Answer:
Configure a safe sender.
Explanation:
Spam is a computer term that designates unwanted messages in an email, as well as advertising messages on websites. The main characteristic of these messages is that they do not respond to any previous action on the part of the receiver, such as a conversation with the sender or an advertisement that arises from search engine algorithms, but is sent randomly by an anonymous sender with objectives that are not entirely clear or legitimate.
Therefore, if Walt wishes that his colleague's messages are not classified as spam, he must categorize this person as a safe sender within his email box.
SMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts over TCP. A TCP connection is set up between a user agent and a server program. The server listens on TCP port 25 for incoming connection requests. The user end of the connection is on a TCP port number above 1023. Suppose you wish to build a packet filter rule set allowing inbound and outbound SMTP traffic. You generate the following rule set:
Rule Direction Src Addr Dest Addr Protocol Dest Port Action
A In External Internal TCP 25 Permit
B Out Internal External TCP >1023 Permit
C Out Internal External TCP 25 Permit
D In External Internal TCP >1023 Permit
E Either Any Any Any Any Deny
Required:
Describe the effect of each rule.
Answer:
The five rules are described as follows:
Rule A permits the inbound Simple Mail Transfer Protocol (SMTP) connection.
Rule B permits the inbound Simple Mail Transfer Protocol (SMTP) connection.
Rule C permits the outbound Simple Mail Transfer Protocol (SMTP) connection.
Rule D permits the outbound Simple Mail Transfer Protocol (SMTP) connection.
Rule E does not perform any action. Thus it is when the action is denied.
Explanation:
Rule A allows information transfer of the incoming email from the external server to the internal remote server, thus this allows an inbound connection.
Rule B allows information transfer of the incoming email from the remote server to the external remote server, thus this allows an inbound connection.
Rule C allows information transfer of outgoing email from the external server to the internal remote server, thus this allows an outbound connection.
Rule D allows information transfer of the outgoing email from the remote server to the external remote server, thus this allows an outbound connection.
Rule E does not allow any action in either direction thus it is when action is denied.
8. Many organizations build their networks around this type of computer.
A) server
B) terminal
C) supercomputer
heir netwo
of multiple
or that stores data
A)dektop
it is B) terminal bc There are several different types of computer networks. Computer networks can be characterized by their size as well as their purpose
You are an IT network administrator at XYZ Limited. Your company has critical applications running of its Ubuntu Linux server. Canonical, the company that owns and maintains Ubuntu just releases an update to patch a security vulnerability in the system.
Required:
What BEST action you should take?
Answer:
Explanation:
I believe that the best course of action would be to divide the companies computers and run the critical applications on half of the systems while the other half update to the latest Ubuntu release. Once that half is done updating, you run the applications on the updated systems and update the other half of the systems. This will allow the company to continue its operations without any downtime, while also updating to the latest Ubuntu release on all systems and making sure that all systems do not have any security vulnerabilities due to outdated software.
a) Why is eavesdropping done in a network?
b) Solve the following using checksum and check the data at the
receiver:
01001101
00101000
Answer:
An eavesdropping attack is the theft of information from a smartphone or other device while the user is sending or receiving data over a network.
Missing: checksum 01001101 00101000
How are status reports useful
Answer:
Project managers use status reports to keep stakeholders informed of progress and monitor costs, risks, time and work. Project status reports allow project managers and stakeholders to visualize project data through charts and graphs.
The following code segment appears in a class other than Backyard. It is intended to print true if b1 and b2 have the same lengths and widths, and to print false otherwise. Assume that x, y, j, and k are properly declared and initialized variables of type int.
Backyard b1 = new Backyard(x, y);
Backyard b2 = new Backyard(j, k);
System.out.println( /* missing code */ );
Which of the following can be used as a replacement for /* missing code */ so the code segment works as intended?
a. b1 == b2
b. b1.equals(b2)
c. equals(b1, b2)
d. b1.equals(b2.getLength(), b2.getWidth())
e. b1.length == b2.length && b1.width == b2.width
Answer:
b. b1.equals(b2)
Explanation:
The question has a missing source file (which can be found online).
The function that compares b1 and b2 is:
public boolean equals(Object other) {
if (other == null) {
return false; }
Backyard b = (Backyard) object;
return (length == b.getLength() && width == b.getWidth());
}
Using the function definition, we have:
equals(Object other)
This implies that, the first object will be compared to the second, using the function name.
i,e,
b1.equals(b2)
Hence (b) is correct
In this exercise we have to use the knowledge in computational language in C++ to describe a code that best suits, so we have:
The code can be found in the attached image.
To make it simpler we can write this code as:
public boolean equals(Object other) {
if (other == null) {
return false; }
Backyard b = (Backyard) object;
return (length == b.getLength() && width == b.getWidth());
}
This program will result in the following missing variable:
b1.equals(b2)
See more about C++ at brainly.com/question/19705654
Economic Batch Quantity depends on
دی ماه
Material, labour
Set-up costs, carrying
Transportation, carrying
Warehousing, labour
Answer: Set-up costs, carrying costs
Explanation:
When it comes to production, the goal is to produce with as little costs as possible so that more profit can be made when the goods are sold.
This is why the Economic Batch Quantity is important. It shows the maximum amount of goods that can be produced in a particular production run such that costs will be minimized.
As such, it is based on the set-up costs of production for that run as well as the carrying costs through the run.
recent trends on operating system
Answer:
Windows 10 if this is what I think u mean
A new school is being built in the local school district. It will have three computer labs with 28 computers each. There will be 58 classrooms with 2 computers each that need to be on one sub-subnet. The office staff and administrators will need 7 computers. The guidance and attendance office will have 5 computers. The school has been given the address 223.145.75.0/24.
Complete the information required below.
Subnet Subnet Mask (/X) Subnet Address First Usable Host Last Usable Host Broadcast Address
1
2
3
4
5
6
7
8
9
10
Answer:
The table is formed as attached figure.
Explanation:
Subnets can use specific number of hosts so /25 can host 128 hosts, reducing by a factor of 2 leading to /30 as with only 4 hosts. Thus the subnets are alloted as indicated in the attached image.
The EDI ____________layer describes the business application that i
driving EDI
a)EDI Semantic Layer c) EDI Transport Layer
b) EDI Standard Translation Layer d) Physical Layer
Answer:
a) EDI Semantic Layer
Explanation:
EDI is an acronym for electronic data interchange and it can be defined as a form of communication between interconnected computer systems and software applications with respect to business informations in standard digital formats.
This ultimately implies that, electronic data interchange (EDI) involves the transfer of business informations such as financial transactions between the computer systems of various organizations such as banks, companies, governmental agencies, etc. Thus, it avails businesses the ability to create strategic communications using computer to computer links to effectively and efficiently exchange business informations electronically or in digital formats.
Hence, the EDI Semantic layer describes the business application that is driving electronic data interchange (EDI).
help meeeee pleaaaseee
Answer:
just drop out that the easiest solution
Your systems analysis team is close to completing a system for Azuka Theatre. Kevin is quite con- fident that the programs he has written for Azuka's inventory system used for keeping track of stage scenery and props will perform as required because they are similar to programs he has done before. Your team has been very busy and would ideally like to begin full systems testing as soon as possible. Mark and Allison, two of your junior team members have proposed the following:
a. Skip desk checking of the programs (because similar programs were checked in other installa- tions; Kevin has agreed).
b. Do link testing with large amounts of data to prove that the system will work.
c. Do full systems testing with large amounts of live data to show that the system is working. Respond to each of the three steps in their proposed test schedule. Use a paragraph to explain your response.
Answer:
a
Explanation:
im smart
Desk checking is a method to check the logic of an algorithm by manually working through it. There are many reasons for Desk Checking that may be omitted or simplified.
What are the reasons for desk checking?If the current program’s logic is identical, then this step may be omitted; this, however, implies some effort to verify “sameness.” If truly identical, perhaps there is re-usable code, or the code to be developed should become a reusable library routine.
Link testing is the testing of the group of modules in order to ensure that the modules operate correctly in combination. It generally verifies that the function or operation is executed properly. System testing is a type of testing that is used to confirm the actual function of the system in which a work is executed or performed.
Therefore, all of the testing mechanisms are well described above.
To learn more about System and link testings, refer to the link:
https://brainly.com/question/7658665
#SPJ2
One way to add a table to a presentation is to click on Clip Art under the Insert tab. click on WordArt under the Insert tab. right-click on an existing page with content and choose Add Table. add a new slide and left-click on the Table symbol in an empty area.
True or false question :)
Handware can be tracked back to ancient times. Over six centuries ago.
°true
°false
Answer:
false and it's a recent technology
Which statement best describes Link State routing? Group of answer choices Each router builds a cost-weighted graph of the network of all the routers and the shortest links between them, based on information received from each router regarding only its nearest neighbors All of these Each router uses a HELLO packet to announce its presence to its neighbors Each router builds a table with the best distance between each router and the link to use, based on each router’s providing data on distances to all the routers in its routing table to its nearest neighbors
Answer:
Each router builds a cost-weighted graph of the network of all the routers and the shortest links between them, based on information received from each router regarding only its nearest neighbors.
Explanation:
A routing protocol can be defined as a set of defined rules or algorithms used by routers to determine the communication paths unto which data should be exchanged between the source router and destination or host device.
Additionally, in order for packets to be sent to a remote destination, these three parameters must be configured on a host.
I. Default gateway
II. IP address
III. Subnet mask
After a router successfully determines the destination network, the router checks the routing table for the resulting destination network number. If a match is found, the interface associated with the network number receives the packets. Else, the default gateway configured is used. Also, If there is no default gateway, the packet is dropped.
Basically, there are two (2) main categories of routing protocols used in packet switching networks and these includes;
1. Distance-vector routing.
2. Link state routing.
Link state routing refers to a complex routing technique in which each router learns about it's own neighborhood or directly connected networks (links) and shares the information with every other router present in the network.
Hence, the statement which best describes Link State routing is that, each router builds a cost-weighted graph of the network of all the routers and the shortest links between them, based on information received from each router regarding only its nearest neighbors. Some examples are intermediate system to intermediate system (IS-IS) and open shortest path first (OSPF).
layers allow you to work with one element of an image without disturbing the others true or false
I think it is True not sure but try it
Write a Perl program that uses a hash and a large number of operations on the hash. For example, the hash could store people’s names and their ages. A random- number generator could be used to create three- character names and ages, which could be added to the hash. When a duplicate name was generated, it would cause an access to the hash but not add a new element. Rewrite the same program without using hashes. Compare the execution efficiency of the two. Compare the ease of programming and readability of the two.
Answer:
The Perl code is attached in the attachment. The execution time for using hashes is 0 seconds while that for without hash is 27 seconds.
Explanation:
In terms of ease of access and readability, both approaches are similar. However, it is evident from the time of execution that the with hashes is more efficient than the value of without hashes. This indicates that using hashes is more efficient.
Research and build a chroot jail that isolates ssh users who belong to the restrictssh group. (You will also need to create the restrictssh group). Next, install an ftp server and configure it to allow anonymous logins. Create a second chroot jail that can be accessed by the anonymous account. You will probably need to create several new user accounts to facilitate testing your setups.
Answer:
Explanation:
#!/bin/bash
# This script can be used to create simple chroot environment
# Written by LinuxConfig.org
# (c) 2020 LinuxConfig under GNU GPL v3.0+
#!/bin/bash
CHROOT='/var/chroot'
mkdir $CHROOT
for i in $( ldd $* | grep -v dynamic | cut -d " " -f 3 | sed 's/://' | sort | uniq )
do
cp --parents $i $CHROOT
done
# ARCH amd64
if [ -f /lib64/ld-linux-x86-64.so.2 ]; then
cp --parents /lib64/ld-linux-x86-64.so.2 /$CHROOT
fi
# ARCH i386
if [ -f /lib/ld-linux.so.2 ]; then
cp --parents /lib/ld-linux.so.2 /$CHROOT
fi
echo "Chroot jail is ready. To access it execute: chroot $CHROOT"
list the main industries in Sierra Leone
Answer:
The main industries in Sierra Leone are: Diamond mining
Petroleum refining
Small - scale manufacturing (beverage, textiles,footwear)
Explanation:
They also engage in commercial ship repair
Given that
f(x) = 5x +3.
Find f (4)
Answer:
Given that
f(x) = 5x +3.
f (4)=5×4+3=23
Explanation:
hope it's helps you have a good day☺
Which keyboard shortcut do we use to turn on APC?
Answer:
ctrl p I gusse hop it helps
bye know have a great day
Explanation:
Which tab should you click if you want to access the Show All Comments option in a worksheet?
Home
Page Layout
Review
View
Answer: Review
Because you want to review the comments
Answer:
C.) Reivew
Explanation:
Doing it on EDG now!
Best luck to yall :3
Have a good day and byee
There used to be a popular type of pulp book for younger readers. They were called "Choose Your Own Adventure" novels. The idea was pretty simple. You'd start reading and then a few pages into the book, there would be a plot development that required a choice. The book might describe that you've entered a spooky house and the door has locked behind you. It would then ask you if you want to try to exit by going through the kitchen or exploring upstairs. If you chose to go into the kitchen, you'd turn to page 200, if you chose to go upstairs, you'd turn to page 43. This would repeat maybe five or six times though the book. You could re-read it a few times and try different outcomes.
In this lab you are going to create a choose your own adventure application using navigation controllers. The introduction screen to your application will contain a few lines of text to set up a story and then leave the user with a choice. Below the text, you will present two buttons that correspond to the different choices.
For example, you might see the following text on the main screen:
You are walking down the street when a tiger runs up and takes your lunch and then runs away...
Do you want to chase the tiger or run away?
Chase
Run Away
The user must then tap one of the buttons. This will move the user to a new screen with a few more lines of the story and another choice and two more buttons. You will create three (3) turning points in your story. This means that your story will have eight (8) different possible outcomes and a total of 15 screens.
Requirements
The story must ask three (3) questions, no matter how the user answers the previous question. All the questions must be different and result in a different story text.
The story must have eight (8) possible different final outcomes.
The story must include a minimum of 15 screens in total.
Create content that is appropriate and not-offensive. We will share these and play them together.
For extra credit you can add an extra screen and use inputs to capture data from the user such as a name, favorite food, or lucky number and use this data in the story.
Answer:
click on the link
Explanation:
link is somewhere hidden
Design a Python3 function to compare every prefix of a string X to every element of string Y, if there is a match, place it in a python set, sort and reversely sort the set, and return the sorted and reversely sorted sets.
Answer:
The function is as follows:
def compare_prefix(strX,strY):
prefix=set()
for i in range(len(strX)):
for j in range(i+1,len(strX)):
chk =strX[i:j+1]
if chk in strY:
prefix.add(chk)
sort_prefix = sorted(prefix)
rev_sort_prefix = sorted(prefix,reverse=True)
return(sort_prefix,rev_sort_prefix)
Explanation:
This defines the function
def compare_prefix(strX,strY):
This creates an empty set, prefix
prefix=set()
This iterates through each character in strX
for i in range(len(strX)):
This iterates through every other character in strX
for j in range(i+1,len(strX)):
This gets the prefix of strX by concatenating strings from i to j + 1
chk =strX[i:j+1]
This checks if the prefix is in strY
if chk in strY:
If yes, the string is added to set prefix
prefix.add(chk)
This sorts prefix
sort_prefix = sorted(prefix)
This reverses the sorted prefix
rev_sort_prefix = sorted(prefix,reverse=True)
This returns the sorted and reversed prefix
return(sort_prefix,rev_sort_prefix)
You want a cable that could be used as a bus segment for your office network. The cable should also be able to support up to 100 devices. Which cable should you use?
A.
RG-6
B.
RG-8
C.
RG-58U
D.
RG-59
Answer: C
Explanation:
What is the hamming distance between the following bits? Sent
bits: 101100111, Received bits: 100111001
Select one: 5. Or 3 or 6 or4
I think
the hamming distance between the following bits its 5
How to make a project using PID and thermacouple
Explanation:
Required tools and components:
Soldering iron
Solder
Flux pen
Fine gauge solder (23 gauge or finer)
Wire cutter
MAX31855 thermocouple interface chip (available directly from Maxim Integrated)
Thermocouple with junction suitable for your application (e.g., probe, washer, etc.)
J-type (-40°C to +750°C)
K-type (-200°C to +1350°C)
T-type (-200°C to +350°C) Solid state relay (will depend on your application)
USB FTDI 5V cable (Note: A single cable can be used for many different microcontroller projects)
Computer with Arduino IDE v1.0
Wall-wart 9V/1.5A, 2.1mm center positive
A line beginning with a # will be transmitted to the programmer’s social media feed.
A.
True
B.
False
Answer:
True?
Explanation:
Answer:
The answer is false.
Explanation:
A “#” doesn’t do that in Python.
A new school is being built in the local school district.It will have three computer labs with 28 computers each. There will be 58 classrooms with 2 computers each that need to be on one sub-subnet.The office staff and administrators will need 7 computers. The guidance and attendance office will have 5 computers. The school has been given the address 223.145.75.0/24. Subnets are assigned from largest to smallest. Everything is based on the number of usable hosts.
Complete the information required below.
Subnet Subnet Mask (/X) Subnet First Usable Last Usable Broadcast
Address Host Host Address
1
2
3
4
5
6
7
Answer:
Following are the responses to the given question:
Explanation:
The subnet mask /25 could be the host 128 hosts.
The subnet mask /26 could be the host 64 hosts.
The subnet mask /27 could be the host 32hosts.
The subnet mask /28 could be the host 16 hosts.
The subnet mask /29 could be the host 8 hosts.
The subnet mask /30 could be the host 4 hosts.
It is based on the requirement in which I have been using /25,/27,/28,/29 subnet masks on the basis of the usable slots.
Create a class named TriviaGameV1 that plays a simple trivia game. The game should have five questions. Each question has a corresponding answer and point value between 1 and 3 based on the difficulty of the question. TriviaGameV1 will use three arrays. An array of type String should be used for the questions. Another array of type String should be used to store the answers. An array of type int should be used for the point values. All three arrays should be declared to be of size 5. The index into the three arrays can be used to tie the question, answer, and point value together. For example, the item at index 0 for each array would correspond to question 1, answer 1, and the point value for question 1. Manually hardcode the five questions, answers, and point values in the constructor of TriviaGameV1. The five questions and their corresponding answers are shown on page 3. The point values should be set to 1, 2, 2, 3, 1, respectively.
The class should also provide the following two public methods:
• public boolean askNextQuestion() - This method takes no argument and returns a boolean. If there are no more questions to ask, it returns false. Otherwise, it asks the next question and gets an answer from the user. If the player’s answer matches the actual answer (case insensitive comparison), the player wins the number of points for that question. If the player’s answer is incorrect, the player wins no points for the question and the method will show the correct answer. It returns true after Q & A have been processed.
• public void showScore() - This method takes no argument and returns void. It displays the current score the player receives thus far.
The test driver is provided below, which creates a TriviaGameV1 object. After the player has answered all five questions, the game is over.
public class TriviaGameV1Test {
public static void main(String[] args) { TriviaGameV1 game = new TriviaGameV1();
while (game.askNextQuestion()) game.showScore(); System.out.println("Game over! Thanks for playing!"); }
}
Answer:
Explanation:
The following code is written in Java, It creates the class for the Trivia game along with the arrays, variables, and methods as requested so that it works flawlessly with the provided main method/test driver. The attached picture shows the output of the code.
import java.util.Arrays;
import java.util.Scanner;
class TriviaGameV1 {
String[] questions = {"The first Pokemon that Ash receives from Professor Oak is?", "Erling Kagge skiied into here alone on January 7, 1993", "1997 British band that produced 'Tub Thumper'", "Who is the tallest person on record (8 ft. 11 in) that has lived?", "PT Barnum said \"This way to the _______\" to attract people to the exit."};
String[] answers = {"pikachu", "south pole", "chumbawumba", "robert wadlow", "egress"};
int[] points = { 1, 2, 2, 3, 1};
int score;
int count = 0;
public void TriviaGameV1() {
this.score = 0;
}
public boolean askNextQuestion() {
if (count != 5) {
Scanner in = new Scanner(System.in);
System.out.println(questions[count]);
String answer = in.nextLine().toLowerCase();
if (answer.equals(answers[count])) {
score += points[count];
} else {
System.out.println("Wrong, the correct answer is : " + answers[count]);
}
count += 1;
return true;
}
return false;
}
public void showScore() {
System.out.println("Your Score is: " + this.score);
}
public static void main(String[] args) {
TriviaGameV1 game = new TriviaGameV1();
while (game.askNextQuestion()) {
game.showScore();
}
System.out.println("Game over! Thanks for playing!");
}
}