Key details for this exam, checked against the published exam outline
Each question shows the correct answer and an explanation of why it is right
Which Cisco UCS management platform is specifically designed for managing standalone Cisco UCS C-Series rack servers and E-Series servers?
The Cisco Integrated Management Controller (CIMC) is the embedded management solution designed specifically for standalone Cisco UCS C-Series rack servers and E-Series servers. It allows administrators to perform out-of-band management functions such as BIOS configuration, firmware updates, remote console access, and power control.
Cisco UCS Manager is used for managing UCS blade chassis environments.
Cisco UCS Central is intended for centralized management across multiple UCS domains.
Cisco Intersight is a cloud-based management platform that can extend CIMC functionality but is not the embedded, standalone option.
What is the primary purpose of changing the configuration register when performing password recovery?
During password recovery on Cisco devices, the configuration register is modified to instruct the device to bypass the startup configuration stored in NVRAM. This allows administrators to access the device without being prompted for existing passwords. The standard procedure involves changing the configuration register value to 0x2142, which tells the device to ignore the startup configuration during the next boot. Once access is gained, the administrator can reset passwords and then restore the original configuration by resetting the configuration register to its default value, typically 0x2102.
Which common CLI command is used to install Cisco NX-OS Software?
The install all command is the standard method used to install or upgrade Cisco NX-OS software on Nexus switches. This command streamlines the installation process by automating tasks such as verifying the software image, checking for compatibility, and managing the installation of optional packages or SMUs (Software Maintenance Upgrades). It ensures a comprehensive and efficient upgrade process, minimizing the potential for errors.Cisco
In contrast:
copy tftp: running-config is used to copy configuration files, not software images.
install kickstart is an outdated command from earlier NX-OS versions.
boot system sets the boot variable but does not handle the full installation process.
How many bits are borrowed from the default host portion of the address to create subnets in a Class B network with a subnet mask 255.255.255.0?
In a Class B network, the default subnet mask is 255.255.0.0, which allocates:
16 bits for the network portion
16 bits for the host portion
When the subnet mask is changed to 255.255.255.0, it becomes:
24 bits for the network portion
8 bits for the host portion
This indicates that 8 bits have been borrowed from the host portion to create additional subnets. Borrowing bits allows for the division of the original network into smaller sub-networks, enhancing organization and security within the network.
Which step must be performed immediately after disconnecting the network cable when replacing an SFP transceiver module?
After disconnecting the network cable from an SFP transceiver, the immediate next step is to reinstall the dust plugs into the optical bores. This action prevents contamination from dust or debris that can damage the optical interfaces or degrade performance.
It's important to protect the exposed optical port before handling the rest of the transceiver module. Dust plugs help maintain the integrity of the component until a new cable or module is connected.
100 questions covering all exam domains, starting from $20
Exam domains verified against: Official Cisco 800-150 exam guide, last checked August 2026.
Covers core networking concepts including OSI model, TCP/IP stack, IP addressing, subnetting, switching and Layer 2 technologies, and routing at Layer 3. Also includes understanding of Cisco infrastructure networking devices across campus, data center, and branch environments.
Sample question from this domain above: Q4
Covers Cisco device boot processes, common IOS commands, file management tools, physical layer connectivity confirmation, and remote network access. Includes console port connections, device status capture, password recovery, and locating serial numbers on devices.
Sample question from this domain above: Q2
Covers comparison of IOS bundle and install modes, Cisco software licensing models, and management of software images including backup and transfer via FTP, TFTP, and USB.
Sample question from this domain above: Q3
Covers identification of infrastructure components and collaboration devices including endpoints, on-premises deployments with call controllers and CUCM, video endpoints with Telepresence Management Suite, and cloud services including Webex and Cisco hosted solutions.
Covers safety protocols, ESD discharge procedures, and the physical replacement process for Cisco switches, routers, firewalls, Nexus switches, UCS servers, and collaboration devices. Includes NX-OS configuration and command line interface skills.
Sample question from this domain above: Q5
Covers data center network devices including LAN/SAN with Unified Fabric, Nexus switches, UCS servers, and MDS directors. Includes virtualization components such as hypervisors and cloud computing deployment and delivery models.
Sample question from this domain above: Q1
Common questions about the exam itself
