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3 years ago

Below is a list of 32-bit memory address references, given as word addresses.

2 answers:

5 0

For a direct mapped cache the general rule is: first figure out the bits of the offset (the right-most bits of the address), then figure out the bits of the index (the next-to right-most address bits), and then the tag is everything left over (on the left side).

One way to think of a direct mapped cache is as a table with rows and columns. The index tells you what row to look at, then you compare the tag for that row, and if it matches, the offsettells you which column to use. (Note that the order you use the parts: index/tag/offset, is different than the order in which you figure out which bits are which: offset/index/tag.)

So in part (a) The block size is 1 word, so you need 0 offset bits (because 20=120=1). You have 16 blocks, so you need 4 index bits to give 16 different indices (because 24=1624=16). That leaves you with the remaining 28 bits for the tag. You seem to have gotten this mostly right (except for the rows for "180" and "43" where you seem to have missed a few bits, and the row for "181" where you interchanged some bits when converting to binary, I think). You are correct that everything is a miss.

For part (b) The block size is 2 words, so you need 1 offset bit (because 21=221=2). You have 8 blocks, so you need 3 index bits to give 8 different row indices (because 23=823=8). That leaves you with the remaining 28 bits for the tag. Again you got it mostly right except for the rows for "180" and "43" and "181". (Which then will change some of the hits and misses.)

koban [17]3 years ago

5 0

i don't know this answer

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JulijaS [17]

I believe your answer would be:

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2: Release the computer's current IP address. To do this, type "ipconfig /release" into the command prompt window and press Enter.

3: Acquire a new IP address. Do this by typing "ipconfig /renew" into the command prompt window and pressing Enter. This should assign the computer a new IP address, which will be different from the previous address.

4: Cycle your modem's power. If the above steps don't work, you can try renewing your IP address by cycling your modem's power. Turn off both your computer and your modem (and your router, if you have one). Wait at least 5 minutes, then turn everything back on. If your computer is set to receive an IP address dynamically (the most likely configuration), you should be assigned a new IP address automatically.

5: Check to make sure your IP address has changed. To do this, you can log on to a number of different websites that tell you your IP address.

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Write a class named Book containing: Two instance variables named title and author of type String. A constructor that accepts tw

andrey2020 [161]

Answer:

The code to this question can be given as:

Code:

public class Book //define class.

{

private String title, author; //define variable.

Book(String a, String b) //define parameterized constructor.

{

title = a; //holding value.

author = b;

}

public String toString() //string function

{

return title + "\n" + author; //return value.

}

Explanation:

In the above java code firstly we declare the class book that name is already given in the question. Then we declare the private variable that datatype is string author and title. Then we declare the parameterized constructor. In the parameterized constructor we use the private variable for hold constructor parameter value. Then we declare the tostring() function in this function we return value of the title and author variable.

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