What should be done after updating the configuration file for syslogd in order to make the changes become effective? (Choose TWO correct answers.)
Which /etc/hosts.allow entries will permit access to sshd for users from the 192.168.1.0/24 subnet? (Choose TWO correct answers.)
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
On a Linux node with multiple active networks interfaces, each having a default route to the Internet, which default route is preferred?
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.)
On a server running the 3.4.50-11 Linux kernel, which file in the /boot directory contains the kernel configuration parameters?
After installing a compiled kernel, it can not find any modules that are needed to be loaded. What make target was likely missed while installing the kernel?
What are the options to node.startup in the iscsid.conf file? (Choose TWO correct answers.)
What command is used to make an exact copy, at a single point in time, of a logical volume for backup purposes?
A server requires a GRUB2 boot option which will always boot to runlevel 1. Which line of a GRUB2 configuration file starts the beginning of the settings needed to make this new choice available?
Please enter the complete path to the main SysV init process configuration file.
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.)
In the following output, what percentage of time was the CPU waiting for pending I/O?
# vmstat 1 100
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 282120 134108 5797012 0 0 0 2 0 0 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 359 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1117 577 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 366 0 0 100 0
When is historical data of resource usage important? (Select THREE correct answers.)
In the following output from top, which processes contribute to the percentage of time that the CPU spends in the state of wa?
Tasks: 193 total, 1 running, 190 sleeping, 2 stopped, 0 zombie
Cpu(s): 0.5%us, 0.3%sy, 0.0%ni, 98.2%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st
What keyword is missing in the following line from /etc/fstab in order to make a USB flash device writeable by the user fred when mounted:
/dev/sda1 /mnt/usbflash vfat defaults,users,______=fred,umask=022, 0 0
(Provide the option name only without any settings)
After a lot of write operations, the administrator want to ensure that the kernel flushes the file system buffers to disk. Which command will accomplish this? (Specify ONLY the command without any path or parameters.)
Where would fsck put any unreferenced file or file fragments on a ext4 filesystem?