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94 Cards in this Set
- Front
- Back
What are the 4 steps in the Router's boot process?
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1. Test Hardware (POST)
2. Load bootstrap program 3. Locate and load Cisco IOS 4. Locate and Load the router configuration file |
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What does POST stand for?
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Power On Self Test
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Where is POST stored?
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ROM
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What is the purpose of POST?
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Its a Diagnostic Test used to Check Hardware Operations.
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What does "rommon>" stand for?
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ROM Monitor
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What is loaded in the router configuration file?
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startup-config
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What are the 2 ways to revert back to the startup-config?
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- Reboot the router manually
- Restart the router with the "reload" command. |
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What is the purpose of having a TFTP server when working with routers? (2)
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- Transfer IOS Image
- Transfer Router Configurations |
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What does TFTP stand for?
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Trivial File Transfer Protocol
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What does the fallowing Command do?
copy run tftp |
copy running configurations to in RAM to TFTP server
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What does the fallowing Command do?
copy start tftp |
Copy startup configuration in NVRAM to TFTP Server
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What does the fallowing Command do?
copy tftp run |
copy a configuration from tftp server into the running configuration of the router
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What does the fallowing Command do?
copy tftp start |
copy a configuration from tftp server into the startup configuration of the router
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What does the fallowing Command do?
copy run start |
copy the running config to the startup config
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What does the fallowing Command do?
copy start run |
copy the startup config to the running config
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What does the fallowing Command do?
copy flash tftp |
copy the IOS from router to a TFTP server
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What does the fallowing Command do?
copy tftp flash |
copy an IOS image from the tftp server into the routers flash
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What does the fallowing Command do?
config t |
configure the router
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What does the fallowing Command do?
config memory |
pull config info from nvram
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What does the fallowing Command do?
config network |
load working config from tftp server
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What does the fallowing Command do?
config overwrite-network |
overwrite nvram, startup, with info from tftp server
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What does the fallowing Command do?
erase start |
erase the startup config
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what does DCE stand for?
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Data communcation equipment
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what serial connection needs to be configured with the clockrate?
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DCE
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what does the "no shutdown" command do?
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enable the interface
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what are the 5 ways to test a connection?
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-Telnet
-Ping -Trace -Show ip route -Show interfaces |
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What layer of the OSI model does the fallowing command reside at?
Telnet |
Application layer
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What layer of the OSI model does the fallowing command reside at?
Ping |
Network Layer
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What layer of the OSI model does the fallowing command reside at?
Trace |
Network Layer
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What layer of the OSI model does the fallowing command reside at?
show ip route |
Network Layer
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What layer of the OSI model does the fallowing command reside at?
show interfaces |
Datalink & Physical Layer
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What layer of the TCP/ IP model does the fallowing command reside at?
Telnet |
Application Layer
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What layer of the TCP/ IP model does the fallowing command reside at?
Ping |
Internetwork Layer
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What layer of the TCP/ IP model does the fallowing command reside at?
Trace |
Internetwork Layer
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What layer of the TCP/ IP model does the fallowing command reside at?
show ip route |
Internetwork Layer
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What layer of the TCP/ IP model does the fallowing command reside at?
show interfaces |
Network Interface Layer
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What is Telnet? (2)
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- A utility that connects at the highest layer of the OSI model
- Provides remote access to devices |
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How does Telnet access a router?
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via Virtual Terminal Ports (VTY)
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What is the purpose of the "IP Hostname" function?
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Replace the IP address making it better to remember
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what is the command for setting an IP Hostname?
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router(config)#ip host router69 192.168.5.1
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What is the command to view the "name table" on a router?
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router#show hosts
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What is the command to disable a pre-set hostname?
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router(config)#no ip host router69 192.168.5.1
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What is the command to give a server a hostname on router?
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router(config)#ip name-server 172.33.44.1
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How does the Ping command work?
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sends an echo request packet to teh destination and wiats for an echo reply through ICMP messages.
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How many packets does Ping send by default?
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5
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How many possible replies can be returned with Ping?
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7
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What does the fallowing "ping" reply mean?
! |
Successful receipt of the ICMP echo
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What does the fallowing "ping" reply mean?
. |
Request Timed Out
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What does the fallowing "ping" reply mean?
U |
Destination was unreachable
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What does the fallowing "ping" reply mean?
C |
Congestion experienced
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What does the fallowing "ping" reply mean?
I (i) |
ping interrupted
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What does the fallowing "ping" reply mean?
? |
Packet type unknown
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What does the fallowing "ping" reply mean?
& |
Packet TTL exceeded
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what are the other 4 values returned after a ping?
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- Quantity of ICMP packets sent
- Timeout Duration - Transfer Success Rate - Minimum, Average and Max round trip times for the ICMP packets sent. |
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what is the process for using the "extended ping" command?
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router>ping
Then configure the rest of your ping commands |
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what are 3 possible setting you can configure well using the "extended ping" command?
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- Protocol type
- size of the ping packets - number of packets sent |
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How does the Trace command work? (2)
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- sends multiple ICMP packets with higher TTL counters until the packet reaches the destination.
- replies are requested at each hop along the way. |
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what does the fallowing 'trace' command mean?
!H |
a router received, but did not forward
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what does the fallowing 'trace' command mean?
P |
Protocol unreachable
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what does the fallowing 'trace' command mean?
N |
Network unreachable
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what does the fallowing 'trace' command mean?
U |
Port unreachable
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what does the fallowing 'trace' command mean?
* |
request timed out
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What does the fallowing command do?
show ip route |
Show the routing table on given router
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what is the purpose of the 'debug' command?
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obtain information from router and allow you to troubleshoot particular protocols
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What does the fallowing command do?
debug all |
starts the debug process
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how to you turn debug off?
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no debug all
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what does CDP stand for?
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cisco discovery protocol
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what is the command to view directly connected cisco devices?
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show cdp neighbors
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what is the command to disable the view of neighbor cisco devices?
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no cdp neighbors
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what is the command to disable cdp on 1 port?
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(need to be under interface config)
no cdp enable |
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what are 3 boot functions in teh configuration register?
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- force bootstrap
- load IOS from ROM - load IOS from TFTP server |
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what is the command to examine the configuration register?
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show version
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what are 3 configuration register hexadecimal codes?
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0x2100
0x2101 0x2102 |
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what does the fallowing hexadecimal code mean?
0x2100 |
Boot into ROM monitor mode
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what does the fallowing hexadecimal code mean?
0x2101 |
Boot helper image from ROM
(RxBoot Mode) |
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what does the fallowing hexadecimal code mean?
0x2102 |
Check startup config file in NVRAM for boot system commands. load IOS from flash if nothing else is specified.
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what is ROM Monitor Mode?
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the bootstrap program that is built into the firmware of the router.
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what does Rom Monitor Mode do? (2)
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- initializes the hardware
- load the IOS |
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What are 2 things ROM monitor mode can be used for?
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- perform diagnostics
- recover passwords |
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what does the fallowing prompt mean?
rommon> |
ROM Monitor Mode
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what 2 keys can be pressed to enter ROM Monitor Mode?
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Ctrl + Break
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what is the command to have your router load in ROM Monitor Mode?
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config-register 0x2100
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what is the command to have your router load in RxBoot mode?
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config-register 0x2101
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what is RxBoot mode used for?
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load limited version of IOS from ROM
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what is the fallowing an example of?
"c2600-i-mz.123-15b.bin" |
IOS filename on TFTP server
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what is the command to boot IOS file from a TFTP server?
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router(config)# boot system tftp c2600-i-mz.123-15b.bin
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What does SDM stand for and what does it do?
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Security Device Manager
- web-based tool implement and test security configurations |
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what 2 keys can be pressed to enter ROM Monitor Mode?
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Ctrl + Break
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what is the command to have your router load in ROM Monitor Mode?
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config-register 0x2100
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what is the command to have your router load in RxBoot mode?
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config-register 0x2101
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what is RxBoot mode used for?
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load limited version of IOS from ROM
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what is the fallowing an example of?
"c2600-i-mz.123-15b.bin" |
IOS filename on TFTP server
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what is the command to boot IOS file from a TFTP server?
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router(config)# boot system tftp c2600-i-mz.123-15b.bin
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What does SDM stand for and what does it do?
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Security Device Manager
- web-based tool implement and test security configurations |