201-450 Lpi Free Practice Test

Posted by: Pdfprep Category: Lpi Online Questions Tags: 201-450 Online Questions Post Date: February 8, 2021

Pdfprep2021-02-08T03:03:51+00:00

Many IT professionals are finding it hard to pass the Lpi 201-450 exam. It’s a challenging task, but that alone should not make you not showcase your skills. It would be best if you considered getting yourself a solid 201-450 prep questions to enable you to pass the 201-450 exam. Pdfprep offers the best Lpi 201-450 prep questions that have been carefully crafted to resemble the LPIC-2 Exam 201, Part 1 of 2, version 4.5 exam. If you use the Pdfprep 201-450 prep questions, you get the assurance of success in your first trial of the Lpi exam.

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1. The following is an excerpt from the output of tcpdump -nli eth1:

13:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.21: Flags [.], ack 1 (truncated)

13:03:17.598624 IP 192.168.5.112.21 > 192.168.123.5.1065: Flags [P.], seq (truncated)

Which network service or protocol was used?

FTP

HTTP

SSH

DNS

DHCP

2. Running tcpdump -nli eth1 'tcp' shows the following output:

14:41:53.694538 IP 10.1.52.145.51738 > 24.215.7.162.143: Flags [.], ack 33051, win 1002, options [nop,nop,TS val 36789130 ecr 1746004159], length 0

What is the source IP address of this packet? (Please specify the answer in digits and dots ONLY.)

3. Which of the following commands can be used to script interactions with various TCP or UDP services?

ftp

tcpdump

strings

wget

4. A correctly formatted entry has been added to /etc/hosts.deny to prevent certain clients from connecting to a service but this is having no effect.

What could be the cause of this? (Choose TWO correct answers.)

tcpd needs to be sent the HUP signal.

The service needs to be restarted.

The machine needs to be restarted.

There is a conflicting entry in /etc/hosts.allow.

The service does not support tcpwrapper.

5. Which /etc/hosts.allow entries will permit access to sshd for users from the 192.168.1.0/24 subnet? (Choose TWO correct answers.)

sshd : 192.168.1.

sshd : 192.168.1

sshd : 192.168.1.0 netmask 255.255.255.0

sshd : 192.168.1.0/255.255.255.0

sshd : 192.168.1.0

6. A network client has an ethernet interface (eth0) configured with an IP address in the subnet 192.168.0.0/24. This subnet has a router, with the IP address 192.168.0.1, that connects this subnet to the Internet.

What needs to be done on the client to enable it to use the router as its default gateway? (Choose TWO correct answers.)

route add default gw 192.168.0.1 eth0

ifconfig eth0 defaultroute 192.168.0.1

ip route add default via 192.168.0.1 dev eth0

echo defaultroute 192.168.0.1 >> /etc/resolv.conf

route add defaultgw=192.168.0.1 if=eth0

7. What should be done to ensure a client machine uses the recursive nameserver running on the IP address 192.168.0.1? (Choose TWO correct answers.)

Add nameserver 192.168.0.1 to /etc/resolv.conf.

Run route add nameserver 192.168.0.1.

Run ifconfig eth0 nameserver 192.168.0.1.

Ensure that the dns service is listed in the hosts entry in the /etc/nsswitch.conf file.

Run bind add nameserver 192.168.0.1.

8. The users of the local network complain that name resolution is not fast enough. Enter the command, without the path or any options, that shows the time taken to resolve a DNS query.

9. What should be done after updating the configuration file for syslogd in order to make the changes become effective? (Choose TWO correct answers.)

No action is required, syslogd will notice the updated configuration file after a few minutes.

Send the HUP signal to the syslogd process.

Restart the syslogd service.

Run the command syslogd -u.

10. What does the -p3 option to the patch command do?

It will strip off path information from each file mentioned in the patch file up to and including the third / character.

patch continues execution as long as there are three or fewer errors.

It instructs patch to look up to three lines of context before or after the declared line in the original file for a match.

patch will keep three previous versions of each file in the output to prevent loss of change history.

It instructs patch to conform more strictly to the POSIX standard.

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11. When a makefile is included in a source code package, what are commonly defined targets in the file?

CFLAGS, CPPFLAGS, LIBS, LDFLAGS

clean, install, uninstall

PATHS, DESTDIR, LIBS, LDFLAGS

prefix, exec_prefix, bindir, mandir

12. Which of the following files will be looked for and used by GNU make, if one of them exists, unless a different file is specified on the command line when trying to compile software from source code? (Choose TWO correct answers.)

configure

config.h.in

makefile

Makefile

Makefile.in

13. A regular user, joe, has just run:

./configure && make && make install

to build and install a program.

However, the installation fails.

What could be done to install the program? (Choose TWO correct answers.)

Install the binaries manually with suinstall.

Run make install with root privileges.

Do not run ./configure in order to maintain the default configuration for correct installation.

Rerun ./configure with a --prefix option where the user has permissions to write.

Run make install_local to install into /usr/local/.

14. Which of the following commands will securely copy the directory ./fyf/ to /var/tmp/ on the remote host deltaur using the remote user account kevin?

rsync -a -e ssh kevin@deltaur:/var/tmp/ fyf/

rsync -a -u kevin -e ssh fyf/ deltaur:/var/tmp/

rsync -a -u kevin -e ssh deltaur:/var/tmp/ fyf/

rsync -a -e ssh fyf/ kevin@deltaur:/var/tmp/

15. What is the device name for the first SCSI tape drive on a system when used without automatic rewinding after each write operation? (Please specify the full path to the device.)

16. Which of the following are common backup systems used in Linux? (Choose TWO correct answers.)

Amanda

Bacula

DrBackup

BREWBackup

SARcheck

17. Which of the following commands will erase the contents of the /dev/sdb3 partition?

rm /dev/sdb3

dd if=/dev/zero of=/dev/sdb3

dd of=/dev/zero if=/dev/sdb3

umount /dev/sdb3

18. Which file contains the text message that is displayed after logging into the console? (Specify the full name of the file, including path.)

19. Which file contains the message that is displayed above the login prompt of the system console? (Specify the full name of the file, including path.)

20. What mechanism does collectd use to gather monitoring information on systems?

It uses a library of plugins.

A master server connects to a collectd service on each machine to retrieve the information.

It collects its own information on each server and sends that to a master server.

It makes SNMP queries to the clients being monitored.

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21. What option in the collectd configuration file is required in order to define what to start monitoring?

LoadModule

Module

Plugin

LoadPlugin

22. How is the source code for the main Linux kernel modules distributed?

It is included with the Linux kernel source code.

The kernel modules are downloaded on demand as they are used during compilation.

The kernel modules have their own release cycle and can be maintained separately from the Linux kernel source.

It is provided as a separate download alongside the Linux kernel source code of the same version.

23. What is the functionality that PXE provides?

The ability to boot a computer using its network interface.

The ability to launch an remote X11 desktop on a computer.

The ability to verify a system's configuration after completing the boot process.

The ability to verify a system's configuration before completing the boot process.

24. What are the main network services used by the PXE protocol? (Choose TWO correct answers.)

DNS

DHCP

HTTP

TFTP

NFS

25. What is the purpose of the smartd daemon?

It is a user space daemon used for reading smart cards and integrated circuit chips.

It attempts to automatically repair file systems upon a failed file system check.

It monitors process activity and helps the kernel decide which processes to kill when the kernel overcommits.

It monitors certain disk drives and attempts to predict when they will fail.

26. What component of a system does smartd monitor?

CPU

RAM

Hard drives

Ethernet traffic

27. Which of the following are common Linux filesystem types used for root partitions? (Choose THREE correct answers.)

ext4

VFAT

NTFS

XFS

Btrfs

28. Where would fsck put any unreferenced file or file fragments on a ext4 filesystem?

recover

lost+found

back

lost

29. What is the main template file used by autofs?

default.maps

auto.conf

auto.master

autofs.master

30. The main configuration file for autofs has this entry:

/home /etc/auto.home

What is the meaning of the /etc/auto.home file?

It has the indirect maps for the mounting of file systems.

It has configuration information, such as passwords and keys, for the remote file server.

It has configuration information on settings for the /home mount point.

It is the holds the SSL key to allow authentication to the remote file server.

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31. Which of the following is an example path to a Linux software RAID array?

/dev/raid0

/dev/rd1

/dev/pr0

/dev/md1

32. What mount option must be used in /etc/fstab when mounting an iSCSI target?

_santarget

iscsi

waitiscsi

_netdev

33. What are the options to node.startup in the iscsid.conf file? (Choose TWO correct answers.)

initiate

manual

discover

automatic

34. What command is used to make an exact copy, at a single point in time, of a logical volume for backup purposes?

lvsnap

lvsnapshot

lvcreate

lvcopy

lvclone

35. What action should be performed after increasing the size of a logical volume?

Run vgresize.

Increase the size of the filesystem used for the logical volume.

Run lvresize.

Remount the logical volume.

36. Which command can be used to scan a specified network looking for IP addresses that appear to be in use?

nmap

tcpdump

netscan

hostdiscover

37. Which of the following filter keywords for tcpdump specify the transfer direction for network packets? (Choose TWO correct answers.)

source

src

dest

src or dst

both

38. What is incorrect about these entries in /etc/hosts which could be causing host name lookup problems with host2?

host1 192.168.1.12

host2 192.168.1.12

Two host names are using the same IP address.

The server doing the query is on a different subnet.

The fields are out of order.

host2 is not a fully qualified domain name.

39. Under which of the following circumstances would the command ping output the string (DUP!)?

When the ICMP packets are send to a broadcast address and multiple hosts respond.

When the host being sent ICMP packets is on a different network.

When the router responds to the ICMP packet in addition to the host receiving the ICMP packets.

When the host sending the ICMP packet is the same host as the one receiving the ICMP packets.

40. Which one of these directories should not be backed up?

/backup

/etc

/opt

/proc

/var/log

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41. The following command has just been run successfully:

cd /opt; tar xvf /dev/nst0;

What will happen if the command sequence is run again?

An error saying that there is no tape present is generated because the tape has been ejected after being used.

The contents of /opt will be restored again.

The entire contents of /opt will be replaced with the contents of the next file on the tape.

The contents of /opt will have additional content added from the next file on the tape.

42. In order to gather performance data with sar over a longer period of time, which command should be run periodically from cron?

sa1

sarmon

sarec 77

sadf

sarcron

43. In which directory tree are files modified when changing kernel parameters using the command sysctl?

/sys/kernel/

/proc/kernel/

/proc/sys/

/lib/sys/

/sys/proc/

44. What information is found in the following excerpt from the file /proc/mdstat? (Choose two.)

One of the disks in /dev/md0 has failed and a spare disk is used to recreate full redundancy

The spare disk /dev/sda1 is used to restore full redundancy after the current recovery

The information [UU_] means, that the raid is missing one disk and is not fully redundant

The device is using version 1.2 metadata to allow LILO and GRUB Legacy to use /dev/md0 as the boot partition. This would not have been necessary with GRUB2

The information [3/2] means that 3 RAID disks belong to the array and 2 disks are spare. Together they equal the number of available disks

45. Which command is used to make an exact copy, at a single point in time, of a logical volume while still allowing the original logical volume to be updated?

lvcclone

lvcreate

lvm2

lvsnap

lvsnapshot

46. Which of the following commands shows capabilities and usable frequencies for the wireless interface wlan0?

iw phy pyh0 info

iw dev wlan0 info

iw dev wlan0 show

iw phy wlan0 show

iw phy0 show

47. What effect does the -f option to the update-rc.d command have on files in the /etc/rcX.d/ and /etc/init.d/ directories?

It will force the removal of the symlinks in /etc/rc

d/ even when the links are read only

It will remove both the symlinks in /etc/rc

d/ and the init script in /etc/init.d/

It will remove the init script in /etc/init.d/ and the symlinks in /etc/rc

d/ and update the package information of installed files

It will force the removal of symlinks in /etc/rc

d/ even if the corresponding init script still exists in /etc/init.d/

48. Which of the following commands lists IPv4 addresses and MAC addresses of network nodes that the local system has seen on its directly connected IP networks?

arp

ifconfig

ipadm

iwlist

49. Which of the following commands restores only those files containing lpi in their name from the archive lpifiles.tar.gz?

tar xvzf lpifiles.tar.gz --wildcards `*lpi*'

tar xvzwf lpifiles.tar.gz `*lpi*'

tar -xvfz lpifiles.tar.gz --deep `*lpi*'

tar -xvzf lpifiles.tar.gz --subdirs `*lpi*'

tar xvzf lpifiles.tar.gz --globbing `*lpi*'

50. Which sub command to crypsetup shows information about an encrypted LUKS partition?

luksDump

luksInfo

luksDebug

luksLS

luksShow

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51. In the output of sar -b, what does tps stand for?

Terrabyte per second

Traffic per second

Transfers per second

Total data per second

Terrabit per second

52. Which of the following properties should be recorded in order to monitor the quality of a network link? (Choose two.)

Bandwidth in both directions

Number of nodes using the link

Effective Latency

Number of IPv4 and IPv6 packets

Number of used TCP ports

53. A web application server contains 64GB of RAM and two swap partitions on normal hard disk drives, each with a size of 64 GB. Within the last month, the average number of user sessions on this server has grown by 20 percent. At the same time, the average usage of RAM increased from 65 to 75 percent, while the swap space is almost not used at all. It is expected that the number of user sessions will continue to increase by about 15 to 20 percent each month.

Which of the following reactions would be appropriate in response to these observations? (Choose two.)

Delay any hardware upgrade until there is a significant consumption of swap space to ensure an efficient usage of the available hardware

Create a RAID 1 device on the two swap partitions to avoid data loss in case swap space has to be used in the future

Consider the installation of an additional application server to distribute the load if the expected growth continues over several months

Move the web application's scripts and content a ram disk in order to ensure fast access and to avoid the need for swap space

Update the hardware to increase the amount of available RAM to avoid using swap space

54. Which of the following commands displays the physical path of the kernel module named dummy?

modprobe i dummy

modinfo n dummy

modpath v dummy

depmod n dummy

modshow p dummy

55. Which command is used to install a GRUB boot loader into the master boot record?

grub-install

grub-mkconfig

grub-install-mbr

grub-glue-mbr

grub-mbr-setup

56. After manually compiling and installing a new kernel, what has to be done regarding the initramfs?

To initramfs is independent of the kernel and should not be modified unless the hardware configuration of the machine has changed

Since the initramfs contains kernel modules, a new initramfs must be built for the new kernel

During the compilation of the Linux kernel, a new initramfs is built automatically. The new initramfs only needs to be installed

The system should be restarted since the initramfs reconfigures itself for the new kernel during the startup of the system

57. Which of the following is a userspace application used to modify EFI entries on a Linux system?

efieditor

configefi

efimanager

efibootmgr

efibootedit

58. On a Linux node with multiple active networks interfaces, each having a default route to the Internet, which default route is preferred?

The default route with the highest metric value

The default route with the highest MTU value

The default route with the lowest TTL value

The default route with the highest TTL value

The default route with the lowest metric value

59. Which of the following commands creates a Btrfs subvolume named volume in/mnt?

btrfs subvolume add -n volume /mnt

btrfs create subvolume /mnt volume

btrfs-subvolume create /mnt/volume

btrfs subvolume new volume /mnt

btrfs subvolume create /mnt/volume

60. Which of the filter keywords below could be used in the following command:

tcpdump i eth0 ____________ 203.0.113.8 (Choose three.)

host

src

dst

ipv6

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61. Which of the following commands adds a static IPv6 address to the network interface eth0?

ip add addr 2001:db8::1337/64 dev eth0

ip -6 add addr 2001:db8::1337/64 dev eth0

ip addr add 2001:db8::1337/64 dev eth0

ip -6 addr add 2001:db8::1337/64 dev eth0

ip addr add -6 2001:db8::1337/64 dev eth0

62. A Linux server running systemd booted to rescue.target for maintenance.

Which commands are used to restore the server to its usual target? (Choose two.)

telinit 0

systemctl default

sync

systemctl emergency

systemctl reboot

63. What is the purpose of an initramfs during the Linux system start?

It loads required modules and starts sub sytems like LVM to make the root file system accessible to the kernel

It moves the kernel from normal system memory to initram memory to speed up kernel access

It copies the root file system's content to RAM to speed up the system and reduce writes to disk

It creates a ram disk to store volatile data for directories like /tmp to reduce writes to disk

64. Which of the following commands erases the contents of the /dev/sdb3 partition?

rm /dev/sdb3

dd if=/dev/zero of=/dev/sdb3

dd of=/dev/zero if=/dev/sdb3

umount /dev/sdb3

65. Which of the following configuration files are used by tcpwrapper?

/etc/tcpd.allow and etc/tcpd.deny

/etc/tcpwrapper.allow and /etc/tcpwrapper.deny

/etc/hosts.allow and /etc/hosts.deny

/etc/service.allow and /etc/service.deny

66. What is the purpose of a system mount unit?

It is used by the command systemd-mount and allows users to mount partitions to mount points of their choice

It is used only to mount network file systems to local mount points. It cannot be used for local media

It is created by the command systemd-fstab-generator to integrate entries from /etc/fstab into the system boot process

It is used by the command mount when using system to mount and unmount file systems

67. After the downloading patch-4.6.4.xz from http://kernel.org, what are the next steps to prepare the build of a version 4.6.4 Linux kernel? (Choose two.)

Uncompress the file and move the resulting directory to /usr/src/linux

Apply the patch file to the kernel source directory containing kernel version 4.6.0

Apply the patch file to the kernel source directory containing kernel version 4.6.3

Uncompress the file using xz to get the uncompressed patch file

Use patch to apply the uncompressed patch file to the source directory of any previous kernel version

68. Which of the following init systems comes along with an own UEFI boot loader?

systemd

SysVinit

Upstart

OpenRC

launchd

69. What command discards unused blocks on a mounted file system in order to support SSD devices? (Specify ONLY the command without any path or parameters.)

70. What command ensures that the file systems are written to disk after a lot of write operations? (Specify ONLY the command without any path or parameters.)

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71. Which directory contains system-specific systemd unit files? (Specify the full path to the directory.)

72. Which is the main configuration file for the SystemV init process? (Specify the full name of the file, including path.)

73. What command is used to send messages to all users currently logged in? (Specify ONLY the command without any path or parameters.)

74. What command must be used to create an ext3 file-system?

mkext3fs

mkjfs

mke3fs

mke2fs

mkext2fs

75. What needs to be done to enable 32 bit I/O transfer mode for (E)IDE disks, on a system running a 2.4 series Linux kernel?

The Linux kernel must be recompiled.

The sysctl utility must be used.

The hdparm utility must be used.

This feature isn't supported in 2.4 series kernels.

This feature is enabled by default in 2.4 series kernels

76. DNSSEC is used for?

Encrypted DNS queries between nameservers.

Cryptographic authentication of DNS zones.

Secondary DNS queries for local zones.

Defining a secure DNS section.

Querying a secure DNS section.

77. Which of these commands allows you to use shared libraries that are in /usr/local/lib?

export LD_PRELOAD=/usr/local/lib

export LD_LIBRARY_PATH=/usr/local/lib

ldconfig /usr/local/lib

ldd /usr/local/lib

78. Which TWO archiving formats are used to create an initramfs image?

gzip

tar

rar

cpio

bzip2

79. After unpacking the source code for a Linux kernel, what is the first make command that should be run which will delete any current configuration and all generated files?

This command will ensure that no inappropriate files were left in the kernel archive by the maintainer.

make depend

make distclean

make config

make clean

make mrproper

80. Which script, in the linux/scripts directory, can be used to add up grades or updated code to the 2.6.xx kernel source code?

patch

patch-kernel

kernel-update

upgrade-kernel

upgrade

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81. What tool can you use to print shared library dependencies?

ldconfig

ldd

libdep

libpath

ldev

82. Which of the following commands will copy one disk partition /dev/sda3 to /dev/sdb3?

dd if=/dev/sdb3 of =/dev/sda3 bs=4096 conv=notrunc

dd if=/dev/sda3 of=/dev/sdb3 bs=4096 conv=notrunc

dd --input /dev/sda3 --output /dev/sdb3 bs=4096 conv=notrunc

dd --input /dev/sdb3 --output /dev/sda3 bs=4096 conv=notrunc

83. After unpacking source code, what file is used by configure to create a final Makefile?

configure.in

configure.ac

Makefile.in

Makefile.tmpl

84. User Joseph has successfully extracted and compiled a program from source code. Installing the binaries produces errors.

What is the most likely reason?

The source code was compiled for a different CPU

The permissions set in the /usr/bin directory are wrong

The binaries require root privileges to be installed

The wrong prefix was used during configuration of the source code

85. You have finished updating and resolving dependencies for some source code.

What command should you run before recompiling the code into binary form?

make clean

make all

make dep

make install

86. How can you manually add an entry to your system's ARP cache?

Directly edit /etc/arp-cache

Run add-arp hostname FF:FF:FF:FF:FF:FF

Run ping -a hostname

Run arp -s hostname FF:FF:FF:FF:FF:FF

Edit arp.conf and restart arpd

87. You find that a host (192.168.1.4) being used on one of your client's networks has been compromised with a backdoor program listening on port 31337.

Your client requests a list of originating IP addresses connecting to that port.

Using a Linux workstation as traffic analyzer, which of the following commands would gather the data requested by the client?

tcpdump host 192.168.1.4 and port 31337 -w out

nmap host 192.168.1.4:31337

arpwatch -n 192.168.1.4/32 -p 31337 > capture

pcap -d 192.168.1.4:31337

ipwatch --syn 192.168.1.4 -p 31337 --1og=out

88. Which tool can be used to control the runtime behavior of udev?

udev

udevctl

udevadm

udevconfig

udevclient

89. Which of the following entries are NOT valid in /etc/raidtab?

superblock-persistent

chunk-size

nr-spare-disks

nr-raid-disks

90. A pre-compiled module has been moved to /lib/modules/<kernel-version>, but 'modprobe -a <module-name>' fails to load it.

What needs to be done to enable usage of this module?

make modules_install must be run.

depmod must be run.

The kernel must be re-compiled.

modules.conf or modprobe.conf must be edited.

The system must be rebooted.

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91. Which of the following commands should be used in a bash script that needs a variable containing the IP address of the eth0 interface?

The output for the command ifconfig eth0 is shown below:

eth0 Link encap:Ethernet HWaddr 00:0C:29:CB:FA:30

inet addr:192.168.246.11 Bcast:192.168.246.255 Mask:255.255.255.0 UP BROADCAST

RUNNING MULTICAST MTU:1500 Metric:1

RX packets:4721 errors:0 dropped:0 overruns:0 frame:0 TX packets:3216 errors:0

dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000

RX bytes:445184 (434.7 Kb) TX bytes:512968 (500.9 Kb) Interrupt:185 Base address:0x1080

IP=LANG= ifconfig eth0 | awk '{ print $2 }' | cut -f2

IP=`LANG= ifconfig eth0 | grep inet | cut -d: -f2 | awk { print $1 }`

IP=`LANG= ifconfig eth0 | awk '{ print $3 }'`

IP=$(LANG= ifconfig eth0 | grep inet | awk '{ print $2 }' | cut -d: -f2)

IP=$(LANG= ifconfig eth0 | grep inet | cut -d: -f2)

92. You have elected to use the automounter and the autofs script.

Your /etc/auto.master file contains the following:

/home /etc/auto.home

/project /etc/auto.project

/data yp:data.map

If you change the contents of /etc/auto.project to include a new source path what must be done to access the new path?

Shutdown and restart the local NFS client daemons

Run fsck on the affected mount point

Issue the /etc/init.d/autofs reload command

Add the newly mapped path to/etc/fstab

Nothing Simply access the newly mapped resource

93. In order to find all library dependencies of /usr/bin/foo, which of the following statement is true?

Running ldconfig against /usr/bin/foo will show the required libraries

Running ldd against /usr/bin/foo will show the required libraries

It's necessary to compile the program again to check the library dependencies of foo.

The ls -la command has to be run in the /usr/bin directory, to show all library dependencies of foo.

Library dependencies are shown in the /usr/lib directory.

94. How can DMA be enabled for the device /dev/hda?

echo "1" >/proc/ide/hda/dma

sysctl -w dev.ide.dma=1

dma add /dev/hda

hdparm -d 1 /dev/hda

insmod dma dev=/dev/hda

95. To restore the kernel source to the previous, unpatched, version, which of the following commands could be used?

patch --restore

patch --remove

patch -U

patch --undo

patch -R

96. If the current directory is /root and the kernel source is located in /usr/src/linux, which of the following commands should be used to apply the patch /tmp/foopatch?

cat /tmp/foopatch | patch -p0

cd/usr/src/linux; cat/tmp/foopatch | patch -p0

cd/usr/src/linux; cat/tmp/foopatch | patch

cd/usr/src/linux; patch -p1 </tmp/foopatch

cd/usr/src/linux; patch -p1 >/tmp/foopatch

97. A 2.6.9-ac1 kernel would be

an alpha kernel.

someone's patch to a stable kernel.

a stable kernel.

an unstable kernel.

someone's patch to an unstable kernel.

98. What command should be used to find out what PCI devices can be seen, without querying the

kernel?

lspci -v

lspci -s

lspci -x

lspci -b

lspci -p

99. Considering that a 2.4 series Linux kernel is being used, which kernel module must be loaded to enable CD burning with an IDE CD writer?

ide-cd

ide-cdrw

ide-cdb

ide-scsi

None of the above

100. What command must be used to create an ext3 filesystem?

mke2fs

mkext2fs

mke3fs

mkext3fs

mkjfs

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101. The Linux kernel is loaded successfully by the boot loader.

However, straight after the kernel mounts the root filesystem, the boot process stops and an error message regarding init is shown.

Which of the following actions is the best one to be used in order to identify and fix the problem?

The administrator reboots the system with a recovery disk and checks the root file system for errors with fsck.

The administrator reboots the system with a recovery disk and restores from a backup.

The administrator reboots the system and tells the kernel, through the boot loader prompt, to use /bin/bash as the initial process.

The administrator reboots the system with a recovery disk and installs a new kernel.

The administrator reboots the system and tells init, through the boot loader prompt, to use a different runlevel.

102. A machine is running in single user mode and, as such, not all file-systems are accessible.

What command must be run to make all of the other file-systems listed in /etc/fstab accessible?

mount --all

mountfs --all

mountfs -a

mount -a

103. What command is used to force a file-system check, when rebooting?

reboot-f

shutdown -f now

shutdown -c -r now

fsck -r

shutdown -F -r now

104. What command can be used on an existing (formatted) partition, to configure the interval between disk checks when mounting partitions?

mke2fs

e2fsck

e2fsckconfig

config2fs

tune2fs

105. 168.192.in-addr.arpa. 600 IN NS linuserv.example.net.

;; ADDITIONAL SECTION:

linuserv.example.net. 600 IN A 192.168.123.5

What might be wrong in the zone definition?

Nothing. All seems to be good.

There's no "." after linuserv.example.net in the PTR record in the forward lookup zone file.

There's no "." after linuserv in the PTR record in the forward lookup zone file.

There's no "." after linuserv.example.net in the PTR record in the reverse lookup zone file.

The "." in the NS definition in reverse lookup zone has to be removed.

106. Which of the following commands will securely copy the directory ./fyf/ to /var/tmp/ on the remote host deltaur using the remote user account kevin?

rsync -a -e ssh kevin@deltaur:/var/tmp/ fyf/

rsync -a -u kevin -e ssh fyf/ deltaur:/var/tmp/

rsync -a -u kevin -e ssh deltaur:/var/tmp/ fyf/

rsync -a -e ssh fyf/ kevin@deltaur:/var/tmp/

107. Journalling doesn't appear to be working on an ext3 file-system.

When booting, the following line appears:

VFS: Mounted root (ext2 filesystem) read only.

What could be causing the problem?

An old version of e2fsprogs is installed.

The kernel does not contain ext3 support.

The file-system is specified as ext2 in/etc/fstab.

The system was not shut down cleanly.

108. Your routing configuration relies on eth0 being a 3com card that requires the 3c59x module.

What line must be added to modules configuration file, to ensure that eth0 always uses this module?

eth0=3c59x

alias eth0=3c59x

alias eth0 3c59x

set eth0 3c59x

set eth0=3c59x

109. What backup arrangement should be used for an intranet web server the contents of which is updated fairly regularly by different staff?

Daily incremental backups with a weekly full backup tape sent off- site

Monthly full backups with the tape sent off-site

Daily full backups with all tapes sent off-site

Weekly full backups with all tapes sent off-site

Daily full backups with one tape sent off-site per week

110. During which stage of the boot process would this message be seen?

Ide0: BM-DMA at 0xff00-0xff07, BIOS settings: hda: DMA, hdb: DMA

Boot loader start and hand off to kernel

Kernel loading

Hardware initialization and setup

Daemon initialization and setup

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111. Which of the following commands can be used to access the content of a ramdisk file (/boot/initrd) used by the kernel at boot time?

mount /boot/initrd /mnt/ -0 loop; cat /mnt

mkintird -d /boot/initrd; mount /boot/initrd /mnt/ -o loop

cp /boot/initrd /tmp/initrd.gz; mount /tmp/initrd /mnt/ -o loop

cp /boot/initrd /tmp/initrd.gz; gunzip initrd.gz; mount /tmp/initrd /mnt/ -o loop

cp /boot/initrd /tmp/initrd.gz; gunzip initrd.gz; mount /tmp/initrd /mnt/

112. A BIND server should be upgraded to use TSIG.

Which configuration parameters should be added, if the server should use the algorithm hmac-md5 and the key skrKc4DoTzi/tAkllPi7JZA== ?

TSIG server.example.com. algorithm hmac-md5; secret "skrKc4DoTzi/tAkllPi7JZA=="; };

key server.example.com. { algorithm hmac-md5; secret skrKc4DoTzi/tAkllPi7JZA==; };

key server.example.com. { algorithm hmac-md5; secret "skrKc4DoTzi/tAkllPi7JZA=="; };

key server.example.com. { algorithm=hmac-md5; secret="skrKc4DoTzi/tAkllPi7JZA=="; };

key server.example.com. { algorithm hmac-md5 secret "skrKc4DoTzi/tAkI1Pi7JZA==" };

113. Which of the following sentences is true for the shown BIND9 configuration?

options {

directory "/var/named";

allow-query { any; };

allow-recursion {127.0.0.1; 10.0.0.0/24; };

forwarders {192.168.0.4; };

forward first;

};

zone"." {

type hint;

file "named.ca";

};

Any host, from any network, may use this server as its main DNS server.

If the server doesn't know the answer to a query, it sends a recursive query to 192.168.0.4.

If the server doesn't know the answer to a query, it sends a query to a root DNS server.

Hosts in the network 10.0.0.0/24 will be able to ask for zone transfers.

If the server doesn't know the answer to a query, it sends a recursive query to 192.168.0.4 and, if this fails, it returns a failure.

114. What is a significant difference between host and zone keys generated by dnssec-keygen?

There is no difference.

Zone key files contain a public and private key.

Host keys files contain a public and private key.

Host keys must always be generated if DNSSEC is used; zone keys are optional

Zone keys must always be generated if DNSSEC is used; host keys are optional

115. A system is running out of swap space. To initialise 5GB of additional swap space, which combination of commands should be used?

dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon /tmp/swapfile

dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swap on /tmp/swapfile

dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; mount /tmp/swapfile

touch -5G /tmp/swapfile; swapon /tmp/swapfile

mkswap /tmp/swapfile 512000; swapon /tmp/swapfile

116. Hundreds of people log in to a server from remote locations per day.

Which of the following commands show remote SSH, FTP & telnet sessions for a particular day?

cat /var/log/messages | grep "'date "+%b %e"'" | egrep '(telnet|ssh|ftp)'

cat /var/log/messages | egrep '(telnet|ssh|ftp)'

cat /var/log/messages | grep "`date "+%b %e"`" | grep -E '(telnet|ssh|ftp)'

cat /var/log/messages | date | egrep '(telnet|ssh|ftp)'

cat /var/log/messages > grep "'date "+%b %e"'" > egrep '(telnetsshftp)'

117. What command is used to mount a floppy disk image under /mnt/floppy?

mount -1 root.img /mnt/floppy

mount --loop root.img /mnt/floppy

mount root.img /mnt/floppy

mount root.img

mount -o loop root.img /mnt/floppy

118. What information can be found in the log file specified by the status parameter in OpenVPN's server.conf? (Select TWO correct answers)

Errors and warnings generated by the openvpn daemon

Routing information

Statistical information regarding the currently running openvpn daemon

A list of currently connected clients

A history of all clients who have connected at some point

119. After changing the default runlevel in the init configuration file, the system boots in a different than the intended runlevel.

Where else could be this different runlevel be defined?

Nowhere. The init configuration file wasn't properly modified

In the boot loader configuration file

In /etc/ runlevel under default

In the initrd image file

In the /etc/rc.d/rc.local file

120. A BIND server should never answer queries from certain networks or hosts.

Which configuration directive could be used for this purpose?

deny-query { ...; };

no-answer { ...; };

deny-answer { ...; };

deny-access { ...; };

blackhole { ...; };

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121. What is the purpose of a PTR record?

To provide name to IP resolution.

To provide IP to name resolution.

To direct email to a specific host.

To provide additional host information.

To direct clients to another nameserver.

122. What directive can be used in named.conf to restrict zone transfers to the 192.168.1.0/24 network?

allow-transfer { 192.168.1.0/24; };

allow-transfer { 192.168.1.0-192.168.1.0.255; };

allow-axfr { 192.168.1.0/24; };

allow-xfer { 192.168.1.0/24; };

123. To securely use dynamic DNS updates, the use of TSIG is recommended.

Which TWO statements about TSIG are true?

TSIG is used for zone data encryption

TSIG is a signal to start a zone update

TSIG is used in zone files

TSIG is used only in server configuration

Servers using TSIG must be in sync (time zone!)

124. Which THREE statements concerning automounter are true?

The autofs service does not need to be restarted after changing automounter map files

Only one entry in master map can refer to each map file

The automounter service does not rely on the kernel configuration

For each entry in auto.master, a separate automounter daemon is started

Changes to auto.master require automounter to reload its configuration

125. What are typical targets in a makefile?

CFLAGS, CPPFLAGS, LIBS, LDFLAGS

clean, install, uninstall

PATHS, DESTDIR, LIBS, LDFLAGS

prefix, exec_prefix, bindir, mandir

126. Which single command will extract data from the file abc.tar.bz2

bunzip2

tar

gzip

gunzip

127. How would you run named inside a chroot jail as user nobody and group nogroup?

Add "user nobody; group nogroup; chroot /var/named/root" to named.conf

named runs as nobody/nogroup by default, so just invoke it as "name --chroot /var/named/root"

Use /usr/bin/chroot after running "chown nobody.nogroup named"

Invoke named as "named -t /var/named/root -u nobody"

128. Where should the LILO code reside, on a system with only one installation of Linux and no other operating systems?

In the master boot record

In the boot sector

In the /boot directory

At the start of the kernel

129. The Human Interface Device (HID) is being used, which of the following represents a USB mouse connected to the PC?

/dev/psaux

/dev/ttyS0

/dev/input/mice

/dev/usb/mouse0

/dev/ttyUSB0

130. Select the TWO correct alternatives regarding the kill -9 command:

Its use should be avoided and other alternatives should be tried before it.

Its use can occasionally cause the data loss.

It is possible that zombie processes can be created as a consequence of its use.

It can always be used with no restrictions.

Its frequent use can increase the RAM utilization.

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131. The server has two network cards. The driver for the first card is the module 8139too and the driver for the second card is the module ne2k-pci.

How is it possible to ensure that the card using the 8139too driver is detected before the card using the ne2k-pci driver?

modprobe 8139too dev=eth0; modprobe ne2k-pci dev=eth1

install mod 8139too; install mod ne2k-pci

modprobe eth0=8139too, eth1=ne2k-pci

ifconfig modadd eth0=8139too, eth1=ne2k-pci

modprobe 8139too; modprobe ne2k-pci

132. Which of these would be the simplest way to configure BIND to return a different version number to queries?

Compile BIND with the option -blur-version=my version.

Set version-string "my version" in BIND's configuration file.

Set version "my version" in BIND's configuration file.

Set version=my version in BIND's configuration file.

Set version-bind "my version" in BIND's configuration file.

133. An administrator has placed an executable in the directory /etc/init.d, however it is not being executed when the system boots into runlevel 2.

What is the most likely cause of this?

The script has not been declared in /etc/services

runlevel 2 is not declared in /etc/inittab

The script has the permissions 700 and is owned by root

A corresponding link was not created in /etc/rc2.d

134. In order to generate a pair of asymmetric keys to use during an SSH connection, please choose the correct command to use?

ssh-keygen -t dsa

ssh-agent

sshd

ssh-agent -t dsa

ssh-keyscan -t dsa

135. Consider the following output from df -i:

Filesystem Inodes IUsed IFree IUse% Mounted on

/dev/md0 1966080 45044 1921036 3% /

none 125731 712 125019 1% /dev

none 127729 1 127728 1% /dev/shm

none 127729 17 127712 1% /var/run

none 127729 2 127727 1% /var/lock

none 1966080 45044 1921036 3% /var/lib/ureadahead/debugfs

/dev/sde1 0 0 0 - /mnt

What filesystem does /dev/sde1 most likely use?

ext2

ext3

reiserfs

xfs

136. Why shouldn't you use the options -z and -j when using tar with a magnetic tape backup?

In case of damaged tape uncompressed tar archives may allow partial recovery of the backup

Standard Linux compression software and hardware compresion in the tape drive will cause bigger files on the tapes.

Standard Linux compression software won't be able to write to sequential tape media.

Backup and restore performance will be better if we don't introduce the compression delay into the process

The tape drive hardware-based compression achieves higher compression rates than either gzip or bzip2 software based compression.

137. Using only commands included with named, what is the command, with options or parameters, to make named re-read its zone files?

138. Which file contains configuration data for automount? Please enter the complete path.

139. On a system with separate partitions for /, /usr, /var & /tmp, which filesystem can safely be mounted read-only?

140. Which mount option must be used in the example /etc/fstab entry below, to ensure that a specific filesystem is not mounted when the system is booted?

/dev/hdd /media/cdrom iso9660 _____________________,ro 0 0

Page 15 of 15

141. With which command can the reserved blocks on /dev/hda1 be displayed? (Enter the command with all parameters and/or options)

142. After a lot of write operations, the changes should be written to the disk.

Please enter the appropriate command, without the path or any options or parameters, that would achieve this.

143. What is the correct parameter to pass to the kernel at boot time to force it to use only one of the available processors?

144. Consider the following /etc/fstab file:

/dev/hda1 swap swap defaults 0 0

/dev/hda2 / ext2 defaults 1 1

/dev/hda3 /home ext2 defaults 1 2

none /proc proc defaults 0 0

/dev/fd0 /media/floppy vfat user,noauto 0 0

What command can an ordinary (non-root) user use to mount a floppy disk in this system? (Please enter the command with all parameters and/or options)

145. How can the label root be added to the ext2 file-system on /dev/sda1?

Please enter the command with all parameter(s) and/or option(s):

146. How can a journal added, non-destructively, to the ext2 file-system on /dev/dg/lv05?

Please enter the command with all parameter(s):

147. You want to change the file that contains the message which is used at the login prompt when users log in locally. Please enter the file including the path.

148. Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.)

201-450 Lpi Free Practice Test

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