testking comptia linux xk0-002 exam

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Linux+ Certification Exam(2004 Objectives) : xk0-002 Exam CompTIA Linux+: Linux+
XK0-002 Exam : Linux+
Q & A with Explanations* $87.99 $79.99
Study Guide $21.99 $19.99

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*Q & A with Explanations included

CompTIA Linux+
CompTIA Linux+ Certification

CompTIA Linux+ is a vendor-neutral certification, generic across distributions, that validates the knowledge of individuals with a minimum of six to twelve months of practical Linux experience. Professionals holding the CompTIA Linux+ credential can explain fundamental management of Linux systems from the command line, demonstrate knowledge of user administration, understand file permissions, software configurations, and management of Linux-based clients, server systems and security.

vcexport DISPLAY=local:0.0
C. from the local system:
export DISPLAY=remote:0.0
D. from the remote system:
export DISPLAY=remote:0.0

Answer: D

Explanation: First Local host should give the permission to display the X Terminal on
local host using xhost command. Then user can export the display from remote host.
See the example
Suppose you want to run application on Certkiller B from Certkiller A.
Certkiller B in GUI Terminal:# xhost +192.168.0.1
Certkiller A in GUI Terminal:# export DISPLAY=192.168.0.2:0
# xterm &
Now Terminal of Certkiller A will display on Certkiller B
QUESTION 3
Which of the following commands can be used to confirm that the FTP server is
listening?
A. netstat -a ftp
B. netstat | grep ftp
C. netstat -u | grep ftp
D. netstat -a | grep ftp

Answer: D

Explanation: netstat is the multipurpose command, it can list active network
connections, routing tables, interface statistics and other vital network information.
Syntax: netstat [options]
Options are
-a à List listening and connected sockets
-t à List TCP connection
-u à List UDP Connection
-p à Show PID and name of the program.
QUESTION 4
When a RAID 5 array is configured with a hot-spare disk under Linux, which of the
following is the minimum number of drives required?

A. 2
B. 3
C. 4
D. 5

Answer: C

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Explanation:
RAID 5 is the most common type of RAID. By distributing parity information across
some or all of an array’s member disk drives, RAID 5 eliminates the write bottleneck of
using one parity disk.
The minimum requirements for RAID 5 is 3 disks. According to questions, 3 disks for
RAID Level 5 and one spare disk so total 4.
QUESTION 5
A system administrator wants to see if an RPM package is installed on a user
workstation. Which of the following commands should be used?

A. rpm -query <filename>
B. rpmfind <name of package>
C. rpm -qa | grep <name of package>
D. find -name rpm | grep <filename>

Answer: C
Explanation: RPM format packages can manage using rpm command. to query the
package either installed or not,
rpm -q packagename
To list all installed package:
rpm -qa packagename
QUESTION 6
Which of the following can be used to determine who has scheduled a job?

A. who
B. whodo
C. at -d
D. at -l

Answer: B

QUESTION 7
Which of the following encryption schemes is the LEAST secure?

A. DES
B. MD5
C. AES
D. Blowfish

Answer: A
The Data Encryption Standard, a block cipher with 64-bit blocks and a 56-bit key
Like MD4, it produces a 128-bit hash. For details see RFC 1321
AES ciphers use a 128-bit block and 128, 192 or 256-bit keys
A block cipher using 64-bit blocks and keys of up to 448 bits

QUESTION 8
A Linux machine has a local address of 192.168.1.1 with subnet mask of
255.255.255.0. All services are currently denied. Which of the following lines should
be appended to hosts.allow file to permit access to the Web service on the local
subnet.

A. httpd: 192.168.1.0/24
B. ALL: 192.168.1.255/24
C. ALL except httpd: 192.168.1.1/24
D. 192.168.1.255/255.255.255.0:httpd

Answer: A
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