Compare GBN (go back N), SR (Selective Repeat), and TCP (no delayed ACK).
Assume that the timeout values for all three protocols are sufficiently long such that 6 consecutive data segments and their corresponding ACKs can be received (if not lost in the channel) by the receiving host (Host B) and the sending host (Host A) respectively.
Suppose Host A sends 6 data segments to Host B numbered 1,2,3,4,5, and 6, and the 3nd segment (sent from A) is lost. In the end, all 6 data segments have been correctly received by Host B.
1) How many segments has Host A sent in total and how many ACKs has Host B sent in total? What are their sequence numbers? Answer this question for all three protocols.
Draw the flow diagram showing this scenario for each protocol.
Rq: the length of data is 1.
Answers
Answer:
hope it is right
Explanation:
here is it
Related Questions
Use Mathematica
Given the two vectors u = <6, -2, 1> and v = <1, 8, -4> a) Find u * v, and find u*v
b) Find angle between vectors u and v.
c) Graph both u and v on the same system.
d) Now, graph vectors u, v and on the same set of axes and give u * v a different color than vectors u and v.
e) Rotate graph from part d and show two different views of the cross product.
f) Find the normal vector to vector u.
Answers
a) To find the dot product of the vectors u and v, we can use the Dot function in Mathematica. The dot product is calculated as follows:
u.v = Dot[u, v]
b) To find the angle between vectors u and v, we can use the ArcCos function in Mathematica. The angle is calculated as follows:
angle = ArcCos[(u.v)/(Norm[u]*Norm[v])]
c) We can graph both vectors u and v on the same system using the ListVectorPlot3D function in Mathematica. This will display the vectors in a 3D coordinate system.
ListVectorPlot3D[{u, v}]
d) To graph vectors u, v, and u * v on the same set of axes with different colors, we can use the Graphics3D function in Mathematica. We can assign a different color to u * v using the Directive function.
Graphics3D[{Arrow[{{0, 0, 0}, u}], Arrow[{{0, 0, 0}, v}],
Directive[Red], Arrow[{{0, 0, 0}, u*v}]}]
e) To rotate the graph from part d and show two different views of the cross product, we can use the ViewPoint option in the Graphics3D function. By specifying different viewpoints, we can obtain different perspectives of the graph.
Graphics3D[{Arrow[{{0, 0, 0}, u}], Arrow[{{0, 0, 0}, v}],
Directive[Red], Arrow[{{0, 0, 0}, u*v}]},
ViewPoint -> {1, -1, 1}]
Graphics3D[{Arrow[{{0, 0, 0}, u}], Arrow[{{0, 0, 0}, v}],
Directive[Red], Arrow[{{0, 0, 0}, u*v}]},
ViewPoint -> {1, 1, 1}]
f) To find the normal vector to vector u, we can use the Cross function in Mathematica. The normal vector is calculated as follows:
normal = Cross[u]
The function Cross[u] computes the cross product of u with the standard basis vectors. The resulting vector represents the direction perpendicular to the plane spanned by u.
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Which HTML tag is used to add an ordered list to a web page?
Answers
Answer:
<ol> Defines an ordered list
Answer:
<ol>
Explanation:
Una persona decide comprar un número determinado de quintales de azúcar, ayúdele a presentar el precio de venta al público por libra, considerando un 25% de utilidad por cada quintal.
Answers
Please help us
The main difference between a device and a system is that, when a system malfunctions, the effects are spread out. True or False?
Answers
The main difference between a device and a system is that, when a system malfunctions, the effects are spread out. Thus, the given statement is true.
What is refrigerator?The refrigerator is a major evolution in food distribution, because it has allowed food to be preserved and free from the action of microorganisms for a long time.
Refrigerants showed an environmental problem when not working properly, because in cases of malfunctioning, the gases used in cooling could leak and cause damage to the ozone layer.
Therefore, The main difference between a device and a system is that, when a system malfunctions, the effects are spread out. Thus, the given statement is true.
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Write an application that uses String method region-Matches to compare two stringsinput by the user. The application should input the number of characters to be compared andthe starting index of the comparison. The application should state whether the comparedcharacters are equal. Ignore the case of the characters when performing the comparison.
Answers
Answer:
Explanation:
The following program creates a function called region_Matches that takes in two strings as arguments as well as an int for starting point and an int for amount of characters to compare. Then it compares those characters in each of the words. If they match (ignoring case) then the function outputs True, else it ouputs False. The test cases compare the words "moving" and "loving", the first test case compares the words starting at point 0 which outputs false because m and l are different. Test case 2 ouputs True since it starts at point 1 which is o and o.
class Brainly {
public static void main(String[] args) {
String word1 = "moving";
String word2 = "loving";
boolean result = region_Matches(word1, word2, 0, 4);
boolean result2 = region_Matches(word1, word2, 1, 4);
System.out.println(result);
System.out.println(result2);
}
public static boolean region_Matches(String word1, String word2, int start, int numberOfChars) {
boolean same = true;
for (int x = 0; x < numberOfChars; x++) {
if (Character.toLowerCase(word1.charAt(start + x)) == Character.toLowerCase(word2.charAt(start + x))) {
continue;
} else {
same = false;
break;
}
}
return same;
}
}
Assume the data link protocol used by NDAS has the following associated characteristics:
An 8-bit ASCII code is used. Each frame has a size (length) of 11936 bits. A half-duplex circuit with a speed of 1 million bits per second is used for transmission. There is a 30-millisecond turnaround time on the half-duplex circuit. Each frame contains 20 overhead (non-user-data) bytes. Assume that the probability of a frame requiring retransmission due to error in transmission is 1 percent. A millisecond is one-thousandth of a second. Also, 8 bits = 1 character = 1byte
Fill in the blanks
K= _________ bits per bytes
M=_________ bytes
C= _________ overhead bytes
Answers
Answer:
The transmission speed = 0.278 MB/s
Explanation:
K = 8 bits
M = 11936/8 bits = 1492 bits
transmission rate R = 1000000/ 8 = 125000 bps
overhead bytes C = 20
probability = 0.01
time T = 30 ms = 30 x10^-3 s
The data transmission speed formula = K(M-C)(1-p) / (M/R) + T
= 8( 1492 - 20)(0.99)/ (1492/125000) + 30 x10^-3
= 0.278 MB/s
Which type of ethical communication would be most useful when trying to understand negative nonverbal cues?
A. Sharing facts
B. Respect for diversity
C Accurate information
D. Integrity
Answers
Nonverbal cues are an important aspect of communication, and negative nonverbal cues such as frowning, crossed arms, or avoiding eye contact can indicate that the person is not comfortable or is unhappy. To understand these negative nonverbal cues, it is important to approach the situation with respect for diversity. This means acknowledging and respecting differences in culture, background, and experiences that may impact nonverbal communication. By doing so, individuals can avoid making assumptions and stereotyping based on nonverbal cues and instead, seek to understand the person's perspective and feelings.
Which of the following scenarios describes an advantage of a global economy?
A car company makes its products in a country known for high manufacturing requirements.
A lightbulb company expands to a country where potential workers all have the same educational background.
An electronics company manufactures products in a country where the materials cost is high.
A toothpaste company expands to another country where there is a lot of competition for jobs.
Answers
When the toothpaste company diversifies to the other country so this represents the advantage of the global economy.
The information related to the global economy is as follows:
It is the inter-linked worldwide activities that could be taken place between the different types of countries. It is related to economic activities.Therefore, the other options are incorrect.
Thus we can conclude that when the toothpaste company diversifies to the other country so this represents the advantage of the global economy.
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6. Write a C++ program to print the largest three elements in an array.
Answers
Answer:
if (arr[i] > max) -> max3 = max2, max2 = max , max = arr[i]. else if (arr[i] > max2) -> max3 = max2, max2 = arr[i]. else if (arr[i] > max3) -> max3 = arr[i]. At the end of the loop, we will print all three values.
Write a sentinel-controlled while loop that accumulates a set of integer test scores input by the user until negative 99 is entered.
Answers
Answer:
Here is the sentinel-controlled while loop:
#include <iostream> //to use input output functions
using namespace std; // to identify objects like cin cout
int main(){ // start of main() function body
int test_score; // declare an integer variable for test scores
//prompts user to enter test scores and type-99 to stop entering scores
cout << "Enter the test scores (enter -99 to stop): ";
cin >> test_score; // reads test scores from user
while (test_score != -99){ // while loop keeps executing until user enters -99
cin >> test_score; } } // keeps taking and reading test scores from user
Explanation:
while loop in the above chunk of code keeps taking input scores from user until -99 is entered. Sentinel-controlled loops keep repeating until a sentinel value is entered. This sentinel value indicates the end of the data entry such as here the sentinel value is -99 which stops the while loop from iterating and taking the test score input from user.
The complete question is that the code should then report how many scores were entered and the average of these scores. Do not count the end sentinel -99 as a score.
So the program that takes input scores and computes the number of scores entered and average of these scores is given below.
#include <iostream> // to use input output functions
using namespace std; // to identify objects like cin cout
int main(){ //start of main function body
double sum = 0.0; // declares sum variable to hold the sum of test scores
int test_score,count =0;
/* declares test_scores variable to hold the test scores entered by user and count variable to count how many test scores input by user */
cout << "Enter the test scores (or -99 to stop: ";
//prompts user to enter test scores and type-99 to stop entering scores
cin >> test_score; // reads test scores from user
while (test_score != -99){ // while loop keeps executing until user enters -99
count++; /* increments count variable each time a test cores is input by user to count the number of times user entered test scores */
sum = sum + test_score; // adds the test scores
cin >> test_score;} // reads test scores from user
if (count == 0) // if user enters no test score displays the following message
cout << "No score entered by the user" << endl;
else //if user enters test scores
//displays the numbers of times test scores are entered by user
cout<<"The number of test scores entered: "<<count;
/* displays average of test scores by dividing the sum of input test scores with the total number of input test scores */
cout << "\n The average of " << count << " test scores: " <<sum / count << endl;}
The program along with its output is attached.
The process of generating an image from a 2D or 3D model using computer programs is called ........
Answers
Answer:
endering or image synthesis is the process of generating a photorealistic or non-photorealistic image from a 2D or 3D model by means of a computer program. ... The term "rendering" is analogous to the concept of an artist's impression of a scene.
Make sure your animal_list.py program prints the following things, in this order:
The list of animals 1.0
The number of animals in the list 1.0
The number of dogs in the list 1.0
The list reversed 1.0
The list sorted alphabetically 1.0
The list of animals with “bear” added to the end 1.0
The list of animals with “lion” added at the beginning 1.0
The list of animals after “elephant” is removed 1.0
The bear being removed, and the list of animals with "bear" removed 1.0
The lion being removed, and the list of animals with "lion" removed
Need the code promise brainliest plus 100 points
Answers
Answer:#Animal List animals = ["monkey","dog","cat","elephant","armadillo"]print("These are the animals in the:\n",animals)print("The number of animals in the list:\n", len(animals))print("The number of dogs in the list:\n",animals.count("dog"))animals.reverse()print("The list reversed:\n",animals)animals.sort()print("Here's the list sorted alphabetically:\n",animals)animals.append("bear")print("The new list of animals:\n",animals)
Explanation:
Rather than entering an IP address into our browser, we use a text-based address known as a(n
Answers
Answer:
url
Explanation:
The int function can convert floating-point values to integers, and it performs rounding up/down as needed.
Answers
Answer:
False
Explanation:
The int() function is a built-in function found in Python3. This function can be used on floating-point values as well as strings with numerical values, etc. Once used it will convert the floating-point value into an integer whole value. However, it will always round the value down to the nearest whole number. This means that both 3.2 and 3.7 will return 3 when using the int function.
The int() does not perform rounding up/down of a float. It only print the
integer.
The int() function in python converts any specified number into an integer. It
does not round the decimal up or down.
For example
x = 20.90
y = int(x)
print(y)
Normally the float number of x (20.90) is suppose to be rounded up to 21 but
python int() function only takes the whole number i.e. the integer number
The program above will print an integer of 20. There is no rounding up or
down for python int() function.
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Breif out the life cycle of software quality assurance in 8 lines
Answers
Write some keywords about touchscreen
Answers
\({\huge{\underline{\bold{\mathbb{\blue{ANSWER}}}}}}\)
______________________________________
\({\hookrightarrow{Keywords}}\)
touchscreentouch inputmulti-touchgesturesstylusresistivecapacitivehaptic feedbacktouch latencytouch accuracytouch sensitivitytouch screen technologytouch screen interfacetouch screen displaytouch screen monitortouch screen laptoptouch screen phoneThis type of hosting model provides space, utilities, but you must provide your own server equipment.
Answers
Colocation hosting is a type of hosting model provides space, utilities, but you must provide your own server equipment.
What does the term colocation hosting mean?Colocation, often known as colocation hosting, is the practice of renting out equipment, servers, space, and bandwidth to companies in a highly secure data center facility. Companies can rent space in colocation facilities, which provide stronger security and uptime guarantees, to host their servers.
An actual building known as a colocation data center provides space with the right power, cooling, and security to house servers and computing technology for enterprises. Anything from cabinets to cages to private apartments are included in this capacity.
Therefore, A data center that provides colocation hosting is a type of service that involves renting out space and housing servers. The servers are owned by the clients, who also assert complete control over the hardware and software.
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Write a program that inputs numbers and keeps a running sum. When the sum is greater than 200, output the sum as well as the count of how many numbers were entered.
Sample Run
Enter a number: 50
Enter a number: 11
Enter a number: 66
Enter a number: 23
Enter a number: 53
Sum: 203
Numbers Entered: 5
Hint: If you get an EOF error while running the code you've written, this error likely means you're asking for too many inputs from the user.
Answers
Using the knowledge in computational language in python it is possible to write a code that inputs numbers and keeps a running sum.
Writting the code:totalsum=0
count=0
while(totalsum<=200):
num=int(input("Enter a number: "))
totalsum=totalsum+num
count=count+1
print("Sum:",totalsum)
print("Numbers Entered:",count)
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(a) Explain what the following Java components are used for.JListJFrameFLowLayoutJpanelJFrameEventListener(b) Write simple Java codes to illustrate how each one of the above components are implemented.
Answers
Answer:
Welcome to Gboard clipboard, any text you copy will be saved here.
Which of the following is the best example of a purpose of e-mail?
rapidly create and track project schedules of employees in different locations
easily provide printed documents to multiple people in one location
quickly share information with multiple recipients in several locations
O privately communicate with select participants at a single, common location
Answers
Answer:
The best example of a purpose of email among the options provided is: quickly share information with multiple recipients in several locations.
While each option serves a specific purpose, the ability to quickly share information with multiple recipients in different locations is one of the primary and most commonly used functions of email. Email allows for efficient communication, ensuring that information can be disseminated to multiple individuals simultaneously, regardless of their physical location. It eliminates the need for physical copies or face-to-face interactions, making it an effective tool for communication across distances.
Explanation:
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.
Answers
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
What is the correct order for writing the 3 dimensions for a 3D object? Here are the 3 dimensions:
Width
Height
Length
They need to be written in this format: ___________X___________X___________
Fill in the blanks.
for my sibling.
Answers
Answer:
Length x Width x Hight
Explanation:
A client has the right to receive ethically conducted research. Discuss this statement with examples.
Answers
A client has the right to receive ethically conducted research. This means that the researcher should adhere to the principles of scientific research, which includes honesty, objectivity, integrity, and respect for human subjects. In addition, the researcher should ensure that the research is conducted in a safe and responsible manner.
What is research?
Research is defined as "creative and methodical activity done to improve the body of knowledge." It entails the objective gathering, organising, and analysis of data in order to improve comprehension of a subject or issue. A research effort could build on prior contributions to the field. Research may duplicate portions of earlier projects or the project as a complete to verify the accuracy of instruments, processes, or experiments.
Documentation, discovery, interpretation, as well as the research and development (R&D) of methods & systems again for advancement of human knowledge are the main goals of basic research (as opposed to applied research). Research methodologies are based on epistemologies, which differ greatly within and between the humanities and sciences.
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Given the tables PRODUCT (ProductID. Description. Cost) SUPPLIER (Supplier D. ContactName, Phone Number) as shown in the figure below, which of the following would represent the correct placement of foreign keys? PRODUCT SUPPLIER ProductD Supplier Description Contact Name Cost Phone Number PRODUCT (ProductiD. Description. Cost) SUPPLIER (Supplier D. ContactName PhoneNumber, Productio) PRODUCT (ProductID. Description, Cost ContactName) SUPPLIER (Supplier D. ContactName, PhoneNumber) PRODUCT (ProductID. Description. Cost) SUPPLIER (Supplier D. ContactName, PhoneNumber) PRODUCT (Product Description, CostSupplier) SUPPLIER (Supplieri. ContactName, Phone Number, ProductID) PRODUCT (ProductID. Description Cost Supplieri) SUPPLIER (Supplierib. ContactName, PhoneNumber)
Answers
CREATE PROCEDURE sp_Q1
"at"country1 NVARCHAR(15),
"at"country2 NVARCHAR(15)
SELECT SupplierID, CompanyName, Phone, Country FROM suppliers where Country in ("at"country1,"at"country2)
SELECT ProductID, ProductName, UnitPrice, SupplierID FROM Product
where SupplierID in(
SELECT SupplierID FROM suppliers
where Country in ("at"country1,"at"country2)) ORDER BY SupplierID
What is product supplier?PRODUCT SUPPLIER ProductD Supplier Description Contact Name Cost Phone Number PRODUCT (ProductiD. Description. Cost) SUPPLIER (Supplier D. ContactName PhoneNumber, Productio) PRODUCT (ProductID. Description, Cost ContactName) SUPPLIER (Supplier D. ContactName, PhoneNumber)
PRODUCT (ProductID. Description. Cost) SUPPLIER (Supplier D. ContactName, PhoneNumber) PRODUCT (Product Description, CostSupplier) SUPPLIER (Supplieri. ContactName, Phone Number, ProductID) PRODUCT (ProductID. Description Cost Supplieri) SUPPLIER (Supplierib. ContactName, PhoneNumber)
Therefore, SELECT ProductID, ProductName, UnitPrice, SupplierID FROM Product
where SupplierID in(
SELECT SupplierID FROM suppliers
where Country in ("at"country1,"at"country2)) ORDER BY SupplierID
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g) Describe four features you expect to find on tablets and smartphones.
Answers
Four common features found on tablets and smartphones are:
Touchscreen Interface: Both tablets and smartphones typically have touchscreen displays that allow users to interact with the device by tapping, swiping, or pinching on the screen. Touchscreens enable intuitive navigation and control of applications, menus, and content.Wireless Connectivity: Tablets and smartphones are equipped with wireless connectivity options such as Wi-Fi and Bluetooth. Wi-Fi allows for internet access and data transfer over wireless networks, while Bluetooth enables wireless communication with other compatible devices, such as headphones, speakers, or smartwatches.Cameras: Most tablets and smartphones are equipped with built-in cameras, both front-facing and rear-facing. Cameras enable users to capture photos and videos, make video calls, and scan QR codes or barcodes. The quality and capabilities of the cameras may vary depending on the device's specifications.Mobile Applications (Apps): Tablets and smartphones support the installation and use of mobile applications, commonly referred to as apps. These apps provide a wide range of functionality, including productivity tools, social media platforms, entertainment content, gaming, navigation.It's important to note that the features mentioned above are not exhaustive, and tablets and smartphones may include many additional features such as biometric authentication.
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View filters are applied in what order?
Answers
Explanation:
in the formal order of filter .
.
.
thanks
View filters are applied to data in the order in which they were introduced by default. If a view already has filters, your new filter will be applied after them.
Write Java statements to declare another array and initialize it with the names
of the months of the year
Answers
Answer:
String[] months = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
Explanation: This code declares a String array named months and initializes it with the names of the twelve months of a year using curly braces {} and separating the values with commas. Each month name is enclosed in double quotes to indicate it is a string literal. Once this code is executed, the months array will contain the names of the months in order from January to December, and you can access each month by its index in the array, starting with months[0] for January and ending with months[11] for December.
Choose the correct term to complete the sentence
The ____ function removes the element with an index of zero.
1)popleft
2)leftremove
3)leftpop
Answers
Answer:
popleft
Explanation:
Answer: pop left
Explanation: got it right on edgen
n the context of automation, what is a robot?
Answers
Answer:
Explanation:
A non human
which statements describes the size of an atom
Answers
answer:
A statement that I always think about to understand the size of an atom. If you squish a person down to the size of an atom. It will make a black hole. and if you squish the whole Earth. down to the size of a jelly bean it will also make a black hole. This is just a approximation.
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I use the scale to understand how small that is I am open to hear more principles if you were talking about math wise that would be glad to help.
if you have anymore questions I will try to answer your questions to what I know.
.