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3 years ago

Explain each kind of pointer and for what it is appropriate.

Computers and Technology

2 answers:

Gnoma [55]3 years ago

4 0

Answer:(1) Null pointer(2)huge pointer (3) far pointer (4)near pointer

Explanation:

(1)Null pointer: null pointer is a type of pointer that points at nothing

(2)Huge pointer: Just like a far pointer, it is use to point to the a whole resident of RAM

(4) Near pointer: It can only point to a smaller segment of RAM

(5) Generic pointer is a pointer used when you have more than one item of different type to choose

Mademuasel [1]3 years ago

3 0

Pointer: A pointer is a variable which holds the address of other variable of the specified data type(like int,float,char). In programming we basically use pointers to store the other variable's address.

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The readline method reads text until an end of line symbol is encountered, how is an end of line character represented

zhannawk [14.2K]

Answer:

Explanation:

readline() method is used to read one line from a file. It returns that line from the file.

This line from the file is returned as a string. This string contains a \n at the end which is called a new line character.

So the readline method reads text until an end of line symbol is encountered, and this end of line character is represented by \n.

For example if the file "abc.txt" contains the lines:

Welcome to abc file.

This file is for demonstrating how read line works.

Consider the following code:

f = open("abc.txt", "r") #opens the file in read mode

print(f.readline()) # read one line from file and displays it

The output is:

Welcome to abc file.

The readline() method reads one line and the print method displays that line.

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3 years ago

In 4-bit two's complement representation, what is the binary encoding of the number -5?

Katena32 [7]

Answer:

a) 1011

Explanation:

In 4 bit two's complement representation, the first bit is the sign bit.

If the sign bit is 1, the number is negative.

If the sign bit is 0, the number is positive.

What is the magnitude of the sign bit?

In n-bit two's complement representation, the magnitude of the sign bit is:

$2^{n-1}-1$

So, in 4-bit two's complement representation, the magnitude of the sign bit is:

$2^{4-1}-1 = 8$

Since the number is negative, the value of this bit is -8.

The other bits are magnitude bits, positive.

We have that the sum of these bits must be -5, and we already have -8. So what should be the value of these last 3 bits?

First, i am going to solve this equation to find the decimal value of the last three bits.

$-5 = -8 + x$

$x = 3$

So, the last three bits are:

$3_{10} = (011)_{2}$

The binary encoding of the number -5 is:

a) 1011

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3 years ago

Alice's public key, and sends back the number R encrypted with his private key. Alice decrypts the message and verifies that the

Agata [3.3K]

There are different kinds of keys. The identities of Alice and Bob are verified in this protocol.

<h3>What is public and private key in SSL?</h3>

These keys are known to be a kind of related pair of text files and they are often made together as a pair if one makes their Certificate Signing Request (CSR).

Note that the private key is different file that is often used in the encryption/decryption of data so as to sent a file between one's server and the connecting clients.

Learn more about public/private key from

brainly.com/question/8782374

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Answer:

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barxatty [35]

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