I keep getting this error: postfix.cpp: In function ‘double RPN_evaluation(std::string)’: postfix.cpp:42:26: error: cannot convert ‘__gnu_cxx::__alloc_traits > >::value_type {aka std::basic_string }’ to ‘char’ for argument ‘1’ to ‘int isOperand(char)’ if(isOperand(expr.at(g))){ ^ postfix.cpp:96:1: warning: control reaches end of non-void function [-Wreturn-type] } I am not sure what I am doing wrong, help please
Answer:
expr.at(g) returns a string, not a char. They are not the same thing and that is what the compiler is complaining about.
If a schema is not given, you may assume a table structure that makes sense in the context of the question. (using sql queries)
Find all Employee records containing the word "Joe", regardless of whether it was stored as JOE, Joe, or joe.
Answer:
The correct query is;
select * from EMPLOYEE where Employee_Name = 'JOE' or Employee_Name = 'Joe' or Employee_Name = 'joe';
where EMPLOYEE refer to the table name and type attribute name is Employee_Name
Explanation:
Here, the first thing we will do is to assume the name of the table.
Let’s assume the table name is EMPLOYEE, where the column i.e attribute from which we will be extracting our information is Employee_Name
The correct query to get the piece of information we are looking for will be;
select * from EMPLOYEE where Employee_Name = 'JOE' or Employee_Name = 'Joe' or Employee_Name = 'joe';
3. What are the first steps that you should take if you are unable to get onto the Internet? (1 point)
O Check your router connections then restart your router.
O Plug the CPU to a power source and reboot the computer.
O Adjust the display properties and check the resolution
Use the Control Panel to adjust the router settings.
Answer:
Check your router connections then restart your router.
Explanation:
When the internet connection is not displaying properly then the first step is to check the router. The network icon on the internet displays the availability of internet. Adjust the router and see if the router is working properly. If not restart the router so that it adjusts its settings to default. The connection will be available on the computer and internet will start working normally.
Describe and compare imperative (C), functional (SML) and logic (Prolog) programming paradigms.
Answer:
Answered below
Explanation:
Imperative programming paradigm is a paradigm in which the programmer tells the machine how to change its state. It is divided into procedural programming, where programs are grouped as procedures, and object-oriented, where programs are grouped together with the properties they operate on.
Imperative paradigm is efficient, familiar and popular compared to others.
Functional programming paradigm implements all instructions as functions, in a mathematical sense. They take on an argument and return a single solution. The advantage of this, compared to other paradigms, is its abstraction and independence.
Logical programming, like functional programming, incorporates a declarative approach to problem solving. All known facts are first established before queries are made. Advantage of this paradigm is that programming steps are kept to a minimum.
1a) Skills are increasingly the key variable of the entire process of access and information inequality in the information society. Discuss the 21st century competencies or skills required in the information society and four ways (4) you can apply it during Supported Teaching on Schools.
Answer:
Explanation:
Skill acquisition improves quality, competence and competitiveness of an individual, It boost the chances of success and ability to make an impact. Access to information plays a verybhuge role in the society as it enables hearers to get updated while those who aren't informed are left behind. Some of the key competences or skills required in the information society include:
Critical thinking : Problem identification and ways to solve them.
Information sourcing and gathering : knowing where to get vital informations and facts
Effective communication, creativity, leadership, social, media and technological skills and so on.
The skills could be can be applied on schools in the form of :
Creating clubs such as the writing and debate clubs where students are given a research topic to write and present, this improves their research ability and communication skill.
Group project or assignment improves collaboration between members.
Assignments or projects requiring technology : Students may be given problems to solve with the use of computers moutwr programs and technology, this will help mad improve productivity.
Reward for innovation: Students should be paused mad encouraged for being creative, this will improve such individual and push others as well.
Performing binary search on an unsorted list will always return the correct answer in O(n) time where n is the length of the list.
a) true
b) false
Answer:
B. False
Explanation:
Binary search does not work in an unsorted list, therefore it will not return the correct answer in 0(n) time.
For an unsorted list, linear search is the better way of searching for algorithms.
For a binary search, it goes through a sorted list to locate a desired element. It repeats its processes until it picks the correct element it is looking for.
When the code that follows is executed, a message is displayed if the value the user entersvar userEntry = (prompt("Enter cost:");if (isNaN(userEntry) || userEntry > 500 ) { alert ("Message");a. isn’t a number or the value in userEntry is more than 500b. isn’t a number and the value in userEntry is more than 500c. is a number or the value in userEntry is more than 500d. is a number and the value in userEntry is more than 500
Answer:
The answer is "Option b".
Explanation:
In the given-code variable "userEntry" is defined that prompt the user to input value and in the next step, the conditional statement is used, which checks the input value is not a number and greater than 500 with use of OR operator. if the condition is true it uses the alert box to print the message, that's why in this question except "choice b" all were wrong.
UAAR is planning to build in house software similar to Zoom Application. University Authorities contact with you in order to provide best solution with in limited time and limited resources in term of cost.
Describe the roles, Artifacts and activities, keeping in view Scrum process model.
Compare and contract your answer with scrum over XP for development of above mention system. Justify your answer with the help of strong reasons, why you choose scrum model over XP model. How scrum is more productive for project management. Furthermore, highlight the shortcoming of XP model.
Answer:
Following are the answer to this question:
Explanation:
If working to develop Zoom-like house software, its best solution is now in a limited period of time even with effectively reduced assets;
Evaluate all roles in preparation
Create a "Pool Draw"
Choose a singular set of resources.
Utilize Time Recording.
Concentrate on assignments and project objectives.
An object, in which by-product of the development in the software. It's created for the development of even a software program. It could include database schemas, illustrations, configuration screenplays-the list just goes on.
All development activities of Scrum are composed with one or several groups from a lineout, each containing four ruck roles:
Holder of the drug
ScrumMaster and Master
Equipment for development.
Owner of the drug
It is the motivating core of the product marketing idea, that Keeps transparent the vision about what the team member is trying to seek so that to accomplish as well as interacts to all of the other members, the project manager is responsible for the success of the way to solve being formed or retained.
ScrumMaster It operates as a mentor and providing guidance throughout the development phase, it takes a leadership position in the abolishment with impediments that also impact employee productivity and therefore have no ability to control the team, but the roles of both the project team or program manager are not quite the same thing. It works as a leader instead of the management team.
Equipe for development
The Scrum characterizes the design team as a diverse, multi-functional community of individuals who design, construct as well as evaluate the application of those who want.
In this usually 5 to 9 individuals; one's representatives should be able to make quality responsive applications collaboratively.
It is a framework that operates along with teams. It is often seen as agile project management as well as explains a set of conferences, techniques, and roles that also assist individuals to organize as well as complete their employees together. The multidisciplinary team from Scrum means that a person should take a feature from idea to completion.Scrum and XP differences:
Its team members in Scrum usually operate in the various weeks with one month-long incarnation. The XP teams generally work in incarnations which are either one two weeklong. Scrum doesn't write a prescription the certain project management; XP seems to do. Scrum may not make access to other their sprints. XP teams are far more receptive to intervention inside of their repetitions.Which of the following is designed to help an organization continue to operate during and after a disruption?
a. incident response plan
b. business continuity plan
c. disaster recovery plan
d. risk mitigation plan
Answer:
d
Explanation:
cause people need a care for there incedents that not expected thats why people need help prevent from a risk to save people lives
As described in class, what does the sender send to the receiver when using hashing for integrity and authentication? (Do not include information previously shared / agreed upon by the sender and receiver.)
Answer:
The answer is "secret key k".
Explanation:
When the sender sends the message, he/she may combine, it with the hidden key, and determines the hashing, when transmitting the information the digest is being sent, and also the message is transmitted through the connection.
when the receiver receives the message, still having the very same secret key, adding the Hidden Key then recalculating the hashing again. In this, two factors if another subsequent digest matches something, this message is sent.
During transit, the message was certainly not changed. Anybody with the private key – preferably even a preferred sender sent out this letter.You are required to install a printer on a Windows 7 Professional x86 workstation. Which print driver do you need to complete the installation?
Answer:
It depends on the model of the printer you want to install. Recent printers when connected to the computer install themselves searching for the drivers needed on the internet. Anyway, you can always google the word "driver" plus the model of your printer and it will surely appear the driver you need from the the company's website of the printer
The print driver that you will need to complete the installation of a printer on Windows 7 Professional x86 workstation is; 32 bit driver
In windows 7 Professional, an x86 name architecture simply denotes a 32 - bit CPU and operating system while x64 will refer to a 64-bit CPU and operating system.
Thus, since we want to install a printer on a Windows 7 Professional x86 workstation, it means we have to use a print driver that is 32 - bit.
Read more about 32 bits at; https://brainly.com/question/19667078
In the design phase of the systems development life cycle (SDLC), the _____ design is an overview of the system and does not include hardware or software choices. Group of answer choices
Answer:
"Conceptual" is the correct answer.
Explanation:
SDLC would be a particular implementation of a software administration that defines the processes responsible for the creation of such an organization or project, through preliminary feasibility studies to accomplished program activities.The conceptual design seems to be the very first phase of the cycle of brand management, using designs as well as other diagrams or models. It offers an implementation of the study product as a result of a collection of interconnected values and principles about what it will do, function, and look in a user-friendly way.5.15 LAB: Count input length without spaces, periods, or commas Given a line of text as input, output the number of characters excluding spaces, periods, or commas. Ex: If the input is:
Answer:
Following are the code to this question:
userVal = input()#defining a variable userVal for input the value
x= 0#defining variable x that holds a value 0
for j in userVal:#defining for loop to count input value in number
if not(j in " .,"):#defining if block that checks there is no spaces,periods,and commas in the value
x += 1#increment the value of x by 1
print(x)#Print x variable value
Output:
Hello, My name is Alex.
17
Explanation:
In the above-given code, a variable "userVal" is defined that uses the input method for input the value from the user end, in the next line, an integer variable "x" is defined, hold value, that is 0, in this variable, we count all values.
In the next line, for loop is defined that counts string value in number and inside the loop an if block is defined, that uses the not method to remove spaces, periods, and commas from the value and increment the value of x by 1. In the last step, the print method is used, which prints the calculated value of the "x" variable.
Answer:
Explanation:#include <iostream>
#include<string>
using namespace std;
int main()
{
string str;
cout<<"Enter String \n";
getline(cin,str);/* getLine() function get the complete lines, however, if you are getting string without this function, you may lose date after space*/
//cin>>str;
int count = 0;// count the number of characeter
for (int i = 1; i <= str.size(); i++)//go through one by one character
{
if ((str[i]!=32)&&(str[i]!=44)&&(str[i]!=46))//do not count period, comma or space
{
++ count;//count the number of character
}
}
cout << "Number of characters are = "; //display
cout << count;// total number of character in string.
return 0;
}
}
Access controls are enforced automatically in FMS service routines that access and manipulate files and directories.
a True
b. False
Answer:
A. True
Explanation:
In FMS service routines, access controls are enforced automatically
and they that access and manipulate files and directories. Files and directories are usually accessed via access controls in most of the FMSs.
Additional processing overhead are usually imposed by FMS. Also, the FMS tend to restrict and hinder one from accessing secondary storage.
Which of the following statements is correct? Group of answer choices An object of type Employee can call the setProjectName method on itself. The Employee class's setDepartment method overrides the Programmer class's setDepartment method. An object of type Programmer can call the setDepartment method of the Employee class on itself. An object of type Employee can call the setDepartment method of the Programmer class on itself.
Answer:
An object of type Employee can call the setDepartment method of the Programmer class on itself
Explanation:
From what can be inferred above, the programmer class is a subclass of the employee class meaning that the programmer class inherits from the employee class by the code:
Public class Programmer extends Employee
This therefore means(such as in Java) that the programmer class now has access to the methods and attributes of the employee class, the superclass which was inherited from
The web development team is having difficulty connecting by ssh to your local web server, and you notice the proper rule is missing from the firewall. What port number would you open on your webserver?
a. Port 21
b. Port 22
c .Port 25
d. Port 80
e. Port 443
Answer:
Option b (Port 22) seems to the appropriate choice.
Explanation:
Below seem to be some measure you should take to correct this mistake.
Verify whether Droplet's host IP address seems to be right. Verify existing connection supports communication over all the utilized SSH port. Any access points can be able to block port 22 and sometimes customized SSH. For illustration, you could do this by checking different hosts who used the same port, using only a recognized working SSH connection. These could help you identify unless the current problem is not particular to clients' Droplet. Authenticate the Droplet configuration settings. Verify that they're not being configured to DROP 's preferred policy, and do not apply the port to require connectivity.The SSH server also operates on port 22, by default.
Other choices don't apply to the specified scenario. So that the argument presented above will be appropriate.
The port number would you open on your webserver is Port 22
For better understanding let's explain SSH means.
Service Name and Transport Protocol Port Number Registry. where the service name is Secure Shell (SSH) Protocol and it has the port number of 22 therefore this mean that SSH will only work with port 22 using it for other port will only result in difficulty in connection. SSH has other names like Secure Shell or Secure Socket Shell. it is known as a network protocol that helps its users with system administrator.From the above we can therefore say that the answer The port number would you open on your webserver is Port 22, is correct
Learn more about SSH and port from:
https://brainly.com/question/13054022
Consider the following Stack operations:
push(d), push(h), pop(), push(f), push(s), pop(), pop(), push(m).
Assume the stack is initially empty, what is the sequence of popped values, and what is the final state of the stack? (Identify which end is the top of the stack.)
Answer:
Sequence of popped values: h,s,f.
State of stack (from top to bottom): m, d
Explanation:
Assuming that stack is initially empty. Suppose that p contains the popped values. The state of the stack is where the top and bottom are pointing to in the stack. The top of the stack is that end of the stack where the new value is entered and existing values is removed. The sequence works as following:
push(d) -> enters d to the Stack
Stack:
d ->top
push(h) -> enters h to the Stack
Stack:
h ->top
d ->bottom
pop() -> removes h from the Stack:
Stack:
d ->top
p: Suppose p contains popped values so first popped value entered to p is h
p = h
push(f) -> enters f to the Stack
Stack:
f ->top
d ->bottom
push(s) -> enters s to the Stack
Stack:
s ->top
f
d ->bottom
pop() -> removes s from the Stack:
Stack:
f ->top
d -> bottom
p = h, s
pop() -> removes f from the Stack:
Stack:
d ->top
p = h, s, f
push(m) -> enters m to the Stack:
Stack:
m ->top
d ->bottom
So looking at p the sequence of popped values is:
h, s, f
the final state of the stack:
m, d
end that is the top of the stack:
m
which approach does procedural programming follow? bottom up, top down, random, or object oriented
Answer:
Top to down approach
Explanation:
what level of security access should a computer user have to do their job?
Answer:
A computer user should only have as much access as required to do their job.
Explanation:
A computer user should not be able to access resources outside of their job requirement, as this poses a potential attack vector for an insider threat. By limiting the scope of resources to just what is needed for the user's specific job, the threat to the system or company can be mitigated with additional access control features for the computer user. Never allow permission higher than what are needed to accomplish the task.
Cheers.
Which of the following statements are true about the growth of technology? Select 3 options.
- The Number of devices connected to the internet of things is expected to triple between 2018 and 2023
- The general public began connecting to the internet when the World Wide Web was introduced in 1991
- Individuals in the United States currently own an average of three connected devices.
- By 1995, almost half of the world’s population was connected to the Internet
- Currently, 67% of people on earth use at least one mobile device
Answer:
1. Currently, 67% of people on earth use at least one mobile device.
2. The general public began connecting to the Internet when the World Wide Web was introduced in 1991.
3. By 1995, almost half of the world’s population was connected to the Internet.
Explanation:
I just took the test ;)
Answer:
The correct answer :
-The general public began connecting to the Internet when the World Wide Web was introduced in 1991.
-The number of devices connected to the Internet of Things is expected to triple between 2018 and 2023.
-Currently, 67% of people on earth use at least one mobile device.
( not, By 1995, almost half of the world’s population was connected to the Internet. )
Explanation:
edge 2022
A TCP entity opens a connection and uses slow start. Approximately how many round-trip times are required before TCP can send N segments
Answer:
Round trip times required = log2N
Explanation:
The round-trip times required before TCP can send N segments using a slow start is log2N. we can arrive at this by looking at the mode of operation of TCP which is at the 1st time of using a TCP it starts the congestion window as 1 then it sends an initial segment. When the acknowledgement of the initial segment arrives, TCP increases the congestion window to 2 and then sends 2 segments, When the 2 acknowledgements of the segments sent out arrives, they each increase the congestion window by one, thereby increasing the congestion window to 4 . therefore it takes log2N round trips before TCP can send N segments
What are the constraints for designing small and large files and how these are resolved in different file system
Answer:
space management and buffering speed.
Explanation:
There are different types of file management systems in a computer system, examples of which are NTFS, FAT, WAFL, etc, and are governed by protocols like NFS, TFTP, FTP, etc.
These file systems are used in storages like the hard disk drive, CD and DVD, solid-state drive, etc, to organize or manage the files from boot setup, device drivers to permission-seasoned user files.
Files in storage range from small to large files, for which the schema of the file system must adjust to manage and allocate free space to other files in the future. The file system is also able to index the location of a file for retrieval to a cache memory, making buffering faster.
Consider two different implementations of the same instruction set architecture (ISA). The instructions can be divided into four classes according to their CPI (class A, B, C, and D). P1 with a clock rate of 2.5 GHz have CPIs of 1, 2, 3, and 3 for each class, respectively. P2 with a clock rate of 3 GHz and CPIs of 2, 2, 2, and 2 for each class, respectively. Given a program with a dynamic instruction count of 1,000,000 instructions divided into classes as follows: 10% class A, 20% class B, 50% class C, and 20% class D.which implementation is faster?
a. What is the global CPI for each implementation?
b. Find the clock cycles required in both cases.
Answer: Find answers in the attachments
Explanation:
A high school in a low-income area offers special programs to help students acquire the technical skills needed to find jobs as computer technicians
This program is most strongly related to which aspect of life?
Answer:
Economy
Explanation:
Education geared towards readying students to become an employable technician or becoming skilled in a particular craft are known as vocational education. Vocational education, otherwise known as career and technical education is provided by a vocational school
It is suggested that there should be wider range of educational coverage between higher education and vocational educational due to the increasing importance of the use of technology in the workplace
As such technical vocational education is generally taken as an important tool to grow the economy while particularly reducing the unemployment among the youth.
A professor copies one article from a periodical for distribution to the
class. Is that Fair Use? *
Yes or No?
Answer:
no because...
Explanation:
proffesers say you can't copy so why would they copy and also proffesers have degrees they can co.e up with their own questions to help you students to learn more
What is Processor to Memory Mismatch problem?
Maintaining public libraries is a waste of money since computer technology can replace their functions. Do you agree or disagree?
Answer:
I totally do not agree that maintaining public library is a waste of moneyExplanation:
Most library are now advancing in terms of service delivery and public
libraries are no exception as libraries are now incorporating E- platforms/E- libraries, Audio visuals, where anyone can learn or borrow materials electronically.
Furthermore, not everyone can own a computer set to so that public libraries are even relevant to the majorities who can afford a computer set.
Also a library especially the public library is a place where people can meet and socialize to the end we even make friends at the public library more effectively than the online library can make(if they can).
In summary the pros of physical public libraries can not be over emphasized.
Does clicking ads and pop ups like the one shown in this image could expose your computer to malware?
Answer: Yes, clicking adds/popups like the one in the image could cause your computer/electronic to catch viruses/malware.
Explanation: The cause to this is when you click an ad/popup you're exposing yourself to a potential dangerous/visious site. You're unaware to where the popup could bring you, and for all we know it could bring us to a fake site for a download which is really a visious malware to be downloaded to your device.
To ensure AD RMS network transmission is protected from being read and interpreted by protocol analyzers, which of the following must be allowed to enroll for a computer certificate?
a) File Server
b) Domain Controller
c) SQL Server
d) Internet Information Services (IIS)
Answer:
b) Domain Controller
Explanation:
Active Directory Rights Management Services (AD RMS) is a server software that is developed by Microsoft to manage information rights on the Windows server.
The AD RMS servers produce a rights account certificate to link various users with particular PC systems. They also issue end-user licenses.
To ensure that AD RMS network transmission is protected, the domain controller needs to be allowed to enroll for a computer certificate.
A domain controller is a server that authenticates requests from users on a particular computer network. It keeps user data organized and secure.
System stored procedures a. perform standard tasks on the current database b. are stored in the Master database c. can change with each version of SQL Server d. all of the above
Answer:
D. all of the above
Explanation:
A Stored Procedure (sp) is an already compiled group of SQL requests that contains either one or more statements which are stored in the master database.
A Stored Procedure can be created by using the CREATE PROC statement.
They perform standard tasks, stored in the master database and can change with each new version of SQL, so option D is correct.
