Final answer:
A sorted array is the most efficient data structure for searching and retrieving existing items in a collection of fixed data.
Explanation:
The most efficient data structure to use for a collection of fixed data that needs efficient search and retrieval operations is a sorted array. A sorted array allows for fast search times using binary search, which has a time complexity of O(log n). This is because the elements in the array are sorted in a specific order, allowing for efficient comparisons.
In contrast, a linked list would require sequential traversal, resulting in a time complexity of O(n). A binary search tree can also provide efficient search times with a time complexity of O(log n), but it requires additional space for storing the tree structure.
A queue is not suitable for this task, as it is designed for adding and removing items, not for searching and retrieving existing items. Therefore, the most efficient data structure for this task is a sorted array.
You have several pictures of different sizes that you would like to frame.A local picture framing store offers two types of frames—regular andfancy. The frames are available in white and can be ordered in any colorthe customer desires. Suppose that each frame is 1 inch wide. The costof coloring the frame is $0.10 per inch. The cost of a regular frame is$0.15 per inch and the cost of a fancy frame is $0.25 per inch. The costof putting a cardboard paper behind the picture is $0.02 per square inchand the cost of putting glass on top of the picture is $0.07 per square inch. The customer can also choose to put crowns on the corners,which costs $0.35 per crown. Write a program that prompts the userto input the following information and then output the cost of framing the picture:a. The length and width, in inches, of the picture.b. The type of the frame.c. Customer's choice of color to color the frame.d. If the user wants to add the crowns, then the number of crowns.
Answer:
written in java
Note : Package name was excluded
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
//declared 8 uninitialised variable
String input;
double cost, colorC, frameC, paperC, glassC, crownC;
char crowns;
int type, color, crown, length, width, area, perimeter;
//creating an instance of the Scanner class to accept value from user
Scanner scanner = new Scanner(System.in);
System.out.print("Enter length of frame: ");
length = scanner.nextInt();
System.out.print("Enter width of frame: ");
width = scanner.nextInt();
System.out.print("Do you want a fancy frame or a regular frame\nEnter 1 for fancy, 2 for regular: ");
type = scanner.nextInt();
if (type == 1) {
frameC = 0.25;
} else {
frameC = 0.15;
}
System.out.print("Do you want a white frame or a colored frame\nEnter 1 for white, 2 for colored: ");
color = scanner.nextInt();
if (color == 2) {
colorC = .10;
} else{
colorC = 0;
}
System.out.print("Do you want crowns \nEnter y for yes, n for no ");
input = scanner.next();
crowns = input.charAt(0);
if (crowns == 'y' || crowns == 'Y') {
System.out.print("How many crowns?");
crown = scanner.nextInt();
} else
crown = 0;
if (crown > 0)
crownC = crown * .35;
else
crownC = 0;
area = length * width;
perimeter = length * 2 + width * 2;
paperC = area * .02;
glassC = area * .07;
cost = glassC + paperC + crownC + colorC * perimeter + frameC * perimeter;
System.out.println("The cost of your frame is: $" + cost);
}
}
P3. In Section 4.2 , we noted that the maximum queuing delay is (n–1)D if the switching fabric is n times faster than the input line rates. Suppose that all packets are of the same length, n packets arrive at the same time to the n input ports, and all n packets want to be forwarded to different output ports. What is the maximum delay for a packet for the (a) memory, (b) bus, and (c) crossbar switching fabrics?
Answer:
All points are explained below in detail.
I hope it will help you
Explanation:
A dictionary attack works by hashing all the words in a dictionary and then comparing the hashed value with the system password file to discover a match.
A. True
B. False
Answer:
True
Explanation:
A dictionary attack is an attempts to gain illegal access to a computer system by hashing all the words in a dictionary and then systematically entering each hashed value as a password so as to discover a match. it has been the most successful password guessing technique over the years because many users and organization use ordinary words as passwords.
Alice is working on a web page to attract the maximum number of people to join her cause. She wants to inform people about the benefits of adopting eco-friendly methods of living. Which writing style should she use to get visitors to join her cause?
A. formal writing style
B. informal writing style
C. standard writing style
D. persuasive writing style
#.
Answer:
Option D. Persuasive writing style
is correct answer.
Explanation:
Alice should adopt the persuasive writing style as she wants to convince the people to adopt eco-friendly methods of living.When a person write persuasively, this means he/she will present justifications and reasons for that specific opinion he/she is trying to convince the audience.For the correctness of their opinion, different kinds of evidences are prepared so that the fact persuade the reader.Persuasive writing is used widely while writing academic papers, advertisements and argumentative essays as well.i hope it will help you!Answer:
D.) persuasive writing style
Explanation:
What is the purpose of using self.id in tests, while working with unittest?A. self.id returns the name of moduleB. self.id returns the name of methodC. self.id returns the name of classD. self.id returns reference value
Answer:
B. self.id returns the name of method.
Describe precisely what the routers can send back to make prohibited outgoing TCP connections fail quickly. (Assume they cannot make any changes to the TCP implementation on clients.)
Answer:
See the explanation
Explanation:
1. The router can send back an ICMP error code indicating what happened in this case.
2. If you send back an ICMP error code, the user's connection attempt will fail immediately, otherwise it will time out which will take several minutes.
There are two types of ICMP codes they are destination unreachabl and destination administratively unreachable:
- The first pair of ICMP error codes(destination unreachable)might return, host unreachable and network unreachable. It is designed to indicate serious network problems.
- The second set of ICMP error codes the (destination administratively unreachable)might return, host administratively unreachable and network administratively unreachable.It is added to the official list of ICMP message types later, specifically to return when they dropped a packet.
If your router returns an ICMP error code for every packet that violates your filtering policy you are also giving an attacker a way to probe your filtering system.
If your router offers enough flexibility, it might make sense to configure it to return ICMP error codes to internal systems (which would like to know immediately that something is going to fail, rather than wait for a timeout) but not to external systems.
Hope this helps!
A line in the Agile Manifesto reads, "____________ and _____________ over processes and tools". Please select which option best completes the statement. Select one:
a. People; Relationships
b. Customer; Individuals
c. Customers; Employees
d. Individuals; Interactions
Answer:
Option D i.e., Individuals; Interactions is the correct option.
Explanation:
Because Agile Manifesto is the development software tool that is used to reads the line for the individuals and it also interacts with the process of the user. It also used to collaborate with their customers to negotiates the contacts of the customers.
Other option is not correct because they are not related to the following statement.
What should you double check for some reason its not working? You have created a workflow rule to send an email in your configuration sandbox.
A. You have the correct email address
B. HTML does not work in sandbox, make sure your email has no HTML
C. Check the deliverability settings
D. Look at the system audit trail
Answer:
Option A and C are the correct options
Explanation:
The following options is true because when the user created the flow of the work rule for sending an email in their configuration sandbox then, the user correct these email address and also users can examine their deliverability setting.
Option B is false because the HTML also works in the sandbox.
Option D is false because the audit trail did not look at the system.
#include ... void sig_handler(){ static int i = 1; printf("Beep\n"); alarm(i); ++i; } int main(){ struct sigaction sa; sa.sa_flags = 0; sa.sa_handler = sig_handler; if(sigaction(SIGALRM, &sa, NULL) != 0){ printf("Failed to bind handler.\n"); exit(1); } printf("Going into an infinite loop.\n"); alarm(1); while(1); return 0; }
Suppose the above program is run for 7.5 seconds after it prints "Going into an infinite loop". The program is run multiple times where the "system load" from other processes sharing the cpu will vary from none to many other processes. Which best characterizes how many times "Beep" is printed?
Answer:
Explained below
Explanation:
After the compiling the program it prints "Going to infinite loop" after that i started the timer till 4.5 sec. The program prints more than 4 beeps nearly 6-7 beep messages were printed.
The number "Beep" would always be strictly greater than 4.
Hence, if the above program is run for 7.5 seconds after it prints "Going in an infinite loop", it will print Beep for about 9-10 times. Hence, the number will always be greater than 7
What advantages do stack parameters have over register parameters?a. Programs using stack parameters execute more quickly.b. Register parameters are optimized for speed.c. Stack parameters reduce code clutter because registers do not have to be saved and restored.d. Stack parameters are compatible with high-level languages.
Answer:
C. Stack parameters reduce code clutter because registers do not have to be saved and restored.
D. Stack parameters are compatible with high-level languages.
Explanation:
The advantages stack parameters have over register parameters are that stack parameters reduce code clutter because registers do not have to be saved and restored and are also compatible with high-level languages.
Create a VBScript script (w3_firstname_lastname.vbs) that takes one parameter (folder name) to do the following
1) List all files names, size, date created in the given folder
2) Parameter = Root Folder name The script should check and validate the folder name
3) Optionally, you can save the list into a file "Results.txt" using the redirection operator or by creating the file in the script.
4) Make sure to include comment block (flowerbox) in your code.
5) Sample run:- C:\entd261>cscript.exe w3_sammy_abaza.vbs "c:\entd261" >results.txt
Answer:
VBScript is given below
Explanation:
As per the given details the program should be as follows:
if (WScript.Arguments.Count = 0) then
WScript.Echo "Missing parameters"
else
'Declare the File System object to be used
Dim fso
'Declare the path variable to be used for storing the path entered by user
Dim path
'Create the File System object using the FileSystemObject class
Set fso = CreateObject("Scripting.FileSystemObject")
'initialize the path
path = WScript.Arguments(0)
'Check if the path exists
exists = fso.FolderExists(path)
if (exists) then
'declare a constant of size 1024 since 1024 bytes = 1 Kb
CONST bytesToKb = 1024
'Print the selected path
WScript.Echo "Selected Path " & WScript.Arguments(0)
'get the folder on path
Set inDir=fso.GetFolder(path)
'Create the file to store the output results
Set outFile = fso.CreateTextFile("Results.txt",True)
'Print the name, date created and size of each file and store the same in output file
For Each objFile in inDir.Files
'Calculate the padding needed for File Name. Assuming the maximum length of file name is 40 characters
namePadding = 40 - Len(objFile.Name)
'Calculate the padding needed for Date
datePadding = 30 - Len(objFile.DateCreated)
'Add spaces to file Name so that same can be printed in a tabular format
fileName = objFile.Name & Space(namePadding)
'Add spaces to date so that same can be printed in a tabular format
dateCreated = objFile.DateCreated & Space(datePadding)
'Print the details on screen
Wscript.Echo fileName & dateCreated & CINT(objFile.Size / bytesToKb) & "Kb"
'Store the details in ouput file with a newline character at the end
outFile.Write fileName & dateCreated & CINT(objFile.Size / bytesToKb) & "Kb" & vbCrLf
Next
'Close the output file once the loop ends
outFile.Close
else
'Print a message if the path does not exist
WScript.Echo "Invalid Path Entered"
end if
end if
In this exercise we have to use the programming knowledge to program from python in this way, so:
The code to solve this programming can be found in the image attached below.
As per the given details the program should be as follows:
if (WScript.Arguments.Count = 0) then
WScript.Echo "Missing parameters"
else
'Declare the File System object to be used
Dim fso
'Declare the path variable to be used for storing the path entered by user
Dim path
'Create the File System object using the FileSystemObject class
Set fso = CreateObject("Scripting.FileSystemObject")
'initialize the path
path = WScript.Arguments(0)
'Check if the path exists
exists = fso.FolderExists(path)
if (exists) then
'declare a constant of size 1024 since 1024 bytes = 1 Kb
CONST bytesToKb = 1024
'Print the selected path
WScript.Echo "Selected Path " & WScript.Arguments(0)
'get the folder on path
Set inDir=fso.GetFolder(path)
'Create the file to store the output results
Set outFile = fso.CreateTextFile("Results.txt",True)
For Each objFile in inDir.Files
namePadding = 40 - Len(objFile.Name)
'Calculate the padding needed for Date
datePadding = 30 - Len(objFile.DateCreated)
fileName = objFile.Name & Space(namePadding)
dateCreated = objFile.DateCreated & Space(datePadding)
'Print the details on screen
Wscript.Echo fileName & dateCreated & CINT(objFile.Size / bytesToKb) & "Kb"
'Store the details in ouput file with a newline character at the end
outFile.Write fileName & dateCreated & CINT(objFile.Size / bytesToKb) & "Kb" & vbCrLf
Next
'Close the output file once the loop ends
outFile.Close
else
'Print a message if the path does not exist
WScript.Echo "Invalid Path Entered"
end if
end if
See more about python at brainly.com/question/26104476
Suppose a computer using direct mapped cache has 220 bytes of byte-addressable main memory, and a cache of 32 blocks, where each cache block contains 16 bytes. a. How many blocks of main memory are there? b. What is the format of a memory address as seen by the cache, i.e., what are the sizes of the tag, block, and offset fields? c. To which cache block will the memory address 0DB6316 map?
Answer:
Following are given answers to each part as required.
I hope it will help you!Explanation:
Physical access, security bypass, and eavesdropping are examples of how access controls can be ________.
Answer: Compromised
Explanation:
Access control is the controlling and management unit for handling the access of any user on a particular system. It implements a selective restriction on the users to access the function of computing system.
Authorized and permitted user are allowed to access the services and unauthorized party is not allowed for accessing the resources of the system. Permissible user can perform any task and consume service device.Compromising in access control depicts about intruding and spying of unauthorized user in devices that is eavesdropping. Security bypass is fault that lets the access to access system by another route.Thus, flaw in access control occurs then security of controlling and managing the system will be at risk as hacker and attacker can get access to perform function.Final answer:
Physical access, security bypass, and eavesdropping can compromise access controls that protect information within an organization. Implementing strong access control policies helps prevent unauthorized access and data breaches.
Explanation:
Physical access, security bypass, and eavesdropping are examples of how access controls can be compromised.
Access control mechanisms are critical for protecting the confidentiality, integrity, and availability of information. When these controls fail or are bypassed, it can lead to unauthorized access and potentially to the leakage or corruption of sensitive data. Physical access refers to situations where an unauthorized individual gains direct access to hardware or systems. Security bypass occurs when normal security procedures are avoided or circumvented, often due to system or human vulnerabilities. Eavesdropping is the act of secretly listening to private conversations or monitoring transmissions, which can be a form of information theft.
Organizations must implement strong access control policies and measures, including physical security, authentication protocols, and encryption, to reduce the risk of these types of compromises and to safeguard their information assets effectively.
Write an abstract superclass encapsulating a college applicant:
A college applicant has two attributes: the applicant’s name and the college the applicant is applying to.
This class has two non-abstract subclasses: one encapsulating an applicant for undergraduate school, and the other encapsulating an applicant for graduate school.
An applicant for undergraduate school has two attributes: a SAT score and a GPA. An applicant for graduate school has one additional attribute: the college of origin.
It also has a method that returns "from inside" if the college of origin is the same as the college applied to; otherwise, it returns "from outside".
You also need to include a class to test two classes.Java please.
Answer:
The code snippet file is attached. There are four files:
Abstract Applicant ClassThe Graduate ClassThe Undergraduate classThe TestApplicantClassThe code is well commented and explanatory.
Explanation:
Sales and marketing users have similar roles, and use similar record types. However, sales uses 3 different fields and marketing has 5, how do you set up processes most efficiently?
A. 2 page layouts, 2 record types, 2 profiles
B. 2 page layouts, 1 record type, 2 profiles
C. 1 page layout, 2 record types, 2 profiles
D. 1 page layout, 1 record type, 1 profile
Answer:
B. 2 page layouts, 1 record type, 2 profiles
Explanation:
The most efficient way to setup the process is by setting 2 page layouts, 1 record type and also 2 profiles.
Consider the following 3 programs:
1
//contents of file foo.c:
static int a = 5;
int main() {
f();
return 0;
}
//contents of file bar.c:
static int a = 10;
void f() {
printf("%d\n", a);
}
2
//contents of file foo.c:
int a = 5; int main() {
f();
return 0;
}
//contents of file bar.c:
void f() { int a = 10;
printf("%d\n", a);
}
3
//contents of file foo.c:
int a = 5;
int main() {
f(); return 0;
}
//contents of file bar.c:
int a;
void main() {
printf("%d\n", a);
}
If the command "gcc foo.c bar.c" is executed, which of the above programs result in a linker error?
Answer:
If the following programs are executed then Program 2 results "linker error"
Explanation:
Because In program 1, which is in the C Programming Language they declare the integer data type variable "a" as static in both files, so the scope of the static member is in the file or method then, the output of the following Program 1 is 10.
In the Program 2, which is in the C Programming Language they declare the integer data type variable in both files with initialization of 5 and 10, so when they execute the following Program 2 then, it occurs an "linker error" because the following program cannot find the value of the integer variable a.
In the Program 3, which is in the C Programming Language they declare the integer data type variable in both files but they initialize in the file "foo.c" is 5 and not initialize in the file "bar.c", so when they execute the following Program 3 then, its output is 5.
A hacktivist is someone who _______.
a. attempts to gain financially and/or disrupt a company’s information systems and business operations
b. attempts to destroy the infrastructure components of governments
c. hacks computers or Web sites in an attempt to promote a political ideology
d. violates computer or Internet security maliciously or for illegal personal gain
Answer:
A hacktivist is someone who hacks computers or Web sites in an attempt to promote a political ideology
Explanation:
Computer hacking is the process in which attacker or outsiders try to access the data of the company or some personnel data to damage the reputation.
Now a days, computer hacking in terms of politics is also adopted by different attackers to damage the reputation of some politician. This type of hacker are called hacktivist.
In evaluating a loop, you find the following statement:
"value += 1".
What happens to the value variable upon each iteration of the loop?
Group of answer choices:
A. The variable's value is changed to a positive value.
B. The variable is reset to an int type, with a value of 1.
C. The variable is incremented by itself.
D. The variable is increased by 1 each iteration through the loop.
Answer:
D) The variable is increased by 1 each iteration through the loop
Explanation:
In Most popular programming languages such as java, c++, python etc, there is a variance to the simple assignment operator. (=). This variance is called a compound assignment operator. Compound operators come in different styles for example
x = x+1 equivalent x+=1
x = x-1 equivalent x- =1
x = x/y equivalent x/=y
In the question scenario value += 1 is equivalent to value = value+1. Compound operators are important in providing short hands while coding as well as helping the programmer from having to cast variable types explicitly
Given below is information about a network.
Choose one of the following three options:
A. the network is definitely a tree;
B. the network is definitely not a tree;
C. the network may or may not be a tree (more information is needed).
Accompany your answer with a brief explanation for your choice. The network has 11 vertices and 11 edges.
Answer:
Option (B) is the correct answer.
Explanation:
The network is used to share the information between two or more persons or systems in a connected pair. It has vertices and edges on which vertices mean the points which participate to communicate and edges are used for the medium by which communication is done.
The network can make the shape of a tree or not. If it follows the property of a tree we can say that it is a tree otherwise it can not be called a tree.
Here in the question, it is a given that there are 11 vertices and 11 edges.
But from the tree property if there are n vertices and n-1 edges then any circuit is called a tree, But this circuit has n edges and n vertices that's why it is not a tree. Hence option b is the correct answer.
While other is not valid because-
Option "a" suggests that this circuit is a tree that is not correct.Option b suggests that this circuit may or may not a tree but it is proved that this circuit is not a tree.Write a program that takes two numbers from the Java console representing, respectively, an investment and an interest rate (you will expect the user to enter a number such as .065 for the interest rate, representing a 6.5% interest rate). Your program should calculate and output (in $ notation) the future value of the investment in 5, 10, and 20 years using the following formula:
future value = investment * (1 + interest rate)^year
We will assume that the interest rate is an annual rate and is compounded annually.
Answer:
in this case you have to use a For cycle
Explanation:
This is the entire code for this program
Step 1: We declare two variables investment and interest with double, and we take the numbers with the console.
We ask with console the two numbers
We show the two number in console
Step 2: We create two new double variable: Value and cont5
We save the formula in the variable Value
We create 3 For cycle
the first one for 5 years
the second one for 10 years
the third one for 20 years
package javaapplication6;
import java.util.*;
public class JavaApplication6 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
double investment;
double interest;
Scanner keyboard = new Scanner(System.in);
System.out.println("Enter the investment");
investment = keyboard.nextDouble();
System.out.println("Enter the interest" );
interest = keyboard.nextDouble();
System.out.println("With an investment of $"+investment);
System.out.println("an interest rate of "+interest+"% compounded annually:");
double Value = investment * (1+interest);
double cont5 = Value;
//int Value = getValue(investment,interest,5);
for(int year = 1; year <= 4; year++){
cont5 = cont5 * Value;
}
System.out.println("In 5 years the value is : "+"$"+cont5);
double cont10 = Value;
//Value = getValue(investment,interest,10);
for(int year = 1; year <= 9; year++){
cont10 = cont10 * Value;
}
System.out.println("In 10 years the value is : "+"$"+cont10);
double cont20 = Value;
//Value = getValue(investment,interest,20);
for(int year = 1; year <= 19; year++){
cont20 = cont20 * Value;
}
System.out.println("In 20 years the value is : "+"$"+cont20);
}
}
To create the array variable named ar, you would use :A. int ar;
B. int() ar;
C. int[] ar;
D. None of these
Answer: (C)
Explanation:
You can declare it as:
int[ ] ar; or
int ar[ ];
Final answer:
To create an array variable named 'ar', the correct syntax is 'int[] ar;'. This declares 'ar' as an array of integers,
Therefore, the correct answer is option c 'int[] ar;'
Explanation:
To create an array variable named ar in many programming languages such as Java, you would use the syntax provided in option C: int[] ar; This line of code defines an array of integers. The square brackets ([]), which come after the data type, tell the compiler that this variable will be used as an array, which can store multiple values of the specified type, in this case, integers.
Write a program that uses nested loops to collect data and calculate the average rainfall over a period of years. The program should first ask for the number of years. The outer loop will iterate once for each year. The inner loop will iterate four times, once for each quarter. Each iteration of the inner loop will ask the user for the inches of rainfall for that quarter.
Answer & Explanation:
Written in java
import java.util.Scanner;
public class Main{
public static void main(String[] args) {
int totalRainfall = 0;
int rainfall;
Scanner keyboard = new Scanner(System.in);
int year;
do {
System.out.println("Enter number of year(s): value must be greater than 0");
year = keyboard.nextInt();
} while (year < 1);
// {
//
// System.out.println("Invalid input, please enter a number greater than zero ");
//
// year = keyboard.nextInt();
//
// }
for (int i = 0; i < year; i++) {
for (int quarter = 1; quarter <= 4; quarter++) {
int currentYear = 1 + i;
System.out.println("Enter the inches of rainfall for year " + currentYear + " quarter " + quarter);
rainfall = keyboard.nextInt();
if(rainfall > -1){
totalRainfall += rainfall;
}
while (rainfall < 0) {
System.out.println("Enter the inches of rainfall for year " + currentYear + " quarter " + quarter +": value must be greater or equal to 0 ");
rainfall = keyboard.nextInt();
}
}
}
System.out.println("Average quarterly rainfall is: " + (totalRainfall/(year*4)));
System.out.println("Average yearly rainfall is: " + (totalRainfall/(year)));
}
}
Final answer:
A Python program is provided that calculates the average rainfall over a number of years. User inputs the number of years, then for each quarter of each year, the rainfall in inches. The program computes and outputs the average rainfall in inches and converts it to millimeters.
Explanation:
The program to calculate the average rainfall over a period of years will involve two nested loops. The outer loop will iterate through the number of years, while the inner loop will iterate through each quarter of a year. For each quarter, the program will collect the rainfall data in inches and calculate the average, eventually converting the final result to millimeters.
Python Code Example:
years = int(input('Enter number of years: '))
total_rainfall = 0
for year in range(1, years + 1):
for quarter in range(1, 5):
rainfall = float(input(f'Enter the inches of rainfall for year {year} quarter {quarter}: '))
total_rainfall += rainfall
average_rainfall_inches = total_rainfall / (years * 4)
average_rainfall_mm = average_rainfall_inches * 25.4
print(f'The average rainfall over {years} years is {average_rainfall_inches} inches or {average_rainfall_mm} mm.')
Write a function that takes in a nonnegative integer and sums its digits. (Using floor division and modulo might be helpful here!)def sum_digits(n):"""Sum all the digits of n.>>> sum_digits(10) # 1 + 0 = 11>>> sum_digits(4224) # 4 + 2 + 2 + 4 = 1212>>> sum_digits(1234567890)45 """
Answer:
def sum_digits(n):
sum=0
while n>0:
num=n%10 #will store digits of number
sum+=num #sums the digits
n=int(n/10)
return sum #sum of digits is returned
Explanation:
In the above method , n is the number whose digit sum is to be returned. Sum is the variable which will store the sum of digits. Then a while loop will be executed until n is greater than 0 then num will store the individual digits of number and those digits will be added in sum variable. After that, n will be divided by 10. As we want only int variable we will typecast it into int.
Write code to create a set with the following integers as members: 10, 20, 30, and 40.
Answer:
import java.util.*;
public class Create_set
{
public static void main(String args[])
{
Set<Integer> hset = new HashSet<Integer>(); //creating set using hashset of Integer type
hset.add(10); //add method add members to set
hset.add(20);
hset.add(30);
hset.add(40);
System.out.println(hset); //printing the set
}
}
OUTPUT :
[20,40,10,30]
Explanation:
The above code is implemented through java language. First a collection object is created using Set interface. Then that interface is implemented using Hashset class. As they are of generic datatype, Integer type is declared for this object. Then using add() method elements of the set are added and at last they are printed.
Set is an unordered collection which means elements can't be accessed through their particular position and no duplicate values are stored in sets.
________ symbol is used in the "Advanced" section of the time range picker to round down to nearest unit of specified time.
Answer:
@(at sign) is the correct answer to the following statement.
Explanation:
Because the following symbol is the "at sign" symbol that is used for the Advanced section in the time range picker that lets the user search for the specified time for the round down the closest entity of a particular period. So, that's why the following answer is correct for the following statement.
Which of the following is false? Group of answer choices A) A string may include letters, digits, and various special characters (i.e., +, -, * ) B) String literals are written inside of single quotesC) A string may be assigned in a definition to either a character array or a variable of type char * D) A string in C is an array of characters ending in the null character (‘\0’)
Answer:
Option (b) is the correct answer.
Explanation:
Here in option "D", "C" language is used, so the answer is given on the behalf of "C" language and in "C" language, the String is written in double quotes which are opposite of option "b" hence it is a wrong statement. hence it is the correct option for this question.
The String is also called a word in the English language which is made of character. So in C programming language, a user needs to create a character array to store the string because the array is used to create multiple variables of the same type and variable is used to store the data.
In any programming language character array is used to store the string but for back-end and the user uses String data type for the front-end.
Option a states that the string is made up of character, letter, digits and special symbol which is correct.Option c states that a string is assigned on the character array which is correct.Option d states that the last character of the "String" is the "NULL" character which is also right.
The false statement is B) String literals are written inside of single quotes.
Explanation:The false statement among the given options is B) String literals are written inside of single quotes. In programming languages like C, C++, and Java, string literals are written inside double quotes, not single quotes. For example, "Hello, World!" is a string literal.
Each 4G device has a unique Internet Protocol (IP) address and appears just like any other wired device on a network
A. True
B. False
Answer:
A. True.
Explanation:
It is true that each 4G device has a unique Internet Protocol (IP) address and appears just like any other wired device on a network.
What is the importance of having standard framework for networking and the evolution of networks?
Answer:
Generally, a framework is more comprehensive and perspective than a protocol and a structure.
Explanation:
Importance of standard framework for the evolution of the networks:
The two dealer systems can not directly communicate because every different dealer follows different apparatus and protocols.Used for communicating across different networks.There are two types of the framework used in computer networks, these are as follows:
OSI Reference modelTCP/IP ModelTo communicate between the computer, a framework can be provided by any of the models either its OSI or TCP/IP.
A company has made the decision to host their own email and basic web services. The administrator needs to set up the external firewall to limit what protocols should be allowed to get to the public part of the company's network. Which ports should the administrator open? (Choose three.)
Answer:
Port 25
Port 53
Port 80
Explanation:
Port 25 is to be used for relaying messages between MTAs (Mail Transfer Agents) or from MSAs (Mail Submission Agents) to MTAs.
Port 53 is used by the Domain Name System (DNS), a service that turns human readable names like AuditMyPc.com into IP addresses that the computer understands. Because port 53 is usually open, malicious programs may attempt to communicate on it.
On a Web server or Hypertext Transfer Protocol daemon, port 80 is the port that the server "listens to" or expects to receive from a Web client, assuming that the default was taken when the server was configured or set up. By default, the port number for a Web server is 80.
Which of the following is the definition of registration authority ( RA)?
a. The process of applying an algorithm to cleartext (or plain text) data, resulting in a ciphertext.
b. The certificate authority’s list of invalid certificates.
c. The concept of ensuring that an originator cannot refute the validity of a statement or document.
d. An entity that is responsible for the registration and initial authentication of certificate subscribers.
Answer:
The correct answer following question will be Option D.
Explanation:
An authority that verifies the user requests for digital certificates and tells to the CA (Certificate authority) to issue the certificates, known as Registration Authority (RA). The digital certificate contains a key named "public key" which is used to encrypt and decrypt digital signatures.
Hence, registration authority, it's an entity that is responsible for the authentication of certificate and registration and the other given options are not relatable to this authority.
So, option D is the correct answer.