[Q27-Q49] Full 800-150 Practice Test and 102 Unique Questions, Get it Now!

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Full 800-150 Practice Test and 102 Unique Questions, Get it Now!

The Best 800-150 Exam Study Material Premium Files and Preparation Tool

Cisco 800-150 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Software and Configuration Support	15%	– Accessing devices via console or remote methods – Basic configuration and license verification – Software image management and verification
Topic 2: Troubleshooting and Field Operations	20%	– Documentation, safety and escalation processes – Diagnose hardware, connectivity and interface issues – Wireless device support and basic troubleshooting
Topic 3: Cisco Device Installation and Setup	20%	– Initial verification and startup procedures – Power, cabling and interface identification – Physical installation and rack mounting
Topic 4: Hardware Components and Replacement	25%	– Safe replacement procedures and ESD protection – Replacement for UCS, collaboration and Meraki devices – Identify field replaceable units (FRUs) for switches, routers, firewalls
Topic 5: Networking Fundamentals	20%	– IP addressing, subnetting and routing basics – VLAN, switching and connectivity concepts – OSI model and network topologies

QUESTION 27
What is the recommended resistance value range to ensure proper grounding when using an antistatic strap to perform work on electrical components?

Between 0.1 and 1 megaohms

Between 1 and 10 megaohms

Between 10 and 100 megaohms

Between 100 and 1000 megaohms

Theideal resistance rangefor ESD wrist straps isbetween 1 and 10 megaohms. This range is sufficient to safely discharge static electricity from the technician to ground, while not allowing an abrupt discharge that could damage sensitive electronic components.
* Values below 1 megaohm may result in a rapid discharge, risking damage.
* Valuesabove 10 megaohms may not discharge static efficiently enough.
Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Safety and ESD Precautions

QUESTION 28
Which Cisco UCS management platform is specifically designed for managing standalone Cisco UCS C- Series rack servers and E-Series servers?

Cisco Integrated Management Controller

Cisco UCS Central

Cisco UCS Manager

Cisco Intersight

TheCisco Integrated Management Controller (CIMC)is the embedded management solution designed specifically forstandalone 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 Manageris used for managing UCS blade chassis environments.
* Cisco UCS Centralis intended for centralized management across multiple UCS domains.
* Cisco Intersightis a cloud-based management platform that can extend CIMC functionality but is not the embedded, standalone option.
Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Cisco Equipment and Related Hardware

QUESTION 29
What does OIR stand for in the context of Cisco ASR component replacement?

Offline Installation and Reboot

Operational Interface Redundancy

Optical Interface Routing

Online Insertion and Removal

Online Insertion and Removal (OIR)is a feature supported by Cisco ASR routers that allows for the insertion and removal of hardware components, such as line cards and modules, while the router is operating.
Thiscapability enables maintenance and upgrades without the need to power down the system, thus minimizing network downtime.
Key aspects of OIR include:
* Seamless Operation:OIR allows for hardware changes without interrupting the router’s operation.
* Preservation of Routing Information:The router maintains all routing information and active sessions during the insertion or removal process.
* Administrative Shutdown:While not mandatory, it is recommended to administratively shut down the interfaces associated with the component being removed to ensure a graceful transition.
This feature is particularly beneficial in high-availability environments where maintaining continuous network service is critical.
Reference:Supporting Cisco Devices for FieldTechnicians (FLDTEC) – Maintenance and RMA Procedures

QUESTION 30
Refer to the exhibit.

Refer to the exhibit. Which replaceable components are highlighted on the three different series of Cisco UCS servers?

storage modules

GPU sockets

fan modules

power supplies

The highlighted components in all three Cisco UCS server models (5108 B-Series Blade Server Chassis, X9508 X Series Modular Server Chassis, and C225 M6 Rack Server) are fan modules, which are field-replaceable units responsible for cooling the system.
The highlighted components in the images correspond to cooling fans – these are essential for maintaining optimal thermal conditions within each Cisco UCS server type. Here’s a breakdown of what’s visible in each:
Cisco UCS 5108 B-Series Blade Server Chassis: The highlighted vertical rectangular components are fan modules, which provide high-efficiency airflow for the densely packed blades.
Cisco UCS X9508 X-Series Modular Server Chassis: The front-facing fan trays are clearly marked, used to cool the modular nodes and shared infrastructure.
Cisco UCS C225 M6 Rack Server: The highlighted components on the side of the motherboard are also fan modules, directly responsible for cooling the CPU, memory, and other internal components.
These fans are field-replaceable units (FRUs) and are routinely accessed by technicians during preventive maintenance or fault replacement.

QUESTION 31
What is the first action that must be taken before removing a standby supervisor module from a Cisco MDS
9700 Series Switch?

Shut down the entire switch.

Put themodule into out-of-service mode.

Disconnect all network interface cables.

Perform a manual failover to the standby supervisor.

In theFLDTEC course, the process for removing or replacing asupervisor module- especially thestandby supervisor- in a modular switch like theCisco MDS 9700is clearly outlined. Cisco documentation states:
“Before removing a standby supervisor module, it must first be placed into out-of-service mode using the CLI command system no supervisor <slot-number> or via the appropriate management interface.” This action ensures the systemacknowledges the supervisor is no longer participating in redundancy, allowing a safe and controlled removal without impacting system operations.
Why not the other options?
* A. Shut down the entire switch# Not required; MDS switches are built for high availability and allow hot-swap operations.
* C. Disconnect all network interface cables# This applies to line cards or interfaces, not to supervisor removal specifically.
* D. Perform a manual failover# Failover is requiredwhen removing the active supervisor, not the standby one.

QUESTION 32
Which two actions are typically performed in ROMMON mode during the password recovery process? (Choose two.)

Change the configuration register.

Load the startup configuration.

Save the configuration.

Modify passwords.

Reboot the device.

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.

QUESTION 33
What is the primary purpose of changing the configuration register when performing password recovery?

To enable advanced debugging features

To unlock all user accounts

To erase the entire configuration

To ignore the startup configuration

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.

QUESTION 34
Which layer of the OSI model provides error detection and defines how access to the media is controlled?

Presentation layer

Physical layer

Network layer

Data link layer

The Data Link Layer (Layer 2) of the OSI model is responsible for node-to-node data transfer and plays a crucial role in error detection and media access control. It ensures that data frames are transmitted to the correct device on a local network segment.
This layer is divided into two sublayers:
Logical Link Control (LLC): Manages frame synchronization, flow control, and error checking.
Media Access Control (MAC): Controls how devices on the network gain access to the medium and permission to transmit data.
Together, these sublayers ensure reliable data transmission by detecting and possibly correcting errors that may occur in the Physical Layer. They also manage how devices share the transmission medium, preventing collisions and ensuring orderly communication.

QUESTION 35
What is the primary function of a wireless LAN controller in a Cisco Unified Wireless Network solution?

To manage and configure associated access points centrally

To operate at Layer 3 of the OSI model

To translate data into a frame format for transmission

To provide wireless connectivity to LAN devices

The Wireless LAN Controller (WLC) plays a central role in Cisco’s Unified Wireless Network solution by providing centralized management, configuration, and monitoring for multiple access points (APs). It allows for streamlined policy enforcement, seamless mobility, load balancing, and security management across wireless networks.
While WLCs facilitate wireless connectivity indirectly, their main role is to centrally manage and control access points – not to function as Layer 3 routers or format data frames.
Reference:
The primary function of a wireless LAN controller (WLC) in a Cisco Unified Wireless Network is to centrally manage, configure, and monitor multiple access points, simplifying administration and enhancing scalability.

QUESTION 36
What must be verified before installing or replacing DIMMs in a Cisco UCS server?

Compatibility of the DIMM with the current firmware version of the server

Current DIMM configuration and population order

Exact type, speed, and capacity of the DIMM

Maximum supported DIMM capacity for the server model

Before installing or replacingDIMMs (Dual In-line Memory Modules)in a Cisco UCS server, it is essential to verify thecurrent DIMM configuration and the population order. Cisco UCS servers have strict memory population rules to ensure optimal performance and compatibility, particularly in relation to memory channels and banks.
While the type, capacity, and firmware compatibility are important, failing to follow the correct population guidelines can result in failed boot processes or suboptimal performance.
Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Cisco Equipment and Related Hardware

QUESTION 37
When should a crossover UTP cable be used instead of a straight-through cable when connecting network devices?

To connect electrically like devices

To connect a PC to a wireless access point

To connect a switch to a router

To connect electrically unlike devices

A crossover UTP (Unshielded Twisted Pair) cable is used to connect two similar devices directly. This includes:
Switch to switch
Router to router
PC to PC
The crossover cable reverses the transmit and receive pairs, allowing for proper communication between like devices without the need for an intermediary device.
Conversely, a straight-through cable is used to connect dissimilar devices, such as:
PC to switch
Router to switch
PC to router
This cable maintains the same wiring on both ends, suitable for connecting different types of devices.
Therefore, when connecting electrically like devices, a crossover cable is appropriate.

QUESTION 38
Drag and drop the characteristics from the left onto the corresponding categories of MDS switch on the right.

Explanation:

Cisco MDS switches are segmented into two key categories: Director-Class and Fabric Switches, each tailored for different SANenvironments:
Director-Class Switches (e.g., Cisco MDS 9700 Series):
Modular and highly scalable
Support hot-swappable components (line cards, supervisors, fabric modules) High port density and performance for core SANs in enterprise data centers Fabric Switches (e.g., Cisco MDS 9148T):
Compact, fixed-form factor
Best suited for smaller SANs or edge locations
Cost-effective and simple to deploy
This distinction is important when selecting hardware for data center core vs access layers in SAN architectures.

QUESTION 39
Which cable type should be used when installing replacement hardware and connecting two devices of the same type, like two DTEs or two DCEs?

USB Type A to Type B cable

Rolled RJ-45 to RJ-45 console cable

RJ-45 Ethernet straight-through patch cable

RJ-45 Ethernet crossover patch cable

When connectingtwo devices of the same type(e.g., two routers, two switches, or two DTEs), acrossover cableis required. This cable swaps the transmit and receive pairs to allow direct communication between devices without the need for an intermediate device like a switch.
* Straight-through cablesare used to connect different types of devices (e.g., PC to switch).
* Rolled cablesare used for console access.
* USB Type A to Bcables are typically used for peripheral device connections, not networking.
Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Cisco Equipment and Related Hardware

QUESTION 40
What does OIR stand for in the context of Cisco ASR component replacement?

Offline Installation and Reboot

Operational Interface Redundancy

Optical Interface Routing

Online Insertion and Removal

Online Insertion and Removal (OIR) is a feature supported by Cisco ASR routers that allows for the insertion and removal of hardware components, such as line cards and modules, while the router is operating. This capability enables maintenance and upgrades without the need to power down the system, thus minimizing network downtime.
Key aspects of OIR include:
Seamless Operation: OIR allows for hardware changes without interrupting the router’s operation.
Preservation of Routing Information: The router maintains all routing information and active sessions during the insertion or removal process.
Administrative Shutdown: While not mandatory, it is recommended to administratively shut down the interfaces associated with the component being removed to ensure a graceful transition.
This feature is particularly beneficial in high-availability environments where maintaining continuous network service is critical.

QUESTION 41
When should a crossover UTP cable be used instead of a straight-through cable when connecting network devices?

To connect electrically like devices

To connect a PC to a wireless access point

To connect a switch to a router

To connect electrically unlike devices

Acrossover UTP (Unshielded Twisted Pair) cableis used to connect two similar devices directly. This includes:
* Switch to switch
* Router to router
* PC to PC
The crossover cable reverses the transmit and receive pairs, allowing for proper communication between like devices without the need for an intermediary device.
Conversely, astraight-through cableis used to connect dissimilar devices, such as:
* PC to switch
* Router to switch
* PC to router
This cable maintains the same wiring on both ends, suitable for connecting different types of devices.
Therefore, when connecting electrically like devices, a crossover cable is appropriate.
Reference:Supporting Cisco Devices for FieldTechnicians (FLDTEC) – Cisco Equipment and Related Hardware

QUESTION 42
What is the primary purpose of backing up the endpoint configuration prior to replacing the device?

To troubleshoot network connectivity issues

To update the firmware of the device

To generate a performance report for the old device

Torestore settings on the new device after replacement

Backing up the configuration of a network device before replacement is a critical step to ensure business continuity and minimize downtime. The primary purpose of this backup is torestore the existing settings onto the new device, ensuring that it operates identically to the one being replaced.
This process includes preserving interface configurations, routing protocols, access control lists, and other essential parameters. By restoring the backed-up configuration to the new device, network administrators can quickly reintegrate it into the network infrastructure without the need for manual reconfiguration, thereby reducing the risk of errors and service disruptions.
Options A, B, and C do not align with the primary objective of configuration backups in the context of device replacement.
Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Maintenance and RMA Procedures

QUESTION 43
What is the purpose of the chassis in a blade server environment?

To provide additional processing power

To act as a storage array for the servers

To replace the need for network switches

To house multiple servers

In ablade server environment, thechassisserves as the enclosure thathouses multiple blade servers. It provides shared power, cooling, and connectivity resources. Blade servers are compact server modules that insert into the chassis, and the shared infrastructure makes the entire system efficient in space, power, and management.
The chassis does not act as a switch or storage array itself but provides interconnects and sometimes integrated networking components.
Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – CiscoEquipment and Related Hardware

QUESTION 44
What is the primary role of a switch in a local area network?

to route data packets between different networks

to encrypt data transmissions for security

to divide the network into separate collision domains

to provide wireless connectivity to LAN devices

In a local area network (LAN), the primary function of a switch is to operate at Layer 2 (Data Link Layer) of the OSI model. Switches use MAC addresses to forward frames to the appropriate destination ports. This targeted forwarding mechanism divides the network into separate collision domains for each switch port. By isolating collision domains, switches significantly reduce the chance of collisions, enhancing the performance and efficiency of the network.
Unlike hubs, which forward all traffic to all ports (thus creating a single collision domain), switches intelligently forward only the necessary traffic to the correct port. This capability allows multiple simultaneous conversations on different switch ports without interference.
Routers, which operate at Layer 3 (Network Layer), are used to route packets between different networks, not within the same LAN. Wireless connectivity is provided by wireless access points (WAPs), not switches. Encryption is typically handled by security protocols or devices such as firewalls and not by switches directly.

QUESTION 45
What is the purpose of the pre-service checklist in the endpoint replacement process?

To ensure all necessary tools and personnel are available

To test the functionality of the existing endpoint

To verify the current configuration settings of the endpoint

To gather information about the replacement unit

A pre-service checklist is a procedural step followed before replacing an endpoint. Its primary purpose is to confirm that all resources, tools, documentation, and personnel are in place to execute the replacement efficiently and without delays.
It helps avoid service interruptions and ensures a smooth replacement by ensuring that every necessary component and action is accounted for ahead of time.

QUESTION 46
Drag and drop the configuration tasks for restoring software from the left onto the corresponding commands on the right.

QUESTION 47
Which mode must the console terminal of the device be in before a prewritten configuration is pasted to transfer the configuration from an old device to a new one?

Interface configuration mode

Global configuration mode

Privileged EXEC mode

User EXEC mode

To apply a prewritten configuration to a new Cisco device, the console terminal must be inGlobal Configuration Mode. This mode allows administrators to enter configuration commands that affect the device’s overall operation. To access Global Configuration Mode, one must first enter Privileged EXEC Mode by typingenable, and then enterconfigure terminal. Once in Global Configuration Mode, theprewritten configuration can be pasted, and the device will accept the commands accordingly.
Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Device Configuration and Verification

QUESTION 48
Which common CLI command isused to install Cisco NX-OS Software?

copy tftp: running-config

install all

install kickstart

boot system

Theinstall allcommand 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-configis used to copy configuration files, not software images.
* install kickstartis an outdated command from earlier NX-OS versions.
* boot systemsets the boot variable but does not handle the full installation process.
Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Cisco IOS Software Basics

QUESTION 49
Why is the midplane-free design of the X9508 Modular Chassis significant in the context of Cisco UCS X-Series compute node replacement?

It enables hot-swapping of compute nodes without powering down the chassis.

It enables direct front-to-rear airflow, improving cooling efficiency during node replacement.

It allows for easier future upgrades to faster connectivity standards.

It reduces the overall power consumption of the chassis.

TheCisco UCS X9508 Modular Chassis, part of the UCS X-Series architecture, is designedwithout a midplane, which marks a major shift from previous UCS models. Themidplane-free designis critical because:
#Direct front-to-rear airflowis made possible without obstruction.
#This airflow architectureenhances thermal efficiency, especially important duringcompute node replacementsor upgrades.
#It allowsmodules to communicate via side-plane connectors, which are located on the sides rather than a fixed midplane.
This architecture:
* Simplifies mechanical design
* Reduces cooling complexity
* Improvesmodularityandaccessibility
#Why the other options are incorrect:
* A.Hot-swapping is supported, but notbecauseof midplane-free design-it’s a UCS standard feature.
* C.Upgrades to faster interconnects are enabled by side-plane I/O, not by midplane absence alone.
* D.Power efficiency is a broader chassis feature, not specifically driven by the midplane design.

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