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Rudik [331]
3 years ago
14

4.2 Code Practice: Question 2​

Computers and Technology
1 answer:
victus00 [196]3 years ago
3 0

Answer:4.2

Explanation:

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Skinner designed a soundproof apparatus, often equipped with a lever or bar, with which he conducted his experiments in operant
Jlenok [28]

Answer: Skinner box

Explanation: Skinner box is referred as the environment to conduct an experiment to observe the natural behavior of the element in a chamber. The Skinner box is also known as operant conditioning chamber. It is most commonly used for the experiments to be conducted with the animals in the operant conditioning chamber for the research purpose.

It is also soundproof tool and also refereed as the lever box as it contains lever .Thus the answer is Skinner box.

5 0
3 years ago
Binary numbers are based on __________.
Lena [83]
D. Two digits (1s and 0s
8 0
3 years ago
Read 2 more answers
A ____ is a key-dependent, one-way hash function that allows only specific recipients(symmetric key holders) to access the messa
Alexxx [7]

Answer: (C) MAC

Explanation:

MAC is stand for the message authentication code and it is one of the key dependent hash function. Message authentication provide the data integrity and also the origin of data authentication.

  • It basically allow the specific recipients known as the holder of the symmetric key.
  • The message authentication code uses the CBC (Cipher block chaining) mode for constructing the MAC algorithm and it also uses the block cipher for the conjunction by using the CBC operations.    

On the other hand, all the options are incorrect as they are not the key dependent hash function.

Therefore, Option (C) is correct.

7 0
3 years ago
List the various cases where use of a NULL value would be appropriate.
melomori [17]

Answer:

The answer is below

Explanation:

There are cases where the use of a NULL value would be appropriate in a computer programming situation. These cases can be summarily described below:

The first case is in a situation where the value of the attribute of a certain element is known to exist, but the value can not be found

The second case is in a situation where the value of the attribute of a certain element is not known whether it exists or not.

4 0
3 years ago
In cell E14, enter a date function that calculates the number of days between the Initial Deadline (cell E10) and the Date Recei
tatuchka [14]

Answer:

The formula to enter in E14 is as follows:

=DAYS(D14,$E$10)

Explanation:

Required

Formula to calculate the number of days between E10 and D14

The syntax to do this is:

=DAYS(end_date,start_date)

So, we have:

=DAYS(D14,E10)

The question requires a mix of relative and mixed references because cell E10 will be constant in calculating the difference for dates in other cells.

In other words, the initial date is constant for all

So, the update formula is:

=DAYS(D14,$E$10)

Notice the $ between in E10; this represents mixed referencing

When dragged to E15 till E68, the formulas in the respective cells will be:

=DAYS(D15,$E$10) .............................. =DAYS(D68,$E$10)

7 0
3 years ago
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