201-450 Exam Questions
269 real 201-450 exam questions with expert-verified answers and explanations. Page 1 of 6.
- Question #1
What command must be used to create an ext3 file-system?
- Question #2
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?
- Question #3
DNSSEC is used for?
- Question #4
Which of these commands allows you to use shared libraries that are in /usr/local/lib?
- Question #5
Which TWO archiving formats are used to create an initramfs image?
- Question #6
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 comm...
- Question #7
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?
- Question #8
What tool can you use to print shared library dependencies?
- Question #9
Which of the following commands will copy one disk partition /dev/sda3 to /dev/sdb3?
- Question #10
After unpacking source code, what file is used by configure to create a final Makefile?
- Question #11
User Joseph has successfully extracted and compiled a program from source code. Installing the binaries produces errors. What is the most likely reason?
- Question #12
You have finished updating and resolving dependencies for some source code. What command should you run before recompiling the code into binary form?
- Question #13
How can you manually add an entry to your system's ARP cache?
- Question #14
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...
- Question #15
Which tool can be used to control the runtime behavior of udev?
- Question #16
Which of the following entries are NOT valid in /etc/raidtab?
- Question #17
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?
- Question #18
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 s...
- Question #19
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...
- Question #20
In order to find all library dependencies of /usr/bin/foo, which of the following statement is true?
- Question #21
How can DMA be enabled for the device /dev/hda?
- Question #22
To restore the kernel source to the previous, unpatched, version, which of the following commands could be used?
- Question #23
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?
- Question #24
A 2.6.9-ac1 kernel would be
- Question #25
What command should be used to find out what PCI devices can be seen, without querying the kernel?
- Question #26
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?
- Question #27
What command must be used to create an ext3 filesystem?
- Question #28
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 ini...
- Question #29
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 acce...
- Question #30
What command is used to force a file-system check, when rebooting?
- Question #31
What command can be used on an existing (formatted) partition, to configure the interval between disk checks when mounting partitions?
- Question #32
Performing a DNS lookup with dig results in this answer: ;; question SECTION: ;5.123.168.192.in-addr.arpa. IN PTR ;; ANSWER SECTION: 5.123.168.192.in-addr.arpa. 600 IN PTR linuserv...
- Question #33
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?
- Question #34
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...
- Question #35
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 t...
- Question #36
What backup arrangement should be used for an intranet web server the contents of which is updated fairly regularly by different staff?
- Question #37
During which stage of the boot process would this message be seen? Ide0: BM-DMA at 0xff00-0xff07, BIOS settings: hda:DMA, hdb:DMA
- Question #38
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?
- Question #39
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==...
- Question #40
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; }; forw...
- Question #41
What is a significant difference between host and zone keys generated by dnssec-keygen?
- Question #42
A system is running out of swap space. To initialise 5GB of additional swap space, which combination of commands should be used?
- Question #43
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?
- Question #44
What command is used to mount a floppy disk image under /mnt/floppy?
- Question #45
What information can be found in the log file specified by the status parameter in OpenVPN's server.conf? (Select TWO correct answers)
- Question #46
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 defin...
- Question #47
A BIND server should never answer queries from certain networks or hosts. Which configuration directive could be used for this purpose?
- Question #48
What is the purpose of a PTR record?
- Question #49
What directive can be used in named.conf to restrict zone transfers to the 192.168.1.0/24 network?
- Question #50
To securely use dynamic DNS updates, the use of TSIG is recommended. Which TWO statements about TSIG are true?