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kotykmax [81]
3 years ago
13

Which port must be open on your router to allow you to upload device configuration and firmware updates using trivial file trans

fer protocol to your devices throughout the internetwork?
Computers and Technology
1 answer:
Vika [28.1K]3 years ago
3 0

Answer:

UDP Port 69

<em>Trivial file transfer protocol (TFTP) operates over UDP port 69.</em>

Explanation:

UDP port 69 uses the Datagram Protocol, a communications protocol for the Internet network layer, transport layer, and session layer. This protocol when used over PORT 69 makes possible the transmission of a datagram message from one computer to an application running in another computer. UDP is used with <em>IP (the Internet Protocol)</em> and UDP Port 69 is <em>connectionless </em>which means it does not give reliable communication; it’s up to the application that received the message on Port 69 to process any errors and verify correct delivery.

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Unchecked exceptions require you surround the code that might throw such an exception with a try block or you must use a throws
hammer [34]

Answer:

b. False

Explanation:

False, unchecked exceptions do not cause compilation errors and do not require try/catch blocks or throws statements. However, although they are not required it is good programming to include them in order to handle any exceptions that may arise. If you do not include a proper way to handle such an exception the program will still run but may run into an exception during runtime. If this occurs then the entire program will crash because it does not know how to handle the exception since you did not provide instructions for such a scenario.

6 0
3 years ago
Return a version of the given string, where for every star (*) in the string the star and the chars immediately to its left and
lana [24]

Answer:

Explanation:

The following code is written in Java and uses a for loop with a series of IF ELSE statements to check the next and previous characters in a string. Checking to make sure that there are no asterix. If so it adds that character to the String variable output. Which is returned to the user at the end of the method. Two test cases have been created and the output can be seen in the attached image below.

class Brainly {

   public static void main(String[] args) {

       System.out.println(starOut("sm*eilly"));

       System.out.println(starOut("ab**cd"));

   }

   public static String starOut(String str) {

       String output = "";

       for (int i = 0; i < str.length(); i++) {

           if ((i != 0) && (i != str.length()-1)) {

               if ((str.charAt(i-1) != '*') && (str.charAt(i+1) != '*') && (str.charAt(i) != '*')) {

                   output += str.charAt(i);

               }

           } else {

               if ((i == 0) && (str.charAt(i) != '*') && (str.charAt(i+1) != '*')) {

                   output += str.charAt(i);

               } else if ((i == str.length()-1) && (str.charAt(i) != '*') && (str.charAt(i-1) != '*')) {

                   output += str.charAt(i);

               }

           }

       }

       return output;

   }

}

4 0
3 years ago
A hard drive with a spin speed of 7200 RPM, commences spinning at time = 0, at time = 1.326 ms what is the angle that the disk h
Flura [38]

Answer: I. 57º 17'   II. 1 rad.

Explanation:

A spin speed, implies the relationship between the angle rotated and the time  that has been spinning, which is equal, by definition, to the angular velocity.

ω = Δ∅ / Δt

In order to get the angle rotated in degrees, we need to convert first from RPM (revolutions per minute) to º/sec, as follows:

7200 rev/min *( 1 min/60 sec)* (360º/ 1 rev) = 7200* 6= 43200 º/s

Now, we know that the time passed since it started to spin, was 1.326 msec, i.e., 0.001326 sec.

Remembering that  ω = Δ∅ / Δt, solving for Δ∅, we get:

Δ∅ = 43200 º /s * 0.001326 sec = 57º 17'

II. In order to get the answer in rads, we can convert the rpm to rads/sec, as follows:

7200 rev/min *( 1 min/60 sec)* (2 π/ 1 rev) = 240 π rad/sec.

Applying the same equation as above, we get:

Δ∅ = 240 π rad/s * 0.001326 sec = 1 rad.

7 0
4 years ago
Drag the tiles to the correct boxes to compete the pairs.
levacccp [35]

Provides the fescription of a grammar error = Explain

Changes all occurrences of the misspelled words = Change all

Change the behavior of the grammar checker = Options

Enables you to add or remove misspelled words = Replace


3 0
3 years ago
Read 2 more answers
write an algorithm that gets two values: the price for item A and the quantity purchased. The algorithm should then print the to
pochemuha

Answer:

Explanation:

price = eval(input("price of item: "))

quantity = eval(input("quantity of item: "))

sales_tax = 0.08 # 8% sales tax

total_cost = price*quantity

total_cost_with_tax = total_cost + total_cost*sales_tax

print("total cost: "+str(total_cost))

print("total cost + 8% sales tax: "+str(total_cost_with_tax))

5 0
4 years ago
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