KAMSC Computer Science Comprehensive Exam
Questions Verified by Expert
0100 0001 - Answer A
what does bit stand for - Answer binary digit
what is a byte - Answer 8 bits of info; smallest unit of info storage; character
what comes after every 4th bit - Answer a space
what is information stored with - Answer on (1) and off (0) switches
what are we dependent on because of its speed and storage - Answer CPU
ASCII (american standard code for information interchange) - Answer - 8 bit code
- limited in permutation (2^8 possible arrangements)
- ex. ASCII code for A = 0100 0001
- code for microcomputers
EBCDIC (extended binary coded decimal interchange code) - Answer - 8 bit code
- codes for mainframes
- limited in permutation
unicode - Answer - 16 bit code
- 2^16 possibilities
- reason there are so many perms is because of all the symbols
how many codes in unicode and ASCII are the same - Answer the first 256
, kilobyte (KB) - Answer ~1000 bytes (actually 1024)
megabyte (MB) - Answer 1 million bytes (1024^2)
gigabyte (GB) - Answer 1 billion bytes
terabyte (TB) - Answer 1 trillion bytes
what are computers classified by - Answer size (NOT POWER)
microcomputers - Answer - fit on a desktop
- ex. pc, desktop, or laptop
minicomputers - Answer - size of desk
- ex. PDP8 or VAX
mainframes - Answer - ex. IBM
- much bigger than desk
supercomputers - Answer - largest
- fastest
why do we use octal and hex - Answer computers dont represent info in octal/hex, but the human mind
cant comprehend binary codes well so octal and hex are convenient for abbreviating binary code
true or false: base 10 is easy to convert - Answer false; base 10 is much more tedious to convert
true or false: base 10 is not a power of 2 - Answer true
Questions Verified by Expert
0100 0001 - Answer A
what does bit stand for - Answer binary digit
what is a byte - Answer 8 bits of info; smallest unit of info storage; character
what comes after every 4th bit - Answer a space
what is information stored with - Answer on (1) and off (0) switches
what are we dependent on because of its speed and storage - Answer CPU
ASCII (american standard code for information interchange) - Answer - 8 bit code
- limited in permutation (2^8 possible arrangements)
- ex. ASCII code for A = 0100 0001
- code for microcomputers
EBCDIC (extended binary coded decimal interchange code) - Answer - 8 bit code
- codes for mainframes
- limited in permutation
unicode - Answer - 16 bit code
- 2^16 possibilities
- reason there are so many perms is because of all the symbols
how many codes in unicode and ASCII are the same - Answer the first 256
, kilobyte (KB) - Answer ~1000 bytes (actually 1024)
megabyte (MB) - Answer 1 million bytes (1024^2)
gigabyte (GB) - Answer 1 billion bytes
terabyte (TB) - Answer 1 trillion bytes
what are computers classified by - Answer size (NOT POWER)
microcomputers - Answer - fit on a desktop
- ex. pc, desktop, or laptop
minicomputers - Answer - size of desk
- ex. PDP8 or VAX
mainframes - Answer - ex. IBM
- much bigger than desk
supercomputers - Answer - largest
- fastest
why do we use octal and hex - Answer computers dont represent info in octal/hex, but the human mind
cant comprehend binary codes well so octal and hex are convenient for abbreviating binary code
true or false: base 10 is easy to convert - Answer false; base 10 is much more tedious to convert
true or false: base 10 is not a power of 2 - Answer true
