| A | B |
|---|
| Caching | One method of increasing the memory-access speed of a computer. |
| True | There are many different types of caches |
| Caching | Allows you to perform computer tasks more rapidly. |
| Maximum size | that is much smaller than the larger storage area. |
| Multiple layers | It is possible to have __________of cache. |
| Convention processors | Use level 2 cache on the motherboard and connect to it using the standard memory bus arrangement. |
| Independent, non interfering bus | Each cache has ___________ to service it. |
| Internet connection | is a part oc a cache subsystem |
| Peripherals | Cache can be built directly on _________. |
| Without L1 and L2 caches | an access to the main memory takes 60 nanoseconds, or about 30 wasted cycles accessing memory. |
| Example of Internet Caching | The first time you aske for HTML page, browser resends it, and copy it on your hard drive. It is cached. |
| Example of Peripheral caching | When the computer asks for data from the hard disk, the hard-disk controller checks into this memory before moving the mechanical parts of the hard disk. It it finds the data there, it will return the data stored in the cache saving lots of time. |
| L1 cache | Memory accesses at full microprocessor speed. (10 nanoseconds, 4 kilobytes to 16 kilobytes in size |
| L2 cache | Memory access of type RAM (around 60 nanoseconds, 32 megabytes to 128 megabytes in size) |
| Hard disk | Mechanical slow (around 12 milliseconds, 1 gigabyte to 10 gigabytes in size) |
| Internet | Incredible slow ( between 1 second and 3 days, unlimited size) |
