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28 Cards in this Set

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