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中国大学MOOC答案
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The zero-bit insert/delete method states that if the sender is in a sequence of bits between two F flags. How many successive ones are detected, if it increments the number by one, regardless of whether the bit after it is 0 or 1.
The zero-bit insert/delete method states that if the sender is in a sequence of bits between two F flags. How many successive ones are detected, if it increments the number by one, regardless of whether the bit after it is 0 or 1.
中国大学MOOC答案
数据帝
2024-04-09
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A、4
B、5
C、6
D、8
喵查答案:
5
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Assume that the data link layer adopts go-back-N mode for error control, and the sender has already sent the frames numbered from 0 to 7. When the timer times out and the confirmation of frame 1 does not return, what is the number of frames that the sender needs to retransmit?
Which does not belong to the data link layer among following functions?
关于作者:
数据帝
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Generally speaking, the higher the sound quality is required, the higher the quantization level and the lower the sampling frequency is.
The higher the sampling frequency, the closer the discrete digitized sound wave is to its original waveform.
Audio files in WAV format do not use compression algorithm, so they have good sound restorability, strong stereoscopic impression and relatively large file capacity.
MPEG video compression standards include MPEG-1, MPEG-2, MPEG-4, MPEG-7 and MPEG-21.
定义如下变量和数组: int k; int a[3][3]={1,2,3,4,5,6,7,8,9}; 则下面语句的输出结果是________。 for(k=0;k<3;k++) printf("%d ",a[k][2-k]);
下面程序的运行结果是________int main(){ int a[6],i; for(i=1;i3))%5; printf(“%2d”,a[i]); } return 0;}
定义如下的变量和数组int i;int y[2][3]={2,4,6,8,10,12}则下面语句输出结果for(i=0;i<2;i++)printf("%d ",y[1-i][i+1]);
以下程序段给数组所有的元素的输入数据,请选择正确的答案#includemain(){float x[5],m=0;while(m<5)scanf(“%.2f”,______);}
要求下面的程序运行后,显示如下结果:2 10 4 61 5 2 32 4 7 85 1 3 2则程序中的划线处应填入________.#include void main( ){ int a[4][4]={ ________ }; int i,j; for(i=0;i<4;i++) {for(j=0;j<4;j++) printf("%4d",a[i][j]); printf("\n"); }
执行下面的程序段后,变量a中的值为int a=3, s[5]={1};s[0]=a; a=s[2]*10;
执行下面的程序段后,变量a中的值为int a=3, s[5]={1,2};s[0]=a; a=s[2]*10;
下列程序执行后的输出结果是int a[3][3]={1,2,3,4,5,6,7,8,9};printf(“%d \n”,a[1][2]);