201-450 Exam Questions

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,...

Which of the following is a side effect of extensive usage of swap space?

In the below example output, which columns detail the percent of time the CPU spent running non- kernel code and the percent of time the CPU spent running kernel code? (Choose TWO...

In this example output, which descriptions match the purpose of the free, buff and cache columns? (Choose THREE correct answers.) # vmstat 1 100 procs -------memory-------swap---io...

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...

In the following output, what is the 5 minute load average for the system? # uptime 12:10:05 up 18 days, 19:00, 2 users, load averagE. 0.47, 24.71, 35.31

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

In the following output, the load averages represent the system load averages for what time frames? # uptime 12:10:05 up 18 days, 19:00, 2 users, load averagE. 0.47, 24.71, 35.31

Which of the following commands will provide the PIDs of the processes sorted by which are using the most CPU cycles on the Linux system?

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

When planning a web server which of the following choices will impact system sizing? (Choose THREE correct answers.)

When is historical data of resource usage important? (Select THREE correct answers.)

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

What is a key difference between a zImage and bzImage kernel image?

Which of the following command sequences can be used to extract files contained in a initramfs file (/boot/initramfs) which is used by the kernel at boot time?

On a server running the 3.4.50-11 Linux kernel, which file in the /boot directory contains the kernel configuration parameters?

Which archive format is used to create an initramfs image?

How can the kernel parameter for the maximum size of the shared memory segment (shmmax) be changed to 2GB (2147483648 Bytes) on a running system? (Choose TWO correct answers.)

What happens if the Linux kernel can't mount the root filesystem when booting?

What is the correct parameter to pass to the kernel at boot time to force it to use only one of the available processors?

What information does the file modules.dep provide?

Which commands are used to load modules into the Linux kernel? (Choose TWO correct answers.)

What is the purpose of the command udevadm monitor?

Which option to the update-rc.d command will cause the removal of all symlinks to /etc/rcX.d/*test2 even when the script /etc/init.d/test2 still exists?

If all of the following files and/or symlinks exist in a SysV-init runlevel directory, which of the following will be executed first when booting the system directly into the runle...

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?

After changing the default runlevel in the SysV-init configuration file, the system boots in a different than intended runlevel. Where else could this different runlevel be defined...

Why is the root file system mounted read-only during boot and remounted with write permission later on?

During booting, when the Linux kernel loads an initramfs file, which command from the initramfs will be executed first, if present?

In case the file containing the Linux kernel is lost, what happens when the system is booting?

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.)

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 ch...

Where is the LILO boot loader code typically installed on a system with only a single Linux installation and no other operating systems?

Which command is used to install a new LILO boot loader?

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.)

Due to extreme system use, a Linux system requires some additional swap space. To initialize 5GB of additional swap space, which combination of commands should be used?

What does a 0 in the last field (fsck order) of /etc/fstab indicate about the filesystem?

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

How can the label root be added to the ext2 filesystem on /dev/sda1?

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

What is the minimum number of disks required in a fully redundant RAID5 array?

Which file in /proc contains information on the status of local software RAID devices?

Which single command will simulate a failed device within a RAID 5 array?

Which RAID level value must be used with Linux software RAID in order to create an array of mirrored devices?

Which of the following commands is used to set up a RAID volume?

The IDE hard drive /dev/hda does not have DMA enabled. Which command must be run to enable DMA on it?

A system has one hard disk and one CD writer which are both connected to SATA controllers. Which device represents the CD writer?

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

What is the purpose of the command vgextend?

Which two LVM commands are missing from the following sequence which is used to create a logical volume and make use of it on a Linux system? pvcreate, ___________, __________, mkf...