CompTIA XK0-005 Practice Test - Questions Answers, Page 25

A Linux administrator is configuring a new internal web server fleet. The web servers are up and running but can only be reached by users directly via IP address. The administrator is attempting to fix this inconvenience by requesting appropriate records from the DNS team. The details are:

Hostname: devel.comptia.org

IP address: 5.5.5.1, 5.5.5.2, 5.5.5.3, 5.5.5.4

Name server: 5.5.5.254

Additional names: dev.comptia.org, development.comptia.org

Which of the following types of DNS records should the Linux administrator request from the DNS team? (Select three).

After connecting to a remote host via SSH, an administrator attempts to run an application but receives the following error:

[user@workstation ~]$ ssh admin@srv1

Last login: Tue Mar 29 18:03:34 2022

[admin@srvl ~] $ /usr/local/bin/config_manager

Error: cannot open display:

[admin@srv1 ~] $

Which of the following should the administrator do to resolve this error?

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 Linux administrator provisioned a new web server with custom administrative permissions for certain users. The administrator receives a report that user1 is unable to restart the Apache web service on this server. The administrator reviews the following output:

[ root@server ] # id user1

UID=1011 (user1) gid=1011 (USER1) groups=1011 (user1), 101 (www-data), 1120 (webadmin)

[ root@server ] # cat /etc/sudoers.d/custom.conf

user1 ALL=/usr/sbin/systemctl start httpd, /usr/sbin/systemctl stop httpd

webadmin ALL=NOPASSWD: /etc/init.d.httpd restart, /sbin/service httpd restart, /usr/sbin/apache2ctl restart

#%wheel ALL=(ALL) NOPASSWD: ALL

Which of the following would most likely resolve the issue while maintaining a least privilege security model?

A Linux system is having issues. Given the following outputs:

# dig @192.168.2.2 mycomptiahost

; << >> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 << >> @192.168.2.2 mycomptiahost

; (1 server found)

;; global options: +cmd

;; connection timed out; no servers could be reached

# nc -v 192.168.2.2 53

Ncat: Version 7.70 ( https://nmap.org/ncat )

Ncat: Connection timed out.

# ping 192.168.2.2

PING 192.168.2.2 (192.168.2.2) 56(84) bytes of data.

64 bytes from 192.168.2.2: icmp_seq=1 ttl=117 time=4.94 ms

64 bytes from 192.168.2.2: icmp_seq=2 ttl=117 time=10.5 ms

Which of the following best describes this issue?

Users are experiencing high latency when accessing a web application served by a Linux machine. A systems administrator checks the network interface counters and sees the following:

Which of the following is the most probable cause of the observed latency?

While troubleshooting server issues, a Linux systems administrator obtains the following output:

[rootGhost ~]# total free -m used free shared buf f/cache available

Mem: 3736 3598 88 2 48 29

Swap: 2047 1824 223

Which of the following best describes the state of the system?

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 is running a web server in a container named web, but none of the error output is not showing. Which of the following should the administrator use to generate the errors on the container?