QUESTION 481 CORRECT TEXT
The _________ command is used to send ICMP ECHO_REQUEST packets to other hosts over the network.
Which of the following lines would you find in the file /etc/nsswitch.conf?
A. order hosts,bind
B. 192.168.168.4 dns-server
C. hosts: files dns
D. domain mycompany.com
Which of the following lines would you expect to see in the file /etc/protocols?
A. in.tftpd: LOCAL
B. tftp dgram udp wait root /usr/sbin/tcpd in.tftpd
C. tftp 69/udp
D. udp 17 UDP
In the following command and its output, echo $$ 12942 what is 12942?
A. the process ID of the echo command
B. the process ID of the current shell
C. the process ID of the last command executed
D. the process ID of the last backgrounded command
To test a shell script called myscript, the environment variable FOOB
A. must be removed temporarily. How can this be done?
A. unset -v FOOBAR
B. set -a FOOBAR=””
C. env -u FOOBAR myscript
D. env -i FOOBAR myscript
Which of the following is the best way to list all defined shell variables?
C. env -a
D. echo $ENV
After rebooting a machine with a recompiled new kernel and its modules a lot of “Can’t locate module” errors appear on screen. Which of the following is most likely to be the source of the problem?
A. make modules_install wasn’t executed.
B. make modules install wasn’t executed.
C. The kernel wasn’t configured to use modules.
D. This kernel version does not support modules.
E. depmod wasn’t run before rebooting.
How can you list the parameters that you can use on an specific module?
A. modinfo -p
B. modinfo -list
D. modprobe -p
E. cat /etc/modules.conf
Which of the following commands can be used to customize all kernel compilation options?
A. make config
B. make menuconfig
C. make xconfig
D. make kernelconfig
E. make configure
Answer: A, B, C
Which of the following find commands will print out a list of suid root files in /usr?
A. find /usr -uid 0 -perm +4000
B. find -user root +mode +s /usr
C. find -type suid -username root -d /usr
D. find /usr -ls \*s\* -u root
E. find /usr -suid -perm +4000
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