3480841
Descripción
Test por Martin Covill, actualizado hace más de 1 año
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Creado por Martin Covill
hace alrededor de 9 años
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Pregunta 1
Pregunta
Which of the following statements would create a default route using a gateway of
192.168.1.1?
Respuesta
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A. netstat -add default gw
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B. route default 192.168.1.1
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C. ip route default 192.168.1.1
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D. route add default gw 192.168.1.1
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E. ifconfig default gw 192.168.1.1 eth0
Pregunta 2
Pregunta
Which of the following is the purpose of the dig command?
Respuesta
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A. To adjust a directory’s hidden permissions
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B. To search for files on the filesystem
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C. To adjust a file’s hidden permissions
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D. To perform hostname lookups
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E. To ping all known hosts on the current subnet
Pregunta 3
Pregunta
Which of the following configuration files does sudo read when determining if a user is
permitted to run applications with root privileges?
Respuesta
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A. /etc/groups
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B. /etc/passwd
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C. /etc/sudoers
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D. /etc/sudo.conf
Pregunta 4
Pregunta
The files in the /etc/skel directory are used by the:
Respuesta
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A. pwconv command
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B. pwunconv command
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C. useradd command
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D. passwd command
Pregunta 5
Pregunta
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.)
Respuesta
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FTP
Pregunta 6
Pregunta
Which of the following statements about crontab are true? (Select TWO).
Respuesta
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A. Every user may have their owncrontab.
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B. Changing a crontab requires a reload/restart of the cron daemon.
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C. The cron daemon reloads crontab files automatically when necessary.
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D. hourly is the same as “0 * * * *”.
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E. A cron daemon must run for each existing crontab.
Pregunta 7
Pregunta
Which of the following commands is used to deactivate a network interface?
Respuesta
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A. ifdown
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B. ipdown
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C. net
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D. netdown
Pregunta 8
Pregunta
Which of the following looks like a correct entry in the /etc/hosts file?
Respuesta
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A. localhost 127.0.0.1 localhost.localdomain
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B. localhost.localdomainlocalhost 127.0.0.1
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C. localhostlocalhost.localdomain 127.0.0.1
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D. 127.0.0.1 localhost.localdomainlocalhost
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E. localhost.localdomain 127.0.0.1 localhost
Pregunta 9
Pregunta
Which of the following lines would an administrator find in the file /etc/resolv.conf?
Respuesta
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A. mycompany.com
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B. 192.168.168.4 dns-server
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C. hosts: files,dns
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D. domain mycompany.com
Pregunta 10
Pregunta
Which of the following commands will provide locale-specific information about a system and its environment?
Respuesta
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A. loconfig
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B. getlocale
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C. locale
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D. tzconfig
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E. tzselect
Pregunta 11
Pregunta
Which of the following should the permission settings be for /etc/passwd and /etc/shadow?
Respuesta
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A. /etc/passwd: -rw-r–r– /etc/shadow: -r——–
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B. /etc/passwd: -r——– /etc/shadow: -rw-r–r–
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C. /etc/passwd: -rw-r–r– /etc/shadow: -rw-r–r–
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D. /etc/passwd: -r——– /etc/shadow: -r——–}
Pregunta 12
Pregunta
Suppose that the command netstat -a hangs for a long time without producing output. An
administrator might suspect:
Respuesta
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A. a problem with NFS
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B. a problem with DNS
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C. a problem with NIS
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D. a problem with routing
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E. that the netstat daemon has crashed
Pregunta 13
Pregunta
Which of the following describes the Linux ping packet or datagram?
Respuesta
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A. IP packet with a packet type
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B. ICMP packet with a message type
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C. ICMP packet with a payload
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D. UDP datagram with a protocol type
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E. UDP datagram with a payload
Pregunta 14
Pregunta
Which of the following commands would an administrator use to create an OpenSSH
authentication key?
Respuesta
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A. sshd
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B. ssh-agent
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C. ssh-keygen
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D. ssh-add
Pregunta 15
Pregunta
Which of the following Class B IPv4 networks are reserved by IANA for private address
assignment and private routing? (Select TWO).
Respuesta
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A. 128.0.0.0
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B. 169.16.0.0
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C. 169.254.0.0
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D. 172.16.0.0
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E. 172.20.0.0
Pregunta 16
Pregunta
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.)
Respuesta
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UDP
Pregunta 17
Pregunta
Which of the following commands can be used to activate a specific network interface?
Respuesta
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A. ipup
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B. net
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C. ifup
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D. netup
Pregunta 18
Pregunta
What are the three sets of permissions for a file?
Respuesta
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A. user, group, others
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B. administrator, group, others
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C. user, standard user, others
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D. administrator, standard user, others
Pregunta 19
Pregunta
Which of the following commands will create an archive file, named backup.tar, containing all the files from the directory /home?
Respuesta
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A. tar /home backup.tar
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B. tar -cf /home backup.tar
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C. tar -xf /home backup.tar
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D. tar -xf backup.tar /home
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E. tar -cf backup.tar /home
Pregunta 20
Pregunta
What command would you use to get comprehensive documentation about any command in Linux?
Respuesta
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A. help command
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B. echo command
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C. locate command
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D. man command
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E. get command
Pregunta 21
Pregunta
Which command will display running process information in real time?
Respuesta
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A. top
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B. show current
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C. ps current
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D. process
Pregunta 22
Pregunta
What is the command to change the password of a user?
Respuesta
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A. wpasswd
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B. gpasswd
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C. epasswd
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D. passwd
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E. password
Pregunta 23
Pregunta
With which command can you determine the time of the last restart of a system?
Respuesta
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A. current reboottime
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B. find reboot
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C. expect –reboot
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D. last | reboot
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E. last reboot
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