📜  门| GATE-IT-2004 |第 80 题

📅  最后修改于: 2021-09-26 03:25:55             🧑  作者: Mango

在数据链路协议中,帧分隔符标志由 0111 给出。假设使用位填充,发送器发送数据序列 01110110 为

(一) 01101011
(乙) 011010110
(三) 011101100
(四) 0110101100答案: (D)
解释:

In the above question, if, in the data link layer bits stuffing is employed 
then bit stuffing is done using the flag delimiter. If there is a flag 
of n bits then we will compare the data sequence with the flag and for every 
n-1 bits matched found, a bit 0 is stuffed in the data sequence after the matched
sequence.
Thus using the above logic
Delimiter flag: 0111
Data sequence: 01110110
So, for a flag of 4 bits we will compare data sequence with pattern of 
3 bits i.e. 011.
0 1 1 0 1 0 1 1 0 0
In the above pattern the underlined bits are found matched, hence, 0 in italics 
is stuffed. Thus resulting in the data sequence as 0110101100 which is option D

本说明由Namita Singh 提供。
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