COA_Ch06_Pretest

_______ memory allows data to be both read from and written to easily and rapidly.

• EPROM
• ROM
• RAM
• PROM

The basic difference between RAM and ROM memory is:

• RAM is nonvolatile while ROM is volatile
• RAM is read/write while ROM Is read only
• ROM is used to store programs and data, while RAM is not
• ROM is typically specified when you buy a computer; RAM is not

Examples of secondary memory include:

• ROM, PROM, and EROM
• main memory and cache
• magnetic disk drives and solid state memory
• optical jukeboxes and tape libraries

“Locality of reference” refers to:

• data always being in cache
• programs always referencing data in RAM
• clustering of memory references
• the requirement that forces us to use a large amount of expensive memory

Which of the following types of memory has the longest (slowest) access time?

• cache memory
• main memory
• secondary memory
• registers

If a cache access requires one clock cycle and dealing with cache misses requires an additional five clock cycles, which of the following cache hit rates results in an effective access time of 2 clock cycles?

• 70%
• 80%
• 85%
• 90%
• 95%

The average time required to reach a memory storage location and retrieve its contents is called:

• latency
• response time
• hit time
• effective access time

The main memory in a desktop personal computer is made of:

• ROM
• RAM
• cache
• none of the above

Cache memory is typically positioned between:

• the CPU and RAM
• the CPU and the hard drive
• ROM and RAM
• none of the above

Information can be retrieved fastest from:

• hard disk (SSD)
• magnetic tape
• optical disk
• USB flash drive