03 September, 2020

All About Downloadable 201-450 Free Question

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Total 161 questions Full Exam Access

Question 1

In capacity planning exercises, which tools assist in listing and identifying processes of interest? (Choose TWO correct answers.)

acpid

lsof

pstree

telinit

Question 2

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.
Solution:
dig, time dig, time host, time nslookup

Does this meet the goal?

Yes

Question 3

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.

Question 4

Which command will report information on memory usage, paging and block input/output?

free

memshow

top

vmstat

Question 5

What should be done to ensure a client machine uses the recursive nameserver running on the IP address 192.168.1.1 ? (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.

Question 6

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

sadf

sarcron

Question 7

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

Question 8

The correct command sequence to create and mount logical volumes on a Linux system is:

lvcreate, pvcreate, vgcreate, mkfs, mount

pvcreate, vgcreate, lvcreate, mkfs, mount

vgcreate, lvcreate, pvcreate, mount, mkfs

mkfs, pvcreate, vgcreate, lvcreate, mount

pvcreate, lvcreate, vgcreate, mkfs, mount

Question 9

Which of the following is a CD-ROM filesystem standard?

OSI9660

ISO9660

SR0FS

ISO8859

ROM-EO

Question 10

Which files are updated as devices are mounted and unmounted to provide information on the currently
mounted devices and the options used? (Choose TWO correct answers.)

/proc/dtab

/etc/mtab

/etc/fstab

/proc/mounts

/proc/devices

Question 11

A Linux server is running in single user mode for regular maintenance. Which commands are used to restore the server to its usual runlevel? (Choose TWO correct answers.)

telinit 0

shutdown -r now

sync

shutdown -h now

reboot

Question 12

A system with SysV-init has a service installed called apache2. Which file controls the start and stop of this service and is referenced by the various runlevel directories?

/etc/init.d/apache2

/etc/rc2.d/70apache2

/etc/rc2.d/apache2

/etc/rc2.d/apache2.start

Question 13

The following is an excerpt from the output of tcpdump -nli eth1 'udp': 13:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.53: 43653+ A? lpi.org. (25)
13:03:17.598624 IP 192.168.5.112.53 > 192.168.123.5.1065: 43653 1/0/0 A 198.51.100.42 (41)
Which network service or protocol was used?

FTP

HTTP

SSH

DNS

DHCP

Question 14

Which directory contains the system-specific udev rule files? (Specify the absolute path including the directory name)
Solution:
/etc/udev/rules.d, /etc/udev/rules.d/

Does this meet the goal?

Yes

Question 15

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

Question 16

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

LoadModule

Module

Plugin

LoadPlugin

Question 17

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

Question 18

Which commands below are useful to collect data about remote filesystem connections? (Choose TWO correct answers.)

pidstat

nfsiostat

sadf

cifsiostat

Question 19

Which of the following terms are used to describe 3.x kernel releases? (Choose TWO correct answers.)

beta

final

longterm

prerelease

stable

Question 20

Which of the following is a CD-ROM filesystem standard?

OSI9660

ISO9660

SR0FS

ISO8859

ROM-EO

Question 21

What information does the file modules.dep provide?

A list of all modules, compiled or not, that are available to the kernel.

A list of modules trusted by the installed kernel.

A list of devices and their module name.

A list of all compiled modules and their dependencies.

A list of modules the kernel needs to run.

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Total 161 questions Full Exam Access