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

These command associations are part of Cisco IOS essentials taught in FLDTEC's "Device Configuration and Verification" topic. Here's how each command functions:

show running-config

Displays the active configuration stored in RAM.

This command is used to verify the current settings on a Cisco device.

copy running-config startup-config

Saves the current running configuration to NVRAM, ensuring the configuration persists after a reboot.

This is critical after making changes to devicesettings.

copy tftp: running-config

Loads a configuration from a TFTP server and applies it to the current running configuration.

Often used during remote device setup or restoration.

copy usbflash0:backup.cfg running-config

Restores a saved configuration file from a USB drive.

Useful in field operations where physical backup media is used during maintenance.

These tasks are routine for field technicians performing configuration backups, restorations, and diagnostics in Cisco environments.

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.​

Cisco Unified Communications Manager (CUCM) is typically deployed onCisco UCS C-Series servers. These rack-mount servers provide the necessary computing resources to support CUCM's call control and session management functions in enterprise environments. The UCS C-Series servers offer scalability, reliability, and integration capabilities essential for unified communications deployments.​

Options A (Cisco ASR routers), B (Cisco Catalyst switches), and C (Cisco ISR routers) are networking devices designed for routing and switching functions and are not intended as platforms for deploying CUCM.​

TheFLDTECtraining describes theTCP/IP encapsulationas a step-by-step process where data is passed down through the layers of the TCP/IP model:

Application Layer: User data is created (email, file, request) and the application layeradds the application header, creating a data payload.

Transport Layer: The data is segmented. Each segment receives a transport-layer header (TCP/UDP), enabling proper sequencing and error handling at the destination.

Internet Layer: Segments are encapsulated intopackets(IP datagrams), with an IPheader added to facilitate routing between networks.

Link Layer: Finally, packets are framed with Layer 2 headers and trailers (including theFrame Check Sequencefor error detection), creating aframeready to be transmitted on the physical medium.

This layered encapsulation ensuresinteroperabilityandtroubleshooting clarity, which is why it is emphasized inFLDTEC’s IOS Software Basics module.

Theserial numberfor Cisco switches is typically found on a label located on therear panel near the power supplies. This positioning allows technicians to quickly access identification information even when the device is not powered on.

This label is essential for inventory tracking, RMA procedures, and registration for support. Serial numbers are not typically placed on the top or bottom surfaces for devices mounted in a rack, as those areas are less accessible.

Kickstart Image→ Specialized bootloader that initializes the hardware

System Image→ Contains the full NX-OS kernel and operating system

Global configuration command mode→ Provides access to the broadest range of commands that affect the device as a whole

EXEC command mode→ Allows for displaying device status and configuration information

This knowledge is covered underCisco IOS/NX-OS Software Basicsin the FLDTEC training:

Kickstart Image:Alightweight bootloader image that initializes hardware and launches the system image. It's comparable to ROMMON in traditional IOS devices.

System Image:Includes the full NX-OS operating system, services, drivers, and kernel required to run the device.

Global Configuration Mode:After entering privileged EXEC mode (enable), this mode allows changes to system-wide settings such as interfaces, routing protocols, and VLANs.

EXEC Mode:Has two levels—User EXECandPrivileged EXEC. User EXEC provides limited diagnostic commands, while Privileged EXEC allows more extensive system views (show commands, reload, etc.).

Understanding these layers is essential when maintaining or restoring NX-OS devices in field environments.