To Set the kernel parameters in linux , first edit the file '/etc/sysctl.conf' after making the changes save the file and run the command 'sysctl -p' , this command will make the changes permanently without rebooting the machine.
What is temporary breakpoint? a) it stops the program once b) it is removed after one execution of the program c) both (a) and (b) d) none of the mentioned
In GDB breakpoints can be skipped by the command a) ignore b) reject c) skip d) none of the mentioned
Which GDB command is used to examine the memory? a) x b) y c) z d) none of the mentioned
Which one of the following is not true about the GDB? a) info register is used to see that what is in the processor registers b) processor registers can not be accessed by GDB c) first 32 bits of the variable can not be examined d) none of the mentioned
Assemble code of the program can be displayed in GDB by the command a) disassemble b) assemble c) assembly d) none of the mentioned
The execution of the program in GDB can be affected by a) arguments b) working directory c) environment d) all of the mentioned
What is the output of this program no 9?
#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
int main()
{
struct sockaddr_in addr;
int fd;
fd = socket(AF_INET,SOCK_STREAM,0);
printf("%dn",fd);
return 0;
}
a) -1
b) 3
c) error
d) none of the mentionedWhat is the output of this program?
#include<stdio.h>
#include<stdlib.h>
#include<netinet/in.h>
#include<sys/types.h>
#include<sys/socket.h>
int main()
{
int fd_server, fd_client, len, len_client;
struct sockaddr_in add_server, add_client;
char buff[10];
fd_server = socket(AF_INET,SOCK_STREAM,0);
if (fd_server == -1){
perror("fd_sock");
exit(1);
}
len = sizeof(add_server);
len_client = sizeof(add_client);
if( bind(fd_server,(struct sockaddr*)&add_server,len) != 0)
perror("bind");
fd_client = accept(fd_server,(struct sockaddr*)&add_client,len_client);
if(fd_client == -1)
perror("accept");
read(fd_client,buff,10);
return 0;
}
a) segmentation fault
b) error at the time of compilation
c) syntax error
d) none of the mentionedThis program can send the request to
#include<stdio.h>
#include<netinet/in.h>
#include<sys/types.h>
#include<sys/socket.h>
int main()
{
int fd_client,fd, len;
struct sockaddr_in add_server;
fd_client = socket(AF_INET,SOCK_STREAM,0);
if (fd_client == -1){
perror("fd_sock");
exit(1);
}
add_server.sin_family = AF_INET;
add_server.sin_port = ntohs(4001);
add_server.sin_addr.s_addr = inet_addr("193.39.0.4");
len = sizeof(add_server);
fd = connect(fd_client,(struct sockaddr*)&add_server,len);
if(fd == -1)
perror("connect");
return 0;
}
a) the system having IP address 193.39.0.4
b) any system present in the network
c) any system of the private network
d) none of the mentionedThis program is valid for
#include<stdio.h>
#include<netinet/in.h>
#include<sys/types.h>
#include<sys/socket.h>
int main()
{
int fd_client,fd, len;
struct sockaddr_in add_server;
fd_client = socket(AF_INET,SOCK_STREAM,0);
if (fd_client == -1){
perror("fd_sock");
exit(1);
}
add_server.sin_family = AF_INET;
add_server.sin_port = ntohs(4001);
add_server.sin_addr.s_addr = inet_addr("144.29.8.2");
len = sizeof(add_server);
fd = connect(fd_client,(struct sockaddr*)&add_server,len);
return 0;
}
a) IPv4
b) IPv6
c) both (a) and (b)
d) none of the mentioned
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