Term
| What cabling and settings (Baud Rate, Data Bits, Parity, Stop Bits, Flow Control) are used for a terminal session to the console port? |
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Definition
Cabling: Rollover
Baud Rat: 9600
Data Bits: 8
Parity: None
Stop Bits: 1
Flow Control: None
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Term
Name the acronym: NVRAM What is it's characteristics and what is typically stored there? |
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Definition
Non-Volatile RAM Does not lose data stored on it when power is off. Used to store the startup configuration |
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Term
| What are the basic steps of the boot process? |
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Definition
1. POST runs basic inventory/test of hardware 2. Bootstrap/RXBoot/Rommon used to find the IOS 3. IOS loaded to RAM 4. Startup configuration or remote configuration found 5. Configuration loaded to RAM as running config
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Term
| What is the process used to find the IOS image to load during bootup? |
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Definition
Following steps are followed until valid IOS is found:
1. Checks config-register (assuming 0x2102)
2. Bootstrap checks the startup-config in NVRAM for boot system commands.
3. Device looks for the first IOS image in flash.
4. Broadcast for TFTP server.
5. Load RXBoot mini-IOS (used to manually connect to TFTP server)
6. ROMMON mode loaded (used to manually load/TFTP an image) |
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Term
| What is the process for loading the configuration at bootup? |
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Definition
Following steps are attempted until one is successful:
1. If startup-config is in NVRAM, it is copied as the running config 2. Broadcast for TFTP server for a configuration file 3. Launch setup mode
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Term
| What are the ways to exit setup mode? |
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Definition
Crtl+C Answer "no" when asked to enter initial configuration dialog or when prompted to save at the end |
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Term
Describe the effects of the following config register settings:
0x2100
0x2101
0x2102
0x2142 |
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Definition
0x2100 : always boot to ROMMON
0x2101 : always boot to RXBOOT
0x2102 : Boot as per startup config. If no startup config, boot to first image in flash (0x210n = boot to nth image)
0x2142 : do not load startup-config during boot |
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Term
| What is the process to force boot into ROMMON mode? |
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Definition
1. Connect via console port 2. Power cycle the device 3. Ctrl+Break at the start of boot sequence |
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Term
| What is the process to run password recovery for a Cisco device? |
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Definition
Boot/break into ROMMON mode via console
Set "confreg 0x2142" (skip check for startup config)
Reload & exit from setup mode
"copy start run"
Change or set passwords
"copy run start"
Set "config-register 0x2102"
Reload
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Term
| What differs "enable secret" from "enable password" |
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Definition
| "enable secret" is encrypted while "enable password" stored as plain text |
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Term
| What IOS command will apply encryption to passwords for console, vty/tty lines? |
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Definition
| service password-encryption |
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Term
| What is the process to enable SSH on IOS? |
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Definition
1. configure "username xxx password yyy" 2. setup "ip domain-name zzz" 3. run "crypto key generate rsa" 4. apply "login local" and "transport input ssh" on the vty lines
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Term
What is the name format for IOS image files?
Eg. C2500-D-L.120-9.bin |
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Definition
[platform]-[feature set]-[run location|compression].[version]
Eg. C2500-D-L.120-9.bin
Platform: C2500
Feature Set: D
Run Location: L
IOS version: 12.0(9) |
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Term
Name the telnet session commands to:
determine existing sessions
resume the last session
resume a specific session
disconnect the last session
close an active session
suspend a session
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Definition
determine existing sessions: "show sessions"
resume session: Enter, "resume", "resume [session|host|ip]"
disconnect the last session: disconnect
close an active session: "exit"
suspend a session: Ctrl+Shift+6, x |
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Term
| What is the command(s) to view L3 information obtained by CDP? |
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Definition
"show cdp neighbors detail" (functionally equivalent to "show cdp entry * ") |
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Term
| What are the options available with a non-extended ping command? |
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Definition
| protocol, destination IP, repeat count, datagram size, timeout (seconds) |
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Term
| What additional options are available with an extended ping command? |
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Definition
Source IP/interface, Type of Service, DF bit, validate reply, data pattern (hex), loose/strict/record/timstamp/verbose, sweep range of sizes |
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Term
| What procedure is used to connect to a factory default SDM installation for initial config? |
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Definition
1. crossover cable connects PC to Gig0/0
2. point browser to http://10.10.10.1
3. login credentials are cisco/cisco |
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Term
| What information does CDP supply about a neighboring device? |
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Definition
Device Identifier (eg. hostname)
Port Identifier (port/interface)
Address list (L3 and L2)
Capabilities list
Platform
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Term
| What exec level command sends pings to each device on the path to a destination host? |
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Definition
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Term
| What is the command to view the previous commands entered in IOS? |
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Definition
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