To count all distinct first names, you will need to use the SQL SELECT statement in conjunction with the COUNT function and the DISTINCT keyword. The SQL command for this would be: SELECT COUNT(DISTINCT first_name) FROM table_name;
In this command, "table_name" should be replaced with the name of the table that contains the first names you want to count. The COUNT function will count the number of distinct first names in the table, and the DISTINCT keyword will ensure that each name is only counted once.
The resulting output of this SQL command will be a single number representing the count of distinct first names in the table. It's important to note that this command will only count first names that are in the table, and will not include any that are not present. Overall, this SQL command is a quick and easy way to count the number of distinct first names in a table and can be used in a variety of applications, from data analysis to marketing research.
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which of the following is acomputer program that detects, prevents. and takes action sto deactivate or remove malicious programms
An Antivirus program fits the description of a computer program that detects, prevents and takes action to deactivate or remove malicious programs.
What is an antivirus program?An antivirus program is any software installed on a computer system with the sole aim of detecting, preventing and removing threats from harmful software applications. We can liken antivirus software to a security guard stationed in front of a building; the building in this case is the computer system.
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The sticky notes often have strings of characters written on them that appear to be passwords. What can you do to prevent the security risk that this practice presents
During the functional testing phase of application development, an application tests for vulnerabilities against the running code. What type of code testing is this?
Dynamic analysis is the type of code testing that the above case is.
What is Dynamic analysis?Dynamic analysis is known to be a form of testing and examination of a program by using or executing data in a kind of real-time.
Note that the objective is to be able to see errors in a program while it is said to be running and as such, Dynamic analysis is the type of code testing that the above case is.
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; This program replaces the value in R0 with its absolute value. ; ; It does NOT modify any other registers! ; .ORIG x0200 START XXXXXXXX ; copy R0 to itself to set the condition codes based on R0 XXXXXXXX ; if R0 is NON-NEGATIVE, skip the negation (already correct) XXXXXXXX ; R0 is negative, so negate it XXXXXXXX DONE BR START .END
Using the knowledge in computational language in LC-3 Assembly it is possible to write a code that replaces the value in R0 with its absolute value
Writting the code.ORIG x0200
START
AND R0, R0, #0 ; copy R0 to itself to set the condition codes based on R0;
; i.e performing addition operation with Zero option to set the flags
BRzp DONE ; if R0 is NON-NEGATIVE, skip the negation (already correct);
; Branch to DONE if number is poistive
NOT R0, R0 ; R0 is negative, so negate it i.e taking 2's complement
ADD R0, R0, #1 ; R0 = -R0 is performed successfully
DONE BR START
.END
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______ control is not displayed at the runtime but its event is fired automatically at the specific time interval .
Timer Interval Property is a control is not displayed at the runtime but its event is fired automatically at the specific time interval .
What is a timer tool?TimerTools is known to be one that is said to be aimed to aid a person to be able to manage their Countdowns and stopwatches.
What is a timer interval?The INTERVAL-TIMER function is known to be that which returns the number of seconds and it begins from an arbitrary point in regards to time.
Note that in regards to the above, Timer Interval Property is a control is not displayed at the runtime but its event is fired automatically at the specific time interval .
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Which type of printer maintenance commonly requires resetting a maintenance counter?
The type of printer maintenance that commonly requires resetting a maintenance counter is Fuser Reset or ITM Reset.
What is a Printer?This refers to the device that is used to produce an output in a hardware format.
At some point during use, the printer can develop some fault and to run a maintenance, there would have to be a reset of the maintenance counter.
This can be done with the use of the Fuser Reset or ITM Reset.
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Write an expression whose value is true if all the letters in the str associated with s are all lower case
An expression whose value is true if all the letters in the str associated with s are all lower case is s.islower()
What does expression implies in computer terms?The term "expression" is a term that connote a computer program statement that examines to some specific value.
Note that A Boolean expression can examine to either true or false, e.g. ( money > 100 ).
Hence, An expression whose value is true if all the letters in the str associated with s are all lower case is s.islower()
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The Crow’s foot symbol with two vertical parallel lines indicates _____ cardinality.a. (0,N)b. (1,N)c. (1,1)d. (0,1)
The Crow’s foot symbol with two vertical parallel lines indicates option c. (1,1) cardinality.
What is Symbols in crow's foot notation?Crow's foot diagrams is one that stands for entities as boxes, and its association as lines that exist between the boxes.
Note that different shapes at the ends of these lines stands for the relative cardinality of the relationship and thus The Crow’s foot symbol with two vertical parallel lines indicates option c. (1,1) cardinality.
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When patel’s advertising co. decided to upgrade its computer network, many people were involved in the decision. In b2b buying systems, decisions are often made:_____.
In b2b buying systems, decisions are often made by by a committee after a lot of considerable deliberation.
What is Business-to-Business service?Business-to-business is known to be a kind of a scenario where one business is said to often makes a commercial transaction with another kind of business.
The B2B decision-making process is known to be made up of some discrete tasks such as:
Knowing that there is an issue or need.Examining and comparing the available alternative or solutionsDefining the requirements that is needed for the product and others.Hence, In b2b buying systems, decisions are often made by by a committee after a lot of considerable deliberation.
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One common command-line network utility tool is “netstat,” which displays which protocol is being used. It can review particular ports or display all active connections and ports on which a computer is listening and, depending on the OS, can also include the total number of bytes of traffic, domain names, and IP addresses (local and foreign). Name at least two potential uses of this command, making sure at least one use is related to secure administration principles.
An example of two potential uses of this command is in the area or aspect of:
The troubleshoot of networking problems.In configurationWhat protocol does the netstat command use?It is known to use the Internet Protocol (TCP/IP) and it is one that is used without parameters, this command is said to often show active TCP connections.
What is netstat used for?The network statistics ( netstat ) command is known to be a kind of a networking tool that is often used for troubleshooting and configuration, and this is one that can be used as a tool for monitoring for connections over the network.
Hence, it is used in incoming and outgoing connections, routing tables, port listening, and others. Therefore, An example of two potential uses of this command is in the area or aspect of:
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During the maintenance phase of the sdlc, the team must _____ if a system's objectives are not being met
During the maintenance phase of the sdlc, the team must take the correct action if a system's objectives are not being met
What are the 5 phases of the traditional SDLC Software Development process)?Software process is the set of activities that constitute the development of a computer system. These activities are grouped into phases, such as: requirements definition, analysis, design, development, testing and deployment.
The main focus of this phase of the SDLC is to ensure that the needs continue to be met and that the system continues to function as per the specification mentioned in the first phase.
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>>> A = [21, 'dog', 'red'] >>> B = [35, 'cat', 'blue'] >>> C = [12, 'fish', green'] >>> E = [A, B, C] What is the value of E1 2
The value of E[1][2] is 'blue'
How to determine the value of E?The code segment is given as:
A = [21, 'dog', 'red']
B = [35, 'cat', 'blue']
C = [12, 'fish', 'green']
E = [A, B, C]
The above code segment is written in Python, and the lists A, B and C are merged to form list E
This means that list E would be a two-dimensional list.
So, the value of E is [[21, 'dog', 'red'], [35, 'cat', 'blue'], [12, 'fish', 'green']]
Rewrite as:
E = [[21, 'dog', 'red'],
[35, 'cat', 'blue'],
[12, 'fish', 'green']]
The element at E[1][2] is the element at the second row and the third column.
This element is 'blue'
Hence, the value of E[1][2] is 'blue'
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________ sites let users evaluate hotels, movies, games, books, and other products and services.
Social review websites avail end users an opportunity to evaluate hotels, movies, games, books, and other products and services.
What is a website?A website can be defined as a collective name which connotes a series of webpages that are interconnected or linked together with the same domain name, so as to provide certain information to end users.
What is social review?Social review can be defined as a process through which end users are availed an opportunity to evaluate various products and services that are provided by an e-commerce business firm, especially through the use of websites and over the Internet (active network connection).
In conclusion, we can infer and logically deduce that social review websites avail end users an opportunity to evaluate products and services such as hotels, movies, games, books.
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A year in the modern Gregorian Calendar consists of 365 days. In reality, the earth takes longer to rotate around the sun. To account for the difference in time, every 4 years, a leap year takes place. A leap year is when a year has 366 days: An extra day, February 29th. The requirements for a given year to be a leap year are: 1) The year must be divisible by 4 2) If the year is a century year (1700, 1800, etc.), the year must be evenly divisible by 400 Some example leap years are 1600, 1712, and 2016. Write a program that takes in a year and determines whether that year is a leap year. Ex: If the input is:
1712 the output is: 1712 is a leap year. Ex: If the input is: 1913 the output is: 1913 is not a leap year
Your program must define and call the following function. The function should return true if the input year is a leap year and false otherwise. def is_leap_year(user_year) Note: This is a lab from a previous chapter that now requires the use of a function,
Based on the fact that the program should be able to return true if the input is a leap year, and false if the input is not, the program is shown below.
What program will return true if it is a leap year?In order to make a program that tells whether a year is a leap year or not, you need to start off with the definition:
def is_leap_year(user year):
Then continuing the program, the full code would be:
def is_leap_year(user_year):
if(user_year % 400 == 0):
return True
elif user_year % 100 == 0:
return False
elif user_year%4 == 0:
return True
else:
return False
if __name__ == '__main__':
user_year = int(input())
if is_leap_year(user_year):
print(user_year, "is a leap year.")
else:
print(user_year, "is not a leap year.")
If you input the year, 1712, the program would return the result, "1712 is a leap year."
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A(n) ___________ g is a set of elements with a binary operation, denoted by *, that associates to each ordered pair (a,b) of elements in g an element ( a*b) in g.
A(n) elliptic curve is a set of elements with a binary operation, denoted by *, that associates to each ordered pair (a,b) of elements in g an element ( a*b) in g.
Why is it called an elliptic curve?In mathematics, an elliptic curve is known to be a kind of a smooth, curve that is said to be projective and also an algebraic curve which there is found to be a specified point O.
Note that the elliptic curves are seen to be the set of points that are said to be gotten or obtained as an outcome of solving elliptic functions that is known to be over a predefined space.
Therefore, A(n) elliptic curve is a set of elements with a binary operation, denoted by *, that associates to each ordered pair (a,b) of elements in g an element ( a*b) in g.
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What screen adjustments are made to the digital dashboard when enhanced mode is selected on 2023 z?.
The screen adjustments that are made to the digital dashboard when enhanced mode is selected on 2023 is the 12.3-inch TFT meter display.
What is it about?The 12.3-inch TFT meter display is known to be a form of all-new that is made along with three display modes to be able to match driver preference.
Note that “Normal” mode is one that gives a sporty feel with the center area made for navigation, audio and also a form of vehicle information.
Therefore, The screen adjustments that are made to the digital dashboard when enhanced mode is selected on 2023 is the 12.3-inch TFT meter display.
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The (blank) option will help determine the overall look of her presentation.
The slide layout option will help determine the overall look of her presentation.
Which option in a presentation program is vital?Slide layouts is known to be a function that is made of all the tools in regards to formatting, positioning, and others used in a slide and it is one that have all of the content that is seen on a slide.
Hence, The slide layout option will help determine the overall look of her presentation.
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Answer: themes
Explanation:
Continue your S3 and S4 assignment for a young soccer league with the following specification. Do not include the previous queries from Task 5. A team will play some of the other teams in the same division once per season. For a scheduled game we will keep a unique 8 character code, the date, time and location (max 60 characters
Using the computational language in SQL script it is possible to write a code scheduled game we will keep a unique 8 character code, the date, time and location.
Writting the code in SQL script:SELECT Trainer.firstName+' '+ Trainer.lastName as trainer ,
Customer.firstName+' '+ Customer.lastName as customer
FROM Customer, Trainer
WHERE Trainer.handlingCustomer = Customer.id;
SELECT Trainer.firstName+' '+ Trainer.lastName as trainer ,
Customer.firstName+' '+ Customer.lastName as customer
FROM Customer, Trainer
WHERE Trainer.handlingCustomer = Customer.id AND
Customer.firstName = 'Robert';
SELECT Trainer.firstName+' '+ Trainer.lastName as trainer ,
Customer.firstName+' '+ Customer.lastName as customer
FROM Customer, Trainer
WHERE Trainer.handlingCustomer = Customer.id AND
Trainer.firstName = 'Mary';
SELECT Trainer.firstName+' '+ Trainer.lastName as trainer ,
Customer.firstName+' '+ Customer.lastName as customer
FROM Customer, Trainer
WHERE Trainer.handlingCustomer = Customer.id AND
Trainer.hiredIn >= 2015;
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Q 1: How computer produces result?
Q 2: Write function of power supply in system unit?
The computer produces result as an Output, by the central processing unit.
What are the function of power supply in system unit?The key functions of a power supply unit are:
It helps to change AC to DC.It transmit DC voltage to the motherboard, adapters, and othersIt gives cooling and lead to more air flow via its case.What is the result of the computer?The result shown by a computer is known as an output, the result is known to be made by the central processing unit, that is said to be a computer's whole aim for existing.
Hence, The computer produces result as an Output, by the central processing unit.
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Computer networks that use packet switching are less efficient than telephone networks that use circuit switching.
Computer networks that use packet switching are less efficient than telephone networks that use circuit switching is a false statement.
Is packet switching more better than circuit switching?Packet switching is known to be easy to use and they are known to be very much affordable when compared to circuit switching.
Note that in packet switching, it is more efficient in regards to bandwidth because it do not need to deal with a little number of connections that cannot be using all that bandwidth.
Hence, Computer networks that use packet switching are less efficient than telephone networks that use circuit switching is a false statement.
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why are pirated software considered a threat?
Pirated software are considered a threat because if they are able to infect your PC with a kind of adware, bots and even a ransomware, they can damage your PC.
What are the disadvantages of using pirated software?The Disadvantages of Pirated software is known to be the likelihood to be infected with a kind of serious computer viruses, that tends to damage the a person's computer system.
Hence, Pirated software are considered a threat because if they are able to infect your PC with a kind of adware, bots and even a ransomware, they can damage your PC.
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A client discovers the address of a domain controller by making a dns query for which record?
In order for a client to discover the address of a domain controller, they can make a DNS query for the SRV record.
What is the SRV record?This refers to a record of the location of data files in a certain service being offered in a system. It is considered a Domain Name System (DNS) record which means it can be access via a DNS query.
If a client wants to discover the location of a domain controller, they can use this Domain Name System to make a query that will help them to locate the address of the domain controller from the records in the Active Directory.
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Accessibility is the degree to which a product or service is readily available and usable by _____.
A - as many people as possible
B - anyone who is disabled
C - anyone who is disabled
D - employees
Answer:
A-As many people as possible
Which of the following describes the IP address of a router to which packets destined for a remote network should be sent by default
The term that describes the IP address of a router to which packets destined for a remote network should be sent by default is the a gateway of last resort.
What is 'Gateway Of Last Resort'?A Gateway of Last Resort is known to be the Default gateway and this is said to be a route that is known to be often used by the router if no other known route is seen to transmit the IP packet.
Note that Known routes are seen in the routing table. but, any route not known by the routing table is said or known to be forwarded to the default route.
Hence the primary function of a router is so that it can forward packets toward a given destination.
Therefore, The term that describes the IP address of a router to which packets destined for a remote network should be sent by default is the a gateway of last resort.
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Resource _____ let you view, manage, and automate tasks on multiple aws resources at a time.
Resource group let you view, manage, and automate tasks on multiple aws resources at a time.
What are the resource groups?Resource groups is known to be a kind of a group that is said to be the key unit in System Automation that is meant for Multiplatforms.
Note that it is said to be logical containers that are meant for the collection of resources hence, Resource group let you view, manage, and automate tasks on multiple aws resources at a time.
See full question below
Resource _____ let you view, manage, and automate tasks on multiple AWS resources at a time.
A-stores.
B-groups.
C-users.
D-graphs.
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Task 5: Create the GET_CREDIT_LIMIT procedure to obtain the full name and credit limit of the customer whose ID currently is stored in I_CUST_ID. Place these values in the variables I_CUSTOMER_NAME and I_CREDIT_LIMIT, respectively. When the procedure is called it should output the contents of I_CUSTOMER_NAME and I_CREDIT_LIMIT.
The SQL statement that would create the GET_CREDIT_LIMIT procedure to obtain the full name and credit limit of the customer is:
GET_CREDIT_LIMIT
SELECT CUST_ID 125
FROM FIRST_NAME, LAST_NAME, CREDIT_LIMIT
WHERE LAST_NAME ="Smith"
What is SQL?This is an acronym that means Structured Query Language that is used in handling data in a database.
Hence, we can see that from the attached image, there is a table that contains the details of customers and their various data such as their first and last names, credit limits, address, etc, and the GET_CREDIT_LIMIT procedure is shown above.
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Which text most closely resembles the form in which one instruction is stored in a single location of a typical computer's memory?
A text which most closely resembles the form in which an instruction is stored in a single location of a typical computer's memory is: c. Add 34, #9, 25.
What is a computer?A computer can be defined as an electronic device that is designed and developed to receive data in its raw form as an input and it processes these data into an output (information), which can be used to perform a specific task through the use of the following computer parts:
KeyboardNetworkMonitor screenMouseWhat is a memory?A memory can be defined as a terminology that is used to describe the available space on an electronic device that is typically used for the storage of data or any computer related information such as:
ImagesVideosTextsMusicCodesFoldersIn computer science, we can infer and logically deduce that "add 34, #9, 25." is a text which most closely resembles the form in which an instruction is stored in a single location of a typical computer's memory.
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Complete Question:
Which text most closely resembles the form in which one instruction is stored in a single location of a typical computer's memory?
a. w = (x + y) * (y - z)
b. w = x + 000111 - (y * 1110101)
c. Add 34, #9, 25
d. (Mul 45, 2) + (Mul 33, 5) + (Mul 4, 8)
What is not one of the main stages of the hardware lifecycle?
Recycling is not one of the main stages of the hardware lifecycle.
What is hardware life cycle main stages?They are:
Procurement DeploymentMaintenanceRetirement.Hence, Recycling is not one of the main stages of the hardware lifecycle.
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An Amazon Fulfillment Associate has a set of items that need to be packed into two boxes. Given an integer array of the item weights (
The task here is to complete a function that gives the required result indicated in the question. [See the full question below]
What is the completed function of for the above program?The completed function is given as;
def minimulHeaviestSetA(arr,n):
arr.sort(reverse=True)
x=0
for i in range(1,n):
if sum(arr[:i])>sum(arr[i:]):
x=i
break
return arr[:x][::-1]
n=int(input()) arr=list(map(int,input().split())) A=minimulHeaviestSetA(arr,n)
print(A)
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Full question:
An Amazon Fulfillment Associate has a set of items that need to be packed into two boxes. Given an integer array of the item weights larr) to be packed, divide the item weights into two subsets, A and B. for packing into the associated boxes, while respecting the following conditions: The intersection of A and B is null The union A and B is equal to the original array.
The number of elements in subset A is minimal. The sum of A's weights is greater than the sum of B's weights. Return the subset A in increasing order where the sum of A's weights is greater than the sum of B's weights. If more than one subset A exists, return the one with the maximal total weight.
Example n=5 arr = 13,7,5,6, 2) The 2 subsets in arr that satisfy the conditions for Aare (5, 7) and (6, 7]:
A is minimal (size 2) • Surn(A) = (5 + 7) = 12 > Sum(B) = (2+ 3+6) = 11 • Sum(A) + (6 + 7) = 13 > Sum(B) = (2 + 3 + 5) - 10 •
The intersection of A and B is null and their union is equal to arr. . The subset A where the sum of its weight is maximal is [6.7).
Function Description Complete the minimal Heaviest Seta function.
A user has reported that their workstation is running slowly. You perform a reboot of their workstation and receive a S.M.A.R.T. error during the boot-up process. Which of the following actions should you perform FIRST
The actions that one need todo or perform FIRST is to backup the hard drive.
What causes a SMART error?A composition of bad blocks can be a tool that can lead to a SMART error, or when the drive of the system's temperature is known to have gotten too high as a result of poor ventilation or other environmental factors.
Note that The actions that one need todo or perform FIRST is to backup the hard drive. because by doing so, one can be able to retrieve information back.
Hence the answer is correct.
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