117-101 #20

*117-101

*. You've downloaded an image file of a boot floppy disk to your hard drive. What is the best utility to

create a boot floppy from the disk image? (Specify a single command without options.)

Answer: dd /bin/dd

*. In which directory must definition files be placed to add additional repositories to yum?

Answer: /etc/yum.repos.d /etc/yum.repos.d/yum.repos.d yum.repos.d/

*. The file myfile.txt contains the following data:

joe:x:100:100:Joe:/home/joe:/bin/bash

mike:x:101:101:Mike:/home/mike:/bin/sh

kevin:x:102:102:Kevin:/home/kevin:/bin/sh

matt:x:103:103:Matt:/home/matt:/bin/sh

What output will be displayed on the screen when the following command is executed:

grep o home myfile.txt

A. No output will be displayed on the screen

B. home

home

home

home

C. /home/joe

/home/mike

/home/Kevin

/home/matt

D. joe

mike

Kevin

matt

Answer: B

*. Which TWO runlevels should never be declared as the default runlevel?

A. 0

B. 3

C. 5

D. 6

Answer: AD

*. What does the command mount a do?

A. It mounts the floppy disk for all users.

B. It shows all mounted file systems.

C. It opens /etc/fstab to edit.

D. It mounts all file systems listed in /etc/fstab.

Answer: D

*. After modifying LILO's configuration file, what command should you run for the changes to take effect?

A. kill HUP `pidof lilo`

B. liloinstall

C. lilo

D. reboot

Answer: C

*. After modifying GRUB's configuration file, what command should you run for the changes to take

effect?

A. kill HUP `pidof grub`

B. grubinstall

C. grub

D. no action is required

Answer: D

*. In GRUB's configuration file you find the line root (hd1,4)

What is corresponding device name on a Linux system?

A. /dev/hda4

B. /dev/hda5

C. /dev/hdb4

D. /dev/hdb5

Answer: D

*. Which configuration file should be modified to disable the ctrlaltdelete key combination?

A. /etc/keys

B. /proc/keys

C. /etc/inittab

D. /proc/inittab

E. /etc/reboot

Answer: C

*. You are trying to make a hard link to an ordinary file but ln returns an error. Which of the following

could cause this?

A. The source file is hidden.

B. The source file is readonly.

C. The source file is a shell script.

D. You do not own the source file.

E. The source and the target are on different filesystems.

Answer: E

*. You have read/write permission on an ordinary file foo. You have just run ln foo bar. What would

happen if you ran rm foo?

A. foo and bar would both be removed.

B. foo would be removed while bar would remain accessible.

C. foo would be removed. bar would still exist but would be unusable.

D. Both foo and bar would remain accessible.

E. You would be asked whether bar should be removed.

Answer: B

*. You wish to kill a process with a PID of 123. Select the command which will allow the process to

"clean up" before exiting.

A. kill 1 123

B. kill 9 123

C. kill 15 123

D. kill 17 123

Answer: C

*. What is the default process priority when a process is started using the nice command?

A. 10

B. 10

C. 20

D. 0

Answer: B

*. You are formatting a single hard disk for a Linux install. What is the maximum number of primary

partitions you can create?

Answer: 4 four

*. In order to append the output of ls to a file called bazz, which of the following command lines would

you use?

A. ls > bazz

B. ls >& bazz

C. ls &> bazz

D. ls >> bazz

Answer: D

*. What command line redirection characters instruct the shell to read from the current input source until

a specific word, on a separate line and without and trailing spaces, is reached?

A. <<

B. <|

C. !<

D. &<

Answer: A

*. What information is displayed by the command cat /proc/dma?

A. whether DMA is enabled

B. which DMA channels are in use

C. which DMA mode is in use

D. general information about DMA on the machine

Answer: B

*. What file contains kernel level logging information such as output from a network driver module when

it is loaded?

Answer: /var/log/messages messages kern.log /var/log/kern.log

*. To what environment variable will you assign or append a value if you need to tell the dynamic linker

to look in a build directory for some of a program's shared libraries?

A. LD_LOAD_PATH

B. LD_LIB_PATH

C. LD_LIBRARY_PATH

D. LD_SHARE_PATH

E. LD_RUN_PATH

Answer: C

*. Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel?

Answer: cmdline /proc/cmdline