CMSC 131 (Summer 2019) Week 01 Study Questions

Question 1

What does IDE stand for?

Answer 1

Integrated Development Environment

Question 2

What IDE will we use in class this semester?

Answer 2

Eclipse

Question 3

What does CPU stand for?

Answer 3

Central Processing Unit

Question 4

Define the term “bit”.

Answer 4

A “binary digit” – either 0 or 1.

Question 5

Define the term “byte”.

Answer 5

A sequence of 8 bits.

Question 6

What is “hardware”? Name some examples.

Answer 6

Physical components of the computer. (Things you can “touch”). Examples include: CPU, RAM chips, mother board, disk drives, monitor, mouse, keyboard, cables.

Question 7

What is “software”? Name some examples.

Answer 7

These are the “programs” or “apps” that you can run on a computer. Examples: Internet browsers, games, word processors, spreadsheet programs, the operating system, etc.

Question 8

Name several different operating systems.

Answer 8

Some are: Windows XP, Mac OS X, unix, linux, solaris.

Question 9

Give some examples of secondary memory devices.

Answer 9

Hard drives, floppy disks, flash memory devices, CD’s , DVD’s.

Question 10

What is the advantage of primary memory over secondary?

Answer 10

It is typically much faster.

Question 11

What is the advantage of secondary memory over primary?

Answer 11

It is permanent. (Also usually there is more of it!)

Question 12

What does I/O stand for? Give some examples of I/O devices.

Answer 12

Input/Output. These are devices that allow you to communicate with the computer: monitor, keyboard, mouse, printer, etc.

Question 13

How many different combinations of 0’s and 1’s can be represented using 7 bits?

Answer 13

2^7=128

Question 14

How many bytes are in a kilobyte? Megabyte? Gigabyte?

Answer 14

2^10=1024 2^20 2^30

Question 15

Name four things that the operating system does for you.

Answer 15

Any of:
Process management
Memory management
Primitive I/O
Windowing
Primitive network control
Security management

Question 16

What do you call the language that the CPU uses (0’s and 1’s represent instructions in this language).

Answer 16

Machine Language

Question 17

How does “assembly language” relate to your answer to the previous question?

Answer 17

Assembly language is a mnemonic representation of machine language.

Question 18

Name some higher level languages that were NOT designed for object oriented programming.

Answer 18

Fortran, Cobol, C, etc.

Question 19

Name some higher level languages that WERE designed for object oriented programming.

Answer 19

C++, Java, etc.

Question 20

Translate the number 123 into base 7 representation.

Answer 20

234 (base 7)

Question 21

Translate the binary (base 2) number 1011010 into base 10 representation.

Answer 21

90

Question 22

Translate the hexidecimal (base 16) number 7F into binary representation.

Answer 22

01111111