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3 years ago

What does the line of red semicircles mean on a weather map

Computers and Technology

1 answer:

Aliun [14]3 years ago

5 0

A line of red semicircles indicates a warm front on a weather map

Explanation:

Weather fronts are those visible colorful lines that we see moving across weather maps. They represent boundaries that separate two air masses of different air temperatures and humidity. A good example of weather fronts are warm fronts. A Warm frontal type is warm air that moves and advances rapidly towards the cold air to replace the rather cooler air that stands in its path. It sort of collides with the cold air. When this happens, the weather becomes more humid and warm. It is symbolized by a red curved line with red semicircles. The red semicircles are pointed towards the direction of the warm air.

Learn more about Weather fronts in the links attached below

brainly.com/question/3596743

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List the six external parts of a computer system and identify which are output and which are input devices.

Igoryamba

External hardware/peripherals are external devices connected to a computer that extend it's functionality. Some common ones are:

1. Monitor - output
2. Keyboard - input
3. Speakers - output
4. Printer - output
5. Microphone - input
6. Mouse - input

Input is anything that's used to feed/put data into a computer. So for a keyboard that's which keys you're pressing, microphone that's sound data etc. Output is any computer-generated data displayed on screen, printed on paper or in machine readable form, such as a disk.

5 0

3 years ago

Write a function named "json_filter" that takes a JSON formatted string as a parameter in the format of an array of objects wher

7nadin3 [17]

Answer:

Check the explanation

Explanation:

kindly check the well written code below to get the solution to your question.

import json

def json_filter(input_string):

jsonFormat = json.loads(input_string)

result = []

for obj in jsonFormat:

if obj["temperature"] > 38.46:

result.append(obj)

return json.dumps(result)

7 0

3 years ago

Explain why blocking ping (ICMP echo request) packets at an organization's edge router is not an effective defense against ping

tresset_1 [31]

Answer:

The blocking ping is not effective in an organization because it may required ping echo message from some trusted system. the best method will be to do the filtering of incoming echo ICMP messages.

In systems we have ping utility, that is based on ICMP protocol. Its function is to check the end to end connectivity of the system.

In this case a fist all an echo ICMP message is send to the host then host reply with ICMP message. to defend yourself from this flood attack, we need to filter the incoming echo ICMP packet messages. a net filter can be used to achieve it.

The best method be to applied is the firewall having a net filter with limit setting or any intrusion system. In market we have various firewall and intrusion system available to do so.

Explanation:

Solution

Ping Flood Atack:

In this attack the main of the attacker is to saturate the system with ICMP for example (internet control message protocol) traffic. as you have saturated the system, it will have less CPU time to serve others.

Defence against this attack:

In our systems we have ping utility, that is based on ICMP protocol. Its used to check the end to end connectivity of the system. here fist all an echo ICMP message is send to the host then host reply with ICMP message. to defend yourself from this flood attack , we need to filter the incoming echo ICMP packet messages. a Net filter can be used to achieve this.

The best way will be to used the firewall having net filter with limit setting or any intrusion system. In market we have various firewall and intrusion system available to do so.

Blocking ping packets to avoid ping flood attack:

Its not a good approach to block ping packets. because you may required ping echo message from some trusted system. The best option will be to do the filtering of incoming echo ICMP message.

6 0

4 years ago

1. Which of the following is not the name of a Java wrapper class from the Java API?

katovenus [111]

Answer:

1. Which of the following is not the name of a Java wrapper class from the Java API?

A. Byte

B. Int

C. Long

D. Boolean

Int is not a wrapper class

Byte is the wrapper class of byte, Int is not a wrapper class and is a primitive data type, Long is a wrapper class of long, Boolean is a wrapper class for boolean. Hence Int is the correct answer and its wrapper class is Integer.

2. Which of the following statements will cause a compiler error?

A. Integer i = new integer ( ) ;

B. Integer j = new integer ("5") ;

C. Integer k = Integer.valueOf ("5");

D. int m = Integer.pareseInt ("5");

“I” in integer in A and B must be in capital.

3. If variables j and k refer to objects of type Double and j . compareTo (k) returns a value of 1, which of the following is true?

A. The double value held in j is less than the value held inside k.

B. The difference between values held in j and k is 1.

C. The double values held inside j and k are both positive.

D. The double value held inside j is greater than the value held inside k.

Compareto return 1 if first value is greater than with what it is compared.

4. What is a radix as used in the method parseInt (String s, int radix) from the integer class?

A. A numeric base 2 such as for binary or 16 for hexadecimal.

B. The number of characters in the string that represent integers.

C. The Unicode character code to be used when parsing the string.

D. The number of times the string should be repeated before being converted to an int.

The radix value is 10 for decimal, 2 for binary and 16 for hexadecimal. Radix is the base or number of unique digits.

5. Which of the following is a static method of the integer class?

A. intValue ( )

B. parseInt ( )

C. toString ( )

D. compareTo ( )

ParseInt() is a static method of the integer class, and rest are non static methods.

6. Which of the following statements will cause a compiler error?

A. Double a = new Double (10.6) + 3;

B. Integer b = 0;

C. Double c = 0;

D. int d = new Integer (7) ;

In A and C data type does not matches like Double c=0 means Double c=new int(0) which is never true.

7. Which of the following is not an example of autoboxing?

A. Boolean a = false

B. Integer b = new integer (9);

C. double x = 3.0;

Double c = x;

D. Character d = ‘2’;

Autoboxing brings out reference type from the value type, and this is not true for A

8. What is the result of the following code fragment?

BigInteger a = new BigInteger (“10”);

BigInteger b = new BigInteger (“25”);

a . multiply (b);

a . add (b);

System.out.println (a);

A. 10

B. 35

C. 250

D. 275

a.multiply(b) = 250

a.add(b)= 250+25=275

9. What is the name of the BigInteger method that will calculate the remainder of division by another BigInteger?

A. modulo ( )

B. modulus ( )

C. divisor ( )

D. remainder ( )

Remainder is the correct answer.

Explanation:

Please check answer.

5 0

4 years ago

Which statement regarding Java files is false?

mafiozo [28]

Answer:

Records in a Java sequential file are stored in order by record key.

3 0

3 years ago