101-500 무료 덤프문제 온라인 액세스

What is true regarding the statement beginning with #! that is found in the first line of a script? (Choose TWO correct answers.)

• A.It triggers the installation of the scripts interpreter
• B.It specifies the path and the arguments of the interpreter used to run the script
• C.It defines the character encoding of the script
• D.It prevents the script from being executed until the \ is removed
• E.It is a comment that is ignored by the script interpreter

Which of the following commands sets the system's time zone to the Canadian Eastern Time?

• A.tzconf /etc/localtime
• B.ln -sf /usr/share/zoneinfo/Canada/Eastern /etc/localtime
• C.sysctl -w clock.tz='Canada/Eastern'
• D.localegen -t -f /usr/share/zoneinfo/Canada/Eastern > /etc/locale.tz
• E.modprobe tz_ca_est

Which type of filesystem is created by mkfs when it is executed with the block device name only and without any additional parameters?

• A.VFAT
• B.ext3
• C.ext2
• D.ext4
• E.XFS

Which of the following commands redirects the output of ls to standard error?

• A.ls |error
• B.ls >>2
• C.ls >&2
• D.ls >-1
• E.ls <<ERR

Which of the following apt-get subcommands installs the newest versions of all currently installed packages?

• A.dist-upgrade
• B.update
• C.auto-update
• D.install
• E.full-upgrade