Answer:
If there’s one topic that trips people up (both new and experienced) in the networking industry, it is that of Subnetting.
One of the reasons this happens is that one has to perform (mental) calculations in decimal and also binary. Another reason is that many people have not had enough practice with subnetting.
In this article, we will discuss what Subnetting is, why it came about, its usefulness, and how to do subnetting the proper way. To make this article as practical as possible, we will go through many examples.
Note: While subnetting applies to both IPv4 and IPv6, this article will only focus on IPv4. The same concepts explained here can be applied to IPv6. Moreover, subnetting in IPv6 is more of a want rather than a necessity because of the large address space.
IP address network
For example, any traffic with a destination IP address of 192.168.1.101 will be delivered to PC1, while traffic addressed to 192.168.1.250 will be delivered to SERVER.
Note: This is an oversimplification of things just for understanding sake and refers to Unicast (one-to-one) IPv4 addresses. Traffic sent to Multicast (one-to-many) and Broadcast (one-to-all) IP addresses can be delivered to multiple devices. Also, features like Network Address Translation (NAT) allow one IP address to be shared by multiple devices.
To help your understanding of IP addresses and subnetting, you need to resolve the following fact in your head: Computers think in binary, that is, 0s and 1s. Therefore, even though we see an IP address represented like 192.168.1.250, it is actually just a string of bits – 32 bits in total for IPv4 addresses.
To make them more readable for humans, IPv4 addresses are represented in dotted decimal notation where the 32 bits are divided into 4 blocks of 8 bits (also known as an octet), and each block is converted to a decimal number.
For example, 01110100 in binary is 116 in decimal:
A unicast IPv4 address such as 192.168.1.250 can be divided into two parts: Network portion and Host ID. So what does this mean? Well, IPv4 addresses were originally designed based on classes: Class A to Class E. Multicast addresses are assigned from the Class D range while Class E is reserved for experimental use, leaving us with Class A to C:
Class A: Uses the first 8 bits for the Network portion leaving 24 bits for host IDs. The leftmost bit is set to “0”.
Class B: Uses the first 16 bits for the Network portion leaving 16 bits for host IDs. The two leftmost bits are set to “10”.
Class C: Uses the first 24 bits for the Network portion leaving 8 bits for host IDs. The three leftmost bits are set to “110”.
Note: The range of Class A is actually 1-126 because 0.x.x.x and 127.x.x.x are reserved.
With these classes, a computer/device can look at the first three bits of any IP address and determine what class it belongs to. For example, the 192.168.1.250 IP address clearly falls into the Class C range.
Looking at the Host ID portion of the classes, we can determine how many hosts (or number of individual IP addresses) a network in each class will support. For example, a Class C network will ideally support up to 256 host IDs i.e. from 00000000 (decimal 0) to 11111111 (decimal 255). However, two of these addresses cannot be assigned to hosts because the first (all 0s) represents the network address while the last (all 1s) represents the broadcast address. This leaves us with 254 host IDs. A simple formula to calculate the number of hosts supported
Explanation: Final answer is Start address: 192.168.58.0 + 1 = 192.168.58.1
End address: 192.168.58.16 – 2 = 192.168.58.14
Broadcast address: 192.168.58.16 – 1 = 192.168.58.15
A company is developing a smart TV that connects to a wireless home network. Which technology can best help to establish this connection?
Bluetooth
Infrared
C.
WI-FI
D
Internet of things
E
satellite
A company is developing a smart TV that connects to a wireless home network. Which technology can best help to establish this connection?
C. Wi-Fi.
Question # 2
Dropdown
Identify the type of error described.
___5 / 0
___ float('two')
Answer:
ZeroDivisionError
ValuError
Explanation: Edg 2020-2021
Answer:
1.ZeroDivisionError
2.ValueError
Explanation:
took test
PLEASE HELP ME WITH THIS i will mark you brainlist
Answer: you have to check your email and click on the microsoft email they sent you and enter the code in the email.
Explanation: plz mark brainliest
Please help,it’s a year 9 question
Answer:
For an AND gate, Q would be 0,0,0,1 respectively.
See the reference table below.
Elza hos a document with plain text. She wants to format only the second paragraph of the fifth page to have two
columns. What sequence of buttons will Eliza click to set up the correct type of section break for this?
O Page Layout, Breaks, Page
O Page Layout, Breaks, Continuous
Insert, Page Break
O Insert, Continuous
Numerical methods are implementations of mathematical algorithms, but constructed with special consideration for accuracy of solutions and computational run-time. The order in which we implement floating point arithmetic for any numerical method will effect the accuracy of the final computed value. For this reason, extra thought must be placed on our basic mathematical operations. In this problem, you are asked to add-up the values in a large array called data. How should you do this to achieve the most accurate final sum
Answer:
find detailed description of algorithms (direct and iterative methods) in books [8], [3], [24]. We limit ourself to only selected problems and methods which are important in chemical engineering. 1.2.1 Conditioning of a system of linear equations We do not compute accurately because of rounding errors, which affect results of calcu-lations.
Explanation:
The following code will not display the results expected by the programmer. Can you find the error? Declare Real lowest, highest, average Display "Enter the lowest score." Input lowest Display "Enter the highest score." Input highest Set average = low + high / 2 Display "The average is ", average, "."
Based on the information given, the first error in the code is that the Variable name is lowest, NOT low, and Set average = low + high / 2.
How to find the error in the code.For Error 2: Variable name is highest, NOT high and Set average = low + high / 2
For Error 3 : Set average = low + high / 2. Thus, you will need to add the lowest and highest, then perform the division by 2
Set average = (lowest + highest) / 2 is the the correct statement.
Learn more about codes on:
https://brainly.com/question/25875879
Write a program that uses an initializer list to store the following set of numbers in an array named nums. Then, print the array.
14 36 31 -2 11 -6
Sample Run
[14, 36, 31, -2, 11, -6]
V. Write a program in python for the following:
[10]
a) Jennifer wants to carpet her new room with pink carpet. Create a program that will ask the user for the two
dimensions of a room (length and width) and then calculate the area of the room, (length x width), before
finally displaying the answer
Answer:
length = input("length of room: ")
width = input("Width of room: ")
Area = float(length) * float(width)
print("Area of room is: ", Area)
pdf
B. Ayusin ang mga titik sa bawat bilang upang mabuo ang mga
tamang salita na bumubuo ng web browser at mga ilang
bahagi ng web browser. Isulat ang iyong sagot sa sagutang
papel.
1. terterin ploexrer
2. glegoo mechro
3. foxfire zillamo
4. bat mena
5. bat wen
Answer:
Question wants the misspelled words to be properly arranged to give the correct names in relation to web browsers.
terterin ploexrer ⇒ Int-ernet Ex-plorerglegoo mechro ⇒ Goo-gle Ch-romefoxfire zillamo ⇒ M-o-z-i-l-l-a Fire-foxbat mena ⇒ Tab name.bat wen ⇒ New TabQ1: Identify and correct the errors in each of the following pieces of code. [Note: There maybe more than one error in each piece of code. a) int x = 1, total; while (x <= 10) { total += x; ++x; } b) while (x <= 100) total += x; ++x; c) public class Mystery { public static void main(String[] args) { int x = 1; int total = 0; while (x <= 10) { int y = x * x; System.out.println(y); total += y; ++x; }// end of while System.out.printf("Total is %d%n", total); }//end of main }//end of class Mystery2 *********************** Q2 What does the following program print? public class Mystery3 { public static void main(String[] args) { int row = 10; while (row >= 1) { int column = 1; while (column <= 10) { System.out.print(row % 2 == 1 ? "<" : ">"); ++column; }// end of while column<=10 --row; System.out.println(); }//end of while }//end of main }// end of class Mystery3
Answer:
a. int x = 1, total = 0;
while (x <= 10){
total += x;
++x;
}
b. while (x <= 100){
total += x;
++x;
}
c. public class Mystery{
public static void main(String[] args){
int x = 1;
int total = 0;
while (x <= 10){
int y = x * x;
System.out.println(y);
total += y;
++x;
}
System.out.printf("Total is %d%n", total);
}
Explanation:
For the first code, the variable "total" was not initialized, so to avoid raising an error message, an integer value must be assigned to it before the increment. Code block two of the second while statement must be enclosed in curly braces, while the third code must be indented properly.
Our tests will run your program with input 2, then run again with input 5. Your program should work for any input, though.
Write code that outputs variable numDays. End with a newline
Answer:
In Python:
numDays = int(input("Days: "))
print("Number of days: "+str(numDays)+"\n")
Explanation:
The program was written in Python and the explanation is as follows;
First, get the input for the number of days from the user
numDays = int(input("Days: "))
Next, print string "Number of days: " followed by the number input from the user and then newline
print("Number of days: "+str(numDays)+"\n")
The character \n represents new line
Use the drop-down menus to complete statements about archiving and backing up data fileArchiving data files manages the size of a mailbox for storage.
Creating an Outlook data file
data files in storage on a computer.
Answer:
Archiving data files manages the size of a mailbox for
✔ local
storage.
Creating an Outlook data file
✔ protects
data files in storage on a computer.
Explanation:
Because its right.
Answer:
an increase in cloud computing
Explanation:
I need help also this counts as my second giveaway and last for today
Btw I give tons of points so you wanna answer Don't steal points
Answer: Visual Card
Explanation: Because it’s graphics, it means the visual of the game
JAVA 6.37 LAB: Even/odd values in an array Write a program that reads a list of integers, and outputs whether the list contains all even numbers, odd numbers, or neither. The input begins with an integer indicating the number of integers in the list. The first integer is not in the list. Assume that the list will always contain less than 20 integers. Ex: If the input is: 5 2 4 6 8 10 the output is: all even Ex: If the input is: 5 1 -3 5 -7 9 the output is: all odd Ex: If the input is: 5 1 2 3 4 5 the output is: not even or odd Your program must define and call the following two methods. isArrayEven() returns true if all integers in the array are even and false otherwise. isArrayOdd() returns true if all integers in the array are odd and false otherwise. public static boolean isArrayEven(int[] arrayValues, int arraySize) public static boolean isArrayOdd(int[] arrayValues, int arraySize)
Answer:
Explanation:
Hey,
I an sorry I do not know java only python
Thanks
The executive ________ is the person ultimately responsible to their company for the project's success.
fill in blank
Answer:
Manager.
Explanation:
Just thank me later and make sure to click the crown at the top of this answer ;)
Answer:
sponsor i took the test
Explanation:
Usually senior executives, executive sponsors, are the ones ultimately responsible to their company for the project's success.
IN WHICH COUNTRY DO THEY LET YOU PLAY MINECRAFT IN SCHOOL?
Answer:
Sweden or Wales maybe?
Explanation:
Hope this helps!
Answer:
America if you play in secret
Explanation:
Give
25
Input devices examples
The ‘rect()'block has two inputs that
control where it's drawn - the x and y position. If
you wanted these commands to draw different
sizes of rectangles, what additional inputs would
you need to give the blocks?
Answer is yes beacause
The w and h, which are the width and height respectively, are additional inputs that should be given to the block to draw rectangles of different sizes.
In the Drawing drawer of the Game Lab toolbox, the rect() command is used for drawing a rectangle. It takes in four inputs as arguments. These arguments are;
i. x - the x-coordinate of the point relative to the top-left corner of the display area where the shape will begin from. This is the first argument.
ii. y - the y-coordinate of the point relative to the top-left corner of the display area where the shape will begin from. This is the second argument.
iii. w - the width of the rectangle to be drawn. This is the third argument. It is measured in pixels.
iv. h - the height of the rectangle to be drawn. This is the fourth argument. It is measured in pixels.
For example, to draw a rectangle with a height of 50px, width of 60px and starting at point (x, y) = (40, 40), the command rect() will be called as follows;
rect(40, 40, 60, 50)
Take a look at another example: To draw a rectangle with a width of 120px, height of 60px and starting at point (x, y) = (30, 50), the command rect() will be called as follows;
rect(30, 50, 120, 60)
Therefore, the width and height inputs should be specified in order to draw different sizes of rectangles.
List two panels that allow you to adjust the properties of your titles.
Answer:
1. The tools panel
2. The actions panel
Explanation:
The tools panel contains properties that allow for text and object creation. The actions panel contains properties that allow for the alignment and distribution of titles.
Under the tools panel, we can find properties like; line, arc, an arrow for selection, different shapes like rectangle and the clipped corner, vertical type, vertical area type, vertical path type, etc. Under the actions panel, properties like; align, center, and distribute can be found.
What are the paparazzi?
O A. Professional artists hired by stars for portraits
B. Tabloids that expose celebrities acting rudely
O C. Fans who watch videos of stars doing silly things
O D. Photographers who follow stars to take pictures
Answer:
d.photographers who follow stars to take pictures
PLEASE HELP ITS CODING AND I INCLUDED A SCREENSHOT OF WHAT TO DO
def even_checker(lst):
for x in lst:
if x%2==0:
print(x)
l = [1,2,3,4,5,6,7,8,9,10]
even_checker(l)
I wrote my code in python 3.8. I hope this helps.
Select the correct answer.
A computer using a connectionless network protocol sends too many data packets to another computer, causing loss of a few packets. As a result, the message appears jumbled to the user at the destination computer. How does TCP overcome this issue?
A.
by using flow control
B.
by using cables
C.
by using terminals
D.
by using a larger IP address
Please only answer if you are 100% sure
Answer:
D by using a larger IP address correct
Explanation:
Correct answer I hope this helps you :)
The objective of this task is to use Scapy to estimate the distance, in terms of number of routers, between your VM and a selected destination. This is basically what is implemented by the traceroute tool. In this task, we will write our own tool. The idea is quite straightforward: just send an packet (any type) to the destination, with its Time-To-Live (TTL) field set to 1 first. This packet will be dropped by the first router, which will send us an ICMP error message, telling us that the time-to-live has exceeded. That is how we get the IP address of the first router. We then increase our TTL field to 2, send out another packet, and get the IP address of the second router. We will repeat this procedure until our packet finally reach the destination. It should be noted that this experiment only gets an estimated result, because in theory, not all these packets take the same route (but in practice, they may within a short period of time). The code in the following shows one round in the procedure. a = IP() a.dst = ’1.2.3.4’ a.ttl = 3 b = ICMP() send(a/b) If you are an experienced Python programmer, you can write your tool to perform the entire procedure automatically. If you are new to Python programming, you can do it by manually changing the TTL field in each round, and record the IP address based on your observation from Wireshark. Either way is acceptable, as long as you get the result.
Answer:
answer b
is correct
You want to read input from the user to know how many apples they would like
to buy. Which statement should you use to read in a number from the user?
var applesToBuy = readLine("How many apples would you lik
e? ");
o
var applesToBuy - println("How many apples would you like?
Dj
var applesToBuy - readInt("How many apples would you like?
1);
var applesToBuy
= nextInt("How many apples would you like?
")
Answer:
var applesToBuy = readLine("How many apples would you lik
e? ");
Explanation:
It asks the user to enter answer the question and it stores the answer into the applesToBuy variable.
Its right dont worry.
In the given scenario, if we use "InputStream" class object that inputs value from the user-end, in which we use "readInt" keyword. In Java, this function of the DataInputStream class reads 4 input bytes and returns an integer value. This method takes the next 4 bits from the input stream, transforms them to integers, and would then returns.
And the wrong choice can be defined as follows:
For choice 1, it use the "readLine" method which inputs the string value.For choice 2, it use the "println" method which prints value.For choice 4, the "nextInt" method is the part of "Scanner" class.Therefore, the answer is "Option 3", which is "var applesToBuy - readInt("How many apples would you like?");".
Learn more:
brainly.com/question/20637377
i need help with this
Answer:
Answer is D
Explanation:
cameras did not use disks until the late 1990s :D
edit: sorry my previous answer was wrong, I apoligize for the mishap :(
Which of the following guidelines about the subject line of e-mail messages is most appropriate?
1: Avoid using a subject line unless the e-mail is very important.
2: Use the subject line wisely to let your reader know the main purpose of the e-mail.
3: Try to keep the subject line very short, such as just one or two words.
4: Make sure you provide all the details in the subject line in case the receiver does not have time to read the whole e-mail.
Answer: 2: Use the subject line wisely to let your reader know the main purpose of the e-mail.
============================================================
Explanation:
The subject line is like the title of a book. You want to give a quick sense of what the email is about, but you also don't want to put the entire contents of the book in the title. The subject line only has so much room. Even less room is available if the reader is checking their email on their mobile device.
Choice 1 is false because subject lines are important. I can't think of a case where you can omit the subject line entirely (ie leave it blank), unless it's a situation where the recipient knows in advance what the topic is about. Though that may be rare.
Choice 3 is false. Yes you want to keep the subject line short, but you also don't want to be cryptic or confusing. If you can get away with using 1 or 2 words, then go ahead and do so. However, you may need more words to convey the topic of the email. Go with what feels right and try to put yourself in the shoes of the person reading your email. Ask yourself "Does this convey the message I want to send?"
Choice 4 is false. As mentioned, you do not want to put the entire email in the subject line. The exception of this rule is that if the email is really really short. For every other case, you should have a fairly short title and then go over the details in the email main body itself.
Answer:
Use the subject line wisely to let your reader know the main purpose of the e-mail.
Explanation:
i got it right on edge 2021
You are the systems administrator for a large trust company. Most of the Linux servers in the company host databases that are accessed frequently by company employees. One particular Linux server has been reported as being very slow today. Upon further investigation using the top utility, you have found a rogue process that is wasting a great deal of system resources. Unfortunately, the rogue process is a database maintenance program and should be killed with caution. Which kill signal would you send this process and why? If the rogue process traps this signal, which other kill signals would you try? Which command could you use as a last resort to kill the rogue process?
Answer:
soo long this one is ufff
An algorithm to print a set of 10 integers in ascending order
Answer:
Program - Array Sorting
Author - Vishal Solanki
Language - C Language
Date - 03/02/2018 (dd/mm/yyyy)
*/
//IDE used for this code is "Visual Studio 2017"
#include <stdio.h> //including stdio.h for printf and other functions
#include<conio.h>
int main() //default function for call
{
int a[100],n,i,j;
printf("Array size: ");
scanf("%d",&n);
printf("Elements: ");
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
for (int i = 0; i < n; i++) //Loop for ascending ordering
{
for (int j = 0; j < n; j++) //Loop for comparing other values
{
if (a[j] > a[i]) //Comparing other array elements
{
int tmp = a[i]; //Using temporary variable for storing last value
a[i] = a[j]; //replacing value
a[j] = tmp; //storing last value
}
}
}
printf("\n\nAscending : "); //Printing message
for (int i = 0; i < n; i++) //Loop for printing array data after sorting
{
printf(" %d ", a[i]);
}
for (int i = 0; i < n; i++) //Loop for descending ordering
{
for (int j = 0; j < n; j++) //Loop for comparing other values
{
if (a[j] < a[i]) //Comparing other array elements
{
int tmp = a[i]; //Using temporary variable for storing last value
a[i] = a[j]; //replacing value
a[j] = tmp; //storing last value
}
}
}
printf("\n\nDescending : "); //Printing message
for (int i = 0; i < n; i++) //Loop for printing array data after sorting
{
printf(" %d ", a[i]); //Printing data
}
return 0; //returning 0 status to system
getch();
}
//Ouput
/*
Array size: 10
Elements : 3 4 7 6 5 1 2 8 10 9
Ascending : 1 2 3 4 5 6 7 8 9 10
Descending : 10 9 8 7 6 5 4 3 2 1
*/
Explanation:
Why should you try out a camera bag before taking it on a vacation?
So you can make sure that your passport fits in it
So that you can make sure it is comfortable
So that you can get a different color
So that you can add more equipment
Answer:
b or c
Explanation: