Linux MCQ Questions & Answers | Computer Science

Home / Computer Science / Linux

73.
Semaphore P( ) operation usually does the following:

Answer & Solution Discuss in Board Save for Later

74.
What is the output of this program?
#include<stdio.h>
#include<unistd.h>
 
int main()
{
    pid_t child;
    child = fork();
    printf("%d\n",child);
    return 0;
}

Answer & Solution Discuss in Board Save for Later

78.
What is the problem with this server 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;
    struct sockaddr_in add_server;
    fd_server = socket(AF_INET,SOCK_STREAM,0);
    if (fd_server == -1)
    {
        perror("fd_sock");
        exit(1);
    }
    add_server.sin_family = AF_INET;
    add_server.sin_port = htons(4001);
    add_server.sin_addr.s_addr = inet_addr("122.23.1.1");
    len = sizeof(add_server);
    if( bind(fd_server,(struct sockaddr*)&add_server,len) != 0)
        perror("bind");
    if(listen(fd_server,5) != 0)
        perror("listen");
    fd_client = accept(fd_server,(struct sockaddr*)&add_server,&len);
    if(fd_client == -1)
        perror("accept");
    return 0;
}

Answer & Solution Discuss in Board Save for Later

79.
Executing the 'cd ..' command when at the root level causes

Answer & Solution Discuss in Board Save for Later

80.
What is the output of this program?
#include<stdio.h>
#include<sys/types.h>
#include<sys/un.h>
#include<sys/socket.h>
#include<errno.h>
 
int main()
{
    struct sockaddr_un addr;
    int fd;
    fd = socket(AF_UNIX,SOCK_STREAM,0);
    if (fd == -1)
        perror("socket");
    addr.sun_family = AF_UNIX;
    strcpy(addr.sun_path,"demo_sock");
    if (bind(4,(struct sockaddr*)&addr,sizeof(addr)) == -1)
        printf("Example\n");
    return 0;
}

Answer & Solution Discuss in Board Save for Later

Read More Section(Linux)

Each Section contains maximum 100 MCQs question on Linux. To get more questions visit other sections.