Ultimate Computer Science 30 Final

Question 1

Used to enter data into the computer

Answer 1

Input Device

Question 2

Accepts data from the CPU and produces an output

Answer 2

Output Device

Question 3

Physical cable that carries bits of data
A flat ribbon cable or a cable into the motherboard

Answer 3

Bus

Question 4

The main working memory of the computer
Software must be loaded into this to run

Answer 4

Random Access Memory (RAM)

Question 5

Used for high-speed storage of frequently used data
Can be part of the CPU or motherboard

Answer 5

Cache Memory

Question 6

communication with memory.
communicates with input and output devices through the buses.
controls the timing and flow of information.
carries out the computations that a program might require.

Answer 6

Central Processing Unit (CPU)

Question 7

Usually includes the power supply

Answer 7

The Case

Question 8

Most CPUs need this

Answer 8

Cooling Fan

Question 9

The working memory of the computer

Answer 9

RAM

Question 10

RAM speed is measured in

Answer 10

Megahertz (MHz)

Question 11

Used for high-end graphics and video games

Answer 11

Video cards

Question 12

A large printed circuit board.
Provides the connections and sockets that let other components communicate with each other.

Answer 12

Motherboard

Question 13

Computer brain.
Microprocessor.
A chip containing millions of tiny transistors.
job is to perform the calculations necessary to make the computer work.
decision-maker.

Answer 13

CPU

Question 14

Can read data stored in it, but cannot write new data

Answer 14

Read-only Memory (ROM)

Question 15

Can read from and write to that memory

Answer 15

Random access memory (RAM)

Question 16

the spine of the computer.
handles interactions between the software running on a computer and the machine hardware components.

Answer 16

Basic input/output system (BIOS)

Question 17

supplies electricity throughout the rest of the computer.
shielded box containing a transformer

Answer 17

Power supply

Question 18

Converts the incoming electricity into the proper voltage for each part of the machine needs electricity

Answer 18

Transformer

Question 19

allows you to store info and apps directly on the computer

Answer 19

Hard drive

Question 20

machines that let computers communicate with other computing systems
closely related to wireless cards

Answer 20

Modem

Question 21

radio transceivers that can send and receive data through a specific frequency of radio waves

Answer 21

Wireless card

Question 22

removable components designed to fit into expansion slot

Answer 22

Video card

Question 23

Slots where you can add components to a PC that don’t have a designated slot somewhere on the motherboard

Answer 23

Expansion Slots

Question 24

Responsible for processor, memory, device, and storage management, and application and user interface

Answer 24

Operation System (OS)

Question 25

specialized processor with greater mathematical computing capabilities, making it perfect for computer graphics and machine learning activities

Answer 25

Graphics processing unit (GPU)

Question 26

any piece of hardware that isn’t mounted inside a PC’s case

Answer 26

Peripherals

Question 27

to properly remove heat from device components to improve device performance and extend its life. incorporates a fan or other mechanism to reduce the temperature of a hardware component, such as a processor.

Answer 27

heat sink

Question 28

How to draw line?

Answer 28

drawLine(x-start, y-start, x-end, y-end)

Question 29

How to draw rectangle or square?

Answer 29

drawRect(x-top left corner, y-top left corner, width, height)

Question 30

How to draw oval or circle?

Answer 30

drawOval(x-top left corner, y-top left corner, width, height)

Question 31

How to draw an arc?

Answer 31

drawArc(x-top left corner, y-top left corner, width, height, starting angle of arc, total angle of arc)

Question 32

How to put in text?

Answer 32

g.drawString(string. x-start, v-position)

Question 33

Which of the following is NOT a valid type of comment in Python? %% This is a comment This is a comment """ This is a comment """

Answer 33

A

Question 34

Which of the following best describes the main purpose of comments? Comments create better spacing in programs. Comments describe your program so other people can read it more easily. Comments warn the people running the program about potential problems with the program.

Answer 34

B.

Question 35

In the following line of code: my_boolean = True and (10 / 0 == 0) Will the 10 / 0 == 0 operation be evaluated? Yes No

Answer 35

A

Question 36

Which of the following evaluates to the variable x rounded to two decimal places? round(x, 2) round(2, x) round(x), 2 round(2), x

Answer 36

A

Question 37

Fill in the blank with the best response: Floating point numbers should be compared to determine if they are _______ equal to each other. exactly approximately

Answer 37

B

Question 38

How many lines will this program print? x = 10 while x > 0: print x x = x - 3 3 4 5 6

Answer 38

B

Question 39

Which of the following best describes the purpose of a for loop? A for loop is for doing something an indeterminate number of times. A for loop is doing something an infinite number of times. A for loop is for doing something a fixed number of times. A for loop is for doing something three times.

Answer 39

C

Question 40

Which Python keyword skips back to the beginning of a loop? break continue

Answer 40

B.

Question 41

Which Python keyword exits a loop? break continue

Answer 41

A

Question 42

What does the following program print? for i in range(2): for j in range(2): print i + j ------ 0 1 1 2 0112 0 1 0 1 0101

Answer 42

A

Question 43

How many lines does the following program print? for i in range(3): for j in range(5): print "hi" 3 5 8 15

Answer 43

D

Question 44

Which of the following code samples correctly passes the number 10 as an argument to the function print_number? print_number(10) print_number() print 10 10(print_number) print print_number print 10

Answer 44

A

Question 45

Which of the following code samples correctly creates a function that takes a single parameter and prints it? def print_number(x): print x def print_number(): print parameter def print_number(): print x def print(x)

Answer 45

A

Question 46

Which of the following functions successfully returns the number 10? def my_function(): 10 def my_function(10): return def my_function(): return 10 def my_function(): print 10

Answer 46

C

Question 47

Which of the following prints the letter A? my_string = "ABCDE" print(my_string[1]) my_string = "ABCDE" print(my_string(0)) my_string = "ABCDE" print(my_string(1)) my_string = "ABCDE" print(my_string[0])

Answer 47

D

Question 48

Which of the following prints CDE? my_string = "ABCDE" print(my_string[3:]) my_string = "ABCDE" print(my_string[2:]) my_string = "ABCDE" print(my_string[3:5]) my_string = "ABCDE" print(my_string[2:4])

Answer 48

B

Question 49

Which word applies to strings in Python? mutable immutable

Answer 49

B

Question 50

What does immutability mean? Strings in Python can be modified and replaced. Strings in Python can be modified, but not replaced. Strings in Python can be replaced, but not modified. Strings in Python can be neither replaced nor modified.

Answer 50

C

Question 51

Which operator allows you to create a string that is the result of putting two different strings together, side by side? + - * /

Answer 51

A

Question 52

Adding two strings together to form one string is also called: slicing concatenating gluing looping

Answer 52

B

Question 53

Which of the following programs DOES NOT PRINT the first five letters of the alphabet, each on its own line? my_string = "abcde" for letter in range(len(my_string)): print(letter) my_string = "abcde" for letter in my_string: print(letter) my_string = "abcde" for i in range(len(my_string)): print(my_string[i])

Answer 53

A

Question 54

What does len("hello") evaluate to? “hello” “h” “—–” 5

Answer 54

D

Question 55

What does the following program print? print "a" in "banana" True False 1 “aaa”

Answer 55

A

Question 56

What does the following program print? x = "ab" y = "banana" print x in y True False 0 “ba”

Answer 56

B

Question 57

Which of the following functions prints 3, and nothing else? s = "hello" x = s.find("l") print x s = "banana" x = s.find("a") print x s = "hello" for i in range(len(s)): print i s = "apple" x = s.find("l") print x

Answer 57

D

Question 58

What does the following program print? first_string = "hello" second_string = first_string.upper() print first_string print second_string ------ hello hello hello HELLO HELLO hello HELLO HELLO

Answer 58

B

Question 59

Which of the following is NOT true about tuples? Tuples are ordered. Tuples are immutable. Tuples can contain elements of different types. Tuples use parentheses to access individual elements, rather than square brackets.

Answer 59

D

Question 60

Which of the following is the correct way to declare a tuple? x = (1, 2, 3) x = [1, 2, 3]

Answer 60

A

Question 61

Which of the following Python programs creates a list with the numbers 1 through 5? my_list = (1, 2, 3, 4, 5) my_list = [1, 2, 3, 4, 5] my_list = 1, 2, 3, 4, 5 my_list = "1, 2, 3, 4, 5"

Answer 61

B

Question 62

Which of the following code snippets will correctly convert a string to a list? my_string = "hello" str_as_list = list(my_string) my_string = "hello" str_as_list = listify(my_string) my_string = "hello" str_as_list = make_list(my_string) my_string = "hello" str_as_list = new_list(my_string)

Answer 62

A

Question 63

my_list = ["bananas", "oranges", "grapes", "pineapples", "apples"] You pick the code that goes here... # ... # ... print my_list Pick the code that results in the following output: ['apples', 'bananas', 'grapes', 'oranges', 'pineapples'] ______________________ my_list.sort() my_list.reverse() my_list.sort() my_list.reverse() my_list.remove("grapes")

Answer 63

B

Question 64

Look at the following program: my_list = ["bananas", "oranges", "grapes", "pineapples", "apples"] You pick the code that goes here... # ... # ... print my_list Pick the code that results in the following output: ['pineapples', 'oranges', 'grapes', 'apples'] ______________________ my_list.remove("bananas") my_list.sort() my_list.remove("bananas") my_list.reverse() my_list.remove("bananas") my_list.sort() my_list.reverse() my_list.remove("bananas")

Answer 64

D