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NEW QUESTION 33
A Linux administrator receives the following while attempting to remove a file:
Which of the following commands will resolve the issue?
- A. chmod -0775 test.txt
- B. setfacl -m u:root:x test.txt
- C. cattr -i test.txt
- D. chcon -u system_u test.txt
Answer: C
Explanation:
Therefore ‘chattr -i test.txt’ will remove the immutable flag (remember that chattr uses – and + to turn off/on options unlike a normal command option which is only ever preceeded by a -) so that the file can then be deleted by rm.
NEW QUESTION 34
A technician suspects a company’s border firewall is down, thus blocking Internet access. The technician executes the following commands:
#ping -c 1 firewall.company.com
64 bytes from firewall.company.com (192.168.1.1): icmp_seq=1 ttl=64 time=0.061ms
#ping -c 16 www.comptia.com
16 packets transmitted, 0 received, 100% packet loss, time 14999ms
Which of the following commands should the technician use to BEST determine the source of this outage?
- A. traceroute
- B. tcpdump
- C. nmap
- D. dig
Answer: A
NEW QUESTION 35
A Linux user needs to create a file named newfile in the home directory that mirrors the contents of the /
etc/resolv.conf file.
Which of the following commands would accomplish this task?
- A. printf /etc/resolv.conf > /home/user/newfile
- B. cat /etc/resolv.conf > /home/user/newfile
- C. echo /etc/resolv.conf > /home/user/newfile
- D. grep /etc/resolv.conf < /home/user/newfile
Answer: B
NEW QUESTION 36
A Linux administrator wants to obtain a list of files and subdirectories in the /etc directory that contain the word “services”. Once the files and subdirectories are discovered, they should be listed alphabetically in the / var/tmp/foundservicesfile. Which of the following shell scripts will accomplish this task?
#/bin/bash
- A. find -name services -sort </var/tmp/foundservices
#/bin/bash - B. locate /etc -sort -name services > /var/tmp/foundservices
#/bin/bash - C. find /etc -name services | sort > /var/tmp/foundservices
#/bin/bash - D. find /etc -name services -sort > /var/tmp/foundservices
Answer: B
NEW QUESTION 37
A Linux administrator suspects unauthorized users are attempting to log in to the Linux server remotely. Which
of the following should the administrator check FIRST?
- A. /var/log/messages
- B. /var/log/secure
- C. /var/log/dmesg
- D. /var/log/kern.log
Answer: B
Explanation:
What’s logged?
RedHat and CentOS based systems use this log file instead of /var/log/auth.log. It is mainly used to track the usage of authorization systems. It stores all security related messages including authentication failures. It also tracks sudo logins, SSH logins and other errors logged by system security services daemon.
NEW QUESTION 38
……
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