Pass the Cisco Cisco Certified Field Technician (CCT) 800-150 Questions and answers with CertsForce

To ensurehigh availability and fault tolerancein Cisco data center designs, two effective strategies include:

Redundant Supervisor Engines and Fabric Modules: These provide failover capabilities, so if one supervisor or fabric module fails, another can take over, maintaining network operations without interruption.

Virtual Port Channels (vPCs): vPCs allow connections to be made to two physical switches while appearing as one logical switch. This prevents loops and adds redundancy and load balancing, which is critical in high-availability environments.

Other options may enhance performance (e.g., high-density Ethernet) or extend functionality (e.g., FCIP), but do not directly contribute to fault tolerance and high availability in the same way.

In theFLDTEC curriculum, technicians are trained on physical tools essential for support in the field. These tools and their uses are explained as follows:

Flash Card Reader:Used with removable CompactFlash cards commonly found in older Cisco routers and switches. These cards hold the IOS image or config files.

USB Thumb Drive:Used for transferring IOS files or configs directly to and from Cisco devices that support USB storage. Convenient for portable backups.

RJ-45 Ethernet Loopback Connector:A diagnostic tool that loops the signal back into the port. Helps verify port functionality by simulating a live Ethernet connection.

RJ-45 Coupler:Allows two patch cables to be connected, effectively extending the reach of a cable — useful in setups where a single cable is not long enough.

The correct sequence for mounting a Cisco device in a rack is:​

Install mounting brackets: Attach the appropriate rack-mount brackets to the sides of the device using the screws provided. This step prepares the device for secure installation in the rack.​

Mount in rack: Carefully place the device into the rack, aligning the brackets with the rack posts, and secure it using the appropriate rack-mount screws.​

Ground the device: After the device is securely mounted, connect the grounding wire to the chassis grounding point and then to the facility ground. This step ensures safety and compliance with electrical standards.​

This sequence is recommended to ensure both the physical security of the device and the safety of personnel during installation.​

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.

The Cisco Collaboration Infrastructure is designed to support unified communications, video conferencing, and team collaboration through an integrated architecture involving both hardware (e.g., endpoints, media servers) and software (e.g., CUCM, Webex apps).

According to the FLDTEC course content under Cisco Collaboration Equipment and Infrastructure:

Facilitating Connections (C):

Cisco infrastructure components such as CUCM, Expressway, and Cisco Meeting Server enable real-time connections between users across voice, video, and messaging systems.

Supporting Meeting Experiences (E):

Devices such asWebex Boards, Room Kits, and Cisco Quad Cameras, in combination with platforms like Webex, provide immersive and seamless meeting experiences, supported by the infrastructure.

Incorrect Options:

A. Network bandwidth allocation: Typically managed by network QoS policies and WAN optimizations, not the collaboration infrastructure directly.

B. Hosting large-scale databases: Not a function of Cisco’s collaboration system — this falls under data center or database server roles.

D. Phone book administration: Often a function within directory services or external LDAP integration, not a core collaboration infrastructure task.

The main advantage ofCisco Intersightis itscloud-based architecture, which allows IT administrators tomanage infrastructure from any locationwithout 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.

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.

Component to configure→ interface

Interface type→ FastEthernet

Port→ 1

Slot→ 0

This command structure is part of theDevice Configuration and Verificationsection in the FLDTEC course. It teaches how to navigate and configure interfaces on Ciscodevices using the IOS CLI:

interface is the global configuration mode command to begin configuring a network interface.

FastEthernet specifies thetype of interface(could also be GigabitEthernet, Serial, etc.).

0/1 represents theslot/portstructure used on Cisco devices:

The first digit (before the slash) is theslot number.

The second digit (after the slash) is theport numberwithin that slot.

This structure allows Cisco to modularly address interfaces, especially in devices with multiple slots or module-based configurations.

During the boot process of Cisco devices runningNX-OS, pressingCtrl-Cat the right time will interrupt the boot sequence and bring the system to theboot loader or ROMmon mode(commonly referred to as the boot prompt).

This allows a technician to perform low-level operations such as recovering passwords, specifying an alternate boot image, or performing diagnostics.

Other options (Ctrl-X, Ctrl-Z, Ctrl-1) are not used for interrupting the boot process in Cisco NX-OS platforms.

A speed mismatch occurs when two connected Ethernet devices are configured to operate at different speeds. In scenario A, one device is manually set to 1 Gbps, while the other is set to 100 Mbps. Since both ends are hard-coded to different speeds, they cannot successfully negotiate a common speed, leading to a mismatch and resulting in a failed or unstable link.​

In contrast, scenario B, where both ends are manually set to the same speed, ensures compatibility and stable communication. Scenario C can lead to a duplex mismatch rather than a speed mismatch; the auto-negotiating end may default to half-duplex if it cannot determine the duplex setting of the manually configured end. Scenario D is less common; if auto-negotiation fails, devices may revert to their lowest common speed, but this typically results in reduced performance rather than a complete mismatch.​