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liq [111]
3 years ago
5

Some early computers protected the operating system by placing it in a memory partition that could not be modified by either the

user job or the operating system itself. Describe two difficulties that you think could arise with such a scheme.
Computers and Technology
1 answer:
Sav [38]3 years ago
5 0

Answer:

Check the explanation

Explanation:

1. Such operating systems cannot be modified and updating such OS (operating systems) would be almost impossible. This can prove fatal if we detect some serious bug, since there is no way to correct it.

2. The entire password and other credentials of users must be kept in an unsecure and vulnerable memory, since we can’t store it in the protected memory.

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All of the following are advantages of database-stored information, except: Question 3 options: 1) Reduced information redundanc
enot [183]

Answer:

3) Reduced information integrity.

Explanation:

This is not an advantage, Information integrity is a key factor when storing information on a database. As multiple users will access it, they will need this data to be authentic and dependable. Any reduction in information integrity is a great disadvantage.

5 0
3 years ago
Heads or tails
Pani-rosa [81]

import random

heads = 0

tails = 0

i = 0

while i < 1000:

   rnd_value = random.randint(1, 2)

   if rnd_value == 1:

       heads += 1

       print("heads")

   else:

       tails += 1

       print("tails")

   i += 1

print("Heads appeared {} times and tails appeared {} times".format(heads, tails))

I hope this helps!

5 0
3 years ago
def getCharacterForward(char, key): """ Given a character char, and an integer key, the function shifts char forward `key` steps
zhenek [66]

Answer:

  1. def getCharacterForward(char, key):  
  2.    charList = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
  3.    if(len(char) > 1):
  4.        return None  
  5.    elif(not isinstance(key, int)):
  6.        return -1
  7.    else:
  8.        index = charList.find(char)
  9.        if(index + key <= 25):
  10.            return charList[index + key]
  11.        else:
  12.            return charList[(index + key)% 26]
  13. print(getCharacterForward("C", 4))
  14. print(getCharacterForward("X", 4))

Explanation:

Firstly, define a charList that includes all uppercase alphabets (Line 2). We presume this program will only handle uppercase characters.

Follow the question requirement and define necessary input validation such as checking if the char is a single character (Line 4). We can do the validation by checking if the length of the char is more than 1, if so, this is not a single character and should return None (Line 5). Next, validate the key by using isinstance function to see if this is an integer. If this is not an integer return -1 (Line 6 - 7).

Otherwise, the program will proceed to find the index of char in the charList using find method (Line 9). Next, we can add the key to index and use the result value to get forwarded character from the charList and return it as output (Line 11).

However, we need to deal a situation that the char is found at close end of the charList and the forward key steps will be out of range of alphabet list. For example the char is X and the key is 4, the four steps forward will result in out of range error. To handle this situation, we can move the last two forward steps from the starting point of the charList. So X move forward 4 will become B. We can implement this logic by having index + key modulus by 26 (Line 13).  

We can test the function will passing two sample set of arguments (Line 15 - 16) and we shall get the output as follows:

G

B

8 0
3 years ago
Which of the following terms best describes the security domain that relates to how data is classified and valued?
d1i1m1o1n [39]

Answer:

c) Access Control.

Explanation:

The term which describes the security domain best that relates to  how the data is valued and classified is Access Control.

Access Control :It is the restriction of access of a resource or a place that is selective.Permission to access a resource is called authorization.It is an important term in the field of information security and physical security.

7 0
3 years ago
All of the following are simple steps for optimizing web page content except:
dangina [55]

Answer:

The correct answer is letter "B": segmenting computer servers to perform dedicated functions.

Explanation:

Computer segmentation refers to separating a server from the rest of the computers within the same network. The segmentation can separate one computer from others or groups of servers from one another. Thew type of segmentation will always depend on the device used to do the separation of the servers.

3 0
3 years ago
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