Cisco Certified Field Technician (CCT) 800-150 Reddit Questions

In the context ofWide Area Networks (WANs), the key objective is to connect geographically separated networks using service provider infrastructure. The FLDTEC course emphasizes that WAN environments typically involve devices that can handle different physical transmission mediums and protocols.

Modems:

Modulate and demodulate analog signals to digital signals.

Used in WAN environments to connect over analog lines like DSL or leased lines.

Essential for interfacing between digital routers and analog telephone networks.

Optical Fiber Converters:

Also known asmedia converters, they are used to convert electrical signals to optical signals (and vice versa) for fiber transmission.

Common in WAN scenarios where long-distance high-speed transmission over fiber is required.

Incorrect Options:

A. Hubs: Obsolete Layer 1 devices used in LANs, not suitable for WANs.

D. Network Interface Cards (NICs): Used in end devices for LAN connectivity.

E. Wireless Access Points: Typically used in WLANs within local premises, not WAN infrastructure.

This aligns withCisco’s WAN architecture fundamentalsas highlighted in FLDTEC under “Cisco Equipment and Related Hardware.”

Theshow interface statuscommand offers a succinct overview of switch port characteristics, including:​

Port ID

VLAN assignment

Duplex mode

Speed

Media type​

This command is particularly useful for quickly assessing theoperational status and configuration of switch ports, aiding in troubleshooting and verification tasks.​

In contrast:​

show cdp neighborsdisplays information about directly connected Cisco devices.

show controllersprovides low-level hardware information.

show ip interface briefoffers a summary of IP-related interface information.​

To back up the startup configuration of a Cisco device to a USB drive, the commandcopy startup-config usbflash0:[filename]is used. This command copies the contents of the startup configuration file stored in NVRAM to a specified file on the USB flash drive. This is particularly useful for creating backups before performing upgrades or replacements.​Option A:Copies the startup configuration to a TFTP server, not a USB drive.

Option B:Attempts to copy from the USB drive to the startup configuration, which is the reverse of the desired operation.

Option D:Copies the running configuration, not the startup configuration, to the USB drive.​

Integrates multiple network layers into a single infrastructure → Unified Fabric

Provides link aggregation and redundancy between switches → Virtual port channels (vPCs)

Enables software-defined networking in data centers → Application Centric Infrastructure (ACI)

Combines storage and network traffic on a single network → Fibre Channel over Ethernet (FCoE)

These data center solutions are covered in theFLDTEC courseunder Cisco’s unified data center architecture and switching portfolio:

Unified Fabric:Streamlines Layer 2 and Layer 3 into a single operational model, reducing complexity and enhancing scalability.

vPC (Virtual Port Channel): Allows two Nexus switches to appear as one logical switch, enablingloop-free topologyandactive-active uplinks.

ACI (Application Centric Infrastructure): Cisco’s SDN solution, delivering centralized automation, policy enforcement, and fabric management.

FCoE: Enableslossless Ethernetforstorage (Fibre Channel)traffic to coexist withdatatraffic on the same Ethernet infrastructure.

These technologies are fundamental in modern Cisco-powered data centers tooptimize performance,reduce hardware, andsimplify management.