The Cisco 800-150 exam, Supporting Cisco Devices for Field Technicians, validates your ability to deploy, configure, and troubleshoot Cisco equipment in field environments. This certification is a key milestone on the path to becoming a Cisco Certified Field Technician. This page guides you through the exam structure, core topics, and effective study strategies to help you prepare with confidence. Whether you're new to field support or advancing your technical credentials, understanding the exam blueprint is the first step toward success.
Use this topic map to guide your study for Cisco 800-150 (Supporting Cisco Devices for Field Technicians) within the Cisco Certified Field Technician path.
The 800-150 exam uses multiple question types to assess both theoretical knowledge and practical decision-making in field scenarios. Questions progress in difficulty and reflect real-world support situations.
Questions are designed to mirror the complexity and decision-making you'll encounter during field deployments and support calls.
An effective study plan breaks the five topic areas into weekly milestones and combines reading, practice questions, and hands-on review. Allocate more time to areas where you have less field experience, and use practice test feedback to identify weak points early.
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Cisco Hardware Replacement and Cisco Software typically account for a larger portion of the exam because these are core field technician tasks. However, all five domains are tested, so a balanced study approach is essential. Review the official exam blueprint to confirm current topic weightings.
In practice, these domains overlap continuously. For example, when replacing a failed power supply (Hardware Replacement), you must understand the device's network role (Infrastructure), verify software compatibility (Software), and diagnose whether the failure affected connectivity (Networking Foundations). Studying with this integrated perspective helps you apply knowledge more effectively in the field.
Hands-on experience is valuable but not mandatory if you study strategically. Prioritize labs that involve device access, software image management, and hardware replacement procedures. If you lack lab access, detailed practice questions and scenario reviews can bridge the gap. Many candidates pass with strong conceptual knowledge and realistic practice tests.
Common pitfalls include confusing similar device models or software versions, overlooking safety procedures in hardware replacement scenarios, and misinterpreting network diagrams. Many candidates also underestimate the importance of data center architecture topics. Read each question carefully, and don't rush scenario-based items, they reward thorough analysis.
Focus on high-weight topics and re-review any questions you answered incorrectly during practice tests. Take one full-length timed practice test to assess pacing and confidence. Avoid cramming new material; instead, reinforce concepts you've already studied. Get adequate sleep the night before the exam to ensure mental clarity.
Which two actions are typically performed in ROMMON mode during the password recovery process? (Choose two.)
During the password recovery process on Cisco devices, ROMMON (ROM Monitor) mode is utilized to perform specific actions that facilitate the recovery. Two critical actions typically performed in ROMMON mode are:
Change the Configuration Register: The configuration register is modified to instruct the device to ignore the startup configuration during the next boot. This is commonly achieved by setting the configuration register to 0x2142. This action prevents the device from loading the saved configuration, allowing access without requiring the existing passwords.
Reboot the Device: After changing the configuration register, the device is rebooted to apply the new settings. This reboot enables the device to bypass the startup configuration, facilitating the password recovery process.
These steps are essential in the password recovery procedure, allowing administrators to regain access to the device without erasing the existing configuration.
What is the primary advantage of the Cisco Intersight cloud-based approach compared to traditional on-premises management tools?
The main advantage of Cisco Intersight is its cloud-based architecture, which allows IT administrators to manage infrastructure from any location without needing to install or maintain traditional on-premises management tools.
This provides:
Centralized visibility and control over UCS servers and HyperFlex infrastructure
Remote firmware upgrades and configuration
Policy-driven automation
Unlike on-premises tools, Intersight eliminates the overhead of maintaining dedicated infrastructure for management.
Which command is used to determine if there is sufficient space in the memory of a device before installing a new Cisco IOS image?
The show flash: command is used to display the contents of the device's flash memory, which is where the Cisco IOS image is typically stored. By issuing this command, a technician can verify available space and determine whether there is enough capacity to accommodate a new IOS image before initiating an upgrade or image replacement process.
This command provides a detailed listing of files, their sizes, and the total and available memory space within the flash file system.
show file-system lists all available file systems but doesn't detail their content.
show memory shows runtime memory usage (RAM), not flash memory.
show storage is not a standard IOS command.
What happens to the switch operation when a supervisor module in a Cisco Nexus switch is replaced by two supervisor modules?
In Cisco Nexus switches, when transitioning from a single supervisor module to a dual supervisor configuration, the behavior depends on the redundancy mode configured.
Stateful Switchover (SSO): In configurations supporting SSO, the active and standby supervisors synchronize their state and configuration, allowing for seamless failover without resetting other modules.
Stateless Switchover (Warm Standby): In certain modes, such as the ACI-mode on Cisco Nexus 9508 switches, the standby supervisor does not maintain synchronized state information with the active supervisor. In this scenario, if a switchover occurs (e.g., due to the replacement of the active supervisor), all modules in the switch are reset because the switchover is stateless.
Therefore, when a supervisor module is replaced in a configuration that does not support stateful switchover, all modules in the switch are reset due to the stateless nature of the switchover.
Why is a Cisco Nexus switch typically deployed in a network?
Cisco Nexus switches are specifically designed for deployment in data centers, where they provide high-performance, low-latency switching to support modern workloads, virtualization, and cloud computing environments.
Nexus switches operate using NX-OS, a purpose-built operating system optimized for data center needs. These switches support technologies like virtual port channels (vPC), FabricPath, and Application Centric Infrastructure (ACI), which are essential for scalable and highly available data center networks.
They are not typically used in branch offices, as wireless access points, or as edge routers.
