Renovate 117-201 torrent Guide

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Q31. What script is included with the kernel source to patch a kernel?

A. patch

B. patch-kernel

C. apply-patch

D. update-kernel

Answer: B



It is possible to patch a kernel to the newest Linux kernel version as opposed to downloading the entire source code.

This choice can be beneficial for those who are not using a high-speed broadband connection. (A typical compressed kernel source file is nearly 30MB for a download time of about 10 minutes on a S12Kb DSL connection; adjust accordingly for your connection.) Whether you are patching existing sources or downloading the full source, the end results will be identical.

Patching the kernel is not a mindless task. It requires the user to retrieve all patches from her current version to the version she wants to upgrade to. For example, if you are currently running 2.6.1 (and have those sources) and want to upgrade to 2.6.8, you must retrieve the 2.6.2 and 2.6.3 patch sets, and so on. Once downloaded, these patches must be applied in succession to upgrade to 2.6.8. This is more tedious than downloading the entire source, but useful for those who keep up with kernel hacking and want to perform incremental upgrades to keep their Linux kernel as up-to-date as possible.

To patch up to several versions in a single operation, you can use the patch-kernel script located in the kernel source directory for the kernel version you currently use. This script applies all necessary version patches to bring your kernel up to the latest version.

The format for using the patch-kernel script looks like this:

patch-kernel source_dir patch_dir stopversion

Q32. Which of the following best describes the format of the /etc/fstab file?

A. mount point; device name; filesystem type; mount options; dump filesystem; fsck order

B. device name; mount point; filesystem type; mount options; dump filesystem; fsck order

C. mount point; filesystem type; device name; mount options; dump filesystem; fsck order

D. device name; mount point; mount options; filesystem type; dump filessystem; fsck order

E. device name; filesystem type; mount point; mount options; dump filesystem; fsck order

Answer: B


From the man pages:

The first field, (fs_spec}, describes the block special device or remote filesystem to be mounted.

The second field, (fs_file}, describes the mount point for the filesystem. For swap partitions, this field should be specified as 'none'.

The third field, (fs_vfstype}, describes the type of the filesystem.

The fourth field, (fs_mntops}, describes the mount options associated with the filesystem.

The fifth field, (fs_freq}, is used for these filesystems by the dump(8} command to determine which filesystems need to be dumped.

The sixth field, (fs_passno}, is used by the fsck(8} program to determine the order in which filesystem checks are done at reboot time.

Q33. Which tool can be used to control the runtime behavior of udev?

A. udev

B. udevctl

C. udevadm

D. udevconfig

E. udevclient

Answer: C


From the man pages:

udevadm - udev management tool

udevadm expects a command and command specific options. It controls the runtime behavior of udev,  requests kernel events, manages the event queue, and provides simple debugging mechanisms.

Q34. Following the instructions contained in the README file of an application, the make command was executed but the following message was displayed on the screen:

Make: *** No targets specified and no makefile found. Stop.

Which are the TWO possible causes for this problem?

A. The make command is being executed in the wrong location.

B. The user has no write permission to the Makefile, so he cannot execute the make command correctly.

C. The make command was executed in the right place but the command to generate the Makefile was not properly executed.

D. The make command is not installed in the system.

E. The development libraries needed by make are not installed on the system.

Answer: A, C 

Q35. On a system with separate partitions for /, /usr, /var, /tmp, which filesystem[s] can safely be mounted readonly?

A. /var, /usr

B. /var

C. /usr, /, /tmp

D. /usr

E. /tmp

Answer: D


/tmp and /var both need to be written to. /usr is the most static of the directories (excluding /usr/local}

Q36. Which ONE of the following wireless tools can be used to check the wireless network link quality?

A. iwconfig

B. iwlink

C. iwscan

D. iwifi

Answer: A