AP CSP Unit 1 Study Guide
Eight bits is sufficient to represent 256 exceptional numbers. How many overall bits do you
need to represent 512 (two times as many) numbers? - ANS-9 bits
A bakery collects records on sales. Each sales file consists of the date of the sale and a few
metadata about the objects that have been a part of the sale. The statistics includes: the
names of the gadgets offered, the varieties of gadgets offered, the number of each item
offered, and the price of every item offered. Which of the subsequent CANNOT be
determined from the bakery's facts set? - ANS-Which consumer most regularly purchases
bread.
A sure social media Web site allows users to submit messages and to touch upon different
messages that have been published. When a user posts a message, the message itself is
taken into consideration information. In addition to the data, the site shops the following meta
statistics.
The time the message turned into published
The name of the user who published the message
The names of any users who comment on the message and the times the comments were
made
For which of the subsequent desires would it not be more beneficial to analyze the statistics
rather than the metadata? - ANS-To decide the topics that many customers are posting
approximately
A compression scheme for lengthy strings of bits known as run-duration encoding is
described as follows:
Rather than record each zero and 1 individually, alternatively document "runs" of bits with the
aid of storing the number of consecutive 1s and 0s that seem.
Since it's binary, any run of 0s should be accompanied by way of a run of 1s (although the
run is best 1-bit long) and vice versa. Thus, you may save a list of small numbers that
represents the alternating runs of 0s and 1s. Here is an instance:
(See Code.Org Unit 2 Chapter 1 Assessment Question 7)
To uncompress the records returned into its unique binary state, you clearly reverse the
manner. This technique is an example of what sort of compression? - ANS-Lossless
compression
A center college is increasing to open a excessive school subsequent yr, doubling the full
quantity of college students. The college maintains a database in which each student's
specific ID number is stored as an 8 bit variety called studentID. Before the appearance of
the brand new students nearly every eight bit quantity has already been assigned to a
scholar. Of the options provided under, that is the smallest change to the manner studentID
, is represented essential to make certain every incoming student gets a unique ID? -
ANS-Add a chunk to studentID to double the quantity of IDs that the database can represent.
A programmer is writing a machine this is meant to be able to keep large quantities of
personal facts. As the programmer develops the data gadget, which of the subsequent is
LEAST possibly to effect the programmer's alternatives in designing the shape of the
machine? - ANS-The frequency of a selected item occurring in a facts set.
A uncooked virtual sound file samples a sound wave at a few c language and measures the
height of the wave at each point. Thus, raw sound is recorded as a listing of numbers.
In very large terms the MP3 audio compression algorithm identifies frequencies and quantity
tiers - low and high - which might be outside the range of human listening to and gets rid of
the information representing these frequencies from the authentic. This approach results in a
smaller audio record that sounds exactly the same to the human ear.
This method is an example of what sort of compression? - ANS-Lossy compression
A faculty starts offevolved tracking which web sites every computer in the faculty is travelling
via monitoring the packets leaving the faculty. A sample of the facts they have got amassed
seems beneath:
IP Address Time URL
... ... ...
1.1.1.1 eleven:05:23.22 example.Com
1.Five.1.8 eleven:05:29.Seventy one information.Com
1.1.5.1 eleven:06:13.48 sports.Com
1.Five.1.Eight eleven:08:09.Ninety five example.Com
... ... ...
1.1.5.1 17:04:29.20 information.Com
Which of the subsequent is MOST probably to be answerable the use of all of the facts
gathered by means of this monitoring? - ANS-Which web sites are maximum often visited
before and after faculty hours from a faculty computer
A user clicks on a internet site, and it begins to load immediately, but it takes a long time to
load absolutely and pix appear slowly, one by one. Which of the subsequent is established
through this case? - ANS-Low bandwidth, low latency
A video-streaming Web site makes use of 32-bit integers to depend the number of times
every video has been played. In anticipation of some videos being played more times than
may be represented with 32 bits, the Web web page is making plans to change to 64-bit
integers for the counter. Which of the following excellent describes the end result of using
sixty four-bit integers as opposed to 32-bit integers? - ANS-2^32 times as many values may
be represented.
According to the area call machine (DNS), which of the subsequent is a subdomain of the
domain example.Com? - ANS-about.Example.Com
An artist makes an RGB raster image in which every pixel shade is encoded with 12-bits ---
four bits each for red, green and blue.
Which of the following effectively indicates the hexadecimal cost for Red as a 12-bit
representation. - ANS-F00
Eight bits is sufficient to represent 256 exceptional numbers. How many overall bits do you
need to represent 512 (two times as many) numbers? - ANS-9 bits
A bakery collects records on sales. Each sales file consists of the date of the sale and a few
metadata about the objects that have been a part of the sale. The statistics includes: the
names of the gadgets offered, the varieties of gadgets offered, the number of each item
offered, and the price of every item offered. Which of the subsequent CANNOT be
determined from the bakery's facts set? - ANS-Which consumer most regularly purchases
bread.
A sure social media Web site allows users to submit messages and to touch upon different
messages that have been published. When a user posts a message, the message itself is
taken into consideration information. In addition to the data, the site shops the following meta
statistics.
The time the message turned into published
The name of the user who published the message
The names of any users who comment on the message and the times the comments were
made
For which of the subsequent desires would it not be more beneficial to analyze the statistics
rather than the metadata? - ANS-To decide the topics that many customers are posting
approximately
A compression scheme for lengthy strings of bits known as run-duration encoding is
described as follows:
Rather than record each zero and 1 individually, alternatively document "runs" of bits with the
aid of storing the number of consecutive 1s and 0s that seem.
Since it's binary, any run of 0s should be accompanied by way of a run of 1s (although the
run is best 1-bit long) and vice versa. Thus, you may save a list of small numbers that
represents the alternating runs of 0s and 1s. Here is an instance:
(See Code.Org Unit 2 Chapter 1 Assessment Question 7)
To uncompress the records returned into its unique binary state, you clearly reverse the
manner. This technique is an example of what sort of compression? - ANS-Lossless
compression
A center college is increasing to open a excessive school subsequent yr, doubling the full
quantity of college students. The college maintains a database in which each student's
specific ID number is stored as an 8 bit variety called studentID. Before the appearance of
the brand new students nearly every eight bit quantity has already been assigned to a
scholar. Of the options provided under, that is the smallest change to the manner studentID
, is represented essential to make certain every incoming student gets a unique ID? -
ANS-Add a chunk to studentID to double the quantity of IDs that the database can represent.
A programmer is writing a machine this is meant to be able to keep large quantities of
personal facts. As the programmer develops the data gadget, which of the subsequent is
LEAST possibly to effect the programmer's alternatives in designing the shape of the
machine? - ANS-The frequency of a selected item occurring in a facts set.
A uncooked virtual sound file samples a sound wave at a few c language and measures the
height of the wave at each point. Thus, raw sound is recorded as a listing of numbers.
In very large terms the MP3 audio compression algorithm identifies frequencies and quantity
tiers - low and high - which might be outside the range of human listening to and gets rid of
the information representing these frequencies from the authentic. This approach results in a
smaller audio record that sounds exactly the same to the human ear.
This method is an example of what sort of compression? - ANS-Lossy compression
A faculty starts offevolved tracking which web sites every computer in the faculty is travelling
via monitoring the packets leaving the faculty. A sample of the facts they have got amassed
seems beneath:
IP Address Time URL
... ... ...
1.1.1.1 eleven:05:23.22 example.Com
1.Five.1.8 eleven:05:29.Seventy one information.Com
1.1.5.1 eleven:06:13.48 sports.Com
1.Five.1.Eight eleven:08:09.Ninety five example.Com
... ... ...
1.1.5.1 17:04:29.20 information.Com
Which of the subsequent is MOST probably to be answerable the use of all of the facts
gathered by means of this monitoring? - ANS-Which web sites are maximum often visited
before and after faculty hours from a faculty computer
A user clicks on a internet site, and it begins to load immediately, but it takes a long time to
load absolutely and pix appear slowly, one by one. Which of the subsequent is established
through this case? - ANS-Low bandwidth, low latency
A video-streaming Web site makes use of 32-bit integers to depend the number of times
every video has been played. In anticipation of some videos being played more times than
may be represented with 32 bits, the Web web page is making plans to change to 64-bit
integers for the counter. Which of the following excellent describes the end result of using
sixty four-bit integers as opposed to 32-bit integers? - ANS-2^32 times as many values may
be represented.
According to the area call machine (DNS), which of the subsequent is a subdomain of the
domain example.Com? - ANS-about.Example.Com
An artist makes an RGB raster image in which every pixel shade is encoded with 12-bits ---
four bits each for red, green and blue.
Which of the following effectively indicates the hexadecimal cost for Red as a 12-bit
representation. - ANS-F00
