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15 Cards in this Set
- Front
- Back
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List the types of memory on a Cisco switch (or router)
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ROM
Flash memory NVRAM VRAM (aka RAM) |
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Where is the IOS stored on a switch?
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IOS is stored in Flash Memory
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What is located in the switch ROM?
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Switch ROM
POST Bootstrap (boot loader) RX-boot ROM monitor |
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Where is the startup config stored?
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Startup-config is in NVRAM
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Where is the running-config stored?
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running-config is "stored" in RAM (VRAM)
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What is the configuration register?
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A 16-bit value stored in NVRAM that controls how the switch/router boots
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Where should the switch/router normally boot from?
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Normally boot from IOS in Flash.
Config register = 0x2102 |
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How will switch/router boot if config register = 0x2102?
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0x2102 means switch boots from IOS in Flash
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How will switch boot if config register = 0x2101?
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0x2101 means boot from ROM.
This is a Rx-boot from mini-OS in ROM, results in prompt router(boot)> |
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How will router boot if config register = 0x2100?
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0x2100
Router boots to ROMMON rommon> ROM monitor mode |
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Describe the bits in the config register
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Config register is 16 bits with the right-most 4-bits being the boot field.
Bit numbers 0-3 |
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Why would router boot to the following prompt?
router(boot)> |
router(boot)> prompt indicates router did a RX-boot = booted from mini-IOS in ROM.
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How will router boot if config register = 0x2102?
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0x2102
Router boots normally (from IOS in Flash) |
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Why would router boot to the following prompt?
rommon> |
rommon>
ROM Monitor mode 0x2100 |
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What command displays the config register setting?
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show version
to display configuration register |
