October 23 2009
640-802 Dumps Questions 364 to 366
QUESTION 364
During startup, router CM1 displays the following error message:
boot: cannot open “flash:”
What will CM1 do next?
A. It will attempt to locate the configuration file from a TFTP server. If this fails, it will initiate the setup dialog.
B. It will attempt to locate the IOS from a TFTP server. If this fails, it will load a limited IOS from ROM.
C. It will attempt to locate the configuration file from a TFTP server. If this fails, it will load a limited
configuration from ROM.
D. Because of damaged flash memory, the router will fail the POST.
E. It will attempt to locate the IOS from a TFTP server. If this fails, it will initiate the setup dialog.
F. None of the above
Answer: B
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
Explanation:
The boot sequence of a Cisco router is shown below:
Booting up the router and locating the Cisco IOS
1. POST (power on self test) 2. Bootstrap code executed 3. Check Configuration Register value (NVRAM)
which can be modified using the config-register command
0 = ROM Monitor mode 1 = ROM IOS 2 – 15 = startup-config in NVRAM
4. Startup-config file: Check for boot system commands (NVRAM) If boot system commands in startup-config
a. Run boot system commands in order they appear in startup-config to locate the IOS b. [If boot system
commands fail, use default fallback sequence to locate the IOS (Flash, TFTP, ROM)?] If no boot system
commands in startup-config use the default fallback sequence in locating the IOS:
a. Flash (sequential)
b. TFTP server (netboot) c. ROM (partial IOS) or keep retrying TFTP depending upon router model
5. If IOS is loaded, but there is no startup-config file, the router will use the default fallback sequence for
locating the IOS and then it will enter setup mode or the setup dialogue.
6. If no IOS can be loaded, the router will get the partial IOS version from ROM
Reference: http://www.svrops.com/svrops/documents/ciscoboot.htm
QUESTION 365
After logging into a router and typing in a few show commands, you press the up arrow key. What will this do?
A. It will recall the previous command line
B. It will move the cursor one line up
C. It will redisplay the current command line
D. It will capitalize the command line
E. None of the above
Answer: A
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
Explanation:
The up arrow key is used to recall the previous command line entry. The commands that were entered
previously can be displayed by repeatedly pressing the up arrow key, or by entering the “show history”
command.
QUESTION 366
After working on a router, some problems arise and you wish to view the commands that you recently entered.
Which IOS command opens the history buffer and displays the most recently entered commands?
A. Show history
B. Show buffers
C. Show typed commands
D. Show terminal buffer
E. Show command
F. None of the above
Answer: A
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
Explanation:
The router will buffer previously entered commands. By default, the “show history” command will display the
previous ten commands that were entered. To see the contents of the buffer you enter the show history
command.
Incorrect Answers:
B. This command will show the memory buffer information C, D. These are invalid commands.
