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28 Cards in this Set
- Front
- Back
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Where are instructions in the operating system executed?
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CPU
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What are the functions of the CPU
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System initialization, routing functions, and network interface control
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What is RAM used for?
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Routing tables , fast switching caches, configurations, and packet queues.
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Runtime space for executable cisco IOS software and its subsystems is provided by?
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RAM
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RAM is generally?
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Dynamic ramdom-access memory
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RAM can be upgraded with the addition of?
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Dual in-line memory modules
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Flash memory is used for storage of?
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A full Cisco IOS software image
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The router normally acquires the default IOS from
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FLASH
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IOS software images can be upgraded by?
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Loading new images into flash
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In most routers during the boot process an executable copy of the IOS is transferred to?
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RAM
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How can we upgrade flash?
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By adding flash in-line memory modules or PCMCIA
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When power is removed, NVRAM
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Retains its content
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What does system Bus transfer?
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Packets to and from the interfaces
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The CPU bus transfers?
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Instructions or data to and from specified memory addresses
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Where is the startup diagnostic code permamently stored?
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In ROM
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What is ROM monitor?
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The permanently stored diagnostic code
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The main tasks for ROM are?
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Hardware diagnostics and loading the CISCO IOS from flash to RAM during bootup
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ROM can be upgraded by?
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Replacing the ROM chips in the sockets
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Router connections to the outside are?
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Interfaces
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Three types of interfaces are?
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LANS, WANS, and console or auxiliary (AUX)
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LAN interfaces are one of several different varieties of?
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Ethernet or Token Ring
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WAN interfaces include?
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Serial, ISDN, and intergrated CSUs
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What are the functions of the CPU
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System initialization, routing functions, and network interface control
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RAM is usually logically devided into?
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Main processor memory and input/output (I/O) memory
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Shared I/O memory is shared among?
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Interfaces for temporary storage of packets.
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The contents of RAM are lost when?
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Power is removed
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RAM can be upgraded with the addition of?
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Dual in-line memory modules
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Where is the startup configuration stored?
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NVRAM
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