Answer:
Final variable x is not initialized.
Explanation:
In this JAVA code we have a final variable named x.The thing with final variable is that they act like constants in C++.Once initialized cannot be changed after that and we have to initialize them at the time of declaration.
In JAVA if we do not initialize the final variable the compiler will throw compile time error.Final variables are only initialized once.
. What is meant by the term three tier architecture.?
Answer:
The three tier architecture is based on the client and server architecture. It is basically maintain the independent module on the individual platform.
In the three tier architecture, it include various functional process, data computer storage and the user interface are basically developed in this architecture.
The three tier architecture are:
Presentation layerApplication layerData layer
Broker Ray is closely acquainted with the Subdivision Heights neighborhood of his town. Over the year, Ray has made it a practice to contact homeowners in person and also to send them quarterly mailings. This method of finding listings is known as:
Which of the following is NOT a MySQL table storage engine?
(a) Blackhole
(b) SuperNova
(c) MyISAM
(d) MRG_MyISAM
(e) InnoDB
Answer:
(b)Supernova.
Explanation:
MYSQL storage engines are software modules that are used by the database management systems to read,update,create from a database.
There are basically two types of storage engines Transactional and Non-Transactional.
Among the names engines provided all of them are MYSQL storage engines except supenova.
The technology which is not a MySQL table storage engine is: B. SuperNova
What is MySQL?MySQL can be defined as open-source relational database management system (RDBMS) that was designed and developed by Oracle Corporation in 1995. Also, MySQL was developed based on structured query language (SQL).
In Computer technology, there are various storage engine that are designed and developed for use in MySQL table and these include the following:
BlackholeMyISAMMRG_MyISAMInnoDBHowever, SuperNova is not a MySQL table storage engine.
Read more on MySQL here: https://brainly.com/question/24443096
Explain the ‘PDCA’ for quality assurance.
Answer: PDCA is the known as plan-do-check-act is the cyclic technique in which the methods of planning , doing ,checking and acting upon it is carried out in the business management field.This approach is used for achieving solution to any particular problem.
It measures the improvement, updating methods of working and process of the business management. PDCA also eliminates the mistakes and error that reoccur.These factors evaluates about the quality of the business management process and hence quality is assured.
When using _____, developers are required to comply with the rules defined in a framework. (Points : 2) inheritance
base classes
object-oriented constructs
contracts
None of the above
Answer: Contracts
Explanation:
The contract is the mechanism which is basically used by the developers to follow the set of rules that is defined in the framework with the proper specification in the API ( Application programming interface).
The contract is the proper agreement between the two and more developers so that they must follow the rules that is mentioned in the agreement contract.
The contract is widely used in the software development process in which all the possible design requirement are mentioned according to the needs of the client.
Therefore, Contract is the correct option.
If the code in a method can potentially throw a checked exception, then that method must:
a.)handle the exception
b.)have a throws clause listed in the method header
c.)neither handle the exception nor have a throws clause listed in the method header
d.)either handle the exception or have a throws clause listed in the method header
Answer:
d.)either handle the exception or have a throws clause listed in the method header
Explanation:
A checked exception that can be thrown in a method , necessarily needs to be handled in the method in one of the two ways:
Handle the exception in codeHave a throws clause in method headerFor example, let us see both:
a)
public void mymethod(){
// Exception handling using try/catch block
try{
}
catch ( IOException e){
}
}
b)
public void mymethod() throws IOException{
// Exception in the throws clause
}
Name three "Hints" for computer systems design.
Answer:
The three hints for the computer system design is that:
Implementation is the important key feature while designing the computer system design. It also implement new application of the software and also help in the structure analysis and data modeling in the organization. Planning is efficient way for computer system design as it help the organization to understand the proper software architecture and modules. Performance should be good, efficient and useful for the computer system design and it increase the capability of fault tolerance in the computer system.The jackpot of a lottery is paid in 20 annual installments. There is also a cash option, which pays the winner 65% of the jackpot instantly. In either case 30% of the winnings will be withheld for tax. Design a program to do the following. Ask the user to enter the jackpot amount. Calculate and display how much money the winner will receive annually before tax and after tax if annual installments is chosen. Also calculate and display how much money the winner will receive instantly before and after tax if cash option is chosen.
Answer:
// here is code in C++.
#include <bits/stdc++.h>
using namespace std;
int main()
{
// variables
double jack_amount;
int choice;
double before_tax, after_tax;
cout<<"Please enter the jackpot amount:";
// read the amount
cin>>jack_amount;
cout<<"enter Payment choice (1 for cash, 2 for installments): ";
// read the choice
cin>>choice;
// if choice is cash then find the instant amount before and after tax
if(choice==1)
{
before_tax=jack_amount*.65;
after_tax=(jack_amount*.70)*.65;
cout<<"instantly received amount before tax : "<<before_tax<<endl;
cout<<"instantly received amount after tax : "<<after_tax<<endl;
}
// if choice is installments then find the each installment before and after tax
else if(choice==2)
{
before_tax=jack_amount/20;
after_tax=(jack_amount*.70)/20;
cout<<"installment amount before tax : "<<before_tax<<endl;
cout<<"installment amount after tax : "<<after_tax<<endl;
}
return 0;
}
Explanation:
Read the jackpot amount from user.Next read the choice of Payment from user.If user's choice is cash then calculate 65% instantly amount received by user before and after the 30% tax.Print both the amount.Similarly if user's choice is installments then find 20 installments before and after 30% tax.Print the amount before and after the tax.
Output:
Please enter the jackpot amount:120
enter Payment choice (1 for cash, 2 for installments): 1
instantly received amount before tax : 78
instantly received amount after tax : 54.6
When passing data values between different machines with different operating systems what problems have to be solved?
Final answer:
When passing data values between different machines with different operating systems, several problems need to be solved, including file compatibility, encoding and character sets, and network connectivity.
Explanation:
When passing data values between different machines with different operating systems, there are several problems that need to be solved:
File Compatibility: Different operating systems may have different file formats and structures, making it difficult to open and read files created on one system on another system. For example, a file saved in a specific format on a Windows machine may not be compatible with a Mac machine.
Encoding and Character Sets: Different operating systems may use different encoding and character sets, which can lead to garbled or incorrect data when transferring files. For example, a file containing special characters in one encoding system may not be correctly interpreted by another system.
Network Connectivity: Transferring data between machines with different operating systems may require establishing compatible network connections and protocols. This can involve configuring firewalls, setting up appropriate network protocols, and ensuring both machines can communicate effectively.
To address these problems, various software and tools are available that enable file conversion, encoding conversion, and network compatibility. Additionally, establishing good communication channels and protocols between machines is essential for successful data transfer.
Add a single line comment same as before that states you are doing calculations.
Answer:
// you are doing calculations.
Explanation:
Here we add the single line comment i.e you are doing calculations by // forward slash. If you are making a comment more then the single line its better to use /* comments statements */.
For example:
/* print welcome on screen
print in nextline */
Following are the program in c++ language.
#include<iostream> // header file
using namespace std; // namespace
int main() // main method
{
int a=9,b=89; // variable declaration
// you are doing calculations.
int c=a+b;
cout<<c; // display c
return 0;
}
Output:98
In rolling a die four times, what is the odds that at least one 5 would appear?
Answer:
The probability that at least one 5 will appear in 4 rolls of die equals [tex]\frac{671}{1296}[/tex]
Explanation:
The given question can be solved by Bernoulli's trails which states that
If probablity of success of an event is 'p' then the probability that the event occurs at least once in 'n' successive trails equals
[tex]P(E)=1-(1-p)^{n}[/tex]
Since in our case the probability of getting 5 on roll of a die equals 1/6 thus we have p = 1/6
Applying the values in the given equation the probability of success in 4 rolls of die is thus given by
[tex]P(E)=1-(1-1/6)^{4}=\frac{671}{1296}[/tex]
Companies discourage their suppliers from joining their extranets.
True
False
Answer:
False
Explanation:
A controlled private network that can be used for information exchange by using internet technology and the telecom system of the public.
It allows the outside user with authentication to partially access the network for business information exchange securely.
Thus companies encourage the suppliers to use extranets to share information or operations related to a business so as not to lag behind in the technologically competitive era.
Companies actually encourage their suppliers to join their extranets as it can streamline communication, enhance collaboration, and improve efficiency in the supply chain. The statement is false.
Extranets are secure networks that extend internal company resources to external parties like suppliers, enabling shared access to information and data.
However, many companies may not actively encourage suppliers to join their extranets due to concerns over data security, privacy, and the complexity of managing external access.
Analyze the impact of economic factors on the development of IT strategy decisions at the enterprise level of the organization.
Answer:
The unstable economical factor affect on the development of the IT strategies. The economical condition also vary with the results which is basically depend upon the company product and services.
Due to weak economical factor, it become risky to the business in terms of economical growth, inflation rate and interest rate as these all are very important during the decision making process.
The economical factor are basically interlink with the political factor also. Interest rate also play an important role in the economical factor as it help in the growth and development of the company.
Answer and explanation:
Economic factors are those who influence the fluctuations of the economy. Among those factors we can identify interest rates, tax rates, law, policies, wages, and governmental activities. At the corporate level, in the Information Technology industry as in any other, those factors determine what decision entrepreneurs will take to conduct their businesses. Indirectly what investment managers will decide to choose, what the salary of the employees will be, what the size of production could be, and to what market the product could be offered.
[What is an ‘inspection’?
Answer:
The inspection is the process where the trained people inspect or check the important documents and design thoroughly. The main function of the inspection is to check the proper quality of the document and design by the process analyzing, testing and examining.
Inspection basically provide various benefits as it increase the quality of the system by examine properly so that the document must be error free.
Inspection is required in all the workplace so it help to increase the productivity and efficiency of the organization.
Java uses a right brace to mark the end of all compound statements. What are the arguments for and against this design?
Explanation:
The argument is for the right braces.The right braces are used for simplicity.The right brace always terminates a block of code or a function.
The argument against right brace is that when we see a right brace in a program,we are not obvious about the location of the corresponding left brace because all or multiple statement end with a right brace.
Final answer:
Java's use of right braces to end compound statements ensures clear visual demarcation and structured code. However, it can also introduce syntax errors if not used correctly and limits coding style flexibility. The strict syntax provided by braces can be beneficial in preventing logic errors, especially when used with consistent indentation and statement-ending semicolons.
Explanation:
Using a right brace { } in Java to mark the end of compound statements is a design choice with its own set of pros and cons. One of the arguments in favor of this approach is the visual clarity it provides. With braces, it is immediately evident where a block of code begins and ends, which can be especially helpful with nesting multiple layers of logic and scopes within each other. Proper use of braces in conjunction with consistent indentation practices can greatly enhance the readability of the code.
On the other hand, there are some arguments against the obligatory use of braces, primarily focused on the potential for errors and the rigidity it imposes on coding style. For instance, if a programmer forgets to include a closing brace or places it incorrectly, it can lead to a syntax error. Furthermore, this requirement enforces a certain structure which might reduce the flexibility that programmers have in laying out their code, as seen in languages like Python which uses indentation rather than braces to denote blocks of code.
Additionally, in languages like JavaScript, omitting braces for single-line control structures is permissible, which can lead to more concise code but also introduces the potential for inconsistently coded programs and harder to detect logical errors. Therefore, while using braces imposes a strict syntax, it can prevent some types of logic errors that might occur when they are optional. The use of semicolons (;) at the end of each statement is another syntactic rule that complements the use of braces, indicating the end of one statement and the start of another.
Which component in a desktop PC converts electricity from AC to DC?
-SSD
-CPU
-PCIe Slot
-Power Supply
Answer:
Power Supply
Explanation:
A power supply unit in a Desktop PC converts AC power from the mains to low-voltage DC power needed by the computer. The power supply, commonly referred to as the PSU, is the metal box usually found in the corner of the case connected to the power through a cord. The PSU uses the switcher technology to convert AC input to DC. The typical voltages used are 3.3, 5, and 12 volts.
Answer: power supply
Write an if-else statement with multiple branches. If givenYear is 2101 or greater, print "Distant future" (without quotes). Else, if givenYear is 2001 or greater (2001-2100), print "21st century". Else, if givenYear is 1901 or greater (1901-2000), print "20th century". Else (1900 or earlier), print "Long ago". Do NOT end with newline.
Answer:
// here is code in c.
#include <stdio.h>
// main function
int main()
{
// variable to store year
int year;
printf("enter year:");
// read the year
scanf("%d",&year);
// if year>=2101
if(year>=2101)
{
printf("Distant future");
}
//if year in 2001-2100
else if(year>=2001&&year<=2100)
{
printf("21st century");
}
//if year in 19011-2000
else if(year>=1901&&year<=2000)
{
printf("20th century");
}
// if year<=1900
else if(year<=1900)
{
printf("Long ago");
}
return 0;
}
Explanation:
Read the year from user.After this, check if year is greater or equal to 2101 then print "Distant future".If year is in between 2001-2100 then print "21st century".If year is in between 1901-2000 then print "20th century".Else if year is less or equal to 1900 then print "Long ago".
Output:
enter year:2018
21st century
Answer:
if ( givenYear >= 2101 ) {
System.out.print("Distant future");
}
else if (givenYear >= 2001 ){
System.out.print("21st century");
}
else if ( givenYear >= 1901 ) {
System.out.print("20th century");
}
else {
System.out.print("Long ago");
}
Explanation:
If you are looking at the OSI model Protocol Stack, what layer is the only layer with both a header and trailer?
Answer: Data-link layer
Explanation:Data link layer is the second layer of the OSI(Open system interconnection) that functions by managing the movement of the data/information into physical link. This layer encapsulates both header and trailer.
Header is the part of data link layer that has the purpose of having control data and its activities which are added at the start of PDU(protocol data unit) like addressing .Trailer is the part that serves as containing the information of control which gets attached at the bottom part of the PDU
Given the following data definition
Array: .word 3, 5, 7, 23, 12, 56, 21, 9, 55
The address of the last element in the array can be determined by:
Array
Array + 36
36 + Array
Array + 32
40 + Array
Answer:
Array + 36.
Explanation:
The array contains the address of the first element or the starting address.So to find the address of an element we to add the size*position to the starting address of the array.Which is stored in the variable or word in this case.
There are 9 elements in the array and the size of integer is 4 bytes.So to access the last element we have to write
array + 4*9
array+36
What year was MCTC founded ? right answer 1996
Answer:
Minneapolis Community and Technical College was formed in February 1996
Explanation:
MCTC
Minneapolis Community and Technical College was formed in February 1996
this was Minneapolis Community and Technical College following by july 1955 latter it was merger and become MCTC in 1966
and
Chancellor of MCTC is Devinder Malhotra
and President is Sharon Pierce
it is situated at Minneapolis, Minnesota in United States of America
Minneapolis Community and Technical College (MCTC) was founded in 1996. It was established to provide educational services to the community.
Founding Year of MCTC
MCTC, short for Minneapolis Community and Technical College, was founded in 1996. This college was established to serve the educational needs of the community, offering a wide range of associate degrees and certification programs. Since its inception, MCTC has grown significantly and continues to play a crucial role in higher education.
What is the purpose of a filename extension? How can you restore a file that you deleted from the hard disk?
Answer:
The main purpose of the file name extension is that in the operating system it basically helpful for knowing the actual name of the file which we want to open in the system. The file name extension is also known as file suffix and file extension.
The file name extension are the character and gathering of the given characters after some time period that making the whole name of the record in the file system.
It basically enables a working framework, such as Windows and mac operating system (OS), figure out which programming on our PC the document is related with the particular file.
We can easily restore our file from hard disk system by two main ways as follows:
We can easily recover our file from the computer backup. Checked your deleted file in the recycle bin and then restore it.What types of tools are used in the process of a digital or network investigation?
Answer and Explanation:
The tools that are used in the network investigation process by the forensic departments in order to get better results while dealing with cyber crimes:
Some of the analysis tools are:
Tools for file analysisTools for Internet AnalysisEmail and Registry Analysis toolsDatabase and Network Forensic toolstools for analysis of mobile devices.File viewersTools for mac Operating system analysis.Tools to capture datafirewallsEncryption of networkLike in encryption of the data is encoded by cryptographic codes at the transmitting end and then decoded at the receiving end securely.
What is the purpose of the "def" keyword in Python?
a) It is slang that means "the following code is really cool"
b) It indicates the start of a function
c) It indicates that the following indented section of code is to be stored for later
d) b and c are both true
e) None of the above
Answer:
d) b and c are both true.
Explanation:
The purpose of def keyword in python is to indicate start the function and it also indicates that the piece of code following the def keyword is to stored so that it can later be used in the program.
For ex:
def check(n):
if n==10:
return True
return False
n=int(input("Enter an integer\n"))
if check(n):
print("n is 10")
else:
print("n is not 10")
In the above written code the function check is defined by using the keyword def.It also tells the interpreter to store the code because we will need it in future.
The correct option is (d) b and c are both true.
When The main purpose of the def keyword in python is to indicate the start of the function and also it indicates that the piece of code following the def keyword is to be stored so that it can later be used in the program.
PythonFor ex:
After that def check(n):
Then if n==10:
Now the return True
return False
After that n=int(input("Enter an integer\n"))
Then if check(n):
Now, print("n is 10")
else:
print("n is not 10")
In the above-written code that is the function of the check is defined by using the keyword def. It also tells the interpreter to store the code because we will need it in the future.
Find out more information about Python here:
https://brainly.com/question/14492046
What is the fundamental difference between a fat-client and a thin-client approach to client server systems architectures?
Client server architecture
In this set up, the servers are workstations which perform computations or provide services such as print service, data storage, data computing service, etc. The servers are specialized workstations which have the hardware and software resources particular to the type of service they provide.
Examples
1. Server providing data storage will possess database applications.
2. Print server will have applications to provide print capability.
The clients, in this set up, are workstations or other technological devices which rely on the servers and their applications to perform the computations and provide the services and needed by the client.
The client has the user interface needed to access the applications on the server. The client itself does not performs any computations while the server is responsible and equipped to perform all the application-level functions.
The clients interact with the server through the internet.
Clients can be either thin client or thick (fat) client.
The differences in them are described below.
1. Thin client, as per the name, performs minimal processing. Thick or fat client has the computational ability necessary for the client.
2. The thin client possesses basic software and peripherals and solely relies on the sever for its functionalities. Fat client has the resources needed to do the processing.
3. The user interface provided by the thin client is simpler and not rich in multimedia. The user interface provided by the fat client is much better and advanced.
4. Thin client relies heavily on the server. Fat client has low dependency on the server.
5. In the thin client set up, servers are present in more number. In this set up, servers are present in less number.
6. Each server handles a smaller number of thin clients since all the processing is done at the server end. Each server handles more thick clients since less processing is done at the server end.
Extended ACLs can filter traffic based on _____. (Points : 3) protocol type
source IPv4 address
source TCP or UDP ports
All of the above
Answer: All of the above
Explanation: Extended Access Control Lists(ACL) is the system that works between the Source IP address and the destination IP address for the granting or denying the permission for the traffic flow. This has very certain functioning and allow the traffic on the basis of the protocols such as TCP(transmission control protocol),UDP(user datagram protocol) etc.
All the given option are correct because IPv4(internet protocol version 4), TCP pots and UDP ports are the protocol types for source and can be filtered through extended ACL. Thus the correct option is all of the above.
Dеclarе and allocatе mеmory (on thе hеap) for a two-dimеnsional array of strings namеd carMakеs with 20 rows, еach with 6 columns
Answer:
string ** carMakes=new string*[20];
for(int i=0;i<20;i++)
{
carMakes[i]=new string[6];
}
Explanation:
The above written piece of code is in C++ and it will declare and allocate memory on the heap for a 2-D array of strings with the number of rows 20 and number of columns 6 with name of the array carMakes.
To declare a 2-D array in C++ we use new keyword.
By defeaut, Excel cells are top aligned
a. True
b. False
Answer: True
Explanation:
Yes, the given statement is true that the by default the excel cells are basically aligned at the top. We can easily change the alignment horizontally and vertically in the cell.
In the excel we can change the alignment by selecting the particular cell and then, click on the options to select the particular tab to change the alignment of the cell. By default, the excel cell are aligned at the top and and the text are align at the left by default.
Sammy's Seashore Supplies rents beach equipment such as kayaks, canoes, beach chairs, and umbrellas to tourists. Write a program that prompts the user for the number of minutes he rented a piece of sports equipment. Compute the rental cost as $40 per hour plus $1 per additional minute. (You might have surmised already that this rate has a logical flaw, but for now, calculate rates as described here. You can fix the problem after you read the chapter on decision making.) Display Sammy's motto with the border that you created in the SammysMotto2 class in Chapter 1. Then display the hours, minutes, and total price. Save the file as SammysRentalPrice.java.
Answer:
// here is code in java.
import java.util.*;
// class definition
class SammysRentalPrice
{
// main method of the class
public static void main(String[] args) {
// scanner object to read input from user
Scanner s=new Scanner(System.in);
// ask user to enter year
System.out.print("Enter the rented minutes:");
// read minutes
int min=s.nextInt();
// find hpurs
int hours=min/60;
// rest of minutes after the hours
min=min%60;
// total cost
int tot_cost=(hours*40)+(min*1);
// print hours,minute and total cost
System.out.println("total hours is: "+hours);
System.out.println("total minutes is: "+min);
System.out.println("total cost is: "+tot_cost);
}
}
Explanation:
Read the rented minutes of an equipment from user with the help of scanner object. Calculate the hours and then minutes from the given minutes.Calculate the cost by multiply 40 with hours and minute with 1.Add both of them, this will be the total cost.
Output:
Enter the rented minutes:140
total hours is: 2
total minutes is: 20
total cost is: 100
Final answer:
To write a program that calculates the rental cost for Sammy's Seashore Supplies, you can follow these steps: Prompt the user for the number of minutes the equipment was rented. Convert the minutes to hours by dividing by 60. Calculate the rental cost using the formula: total cost = (hours * $40) + (additional minutes * $1). Display Sammy's motto with the border. Display the hours, minutes, and total price using appropriate formatting.
Explanation:
To write a program that calculates the rental cost for Sammy's Seashore Supplies, you can follow these steps:
Prompt the user for the number of minutes the equipment was rented.Convert the minutes to hours by dividing by 60.Calculate the rental cost using the formula: total cost = (hours * $40) + (additional minutes * $1).Display Sammy's motto with the border.Display the hours, minutes, and total price using appropriate formatting.Here is an example code snippet in Java:
import java.util.Scanner;Remember to replace the motto and the border with the actual display. Also, make sure to add error handling and input validation as needed.
What is an independent data mart?
Answer: Independent data mart is the subset of data that is obtained from the data warehouse in independent form. Various traits are used for the display of the independent data marts.They are built in the independent manner from each other .
It is utilized by the organization for the analysis of the certain unit of data in compact form. Independent data mart does not persist the central data warehouse. The operational sources gets distributed in the independent section known as data marts. It is usually preferred by small organizations.
The data field in an ethernet frame contains between 46 and _______ bytes of information.
Answer: 1500 bytes
Explanation:
In the ethernet frame, the data field basically contain 46 to 1500 bytes of information.
The ethernet frame begins with the header, that basically contains MAC addresses source and its destination in the network, along with some other information. The center part of the given frame contain genuine information. The edge of the frame closes with the field known as Frame Check Sequence (FCS).
The tag information or data is also being added for creating the particular data field of the MAC client.