AP CSP FINAL EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED GRADED A+
What is the best explanation for It's easier, cheaper, and
why digital data is represented in more reliable to build
computers in binary? machines and devices that
only have to distinguish
between binary states.
What is the 4-bit binary 1010
number for the decimal
number Ten (10)?
What is the minimum number 5 bits
of bits you would need to encode
the 26 letters of the alphabet
plus a space - a total of 27
characters?
Number systems with different When data is large enough
bases such as binary (base-2), computers switch to using
octal (base-8), decimal (base- decimal representation
10), and hexadecimal (base-16), instead of binary, because
are all used to view and you can represent larger
represent digital data. numbers with fewer digits.
,Which of the following is NOT true
about representing digital
data?
Consider the following three 01010
binary numbers: 1110
010000
01010
010000
1110
Which of the following lists the
numbers in order from least to
greatest?
A middle school is expanding Add a bit to studentID to double the
to open a high school next year, number of IDs that the database
doubling the total number of can represent.
students. The school keeps a
database in which each student's
unique ID number is stored as an
8 bit number called studentID.
Before the arrival of the new
students almost every 8 bit
number has
already been assigned to a
,student. Of the options provided
below, which is the
smallest change to the way
studentID is represented
necessary to ensure each
incoming student receives a unique
ID?
A user clicks on a website, and it Low bandwidth, low latency
begins to load immediately, but it
takes a long time to load
completely and pictures appear
slowly, one by one. Which of the
following is demonstrated
through this situation?
8 bits is enough to represent 256 9 bits
different numbers. How many
total bits do you need to represent
512 (twice as many) numbers?
ASCII is a character-encoding ASCII Character: B
scheme that uses a numeric
value to represent each
character. For example, the
uppercase letter "G" is
represented by the decimal (base
10) value 71. A partial list of
characters and their
, corresponding ASCII values are
shown in the table below. (See
Code.Org Unit 1 Ch 1 Assessment
Question 9)
ASCII characters can also be
represented by binary
numbers. According to ASCII
character encoding, which of the
following letters is represented
by the 8-bit binary value: 0100
0010
Two students have developed a 2⁴ = 16 times as many values
protocol in which they send 4-bit
messages to each
other. They decide to modify their
protocol to start sending 8-bit
messages instead.
How many more values can be
represented in an 8-bit message
than a 4- bit message?
Which of the following statements A packet traveling between
are true about routers and routing two computers on the
on the Internet. Choose two Internet may be rerouted
answers. many times along the way
or even lost or "dropped".
COMPLETE SOLUTIONS VERIFIED GRADED A+
What is the best explanation for It's easier, cheaper, and
why digital data is represented in more reliable to build
computers in binary? machines and devices that
only have to distinguish
between binary states.
What is the 4-bit binary 1010
number for the decimal
number Ten (10)?
What is the minimum number 5 bits
of bits you would need to encode
the 26 letters of the alphabet
plus a space - a total of 27
characters?
Number systems with different When data is large enough
bases such as binary (base-2), computers switch to using
octal (base-8), decimal (base- decimal representation
10), and hexadecimal (base-16), instead of binary, because
are all used to view and you can represent larger
represent digital data. numbers with fewer digits.
,Which of the following is NOT true
about representing digital
data?
Consider the following three 01010
binary numbers: 1110
010000
01010
010000
1110
Which of the following lists the
numbers in order from least to
greatest?
A middle school is expanding Add a bit to studentID to double the
to open a high school next year, number of IDs that the database
doubling the total number of can represent.
students. The school keeps a
database in which each student's
unique ID number is stored as an
8 bit number called studentID.
Before the arrival of the new
students almost every 8 bit
number has
already been assigned to a
,student. Of the options provided
below, which is the
smallest change to the way
studentID is represented
necessary to ensure each
incoming student receives a unique
ID?
A user clicks on a website, and it Low bandwidth, low latency
begins to load immediately, but it
takes a long time to load
completely and pictures appear
slowly, one by one. Which of the
following is demonstrated
through this situation?
8 bits is enough to represent 256 9 bits
different numbers. How many
total bits do you need to represent
512 (twice as many) numbers?
ASCII is a character-encoding ASCII Character: B
scheme that uses a numeric
value to represent each
character. For example, the
uppercase letter "G" is
represented by the decimal (base
10) value 71. A partial list of
characters and their
, corresponding ASCII values are
shown in the table below. (See
Code.Org Unit 1 Ch 1 Assessment
Question 9)
ASCII characters can also be
represented by binary
numbers. According to ASCII
character encoding, which of the
following letters is represented
by the 8-bit binary value: 0100
0010
Two students have developed a 2⁴ = 16 times as many values
protocol in which they send 4-bit
messages to each
other. They decide to modify their
protocol to start sending 8-bit
messages instead.
How many more values can be
represented in an 8-bit message
than a 4- bit message?
Which of the following statements A packet traveling between
are true about routers and routing two computers on the
on the Internet. Choose two Internet may be rerouted
answers. many times along the way
or even lost or "dropped".
