October 23 2009
640-802 Dumps Questions 361 to 363
QUESTION 361
You work as a network technician at Certifyme.com. Study the exhibit carefully. For what reasons have this
Certifyme router loaded its IOS image from the location that is shown? (Choose two)
A. Certifyme3 defaulted to ROMMON mode and laded the IOS image from a TFTP server
B. Cisco Routers will first attempt to load an image from TFTP for management purpose
C. Ruouter1 has specific boot system commands that instruct it to load IOS from a TFTP server
D. Certifyme3 is acting as a TFTP server fro other routers
E. Certifyme3 can’t locate valid IOS image in flash memory
Answer: CE
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
QUESTION 362
You work as a network technician at Certifyme.com. Study the exhibit carefully.
What will router CertifymeA do when it starts up next time?
A. start the limited IOS in ROM
B. start in ROM monitor mode
C. retrieve configuration information from the running-config file
D. look for startup instructions in NVRAM
E. load IOS from flash
Answer: B
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
Explanation:
RAM-Sometimes called DRAM for dynamic random-access memory, RAM is used by the router just as it is
used by any other computer: for working storage. The running or active configuration file is stored here.
ROM-This type of memory (read-only memory) stores a bootable IOS image, which typically is not used for
normal operation. ROM contains the code that is used to boot the router until the router knows where to get the
full IOS image or as a backup bootable image, in case there are problems.
Flash memory-Either an EEPROM or a PCMCIA card, Flash memory stores fully functional IOS images and is
the default location where the router gets its IOS at boot time. Flash memory also can be used to store any
other files, including configuration files.
NVRAM-Nonvolatile RAM stores the initial or startup configuration file.
IOS on a router uses a configuration file for the initial configuration at router startup and the active, running
configuration file. The startup configuration file is in NVRAM; the other file, which is in RAM, is the one that the
router uses during operation. When the router first comes up, the router copies the stored configuration file
from NVRAM into RAM, so the running and startup configuration files are identical at that point. Also, exterior
to the router, configuration files can be stored as ASCII text files anywhere using TFTP or FTP.
The boot process follows this basic litany:
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.
Two configuration tools tell the router what OS to load:
1. The configuration register 2. The boot system configuration command First, the configuration register tells
the router whether to use a full-featured IOS,ROMMON, or the limited-feature IOS, which also is called
RXBOOT mode. The configuration register is a 16-bit software register in the router, and its value is set using
the config-register global configuration command. (Some older routers had a hardware configuration register
with jumpers on the processor card, to set bits to a value of 0 or 1.) On most Cisco routers, the default
Configuration Register setting is hexadecimal 2102.
0×2102 : Default, which loads the IOS from Flash Memory 0×2100 : Boot the router in ROM Monitor Mode
0×2142: Boot the router bypassing the startup configuration
QUESTION 363
There are no boot system commands in the router configuration in NVRAM for router CM1. What is the fallback
sequence that the router CM1 will use to find an IOS during reload?
A. ROM, NVRAM, TFTP server
B. Flash, TFTP server, ROM
C. TFTP server, Flash, NVRAM
D. Flash, NVRAM, ROM
E. NVRAM, TFTP server, ROM
F. None of the above
Answer: B
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
