050-733 SUSE Certified Linux Administrator 12 Questions and Answers

The SUID should only be set when really needed and only on applications that are well tested.

The SUID bit has no security implications.

The SUID bit makes it more difficult to exploit any potential vulnerabilities in the program.

The SUID bit on executables has no effect; it is only relevant when set on directories.

ls >> ls-output

ls ; ls-output

ls && ls-output

Is > ls-output

~/.ssh/known_hosts

~/.ssh/id_rsA.pub

~/.ssh/authorized_keys

~/.ssh/id_dsA.pub

Symbolic links can point to files on a different file system.

Symbolic links can be created for directories.

Symbolic links always have the same size as the original file.

type determines the type of a command (shell builtin, alias, file on hard disk).

type is used to determine the type of processor used (32-bit, 64-bit, Power)

type displays the type of terminal (tty1, tty2) you are logged in to.

type is used to print text to a teletypewriter.

SUSE Linux Enterprise Development

SUSE Linux Enterprise Desktop

SUSE Linux Enterprise Drive

SUSE Linux Enterprise Distribution

The netdate command and the ntpd use the same port

The Network Time Protocol uses port 123, TCP

A Stratum 16 server is one that sets it's time by some external reference clock, such as an atomic clock.

NTP aims at correcting the system time without sudden bigger changes.

/etc/clock.conf is the NTP daemon configuration file.

info

hardwarechk

hwcheck

hwinfo

sysinfo

it includes the etc/HOSTNAME file in the /tmp/backup.tgz archive.

it extracts the etc/HOSTNAME file from the /tmp/backup.tgz archive.

it displays a line similar to the following, but otherwise does nothing:

-rw-r--r--- riit/root 23 2005-03-11 14:20 etc/HOSTNAME

it produces an error message because the options are in the wrong sequence.

ssh mytext da20.digitalairlines.com:/tmp

scp da20.digitalairlines.com:/tmp mytext

scp mytext da20.digitalairlines.com:/tmp

sftp mytext da20.digitalairlines.com:/tmp

command1 ;; command2

command1 || command2

command1 >> command2

command1 && command2

static or dhcp

master or slave

onboot, ifpluged, or manual

ethernet, wireless, or manual