Debugging Question:

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By this program the soket "san_sock" will create
#include<stdio.h>
#include<sys/types.h>
#include<sys/un.h>
#include<sys/socket.h>

int main()
{
struct sockaddr_un add_server;
int fd_server;
fd_server = socket(AF_UNIX,SOCK_STREAM,0);
if(fd_server == -1)
perror("socket");
add_server.sun_family = AF_UNIX;
strcpy(add_server.sun_path,"san_sock");
if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0)
perror("bind");
return 0;
}
a) in the /tmp directory
b) in the /usr directory
c) in the present working directory
d) none of the mentioned

Answer:

c) in the present working directory
Output:
[root@localhost google]# ls
san.c
[root@localhost google]# gcc -o san san.c
[root@localhost google]# ./san
[root@localhost google]# ls
san san.c san_sock
[root@localhost google]#

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In this program, the third argument of the socket() is used for _____ potocol.
#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
int main()
{
int fd_socket;
if(socket(AF_UNIX,SOCK_STREAM,0) == -1)
perror("socket");
return 0;
}
a) TCP/IP
b) UDP
c) both (a) and (b)
d) none of mentioned

What is the length of of the queue for pending connections in this program?

#include<stdio.h>
#include<sys/types.h>
#include<sys/un.h>
#include<sys/socket.h>

int main()
{
struct sockaddr_un add_server;
int fd_server;
fd_server = socket(AF_UNIX,SOCK_STREAM,0);
if(fd_server == -1)
perror("socket");
add_server.sun_family = AF_UNIX;
strcpy(add_server.sun_path,"server_sock2");
if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0)
perror("bind");
if( listen(fd_server,3) != 0)
perror("listen");
return 0;
}
a) 0
b) 1
c) 2
d) 3