Free Preparation Discussions
MENU
Cisco Exam 100-490 Topic 4 Question 50 Discussion
Topic #: 4
To which value is the configuration register changed to bypass the loading of the startup configuration when performing a password recovery on a Cisco device?
The configuration register on Cisco devices controls how the device boots up. By changing the configuration register to 0x2142, you instruct the router to bypass the startup configuration file stored in NVRAM. This is crucial in the password recovery process because the passwords are stored in this configuration file.
Procedure for Password Recovery:
1. Break the boot sequence: Power cycle the router (turn off/on). During the boot process, send a 'Break' signal to get into ROMmon mode.
2. Change the configuration register: In ROMmon mode, type confreg 0x2142 and reload the router.
3. Boot without startup-config: The router will boot up, ignoring the saved startup configuration, allowing you to enter privileged EXEC mode without a password.
4. Change the password: Access configuration mode (configure terminal), and change the passwords as needed (enable password, enable secret, etc.).
5. Reset the configuration register: Set the configuration register back to its original value (usually 0x2102).
6. Save changes: Save the new configuration with copy running-config startup-config.
Denise
2 months agoFiliberto
2 months agoKallie
2 months agoAnnita
2 months agoThomasena
2 months agoGearldine
3 months agoFelicidad
3 months agoJose
15 days agoStefania
16 days agoJessenia
17 days agoSherita
18 days agoFletcher
19 days agoEun
20 days agoMyrtie
22 days agoLouisa
23 days agoGwenn
1 months agoAllene
2 months agoNancey
2 months agoLavera
2 months agoBrunilda
3 months agoCharolette
3 months agoVincenza
2 months agoAlexis
2 months agoMarti
3 months agoMargret
3 months agoJesusita
3 months agoTiera
2 months agoGoldie
2 months agoElvera
3 months agoSusy
3 months agoAshley
3 months ago