October 23 2009
640-802 Dumps Questions 373 to 375
QUESTION 373
Why might the Certifyme network administrator set the configuration register to 0×2142 on a 2600 series Cisco
router?
A. To boot the IOS from ROM
B. To reset the console password
C. To upload a new version of the configuration file
D. To upload a new version of the IOS
E. To allow a new memory upgrade to be recognized by the router
Answer: B
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
Explanation:
About 99 percent of the time someone uses a config-register, it’s more than likely because of a lost router
password. The two config-registers for recovering passwords are 0×2102 and 0×2142.
The first config-register, 0×2102, is the normal config-register if you boot the router from internal Flash. You
can see this config-register by using the show version command.
In this output, you’ll notice the last line says, “Configuration register is 0×2102.” This is normal.
But let’s say you forgot the router’s password. To recover this password (as long as it’s unencrypted), boot the
router and bypass the startup-config using config-register 0×2142; you should then be able to see the
password in the startup-config. You can use the same method for encrypted passwords, but you’ll need to
overwrite the original password with a new one. To change the configuration register, enter the following:
Router(config)# config-register 0×2142 This will instruct the router to bypass the configuration and boot up as if
it were a brand new router using factory default settings.
QUESTION 374
After making some network changes you power off and then power on your Cisco router named CM1. What
sequence of events occurs when CM1 is powered up?
A. Perform POST, locate configuration statements, apply configuration statements, locate Cisco IOS software,
and load Cisco IOS software.
B. Locate Cisco IOS software, load Cisco IOS software, locate configuration statements, apply configuration
statements, and perform POST.
C. Test software routines, POST, load configuration files, load Cisco IOS software, test Cisco IOS software.
D. Perform POST, locate Cisco IOS software, load the Cisco IOS software, locate configuration statements,
and apply configuration statements.
E. Load and test IOS, load configuration files, test software routines, POST.
F. None of the above
Answer: D
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
Explanation:
Upon initial start up, Cisco routers perform the following steps in order:
1. The router performs a power-on self-test (POST) to discover and verify the hardware.
2. The router loads and runs bootstrap code from ROM.
3. The router finds the IOS or other software and loads it.
4. The router finds the configuration file and loads it into running config.
QUESTION 375
You are the network administrator at Certifyme. You need to perform password recovery on Router CM1. What
must you modify in the password recovery process? (Choose two.)
A. Configuration register
B. NVRAM
C. Boot flash
D. CMOS
E. Flash
Answer: AB
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
Explanation:
Recovering a Lost Password This section describes how to recover a lost enable
password and how to enter a new enable secret password.
Password recovery consists of the following major processes:
Determining the Configuration Register Value 1. With this process, you determine the configuration of the
router, so that you may
restore the configuration after the password is recovered.
Resetting the Router 1. With this process, you reconfigure the router to its initial startup configuration. You
then display the enable password, if one is used.
Resetting the Password 1. If you are using an enable secret password, you enter a new password with this
process.
You then restore the router to its prior configuration.
Resetting the Configuration Register Value 1. If you are using an enable password, you use this process to
restore the router to its
prior configuration.
