#include&lt;stdio.h&gt;   #include&lt;stdlib.h&gt;   #include&lt;netinet/in.h&gt;   #include&lt;sys/types.h&gt;   #include&lt;sys/socket.h&gt;&nbsp;   int main&#40;&#41;   &#123;       int fd_server, fd_client, len, len_client;       struct sockaddr_in add_server;       fd_server = socket&#40;AF_INET,SOCK_STREAM,0&#41;;       fd_client = accept&#40;fd_server,&#40;struct sockaddr*&#41;&amp;add_server,&amp;len&#41;;       if&#40;fd_client == -1&#41;           perror&#40;&quot;accept&quot;&#41;;       if&#40;listen&#40;fd_server,5&#41; != 0&#41;           perror&#40;&quot;listen&quot;&#41;;       return 0;   &#125;
A. syntax error
B. error at the time of compilation
C. segmentation fault
D. none of the mentioned
Answer:A
#include&lt;stdio.h&gt;   #include&lt;stdlib.h&gt;   #include&lt;netinet/in.h&gt;   #include&lt;sys/types.h&gt;   #include&lt;sys/socket.h&gt;&nbsp;   int main&#40;&#41;   &#123;       int fd_server, fd_client, len, len_client;       struct sockaddr_in add_server;       fd_server = socket&#40;AF_INET,SOCK_STREAM,0&#41;;       fd_client = accept&#40;fd_server,&#40;struct sockaddr*&#41;&amp;add_server,&amp;len&#41;;       if&#40;fd_client == -1&#41;           perror&#40;&quot;accept&quot;&#41;;       if&#40;listen&#40;fd_server,5&#41; != 0&#41;           perror&#40;&quot;listen&quot;&#41;;       return 0;   &#125;
A. syntax error B. error at the time of compilation C. segmentation fault D. none of the mentioned
Explanation:The listen() must always be used before accept().