What does iteration with computer science loops mean?

repeating a block of code until a condition is met

What will the following code segement

Nothing will be displayed due to the error index out of bounds

What happens in a DDoS attack?

the targeted site is flooded with too many false requests and crashes

Which format is more efficient for storing and represnting most images and why?

GIF storing data in pair allows us to use 3 bytes once for each color set

Which of the following must be true about the code that she writes?

Selection is necessary, but looping is not.

Which of the items below is NOT technology advancement in law enforcem,ent that is being used by officers in the field?

Facial recognition software that instantly run checks on potential suspects

What are two aspects of efficiency?

execution time and memory usage

Why should public key encryption be used?

it cannot be broken with brute force techniques

Why do businesses & scientists analyze big data?

to gain insight that smaller subsets of data might not provide

Which of the following is a relevant aspect of data mining?

allow companies to process large amounts of data to look for patterns

What happens in a DDoS attack?

the targeted site is flooded with too many flase requests and crashes

What will be the value of x after this code segement executes?

for values greater than 5, x will stay unchanged other, x decrease by 1

Which best describes the role of TCP

The foundation of data communication for the World Wide Web

Which of the following are legal & ethical concerns of DMCA

peer to peer networks used for illegal file sharing

Which is an example where analyzing a lot of data would NOT uncover valuable information?

help a business predict what to make & when to maximize profit

What is anti virus software

program that searches hard drives to find/prevent adware and spyware

Which of the following is NOT an example of using citizen science as a possible solution?

Collecting recordings using ultrasonic microphones and sonograms of bats

Which of the following statements is NOT correct:

Hardware is the lowest level of abstraction.

For a binary search to give accurate results, what must be true of the data?

the data must be sorted before the search

When sending a picture from your phone using a mobile application, what is true about the packets of info sent?

Packtes are sent in multiple paths and can be receieved out of order

which of the following is true about packtes?

packets are reassaembled at their final destination

which of the following is a good definition of fault tolerant?

The ability to communicate even when part of the connection is down.

Why should public encryption

it cannot be broken with brute force techniques

How do TCP and IP interact? choose 2

TCP then reassembles the packets at the destination, TCP creates packets from data to be sent & transfers control to IP to route

What does Moores Law indicate?

the power of the processor would double approximately every 2 years

Why is it important to find an efficient solution to a problem?

An efficient solution can make it easier to analyze larger data sets

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Salem, Jana AP Exam Review

95 termsStudBud Administration

Computer Science

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Questions 95

Answers

1
What does iteration with computer science loops mean?
executing code once
identifying error conditions in a porgram
repeating a block of code until a condition is met
duplicating a section of code multiple times in a program
2
What will the following code segement
10
9 10 7 4 1
Nothing will be displayed due to the error index out of bounds
1 4 7 10 9
3
Which of following is cause of the digital divide?
lack of access to technology due to location
all of the above
Lack of knowledge on how to use of technology
Lack of access to the technology due to affordability
4
What happens in a DDoS attack?
firewalls are deactivated so malware can enter the network
the targeted site is flooded with too many false requests and crashes
ensitive data is not encrypted before being transmitted over the internet
5
What is the minimum number of binary digits needed to store the number 56?
5
4
6
1
6
How many lines need to be cut to completely isolate computer E from computer C?
6
3
8
0
7
Which of the following is true of effective collaboration?
I, II, III, and V only
I, III, and IV only
all of the above
II, IV, and V only
8
Which format is more efficient for storing and represnting most images and why?
GIF storing data in pair allows us to use 3 bytes once for each color set
BMP. The algorithm for storing a BMP file has fewer steps
BMP. Having access to the data at every pixel ensures losslessness
9
What would be a good use of constants when initializing variables at the beginning of a program?
I and III only
I and II only
II and III only
I, II, and III
10
In the following web address how many domain levels are there http://anytime.anywayplace.edu/lessons/notes/apex.docx
3
4
6
5
11
Each pixel is a combo of three color values what minimum number of bits needed to store a single pixel 0-255
512
256
24
8
12
Which of the following must be true about the code that she writes?
Both selection and looping are necessary.
Neither selection nor looping are necessary.
Selection is necessary, but looping is not.
13
Which of the items below is NOT technology advancement in law enforcem,ent that is being used by officers in the field?
Facial recognition software that instantly run checks on potential suspects
Networked police cars that have instant acess to information on suspects
Software that allows for predictive policing police resources
The use of drones to record and surveil in areas that are dangerous
14
In the following flowchart, what is the value of RESULT?
Always true
Always false
True when both A and B are true
True when either A or B are true
15
What are two aspects of efficiency?
wall clock and CPU time
emmory usage and length of code
execution time and memory usage
execution time and length of code
16
Which of the following many require more than a single binary digit to represent its value?
a value to represent if a switch is on or off
the MOD value when dividing a whole number by 2
outcome of a boolean calculation
the sum of two binary digits
17
Why should public key encryption be used?
it used a symmetric key, making it harder to decrypt
it uses assymetric key making it easier to decrypt
it cannot be broken with brute force techniques
18
Why do businesses & scientists analyze big data?
all
to help predict problems in the metadata
to confirm patterns from small data sets
to gain insight that smaller subsets of data might not provide
19
Which of the following is a relevant aspect of data mining?
it is risky for decision making if the data interpreted incorrectly
allow companies to process large amounts of data to look for patterns
20
An algoruthm has n number on steps. Which of the following would considered a reasonable number of steps?
n!
3n
none
100n4
21
What happens in a DDoS attack?
phishing
the targeted site is flooded with too many flase requests and crashes
firewalls are deactivated so malware can enter the network
22
What will be the value of x after this code segement executes?
for all values of x, x will decrease by 1
For all values of x, x will remain unchanged
for values greater than 5, x will stay unchanged other, x decrease by 1
for values greater than 5, x will increase by 1, other x will decrease by 1
23
Which best describes the role of TCP
The foundation of data communication for the World Wide Web
A protocol of encryption and decrypting data transfer on the internet
Setting rules for label one ach device
The set of rules for then path packets taken on the fault tolerant internet
24
Which of the following are legal & ethical concerns of DMCA
none
licensing stipulations taht allow incorporating music into other artforms
peer to peer networks used for illegal file sharing
controlled intellectual property sharing
25
Which is an example where analyzing a lot of data would NOT uncover valuable information?
help banks decrease the % of customers who default on loans
helping medical professionals use patterns in health issues
help a business predict what to make & when to maximize profit
26
Which ofthe following precautions will ensure that other residents in teh apartment wont see Noahs wireless network
II and IV
I only
II, III, and IV
I, II, III, and IV
27
They are looking for bike racks large enough to accommodate all 5 bikes. The friends have a list with the following info
I only
neither I nor II
II only
both I and II
28
What should replace so the program below displays TRUE 60% of the time?
x MOD 5 = 5
x MOD 2 = 0
x MOD 5 = 0
x MOD 2 = 1
29
These drawings show two fundamental cryptographic concepts. Which of the choices identify these concepts?
Symmetric and Steganography
Assymetric and Symmetric
Lexicographic and Assymetric
Hash Codes and Key Transfers
30
Which of the following lones of code would cause an error with an robot?
CAN_MOVE (right)
NOT_CAN_MOVE (forward)
NOT CAN_MOVE (left)
CAN_MOVE (north)
31
What is the minimum number of searches for a binary search using an ordered list of 100 numbers
1
0
100
8
32
What is anti virus software
program that searches hard drives to find/prevent adware and spyware
kind of like a vaccinne for a computer
software that never needs to be updates it catches problem on the computer
33
Which of the following is NOT an example of using citizen science as a possible solution?
Collecting recordings using ultrasonic microphones and sonograms of bats
Calculating PSAT scores for a school district
The behavior of fireflies during the summer months
The behavior of the nysterious annd wonderful jellyfish on the bench
34
Which of the following statements is NOT correct:
Hardware is the lowest level of abstraction.
Logic gates are used to perform operations such as addition and subtraction
Logic gates are modeled by Boolean functions.
35
For a binary search to give accurate results, what must be true of the data?
the data must be fewer than a billion records
the data must be sorted before the search
the data must not have duplicate or repeated values
the data must be unsorted
36
What is displayed as a result if the user inputs 'Karel" to the program?
HelloKarel
What is your name? Hello Karel
none
Hello Karel
37
When sending a picture from your phone using a mobile application, what is true about the packets of info sent?
all of the above
Packtes are sent in multiple paths and can be receieved out of order
pakctes are recieved in the order that they are sent
Packets are sent by the quickest path possible in the correct order
38
Convcert 88DEC to a binary number
1010110 BIN
1111000 BIN
10000001 BIN
1011000 BIN
39
What could a single binary value represent?
Time
temperatire in degrees celsius
If a light is on or off
Volume on a radio
40
which of the following is true about packtes?
packets are reassaembled at their final destination
packets travel in order to their destination
all
Packets to follow the shortest path to their destination
41
Which of the following correctly identify methods of DNS cache poisoning? Select 2 answers
DNS BINDing
Masquerading
Rogue Servers
DNS Key Distribution
42
which of the following is a good definition of fault tolerant?
The ability to communicate even when part of the connection is down.
the amount of tolerance that will be allowed between programmer experiences
the acceptance of fault (errors) between calculations
43
Which of the following test cases will NOT find the maximum number in the list?
list[-23, -67, -3, -7]
list[0, 0, 0]
list[4]
list[23, 67, 3]
44
what is digital divide
lack of access to tech
both
lack of knowlegde about tech
45
Sort the following levels of abstraction from lowest to highest
I, II, III, IV
I, III, IV, II
I, IV, II, III
I, IV, III, II
46
What will the program segement display?
3
34
2
99
47
What is displayed after running the algorithm below?
133
12
145
43
48
Why should public encryption
it used a symmetric key, making it harder to decrypt
it uses an assymetric key, making it easier it easier to decrypt
it cannot be broken with brute force techniques
It is shorter than other ciphers
49
How do TCP and IP interact? choose 2
TCP then reassembles the packets at the destination
IP uses the SSL in conjuction with TCP to securely
TCP creates packets from data to be sent & transfers control to IP to route
TCP hands off control to HTTP, which passes it to IP
50
What does Moores Law indicate?
that the price of computers would decrease by half every two years
that the size of computers would decrease by half every
that the cost of computer storage would decrease by half every two years
the power of the processor would double approximately every 2 years
51
Why is it important to find an efficient solution to a problem?
An efficient solution can make it easier to analyze larger data sets
An efficient solution can always be solved in a reasonable amount of time
An efficient solution makes it harder to copy an algorithm
Efficient solutions use lot computer resources ensures that result right
52
Which of the following can be represented by a single binary digit?
Light on / light off
Date
geographic location
Time
53
How do the world wide web and the internet work together?
they perform the same functionality
the internet has the 'deep' net and 'dark' net but the web does not
the web uses HTTP to share computational artifacts using the internet
the internet uses the web to data connect devices to share data
54
choose
ll only
II and lll
l only
I II and III
55
What do logical conditions evaluate to?
a string
a boolean
a real number
a constant
56
Why do businesses & scientists analyze big data?
to gain insight that smaller subsets of data might not provide
to confirm patterns from small data sets
57
Which of the following is the most likely data privacy concern for the original browser?
Cookies are txt files that keep track of such things as web visits
Cookies are responsible for spam and create pop up advertisements
all
Info collected about ur personal preferences & private activities get used
58
Which of the following is true about redundancy on the internet?
I, II, III
I only
II and III only
I and II only
59
If u requests data from Server Alpha, which statement below BEST describes what happen if ISP X, Host 3, & Host 11 stop
ISP Y will receive packets indicating a failure to Host 3 and re-route data
Host 1 will compensate for the outage and route the data accordingly
The Client will not receive any data due to the outage
60
Why does program code have to be run through a compiler?
Program code must be trasnlated into a language the computer understands
Program code must be debugged by the compiler before it can ever run
Program code is write only until it is run through a computer
It doesnt as the new program could be directly from the code
61
Why are the internet protocols used? Select 2 answers
inetrnet protocols are needed to slow the growth of the internet
Internet protocols make internet scalable and encourage growth
Internet protocols are specific to the hardware attached to the internet
set of rules to ensure the net can and transmit info
62
The following program is intended to display the string 789. What type of error will the following procedure causes?
Logic error
Runtime error
Syntax error
No error
63
What role does a compiler have in processing a high-level language?
The compiler ensures that the program has no runtime errors
the compiler checks for updates and installs programs onto the computer
the compiler speeds up the run time of a program
a compiler is needed to translate the code into machine code for computer
64
Ins ome coding languages, the above code will result in an error. Why?
The number of bits used to rep characters/integers limit range of integers
none
The value of the product will always be 0
The multiple levels of abstarction used oversimplified the coded
65
Which of the following test cases will return the correct avergae using the above procedure
numbers [11, 35, 6}
numbers[1, 1, 15]
numbers[0, 1, 35, 6]
numbers[3, 5, 11, 6]
66
Which of the following does NOT need to be considered when determining the credibility of a source
Use ofl persuasive techniques
Use of persuasive techniques within the source
Authos repuation and creditential
Sponsorship of the article or a publisher
67
Which algorithm calculates average correctly?
Algorithm A calculates average in all cases, while algorithm B does not
Both A and B calculate average correctly, but algorithm A more efficient.
Algorithm B calculates average in all cases, while Algorithm A does not
Neither Algorithm A nor Algorithm B calculates average correctly.
68
What should replace missing condition so that program below displays TRUE 60% of the time?
x >= 6
x >= 9
none
x =0
69
Is a list of words from a poem about sunshine in the order they appear in the poem a candidate for binary search
False
True
70
Which of the below, represented in binary as a byte contains the most zeros?
K
C
p
.
71
Which of the following are benefits to having information be easily accessible and changeable?
II and III only
I, II, and III
I only
I and II only
72
Which of the items below is NOT a technology advancement in law enforce that is being used by officers in the field?
Software that allows for protective policing
Facial recognition software that allows officers to instantly run checks
The use of drones to record surveil in areas dangerous or too remote
Networked police cars that have instant access to information on suspects
73
We can convert a number from decimal to octal (base 8) by repeatedly substracting the largest possible powers of?
7
9
8
2
74
When should a herusitic algorithm be used?
When calculating the average score for the national PSAT test
When finding the quickets way to drive from Orlando, Florida, to CF, Alaska
When finding the lifetime battling average of Mookie Wilson
When determining which files could have been exposed to a virus
75
Which of the following potential benefits is MOST likely to be provided by the upgraded system?
Weather webistes customizing site info based on the users location
Offering products and services that are more relevent to the user
Limiting the info abotu sites that the user visits
Increasing the speed in ordering pizza online
76
Which of the following types of components is necessary for cybersecurity?
I only
III only
I, II, and III
I and II only
77
As new members are added to the database will the number of steps the algorithm will take to solve the problem increase?
Yes the numbers of steps in an algorithm changes directly to size of input
Yes because the new members may not be added alphabetically
No because the search is linear, so the dataset is split in half
No the program is written already and will take the same number of steps
78
Is a binary search always the fastest search when searching for a number in a sorted list?
For a large list, binary searches are always faster.
For a large list, linear searches are always faster
A binary search is always faster with a sorted list
No, first pass of linear search has chance of finding right number quicker
79
What will following program display?
OXOOXOXOXO
OOXOXO
OOOXX
The program is an infinite loop
80
What protocol below guides the rules about how data subdivided into packets before transmission?
DNS
TCP
FTP
HTTP
81
What is the minimum number of lines thta must be cut to isolate F completely?
8
0
6
4
82
If a does not equal b, what error has occurred?
a will equal b on all computers
Hexadecimal conversion error
Roundoff error
Overflow error
83
Which of the following is the best meaning for heuristic in computer science?
A heursitic is a sequential set of specific steps used to solve a problem
a heursitic is a shortcut that sacrifices accuracy and completeness
act of using a computer to find specific solutions to a problem that cannot
84
What will be the result of the displayed program?
9 5 7
7 5 9
14 6
6 14
85
What binary number is equal to 10001_BIN+3_DEC
11110BIN
110101BIN
10100BIN
10111BIN
86
Which of the following statements are true about high level programming languages, select 2 answers.
a high level programming language allows for code to be rerused
a high level programming language often uses natural language elements
a high level programming language must be used to execute commands
87
Which of the following best approximates the minimum possible time to run all htree processes in a series?
8
38
0
20
88
What should replace <missing condition> so that the program below display TRUE 10% of the time?
x <=1
x <= 9
x < 1
x < 4
89
Phishing is harmful
false
true
90
What will the following code segment display?
3
6
Nothing will be displayed due to an error
11
91
Which of the following is a true statement about data transmitted over the internet?
(DNS) has been challenged by the Digital Millenium Copyright Act (DMCA)
Packets are received in the same order that they are sent
Redundancy in the internet is overseen by large
All data travelling over the internet is in binary
92
What will the below above display?
4 8
2 8
3 7
2 7
93
Which of the following protocol standardization is NOT a function of the IETF
Simple Mail Transfer Protocol
JavaScript Coding Protocol
Hyoertext Transfer Protocol
Interent Protocol
94
Which has the largest impact on bandwith
type of internet
frequency
speed
amount of data
95
What is major disadvantage of the internets model of trust?
A trusted web has power over thge computer ROM, damaging if web is bad
A trusted web can still download malicious code even if blocked by firewall
A trusted web cant have encrypted communications so data sent can be read
all

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