Given the schema item(itemid, name, category, price) itemsale(transid, itemid, qty) transaction(tran_sid, custid, date) customer(custid, name, street-addr, city), to find the name and price of the most expensive item (if more than one item is the most expensive, print them all) is given below:
The SQL CodeSET p 1 : = ( SELECT MAX ( price ) FROM items);
SELECT * FROM items WHERE price = p 1 ;
Using variables, p1 stores the maximum price from the table items and then uses the variable p1 in the following query to return all records which have that maximum price without limiting the number of records as you desired.
Other ways of getting the same result are given below:
2. SELECT * FROM items
WHERE itemID IN (
SELECT itemID FROM items
WHERE price IN (
SELECT MAX(price) FROM items
)
);
3. SELECT * FROM items
WHERE price IN (
SELECT MAX ( price ) FROM items
) ;
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ry seven years, your company provides a 6-week sabbatical for every employee. vera edwards (vedwards), corey flynn (cflynn), and bhumika kahn (bkahn) are leaving today, while maggie brown (mbrown), brenda cassini (bcassini), and arturo espinoza (aespinoza) are just returning. the company security policy mandates that user accounts for employees gone for longer than two weeks be disabled. in this lab, your task is to complete the following: lock the following user accounts: vedwards cflynn bkahn unlock the following user accounts: mbrown bcassini aespinoza when you're finished, view the /etc/shadow file to verify the changes.
Since the company security policy mandates that user accounts for employees gone for longer than two weeks be disabled, the task function are:
Type:
usermod -l vedwards
usermod -l cflynn
usermod -l bkhan
usermod -u mbrown
usermod -u bcassini
usermod -u aespinoza
What language is used for programming computers?Python as well as JavaScript are more frequently used in web-based startups. Larger businesses typically use PHP to create their web applications and C# or Java to create their internal software applications.
Programming languages like R and MATLAB are frequently used in data analytics programs. Both languages are widely used in programming and computer science due to the fact that C and C++ programmers have access to compilers for a wide range of platforms, the portability of the applications they create is generally high. C and C++ are regarded as high-performance programming languages.
Therefore, A programming language is a notational scheme used to create computer programs. The majority of formal programming languages are text-based, though they can also be graphical.
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Every seven years, your company provides a 6 week sabbatical for every employee. Vera Edwards (vedwards), Corey Flynn (cflynn), and Bhumika Kahn (bkahn) are leaving today, while Maggie Brown (mbrown), Brenda Cassini (bcassini), and Arturo Espinoza (aespinoza) are just returning.
The company security policy mandates that user accounts for employees gone for longer than two weeks be disabled.
Task:
-Lock (disable) the following user accounts:
vedwards
cflynn
bkahn
-Unlock (enable) the following user accounts:
mbrown
bcassini
aespinoza
after taking over from a departed systems administrator, you find the directory and some files in it that cannot be deleted, no matter what the permissions you set on them with the chmod command. which command will you use to discover the problem?
To assist you in solving the issue, this command displays the permissions of each file in the directory. The group permissions on the directory are probably set wrongly.
When examining a script that runs successfully from the user's home directory but not from any other location, a relative path is being used. The file has more links than one. The file and another file have the same inode number. The file and another file have the same data. The ls command lists the working directory's contents by default (i.e. the directory you are in). Using the pwd command, you can always determine which directory you are in.
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When troubleshooting, which of the following should be the very first step?
A.
find the root cause
B.
identify the problem
C.
verify
D.
make and execute a plan
Answer:
B. identify the problem
Answer:
B. Identify the problem
small chunks of data broken down by transmission control protocol (TCP)
A. browser
B. packets
C. IP addresses
D. internet
E. World Wide Web
Answer:
packets
small chunks of data broken down by transmission control protocol (TCP).
you need to create a user account via the useradd utility. after checking this distribution's account creation configuration files, you discover that the home directive points to a different location than desired. which useradd option will allow you to create the home in an alternative location?
The useradd option that will allow you to create the home in an alternative location when creating a user account via the useradd utility is -d
What is the useradd command?
The useradd command is the most basic method through which you can add a user on a Linux OS. In a useradd command, there are so many options to choose from when adding or creating a new user account. They include: -d, -r -u -G jellyfin etc.
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a user presents a smart card to gain access to a building. authentication is handled through integration to a windows server that's acting as a certificate authority on the network. review the security processes and conclude which are valid when using kerberos authentication. (select all that apply.)
When you Review the security processes and to conclude which are valid when using Kerberos authentication, the options that applies are option A and C:
A.) Inputting a correct PIN authorizes the smart card's crypto processor to use its private key to create a Ticket Granting Ticket (TGT) request.
C.) The Authentication Server (AS) trusts the user's certificate as it was issued by a local certification authority.
What is Kerberos authentication and how it works?Kerberos is seen as a form of computer network security protocol that is known to often authenticates service requests that often exist between two or a lot of trusted hosts over a course of an untrusted network, such the internet.
Note that it is one that often authenticates client-server applications and confirms users' identities using secret-key cryptography and a reliable third party.
Hence, a computer network authentication protocol called Kerberos uses tickets as its foundation to enable nodes communicate over an insecure network to securely verify each other's identities.
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A user presents a smart card to gain access to a building. Authentication is handled through integration to a Windows server that's acting as a certificate authority on the network. Review the security processes and conclude which are valid when using Kerberos authentication. (Select all that apply.)
A.) Inputting a correct PIN authorizes the smart card's cryptoprocessor to use its private key to create a Ticket Granting Ticket (TGT) request.
B.) The smart card generates a one-time use Ticket Granting Service (TGS) session key and certificate.
C.) The Authentication Server (AS) trusts the user's certificate as it was issued by a local certification authority.
D.) The Authentication Server (AS) is able to decrypt the request because it has a matching certificate.
lilly is responsible for security on web applications for her company. she is checking to see that all applications have robust input validation. what is the best way to implement validation?
The best way Lily can implement validation is by using both client and server side validation.
What is validation?
In validation, when data is entered in a browser, the web server will check to see that the data is in the correct format and within the constraints set by the application. Validation done in the browser is called client-side validation, while validation done on the server is called server-side validation.
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any time a navigation link is clicked have it do the following: (1 pt) update the content of the tag with the link text (1 pt) update the content of the tag with the link text hint: get the word of the current navigation and pass it to updatecurrentpage()
The program that updates the content of the tag with the link text each time a navigation link is clicked is given below:
Home Page Viewstruct HomePageView: View {
var body: some View {
ZStack{
(Color(#colorLiteral(red: 1, green: 0, blue: 0, alpha: 1)))
.ignoresSafeArea(.all)
VStack {
Text("Hello Chap")
Button {
print("hello chap")
} label: {
Text("Hello Chap")
}
Spacer()
}
}
.navigationBarItems(leading: Text("Title"), trailing: HStack(spacing: 0.00001) {
Spacer()
NavigationLink(destination:WelcomePage()){
Image("icon1")
}
NavigationLink(destination:WelcomePage()){
Image("icon2")
}
NavigationLink(destination:WelcomePage()){
Image("icon3")
}
})
}
}
struct WelcomePage: View {
var body: some View {
NavigationView{
NavigationLink(destination:HomePageView()){
Text("Sign in")
//.font(.custom(buttons_font, size: 17))
.foregroundColor(.white)
.padding()
.background(
RoundedRectangle(cornerRadius: 15)
.fill(Color(red: 0.14, green: 1, blue: 0.73))
.frame(width: 208, height: 27)
.overlay(RoundedRectangle(cornerRadius: 15)
.stroke(Color.white, lineWidth: 1))
)
}
}}}
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problem 11 number of needed usable hosts network address address class default subnet mask custom subnet mask total number of subnets total number of host addresses number of usable addresses number of bits borrowed 8,000 135.70.0.0 what is the 6th subnet range? what is the subnet number for the 7th subnet? what is the subnet broadcast address for the 3rd subnet? what are the assignable addresses for the 5th subnet?
510 host IP addresses are available, which is 512 minus 2. This would surely work for a network of 20 users today and 300 hosts in the future. With that knowledge, we can conclude that the network's most effective subnet mask is 255.255.254.0.
Total number of subnets: The value 248 (11111000) of the subnet mask 255.255.255.248 shows that 5 bits are utilized to identify the subnet. Simply raise 2 to the power of 5 (25) to determine the total number of subnets available. The answer is 32 subnets. The local broadcast address, which is only transmitted within the network, is represented by the number 255.255. By default, this broadcast data cannot pass across routers. It is a restricted broadcast address, in other words.
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an analyst working for a british school system just downloaded a dataset that was created in the united states. the numerical data is correct but it is formatted as u.s. dollars, and the analyst needs it to be in british pounds. what spreadsheet tool can help them select the right format?
Since the an analyst working for a British school system just downloaded a dataset that was created in the united states, the spreadsheet tool that can help them select the right format is format as currency.
What is a spreadsheet about?A spreadsheet is seen as a kind of software that can store, display, and edit data that has been organized into rows and columns. One of the most used tools for personal computers is the spreadsheet. In general, a spreadsheet is made to store numerical data and short text strings.
Note that Microsoft's Excel spreadsheet program is a part of the Office family of business software programs. Users of Microsoft Excel may format, arrange, and compute data in a spreadsheet.
Therefore, A decimal point (.) is used in the format of United States (U.S.) currency to distinguish between dollars and cents. In some nations, the distinction is denoted by a comma (,) rather than a decimal.
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modify the program in listing 2.15.2 so that it prompts the user to enter an entire line, reads the line, then echoes the entire line. read only one byte at a time from the keyboard.
The reply is a categorical no if this is a datagram socket (UDP). You will obliterate crucial data if you read even one byte from a datagram socket. The read sizes should (at the very least) match the send sizes.
If this is a steam socket (TCP), reading a byte at a time has no negative semantic effects. Either way, the outcome will be accurate. This is not to argue that it is a wise decision. Every call to read necessitates entering kernel mode and carrying out numerous tasks. Whether you are recovering one byte or lots, they are both expensive. Therefore, it is strongly advised that you always perform greater reads in terms of performance.
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you use the read csv() function to import the data from the .csv file. assume that the name of the data frame is flavors df and the .csv file is in the working directory. what code chunk lets you create the data frame?
The code chunk that lets you create the data frame is flavors_df <-read_csv("flavors_of_cacao.csv").
Here's the complete question:
you use the read csv() function to import the data from the .csv file. assume that the name of the data frame is flavors df and the .csv file is in the working directory. what code chunk lets you create the data frame?
A flavors_df <- "flavors_of_cacao.csv"(read_csv)
B flavors_df + read_csv("flavors_of_cacao.csv")
C flavors_df <-read_csv("flavors_of_cacao.csv")
D read_csv("flavors_of_cacao.csv") + flavors_df
What is a code chunk?
Code chunk refers to a runable piece of R programming language code that helps to reduce incidents of mismatch pertaining to the commentary in a paper and the results being discussed.
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The distance from the Earth to the Moon is an example of _____.
A. misinformation
B. the unknowable
C. a biased opinion
D. an easily verifiable fact
Answer: D. an easily verifiable fact
Explanation: Because scientists have calculated that and have used those calculations to make the moon landings possible.
Candice is writing an essay about Independence Day in Australia. What fact should she include in her essay?
Since Candice is writing an essay about Independence Day in Australia. the fact that she can include in her essay is:
The history of Australia before their Independence.The fight for Independence. The people who contributed to achieving Australia's Independence. The day that it is celebrated.When did Australia obtain independence?Australia is said to be Founded on January 1, 1901. On January 1, 1901, the British Parliament passed legislation that gave the six Australian colonies the ability to jointly rule themselves as the Commonwealth of Australia.
Australia gradually wrested full autonomy from the UK. The British Parliament approved laws on January 1st, 1901, empowering the six Australian colonies to function as independent states within the Commonwealth of Australia.
Therefore, including the details about can make you write a good essay.
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what is mini computer
how can green computing be implemented in an organization? answer unselected by relocating certain divisions to different areas of the world, depending upon their computing power needs unselected by using virtualization to replace hundreds of individual servers with just a few powerful mainframe computers unselected by replacing energy-draining mainframes with more energy-efficient desktop machines unselected by taking old computers to the landfill and replacing them with just a few mainframes
Green computing can be implemented in an organization by using virtualization to replace hundreds of individual servers with just a few powerful mainframe computers.
Green computing, also known as green technology, can be defined as the use of computers and other computing devices and equipment in energy-efficient and eco-friendly ways. Organizations that use green computing methods often deploy energy-efficient central processing units (CPUs), peripherals, power systems, and servers. Organizations that use green computing methods also focus on reducing resource use and properly disposing of physical and electronic waste (e-waste).
Companies that use green computing strategies can include the following steps:
Remote work.Smart technology. Upgrade and rearrange the data center. Power down. Strategic scheduling. Display selection. Computer selection.Power management. Temperature check. E-waste.Alternative energy.Learn more about green computing here https://brainly.com/question/14491844
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in this assignment you will create, implement and test a sequence4.template file. the material from ch1 ~ 6 of the textbook can help you tremendously. the chapter 6 of the text book is focus on template class. you need to spend more time on understanding template prefix, template parameter, typename and etc. i call these (template prefix, template parameter, .etc.) are template stuff. implementing the template class almost the same as implementing a regular class, but you need to add the template stuff in the file and save the file name with a template extension. if you feel confusion with the template stuff in a file you can implement the class as a regular class and add the template stuff at the end of implementation. you are welcome to use more advance skills than the techniques introduce in the textbook to do the assignment.
As demonstrated below, you can use both keywords: declarations of the functions for the classes T and typename T templates; 3. This may be done in C++ by using template parameters.
Similar to how standard function parameters may be used to send values to a function, template parameters allow you to pass types to a function as well. A template parameter is a specific form of parameter that can be used to pass a type as an argument. It makes no difference whether you write "typename T" or "class T"; programmers who use C++ follow this norm. Personally, I like "typename T" since it more precisely specifies its purpose, i.e., defining a template with a certain type.
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What result would the search expression (insects AND bugs) –spiders give you in the Go.ogle search engine?
A. information about bugs and spiders
B. information about insects, bugs, and spiders
C. information about spiders
D. information about insects and bugs, without including spiders
Explanation:
information about insects, bugs, and spiders
Question 5: Which category best represents: a student has a friend who's
parent is a teacher at their school. The student uses his friend to obtain the
teachers username and password. Grades end up getting changed in the
digital grading system and it is soon discovered that the teacher also has the
same password in their family's online banking system.
A. illegal file sharing
B. software pirating
C. cyber bullying
D. identity theft
E. it's just not right or responsible.
Answer:
E
Explanation:
it's not right and it is also irresponsible and the teacher shouldn't have used that as her bank details and also that student's mother is Bankrupt by now
6.18 lab: word frequencies write a program that reads a list of words. then, the program outputs those words and their frequencies. ex: if the input is: hey hi mark hi mark the output is: hey 1 hi 2 mark 1 hi 2 mark 1
A program that reads a list of words. then, the program outputs those words and their frequencies is given below:
The Programline = input ( )
norm = line . split ( )
low = line . lower ( ) . split ( )
for chr in low :
freq = low . count ( chr )
print ( freq )
for x in norm:
print ( x )
The Output1
2
2
2
2
hey
Hi
Mark
hi
mark
There are other ways to write a program that does this same function and they are given below:
1. for word, word_lower in zip ( norm, low ):
print ( word, low. count (word _ lower ) )
2. wordInput = input ( )
myList = wordInput . split ( " ")
for i in myList :
print ( i , myList . count ( i ) )
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What database term was used to describe a single consolidated worksheet composed of values retrieved from multiple worksheets using excel vloookup that was created with the goal of improving the visibility of key information used in decision making?.
The database term was used to describe a single consolidated worksheet composed of values retrieved from multiple worksheets using excel vlookup that was created with the goal of improving the visibility of key information used in decision making is VLOOKUP.
What is VLOOKUP?Vertical lookup is referred to as VLOOKUP. This is the process of using a spreadsheet's lookup function to search for data vertically across the entire sheet in Excel.
Vertical Lookup is referred to as VLOOKUP. VLOOKUP is a built-in Excel function that, as its name implies, enables you to find a specific number by looking for it vertically across the page. Although VLOOKUP in Excel may seem difficult, you will learn how to use it.
Therefore, When you need to search by row in a table or a range, use VLOOKUP. For instance, you could use the part number to check the cost of an automobile part or the employee ID to seek for a person's name.
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are those data that visitors and customers produce when they visit a website and click on hyperlinks. group of answer choices cookies erp clickstream data rfid
Clickstream data are those data that visitors and customers produce when they visit a website and click on hyperlinks.
What is a clickstream data analysis?A clickstream is a record of information about mouse or touchpad clicks made by website visitors on computer screens. This kind of data offers a visible record of user behavior together with thorough feedback. 24
Note that the tracking and analysis of website visits is known as clickstream analysis and is a type of web analytics (see separate article). Clickstream analysis commonly uses the Web server log files to monitor and measure website activity, while there are different ways to gather this data.
Hence, option C is correct.
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_____ are those data that visitors and customers produce when they visit a website and click on hyperlinks.
1. ERP
2. Cookies
3. Clickstream data
4. RFID
use a loop invariant to prove that the following algorithm converts the positive binary integer, which is stored in the array b, to decimal. for example, the binary integer 10011, which is 19 in decimal, is stored as b[1]
A condition [among program variables] that is unavoidably true just before and just after each iteration of a loop is known as a loop invariant.
Key details that describe why code functions are captured by loop invariants. This means that you should add a comment that specifies the loop invariant whenever you create code in which the invariant is not immediately apparent. This makes the code easier to comprehend for other programmers and helps prevent future modifications from inadvertently breaking the invariant. When seen as an assertion that specifies significant relationships among the variables that must be true at the beginning of each iteration and when the loop closes, a loop invariant can aid in the design of iterative algorithms.
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identify the command that will output the first 15 lines in a log file called hostnames where the system writes in chronological order starting from the top of the file.
A host name, such as www.example.com, is used to identify a host, or website, on the Internet. Sometimes, host names are referred to as domain names.
IP addresses are mapped to host names, but there is no direct correspondence between a host name and an IP address. When a web client sends an HTTP request to a host, a host name is utilized. To begin, go to your Start Menu, select the search box, type cmd, and hit Enter. we should type ipconfig /all and push Enter to launch a window in black and white. Between the command ipconfig and the switch of /all, there is a space. An IPv4 address will be assigned to us.
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8: operating systems move code and data, as necessary, to a portion of the disk that is used as if it were memory, not just disk storage space. this disk location is called .
Operating systems move code and data, as necessary, to a portion of the disk that is used as if it were memory, not just disk storage space. this disk location is called Virtual memory.
What is a virtual memory?
A Virtual memory is referred to as a memory management technique where secondary memory can be used as if it were a part of the main memory. Virtual memory is a common technique used in a computer's operating system (OS).
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a list of employees that has been sorted in descending order needs to be reversed. which xxx completes the algorithm to sort the list in ascending order? ascendinglist(emplist, begin, end) { if (begin >
We can actually deduce here that the xxx that completes the algorithm to sort the list in ascending order is: AscendingList(empList, begin + 1, end - 1).
What is algorithm?An algorithm is actually known to be a sequence of instructions that have been set in order to solve specific problems. Also, algorithm is actually used to perform computations.
In mathematics and computer science, algorithms are employed in calculations and processing of data.
Thus, we see that in the given question above, AscendingList(empList, begin + 1, end - 1) is the xxx that completes the algorithm to sort the list in ascending order.
Attached is the complete question.
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The Boolean operator NOT _____ terms from a search query.
A. eliminates
B. isolates
C. standardizes
D. includes
Answer:
eliminates
Use NOT in a search to: eliminate words from your search.
running on a particular treadmill you burn 4.2 calories per minute. write a program that uses a loop to display the number of calories burned after 10, 15, 20, 25, and 30 minutes
The software serves as an example of loop usage. Loops are phrases that carry out repeated tasks. running on a particular treadmill you burn 4.2 calories per minute.
The software serves as an example of loop usage. Loops are phrases that carry out repeated tasks. The Python program that uses comments to describe each line is as follows:
# This outputs the header print("Time t Calories").
#This loops through I in the range (10, 31, 5) iteratively from 10 to 30 with a 5 increment:
# Printing calories burned every five minutes, this function is print(i,"t", I * 4.2)
Start incorporating ascents if you typically run in a mode without ascents and descents.
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What is the size of the opening in the camera that the light passes through?
A.Shutter
B.Lens
C.Aperture
D.Sensor
Answer: Aperture is the size of the opening in the lens. Some lenses have fixed apertures, but most photographic lenses have variable apertures to control the amount of light entering the lens.
Explanation:
Answer: C. Aperture is the correct answer
in the stage of the application development life cycle, the deliverable is a set of user requirements. a. systems analysis b. programming c. systems design d. prototyping
The correct option is C system design. Developing stakeholder expectations, technical requirements, logical decompositions, and design solutions are the four phases that go into system design.
Systems design is the process of defining a system's components, including modules, architecture, components, their interfaces, and data, depending on the requirements that have been given. A methodical approach to developing and engineering systems is necessary for system design. we must consider every aspect of an infrastructure when creating a strong system design, from the hardware and software to the data and the way it is kept. Allocating a large system's requirements to hardware and software components is the aim of system design. After the system requirements study is finished, the system design activity begins.
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