Cisco 800-150 - Supporting Cisco Devices for Field Technicians (FLDTEC)

Cisco UCS E-Series serversare integrated, blade-style compute modules that can be installed insideCisco ISR(Integrated Services Routers). Their primary advantage is toprovide local compute resources in branch officeswithout needing a full data center environment.

This enables:

Hosting of virtual machines or applications locally

Reduced latency for edge computing

Lowered dependency on central data center resources

These servers are ideal for runningbranch-office workloads, virtualization, or edge analytics, allowing enterprises to deploy scalable compute capabilities closer to the data source.

Cisco 8000Series routers are primarily designed for service provider and web-scale networks, offering high-performance routing capabilities to handle large-scale, high-bandwidth environments typically found in service provider infrastructures and data centers.

The Cisco 8000 Series routers are part of Cisco’s high-performance routing portfolio. As documented in the official Cisco product and FLDTEC study materials:

Cisco 8000 Series routers are purpose-built for service provider and cloud-scale datacenters.

They are designed to support massive bandwidth, 5G core, and edge routing demands.

These routers provide scalable, high-performance architecture, using Cisco Silicon One ASICs, enabling terabits of throughput with advanced telemetry and network programmability.

Why the other options are incorrect:

A. Remote branches and retail typically use ISR/ASR 1000/1100 Series.

C. Home or small business networks use Cisco RV Series or Meraki MX Series.

D. LAN access/distribution layers in campuses commonly use Catalyst 9000 Series switches or ISR routers, not high-end core routers.

The 8000 Series is typically found in service provider core, data center interconnect, and hyperscale cloud deployments (e.g., Google, Meta, AWS).

After disconnecting the network cable from an SFP transceiver, theimmediate next step is to reinstall the dust plugsinto 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.

In wireless networking, theBasic Service Area (BSA)refers to the physical area of radio frequency coverage provided by an access point (AP) in a Basic Service Set (BSS). The BSA defines the coverage area where wireless clients can connect to the network through the AP. The size and shape of a BSA depend on various factors, including the AP's transmit power, antenna type, and physical environment.​

Option A, the Service Set Identifier (SSID), is the network name broadcast by the AP. Option C, Wireless LAN (WLAN), refers to the overall wireless network. Option D, Wireless LAN Controller (WLC), is a device that manages multiple APs in a network.​

Right-To-Use (RTU) licensesare locally managed licenses that allow users to activate specific features on Cisco devices without the need for external tools or connectivity to Cisco's licensing infrastructure. These licenses operate on an honor-based system, where the user agrees to comply with the licensing terms without mandatory enforcement mechanisms.​

In contrast:​

Hybrid licensescombine aspects of traditional and smart licensing models.

PAK (Product Authorization Key) licensesrequire registration and activation through Cisco's licensing portal.

Smart licensesnecessitate communication with Cisco's Smart Licensing servers for activation and management.​

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.​

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 to0x2142, 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, typically0x2102.​

When diagnosing network connectivity issues between a Windows PC and a Cisco device, the combination ofipconfig /allandpingcommands provides comprehensive information:​

ipconfig /all:Displays detailed IP configuration information, including IP addresses, subnet masks, default gateways, DNS servers, and MAC addresses for all network adapters. This information is crucial for verifying correct network settings.​

ping:Tests the reachability of a host on an IP network and measures the round-trip time for messages sent from the originating host to a destination computer. It's a fundamental tool for checking connectivity between devices.​

While other commands likenetstat,tracert,nslookup,arp -a, androute printprovide valuable information,ipconfig /allandpingare typically the first and most informative commands used in initial troubleshooting steps.​

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 to0x2142. 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.​