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zhuklara [117]
3 years ago
5

What is the bandwidth-delay product for a 50 Mbps channel on a geostationary satellite (assume a RTT of 540 ms)? If the packets

are all 1500 bytes (including headers), how big should the window be in packets to maximize the packet delivery rate?
Computers and Technology
1 answer:
gogolik [260]3 years ago
8 0

Answer:

The answer is 2250 packets.

Explanation:

The round trip delay is about 540 millisec, so with a 50 Mbps channel the bandwidth product delay is 27 megabits or 3.375.000 bytes. With packets of 1500 bytes, it takes 2250 packets to fill hte pipe, so the window should be at least 2250 packets.

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The variable sentence stores a string. Write code to determine how many words in sentence start and end with the same letter, in
irina [24]

Answer:

sentence = "hello wow a stores good"

same_letter_count = 0

sentence_list = sentence.split()

for s in sentence_list:

   if s[0] == s[-1]:

       same_letter_count += 1

print(same_letter_count)

Explanation:

*The code is in Python.

Initialize the sentence with a string

Initialize the same_letter_count as 0

Split the sentence using split method and set it to the sentence_list

Create a for loop that iterates through the sentence_list. If the first and last of the letters of a string are same, increment the same_letter_count by 1

When the loop is done, print the same_letter_count

4 0
3 years ago
The Yuba College Library would like a program to calculate patron fines for overdue books. Fines are determined as follows: Pape
mestny [16]

Answer:

Explanation:

The following Python code creates all of the necessary functions in order to request and validate all of the inputs from the user. Once everything is entered and validated it calculates the total fee and outputs it to the user. Also calls the entire class at the end using a test variable...

class Customer:

   library_card = 0

   patrons_name = ""

   patrons_address = ""

   type_of_book = ""

   book_title = ""

   days_overdue = 0

   fee = 0.0

   book_list = ['paperback regular', 'paperback best seller', 'magazine', 'hardcover']

   def __init__(self):

       self.library_card = self.get_library_card()

       self.patrons_address = input("Patron's Address: ")

       self.book_title = input("Book Title: ")

       self.type_of_book = self.get_type_of_book()

       self.days_overdue = float(self.get_days_overdue())

       self.calculate_total()

       print("Your total Fee is: " + str(self.fee))

   def get_library_card(self):

       library_card = int(input("Enter 4-digit library card number: "))

       if (type(library_card) == type(0)) and (len(str(library_card)) == 4):

           return library_card

       else:

           print("Invalid Card number:")

           self.get_library_card()

   def get_type_of_book(self):

       type_of_book = input("Type of Book 1-4: ")

       if (int(type_of_book) > 0) and (int(type_of_book) <= 4):

           return int(type_of_book)

       else:

           print("Invalid Type")

           self.get_type_of_book()

   def get_days_overdue(self):

       days_overdue = input("Number of Days Overdue: ")

       if int(days_overdue) >= 0:

           return days_overdue

       else:

           print("Invalid number of days")

           self.get_days_overdue()

   def calculate_total(self):

       if self.type_of_book == 1:

           self.fee = 0.20 * self.days_overdue

           if self.fee > 8:

               self.fee = 8

       elif self.type_of_book == 2:

           self.fee = 0.50 * self.days_overdue

           if self.fee > 15:

               self.fee = 15

       elif self.type_of_book == 3:

           self.fee = 0.25 * self.days_overdue

           if self.fee > 5:

               self.fee = 5

       else:

           self.fee = 0.30 * self.days_overdue

           if self.fee > 23:

               self.fee = 23

test = Customer()

5 0
3 years ago
A type of touch screen that can be up to four feet by six feet is a(n) _____.
Llana [10]
Hi,

A type of touch screen that can be up to four feet by six feet is a(n) <span>multitouch interface.
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7 0
3 years ago
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A network administrator identifies sensitive files being transferred from a workstation in the LAN to an unauthorized outside IP
Sav [38]

Answer:

D. Zero-day

Explanation:

It is clearly stated that the antivirus is still up-to-date on the workstation, and there has been no alterations to the firewall. Hence, this means the software is functional and up-to-date with all known viruses. This shows that this attack is unknown to the manufacturer of the antivirus software and hence no virus definition or patch fixing this problem has been developed yet. In this light, it is a zero-day.

A zero-day is a type of vulnerability in a software that is not yet known to the vendor or manufacturer, hence this security hole makes the software vulnerable to attackers or hacker before it is been fixed.

4 0
4 years ago
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Whitepunk [10]

Answer:

because they have to rest

3 0
3 years ago
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