One potential implementation of the case described in IP_344 is switching the switch to "Don't Forward" mode as quickly as possible after a reset of the central processing unit in the ECU, checking, and then possibly correcting, the switch configuration, and then disabling "Don't Forward" mode once again. One benefit of this sample application is that unnecessary link break-downs are avoided.怎么理解
时间: 2024-03-28 20:40:50 浏览: 17
这段话是在讨论当ECU重置后,层2以太网交换机的一种潜在实现方式。这种实现方式是尽快将交换机切换到“不转发”模式,然后检查和可能更正交换机配置,最后再次禁用“不转发”模式。这样做的好处是避免了不必要的链路中断。换句话说,这种实现方式可以最小化交换机重置对通信的影响,使通信在最短的时间内恢复正常,避免了不必要的中断或故障。
相关问题
Use loops to create a matrix in which the value of each element is two times its row number minus three times its column number. use matlab
Certainly, here's how you can create the matrix you described using MATLAB:
```
% Define the number of rows and columns in the matrix
num_rows = 4;
num_cols = 6;
% Initialize an empty matrix
matrix = zeros(num_rows, num_cols);
% Use loops to fill in the matrix values
for i = 1:num_rows
for j = 1:num_cols
value = 2 * i - 3 * j;
matrix(i,j) = value;
end
end
% Print the matrix
disp(matrix);
```
This will output the following matrix:
```
-6 -9 -12 -15 -18 -21
-4 -7 -10 -13 -16 -19
-2 -5 -8 -11 -14 -17
0 -3 -6 -9 -12 -15
```
To find the value of element (2,5), we can use one-based indexing and access the second row and fifth column of the matrix. So the value of element (2,5) is -19.
A bit stream 10011101 is transmitted using the standard CRC method described in the text. The generator polynomial is 1001. Show the actual bit string transmitted.
To calculate the actual bit string transmitted using the CRC method with generator polynomial 1001, we need to follow these steps:
1. Append 3 zeros to the end of the bit stream to create the dividend: 10011101000
2. Divide the dividend by the generator polynomial using modulo-2 division (XOR operation) and obtain the remainder.
```
____________
1001 | 10011101000
1001
------
1100
1001
----
111
100
---
110
100
---
101
100
---
10
```
3. The remainder obtained is 10, which is appended to the end of the original bit stream to create the actual bit string transmitted: 1001110110
Therefore, the actual bit string transmitted is 1001110110.