Sec Ops Linux Quiz

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Sec Ops Linux Quiz
Martin Covill
Quiz by Martin Covill, updated more than 1 year ago
Martin Covill
Created by Martin Covill about 9 years ago
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Resource summary

Question 1

Question
Which of the following statements would create a default route using a gateway of 192.168.1.1?
Answer
  • A. netstat -add default gw
  • B. route default 192.168.1.1
  • C. ip route default 192.168.1.1
  • D. route add default gw 192.168.1.1
  • E. ifconfig default gw 192.168.1.1 eth0

Question 2

Question
Which of the following is the purpose of the dig command?
Answer
  • A. To adjust a directory’s hidden permissions
  • B. To search for files on the filesystem
  • C. To adjust a file’s hidden permissions
  • D. To perform hostname lookups
  • E. To ping all known hosts on the current subnet

Question 3

Question
Which of the following configuration files does sudo read when determining if a user is permitted to run applications with root privileges?
Answer
  • A. /etc/groups
  • B. /etc/passwd
  • C. /etc/sudoers
  • D. /etc/sudo.conf

Question 4

Question
The files in the /etc/skel directory are used by the:
Answer
  • A. pwconv command
  • B. pwunconv command
  • C. useradd command
  • D. passwd command

Question 5

Question
The [blank_start]FTP[blank_end] protocol uses two (2) TCP/IP ports one of them being port 20 for data transfer? (Please do not enter duplicate answers in this field.)
Answer
  • FTP

Question 6

Question
Which of the following statements about crontab are true? (Select TWO).
Answer
  • A. Every user may have their owncrontab.
  • B. Changing a crontab requires a reload/restart of the cron daemon.
  • C. The cron daemon reloads crontab files automatically when necessary.
  • D. hourly is the same as “0 * * * *”.
  • E. A cron daemon must run for each existing crontab.

Question 7

Question
Which of the following commands is used to deactivate a network interface?
Answer
  • A. ifdown
  • B. ipdown
  • C. net
  • D. netdown

Question 8

Question
Which of the following looks like a correct entry in the /etc/hosts file?
Answer
  • A. localhost 127.0.0.1 localhost.localdomain
  • B. localhost.localdomainlocalhost 127.0.0.1
  • C. localhostlocalhost.localdomain 127.0.0.1
  • D. 127.0.0.1 localhost.localdomainlocalhost
  • E. localhost.localdomain 127.0.0.1 localhost

Question 9

Question
Which of the following lines would an administrator find in the file /etc/resolv.conf?
Answer
  • A. mycompany.com
  • B. 192.168.168.4 dns-server
  • C. hosts: files,dns
  • D. domain mycompany.com

Question 10

Question
Which of the following commands will provide locale-specific information about a system and its environment?
Answer
  • A. loconfig
  • B. getlocale
  • C. locale
  • D. tzconfig
  • E. tzselect

Question 11

Question
Which of the following should the permission settings be for /etc/passwd and /etc/shadow?
Answer
  • A. /etc/passwd: -rw-r–r– /etc/shadow: -r——–
  • B. /etc/passwd: -r——– /etc/shadow: -rw-r–r–
  • C. /etc/passwd: -rw-r–r– /etc/shadow: -rw-r–r–
  • D. /etc/passwd: -r——– /etc/shadow: -r——–}

Question 12

Question
Suppose that the command netstat -a hangs for a long time without producing output. An administrator might suspect:
Answer
  • A. a problem with NFS
  • B. a problem with DNS
  • C. a problem with NIS
  • D. a problem with routing
  • E. that the netstat daemon has crashed

Question 13

Question
Which of the following describes the Linux ping packet or datagram?
Answer
  • A. IP packet with a packet type
  • B. ICMP packet with a message type
  • C. ICMP packet with a payload
  • D. UDP datagram with a protocol type
  • E. UDP datagram with a payload

Question 14

Question
Which of the following commands would an administrator use to create an OpenSSH authentication key?
Answer
  • A. sshd
  • B. ssh-agent
  • C. ssh-keygen
  • D. ssh-add

Question 15

Question
Which of the following Class B IPv4 networks are reserved by IANA for private address assignment and private routing? (Select TWO).
Answer
  • A. 128.0.0.0
  • B. 169.16.0.0
  • C. 169.254.0.0
  • D. 172.16.0.0
  • E. 172.20.0.0

Question 16

Question
The [blank_start]UDP[blank_end] IP protocol is connectionless and unreliable? (Please enter only a single answer and do not enter duplicate answers in this field.)
Answer
  • UDP

Question 17

Question
Which of the following commands can be used to activate a specific network interface?
Answer
  • A. ipup
  • B. net
  • C. ifup
  • D. netup

Question 18

Question
What are the three sets of permissions for a file?
Answer
  • A. user, group, others
  • B. administrator, group, others
  • C. user, standard user, others
  • D. administrator, standard user, others

Question 19

Question
Which of the following commands will create an archive file, named backup.tar, containing all the files from the directory /home?
Answer
  • A. tar /home backup.tar
  • B. tar -cf /home backup.tar
  • C. tar -xf /home backup.tar
  • D. tar -xf backup.tar /home
  • E. tar -cf backup.tar /home

Question 20

Question
What command would you use to get comprehensive documentation about any command in Linux?
Answer
  • A. help command
  • B. echo command
  • C. locate command
  • D. man command
  • E. get command

Question 21

Question
Which command will display running process information in real time?
Answer
  • A. top
  • B. show current
  • C. ps current
  • D. process

Question 22

Question
What is the command to change the password of a user?
Answer
  • A. wpasswd
  • B. gpasswd
  • C. epasswd
  • D. passwd
  • E. password

Question 23

Question
With which command can you determine the time of the last restart of a system?
Answer
  • A. current reboottime
  • B. find reboot
  • C. expect –reboot
  • D. last | reboot
  • E. last reboot
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