Series Fabric Switches, be sure to specify 1 as the module number. The switch must be power cycled for the EPLDs to start running the new code.


Reference:

https://www.cisco.com/c/en/us/td/docs/dcn/mds9000/sw/9x/release-notes/epld/epld-rn-922.html



Which command reduces the amount of time it takes to complete the ISSU on a Cisco Nexus 7000 Series Switch that has dual supervisor modules and two I/O modules?

  1. insinstall all epld bootflash:<image> parallel
  2. install all kickstart <image> system <image> parallel
  3. install all kickstart <image> system <image>
  4. install all epld bootflash: <image>

Answer(s): B

Explanation:

Starting with Cisco NX-OS Release 5.2(1), multiple linecards can be simultaneously upgraded, and the infrastructure support is available. This decreases the
ISSU time when compared with an ISSU upgrade that is done serially (one card at a time).
To start a parallel upgrade, use the following command: install all kickstart image system image parallel.


Reference:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus7000/sw/upgrade/guide/ cisco_nexus7000_software_upgrade_and_downgrade_guide_8x.html



Which two statements describe the process of performing an EPLD upgrade on a Cisco MDS 9000 Series Switch? (Choose two.)

  1. The upgrade is performed from the standby supervisor module.
  2. The upgrade process disrupts only the module that is being upgraded.
  3. The upgrade is performed on the active supervisor.
  4. If an upgrade is interrupted, the upgrade continues after a connection is restored.
  5. Modules must be online to be upgraded.

Answer(s): B,E

Explanation:

When you upgrade or downgrade the EPLDs, observe the following guidelines and limitations:
* You can upgrade each module only when it is online. The EPLD upgrade is only disruptive to the module being upgraded.
* If you interrupt an EPLD upgrade or downgrade, the module must be upgraded again.
* In Cisco MDS 9000 Director Switches, EPLD upgrade or downgrade can only be executed from the active supervisor module. To upgrade the supervisor
EPLDs nondisruptively, upgrade the standby supervisor and then switchover. After the new standby supervisor is online, its EPLDs can be upgraded.
* In Cisco MDS 9000 Series Fabric Switches, be sure to specify 1 as the module number. The switch must be power cycled for the EPLDs to start running the new code.


Reference:

https://www.cisco.com/c/en/us/td/docs/dcn/mds9000/sw/9x/release-notes/epld/epld-rn-922.html



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