How should an administrator test that Domain Name Services (DNS) are working correctly on a client workstation? A. ping 168.168.168.18 B. telnet 168.168.168.18 C. nslookup www.comptia.org D. ftp.comptia.org.... A user executed a Pearl script that initiated a connection request to a server without ever completing the network connection. This was done multiple times until the server could no longer communicate on the network. What kind of attack was initiated? A. Trojan horse B. Spoofing C. Buffer overflow D. Denial of Service......

What command must you run to update the database used by the whatis command? A. makewhatis B. updatedb C. make whatisdb D. The database is updated automaticly 22 . Which of the following would improve your ability to provide user support? A. Email your user's your office hours. B. Create a directory containing instructions for using all installed applications. C. Whenever a user has a problem, fix it and leave. D. Use as much technical language as possible when explaining what went wrong. 23 . A customer needs a Linux server to act as a Microsoft Windows NT server. Which of the following must be installed for this server?.....

You want to find how to set the manpath variable so you type man man. What would you type wile displaying the page to find the location where manpath is discussed? A. man –c password B. man -K password C. man –C password D. man –q password..... You have a technician who will come in after hours to install new hardware in your system. You do not want to give him the root password, but he needs to be able to shutdown the system. How can you accomplish this? A. Add his username to the /etc/shutdown.conf file. B. Give him the root password and change it when you arrive the next morning....

You are going to reboot your system but want to warn your users to log off. Which of the following commands will send a message to the users? A. halt B. reboot C. shutdown D. init.... You are going to install a new hard disk in your system. Which of the following commands will halt your system so you can install the new hardware? A. shutdown –h now B. shutdown –k now C. shutdown –t now D. shutdown –r now... You have changed /etc/lilo.conf to cause a boot: prompt to show, however, when you restart your computer you still do not have a prompt. What should you do? A. Rename your configuration file to /etc/lilo.conf.new.....

A user has just connected a SCSI scanner device to his computer. After installing the vendor's drivers, the scanner cannot be correctly used by the software. All of the following are possible reasons EXCEPT A. The SCSI ID is set incorrectly. B. The last device is not terminated. C. There is an IRQ conflict between the scanner and another device. D. The scanner device is damaged...... Which of the following tasks is the most important best practice when performing a new installation of Linux for a customer? A. Apply the latest patches and updates to the operating system and applications.....

A Linux machine has a local address of 192.168.1.1 with a subnet mask of 255.255.255.0. At this time, all services are denied. Which of the following lines would be appended to the hosts.allow file to permit access to the Web service on the local subnet? A. ALL except httpd: 192.168.1.1/24 B. httpd: 192.168.1. C. 192.168.1.255/255.255.255.0:httpd D. ALL: 192.168.1.255/24.... Where is the first place to look for error messages while installing and testing an application? A. /var/log/messages B. /var/log/dmesg C. /var/log/kernel/errors D. /tmp/boot.log.....

Which runlevel only grants root access? A. 2 B. 1 C. 3 D. 0.... What file should be edited to add two additional gettys to runlevel 3? A. /etc/inittab B. /usr/local/etc/getty.conf C. /etc/rc.dlinit.d/inittab D. /etc/termcap... What command is used to remove a kernel module? A. /uninstall B. rm –rf C. rm module D. rmmod....

What is the correct way to create a function in PHP? a.function myFunction() b.new _function myFunction() c.create myFunction()..... What is the correct way to open the file "time.txt" as readable? a.open ("time.txt", "read"); b.fopen ("time.txt" ,"r+"); c.fopen ("time.txt" ,"r"); d.open ("time .txt");.... PHP allows you to send emails directly from a script a.False b.True.... What is the correct way to connect to a MySQL database? a.mysql_open ("localhost"); b.mysql_connect "localhost");.....

What does PHP stand for? a.Private Home Page b.Personal Hypertext Processor c.Personal Home Page d.PHP: Hypertext Preprocessor..... The PHP syntax is most similar to: a.Perl and C b.VBScript c.JavaScript How do you get information from a form that is submitted using the "get" method? a.Request.QueryString; b.$_GET[]; c.Request.Form; When using the POST method, variables are displayed in the URL: a.True b.False In PHP you can use both single quotes ( ' ' ) and double quotes ( " " ) for strings: a.True b.False....

Làm thế nào để hiển thị viền 1 phần tử với kích thước đường viền như sau: a.The top border = 10 pixels b.The bottom border = 5 pixels c.The left border = 20 pixels d.The right border = 1pixel? a.border-width:5px 20px 10px 1px b.border-width:10px 5px 20px 1px c.border-width:10px 1px 5px 20px d.border-width:10px 20px 5px 1px... Tag nào tạo ra 1 checkbox? a.<check> b.<input type="check"> c.<checkbox> d.<input type="checkbox">... Đâu là tag tạo ra 1 danh sách đứng đầu bằng số a.<ul> b.<list> c.<ol> d.<dl>...