She checked her cables. Fine. She checked the IP addresses. Correct. She re-read the PDF’s note: “Remember: switches are transparent by default, but VLAN 1 is not your friend in production.”
Years later, when a new intern asked how to prepare for the CCNA, Elena smiled. She handed over the same PDF— Guia de Laboratorios CCNA 200-301 Versión 7.1 —and said the same words Joaquín once told her:
On exam day, the proctor handed her a scratch sheet. The first simulation question was a disaster: a broken EIGRP configuration with mismatched AS numbers. Her hands didn’t shake. She had done this exact fix in Lab 5.3 of the Guia de Laboratorios .
“Forget the theory for a while,” Joaquín said. “Inside that drive is a file: Guia_de_Laboratorios_CCNA_200-301_v7.1.pdf . It’s not a novel. It’s a map.” guia de laboratorios ccna 200-301 version 7.1 pdf
!!!!! Success rate is 100 percent.
She didn’t just pass the lab. She had a breakthrough.
..... Success rate is 0 percent.
One night, she tried to cheat. She looked up the answer key online. But the PDF had no answers—only objectives. Joaquín’s voice echoed in her head: “In the real world, the network doesn’t care if you passed the exam. It only cares if you can fix the problem.”
She passed with a 932.
Elena never threw away the USB drive. She added her own notes to the PDF: “For Lab 2.4, use ‘show interfaces trunk’ first.” “For Lab 6.8, don’t forget the ‘ip nat inside source list’ command.” She checked her cables
Lab 1.1 was deceptively simple: connect two switches and one router. Assign IPs. Make them talk.
That’s when she saw it. She had configured the access port on the wrong VLAN. The PC was on VLAN 10, but the router’s subinterface was listening on VLAN 1.