Network+ N10-009 · AP Networking · Hands-on lab

Down Link: Find and Fix the Dead Drop

N10-009 5.2 AP NET 2.1.A AP NET 1.1.B AP NET 4.2.C

Ticket #4471 — site: Meridian Outfitters HQ

A clerk at FRONT-PC reports that the back-room workstation STOCK-PC stopped responding this morning — files on it won't open and it can't be reached across the floor. Nothing was reconfigured; a cleaning crew was in the wiring closet overnight. You're plugged into the access switch from your diagnostic laptop TECH-LT. Find the fault at the lowest layer first, fix it, and verify.

Single flat subnet · all hosts 10.20.5.0/24 · gateway 10.20.5.1

LocationHostIPv4Switchport
Wiring closetTECH-LT10.20.5.9Gi1/0/1
Front counterFRONT-PC10.20.5.40Gi1/0/2
Admin deskADMIN-PC10.20.5.50Gi1/0/3
Lead officeLEAD-PC10.20.5.51Gi1/0/4
Back roomSTOCK-PC10.20.5.41Gi1/0/5

Switch ACC-SW1 — port & link status

ACC-SW1 access switch · 10.20.5.2
No port selected. Click a switchport, or run show ports in the console.

TECH-LT — diagnostic console

tech-lt:~ — net-diag shell
tech-lt$

Commands: help · ping <host|ip> · ipconfig · show ports · cabletest <port#> · clear

Patch cabling & spares shelf

Gi1/0/5 → STOCK-PC drop (back room)
Installed cable: original Cat6 patch — under test
LINK DOWN
Known-good spares on the shelf
Cat6 patch cable · 7 ft
Factory-terminated, tested good. Correct media for a copper Ethernet drop.
1000BASE-SX SFP module
Fiber transceiver. Stock for the uplink shelf.

Lab tasks

    Check your understanding

    Score 0/9

    Use a pseudonym — no real names. Your instructor maps callsigns to students on a separate roster.

    © 2026 <AUTHOR / ORG NAME>. All rights reserved — replace before distribution. Original clean-room lab built from the public N10-009 objectives and the public AP Networking framework. Bundled: html2canvas (MIT). Tags — N10-009 5.2 (provisional); AP Networking 2.1.A / 1.1.B / 4.2.C.