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Chapter 7
Managing a Cisco Internetwork
Remember how to ping a valid host ID. You can ping an IP address
from a router's user mode or privileged mode, but not from configuration
mode. You must ping a valid address, like 1.1.1.1. Examples of invalid
addresses are 192.168.10.0, 192.168.10.255, and 192.168.10.256. (See
Chapter 3 for information on IP addressing if you do not understand this.)
Key Terms
B
efore taking the exam, be sure you're familiar with the following terms:
Commands Used in This Chapter
T
he following list contains a summary of all the commands used in this
chapter:
boot sequence
random access memory (RAM)
CDP holdtime
read-only memory (ROM)
CDP timer
Telnet
configuration register
TFTP host
flash memory
Traceroute
Packet Internet Groper (Ping)
Command
Description
cdp enable
Turns on CDP on an individual interface
cdp holdtime
Changes the holdtime of CDP packets
cdp run
Turns on CDP on a router
cdp timer
Changes the CDP update timer
clear line
Clears a connection connected via Telnet to your
router
config-register
Tells the router how to boot and to change the
configuration register setting
copy flash tftp
Copies a file from flash memory to a TFTP host
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