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質問 1：
You can schedule jobs to be executed by cron in several ways. Which directories are used for scripts that are to be executed at regular intervals? (Choose 2.)
A. /etc/crontabs/
B. /etc/cron.daily/
C. /var/spool/cron/tabs/
D. /etc/cron.d/
正解：B,D
質問 2：
You want to copy the master boot record, the partition table, and the 2 magic bytes at the beginning of /dev/had to a file so you can restore it later. Which command accomplishes this?
A. dd of=/dev/zero if=/dev/hda bs=512 count=1
B. dd if=mbr of=/dev/hda bs=512 count=1
C. dd if=/dev/hda of=mbr bs=512 count=1
D. dd if=/dev/urandom of=/dev/hda bs=512 count=1
正解：C
質問 3：
Suppose you change from your current runlevel 5 to the new runlevel 3. Which statement is correct?
A. Nothing will happen at all.
B. If there is a K* link for a certain service in /etc/init.d/rc5.d/ but no corresponding S* link I /etc/init.d/rc3.d/, nothing will happen.
C. If there is no K* link for a certain service in /etc/init.d/rc5.d/ but there is an S* link in /etc/init.d/rc3.d/, the service is started.
D. If there is a K* link for a certain service in /etc/init.d/rc5.d/ and there is an S* link in /etc/init.d/rc3.d/, the service is stopped and started again.
正解：C
質問 4：
You have a test directory with the following permissions: rwx------ You want to change the permissions to the following values: r-xr-xr-x. Which command accomplishes this?
A. chmod 777 test
B. chmod u+w,g+rx,o+rx test
C. chmod u-w,g+rx,o+rx test
D. chmod u=rx,a-rx test
正解：C
質問 5：
What is the purpose of the ssh-agent command?
A. ssh-agent is a program that helps configure the ssh daemon.
B. ssh-agent is used to fetch public keys from machines within your network.
C. ssh-agent is a program that checks for machines in the network that have an ssh daemon running.
D. ssh-agent is used to avoid typing the passphrase for your key on each login.
正解：D
質問 6：
You would like to run command1 and then command2, whether or not command1 completed successfully. Which command accomplishes this task?
A. command1 ; command2
B. command1 > command2
C. command1 & command2
D. command1 | command2
正解：A
You can schedule jobs to be executed by cron in several ways. Which directories are used for scripts that are to be executed at regular intervals? (Choose 2.)
A. /etc/crontabs/
B. /etc/cron.daily/
C. /var/spool/cron/tabs/
D. /etc/cron.d/
正解：B,D
質問 2：
You want to copy the master boot record, the partition table, and the 2 magic bytes at the beginning of /dev/had to a file so you can restore it later. Which command accomplishes this?
A. dd of=/dev/zero if=/dev/hda bs=512 count=1
B. dd if=mbr of=/dev/hda bs=512 count=1
C. dd if=/dev/hda of=mbr bs=512 count=1
D. dd if=/dev/urandom of=/dev/hda bs=512 count=1
正解：C
質問 3：
Suppose you change from your current runlevel 5 to the new runlevel 3. Which statement is correct?
A. Nothing will happen at all.
B. If there is a K* link for a certain service in /etc/init.d/rc5.d/ but no corresponding S* link I /etc/init.d/rc3.d/, nothing will happen.
C. If there is no K* link for a certain service in /etc/init.d/rc5.d/ but there is an S* link in /etc/init.d/rc3.d/, the service is started.
D. If there is a K* link for a certain service in /etc/init.d/rc5.d/ and there is an S* link in /etc/init.d/rc3.d/, the service is stopped and started again.
正解：C
質問 4：
You have a test directory with the following permissions: rwx------ You want to change the permissions to the following values: r-xr-xr-x. Which command accomplishes this?
A. chmod 777 test
B. chmod u+w,g+rx,o+rx test
C. chmod u-w,g+rx,o+rx test
D. chmod u=rx,a-rx test
正解：C
質問 5：
What is the purpose of the ssh-agent command?
A. ssh-agent is a program that helps configure the ssh daemon.
B. ssh-agent is used to fetch public keys from machines within your network.
C. ssh-agent is a program that checks for machines in the network that have an ssh daemon running.
D. ssh-agent is used to avoid typing the passphrase for your key on each login.
正解：D
質問 6：
You would like to run command1 and then command2, whether or not command1 completed successfully. Which command accomplishes this task?
A. command1 ; command2
B. command1 > command2
C. command1 & command2
D. command1 | command2
正解：A
朝比** -
問題集を買いました、入り口の入り口である基本的なところまで説明してありとても解りやすいと思いました、買ってよかったです。すごくいいです。050-720に合格できました。