Free Access CompTIA.XK0-005.v2023-01-27.q53 Practice Test (Page 2)

Question 1

A Linux administrator needs to redirect all HTTP traffic temporarily to the new proxy server 192.0.2.25 on port 3128. Which of the following commands will accomplish this task?

A.iptables -t nat -A PREROUTING -p top --dport 81 -j DNAT --to-destination 192.0.2.25:3129

B.iptables -t nat -D PREROUTING -p tcp --sport 80 -j DNAT - -to-destination 192.0.2.25:3128

C.iptables -t nat -I PREROUTING -p top --sport 80 -j DNAT --to-destination 192.0.2.25:3129

D.iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.0.2.25:3128

Question 2

A Linux systems administrator is setting up a new web server and getting 404 - NOT FOUND errors while trying to access the web server pages from the browser. While working on the diagnosis of this issue, the Linux systems administrator executes the following commands:

Which of the following commands will BEST resolve this issue?

A.setsebool -P httpd_can_network_connect_db on

B.restorecon -R -v /var/www/html

C.setenforce 0

D.sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

Question 3

A cloud engineer needs to block the IP address 192.168.10.50 from accessing a Linux server. Which of the following commands will achieve this goal?

A.iptables -i INPUT --ipv4 192.168.10.50 -z DROP

B.iptables -A INPUT -s 192.168.10.30 -j DROP

C.iptables -F INPUT -j 192.168.10.50 -m DROP

D.iptables -j INPUT 192.168.10.50 -p DROP

Question 4

A Linux administrator modified the SSH configuration file. Which of the following commands should be used to apply the configuration changes?

A.systemctl start sshd

B.systemctl reload sshd

C.systemctl stop sshd

D.systemctl mask sshd

Question 5

A Linux systems administrator needs to persistently enable IPv4 forwarding in one of the Linux systems. Which of the following commands can be used together to accomplish this task? (Choose two.)

A.echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf

B.echo "net.ipv6.conf.all.forwarding=l" >> /etc/sysctl.conf

C.echo 1 > /proc/sys/net/ipv4/ip_forward

D.sysctl -w net.ipv4.ip_forward=1

E.sysctl -p

F.sysctl net.ipv4.ip_forward

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