NO: 12:
A network administrator issues the dig www.comptia.org command and receives an NXDOMAIN response. Which of the following files should the administrator check first?
A systems administrator is customizing a new Linux server. Which of the following settings for umask would ensure that new files have the default permissions of -rw-r--r--?
A Linux engineer needs to block an incoming connection from the IP address 2.2.2.2 to a secure shell server and ensure the originating IP address receives a response that a firewall is blocking the connection. Which of the following commands can be used to accomplish this task?
A network administrator issues the dig www.foo.com command and receives an NXDOMAIN response. Which of the following files should the administrator check first?
A Linux systems administrator is trying to execute a particular shell script on a server. The administrator reviews the following outputs:
shell
$ ./startup.sh
bash: ./startup.sh: Permission denied
$ ls -l startup.sh
-rw-rw-r-- 1 companyabc companyabc 18 October 15:35 startup.sh
Which of the following commands should the administrator use to allow the script to run?
A network administrator issues the dig ww. comptia. org command and receives an NXDOMAIN response. Which of the following files should the administrator check first?
An administrator has generated an RSA SSH key pair to log in to a remote server. After copying the public key and attempting to log in, the administrator sees the following message:
admin@192.168.10.50: Permission denied (publickey,password)
After seeing the message, the administrator attempts to connect using ssh -v admin@192.168.10.50 and notices the following debug output:
debug1: send_pubkey_test: no mutual signature algorithm
Which of the following actions should the administrator take first to remediate this issue?
A Linux engineer receives the following notification from a system:
cp: cannot create regular file '/app/appdata.tar*': No space left on device
The engineer obtains the following output:
[root@host ~]# df -i /app
Filesystem Inodes IUsed IFree Mounted on
/dev/vdb 2048 2048 0 /app
bash
[root@host ~]# df -h /app
Filesystem Size Used Avail Use% Mounted on
/dev/vdb 2.0G 6.1M 1.9G 1% /app
Which of the following describes the state of the filesystem based on this output?
An administrator would like to list all current containers, regardless of their running state. Which of the following commands would allow the administrator to accomplish this task?
A Linux administrator is troubleshooting an issue in which users are not able to access https://portal.comptia.org from a specific workstation. The
administrator runs a few commands and receives the following output:
Which of the following tasks should the administrator perform to resolve this issue?
