Which OS is not designed for smartphones and PDAs? a. Android b. Symbian c. Mac OS X d. Windows Mobile What utility program reduces a file size by as much as 80 percent by substituting short codes for...

Which OS is not designed for smartphones and PDAs?

a. Android b. Symbian

c. Mac OS X d. Windows Mobile

What utility program reduces a file size by as much as 80 percent by substituting short codes for lengthy data patterns?

a. Defragmentation b. Compression

c. Interrupt d. Cleanup