201-400 v12

The main configuration file for autofs has this entry: /home /etc/auto.home What is the meaning of the /etc/auto.home file?. It has the indirect maps for the mounting of file systems. It has configuration information, such as passwords and keys, for the remote file server. It has configuration information on settings for the /home mount point. It is the holds the SSL key to allow authentication to the remote file server.

Where would fsck put any unreferenced file or file fragments on a ext4 filesystem?. recover. lost+found. back. lost.

Why is the root file system mounted read-only during boot and remounted with write permission later on?. Because if problems with the root file system are detected during the boot, fsck can be run, without risk of damage. Because this way crackers cannot collect information about root with boot sniffers. To avoid writing to the disk, unless the root password is known. To avoid other operating systems overwriting the Linux root partition. Because the disk has its own write protection that cannot be changed by the operating system.

Which of the following best describes the format of the /etc/fstab file?. device name; filesystem type; mount point; mount options; dump filesystem; fsck order. device name; mount point; filesystem type; mount options; dump filesystem; fsck order. device name; mount point; mount options; filesystem type; dump filesystem; fsck order. mount point; filesystem type; device name; mount options; dump filesystem; fsck order. mount point; device name; filesystem type; mount options; dump filesystem; fsck order.

What happens if the Linux kernel can't mount the root filesystem when booting?. An error message is shown and the administrator is asked by the kernel to specify a valid root filesystem to continue the boot process. An error message is shown and the system reboots after a keypress. An error message is shown and the system boots in maintenance mode. An error message is shown showing which device couldn't be mounted or informing that init couldn't be found. An error message is shown stating that the corresponding kernel module couldn't be loaded.

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.).

Which directory in /dev/disk/ can be used to determine the UUID of a connected hard disk?.

Which of the following is an example path to a Linux software RAID array?. /dev/raid0. /dev/rdl. /dev/pr0. /dev/mdl.

Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.).

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

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?. rsync -a -e ssh kevin@deltaur:/var/tmp/ fyf/. rsync -a -u kevin -e ssh fyf/ deltaur:/var/tmp/. rsync -a -u kevin -e ssh deltaur:/var/tmp/ fyf/. rsync -a -e ssh fyf/ kevin@deltaur:/var/tmp/.

Which one of these directories should not be backed up?. /backup. /etc. /opt. /proc. /var/log.

What is the command to add another IP address (192.168.1.2) to a network interface (ethO) that already has (at least) one IP address in the 192.168.1.0/24 subnet?. ip add addr 192.168.1.2/32 dev eth0. ifconfig eth0 192.168.1.2 netmask 255.255.255.255. ip addr add 192.168.1.2/32 dev eth0. ipconfig eth0 192.168.1.2.

Which file contains the text message that is displayed after logging into the console? (Specify the full name of the file, including path.) cd /opt; tar xvf /dev/nst0;.

Consider the following /etc/fstab file: /dev/hdal swap swap defaults 0 0 /dev/hda2 / ext2 defaults 1 1 /dev/hda3 /home ext2 defaults 1 2 none /proc proc defaults 0 0 /dev/sdbl /media/usb0 vfat user,noauto 0 0 What is one of the possible commands that an ordinary (non-root) user can use to mount the /dev/sdbl partition on the /media/usb0 mount point? (Please enter the command with all parameters and/or options but without any file system type options.) mount /media/usbO/, /bin/mount /media/usb0/.

On a server running the 3.4.50-11 Linux kernel, which file in the /boot directory contains the kernel configuration parameters?. config-linux-3.4.50-11. config-3.4.50-11. system-3.4.50-11. vmlinuz-3.4.50-11. rc .config-3.4.50-11.

What is the main template file used by autofs?. default.maps. auto.cont. auto.master. autofs.master.

Which of the following is a CD-ROM filesystem standard?. OSI9660. ISO9660. SROFS. IS08859. ROM-EO.

Which of the following commands will erase the contents of the /dev/sdb3 partition?. rm /dev/sdb3. dd if=/dev/zero of=/dev/sdb3. dd of=/dev/zero if=/dev/sdb3. umount /dev/sdb3.

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. Processes waiting for user interaction. Processes that were already closed and are waiting to be launched again. Processes that have not been scheduled yet because they haven't been fully loaded into RAM or are in swap. Processes waiting for 10 operations to complete.

According to the tcpdump output below, what is the IP address of the client host? 02:12:40.511381 IP 192.168.246.11.1045 > 192.168.246.1.22: S 3838532429:3838532429(0) win5840 <mss 1460,sackOK,timestamp 31325740,nop,wscale 2> 02:12:40.511540 IP 192.168.246.1.22 > 192.168.246.11.1045: S 1209330085:1209330085(0) ack383853 2430 win 5792 <mss 1460,sackOK,timestamp 11553457 3132574,nop,wscale 0> 02:12:40.511755 IP 192.168.246.11.1045 > 192.168.246.1.22:. ack 1 win 1460 <nop,nop,timestamp 3132574 11553457> 02:12:40.515122 IP 192.168.246.1.22>192.168.246.11.1045: P1:26(25) ack1win 5792 <nop,nop,timestamp 11553460 3132574> 02:12:40.515511 IP 192.168.246.11.1045 > 192.168.246.1.22: . ack 26 win 1460 <nop,nop,timestamp3132578 11553460> 02:12:40.515952 IP 192.168.246.11.1045 > 192.168.246.1.22: P 1:23(22) ack 26 win1460 <nop,nop,timestamp 3132578 11553460>.

The following is an excerpt from the output of tcpdump -nli eth1: 1 3:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.21: Flags[.], ack 1 (truncated) 1 3:03:17.598624 IP 192.168.5.112.21 > 192.168.123.5.1065: Flags [P.], seq (truncated) Which network service or protocol was used?. FTP. HTTP. SSH. DNS. DHCP.

What component of a system does smartd monitor?. CPU. RAM. Hard drives. Ethernet traffic.

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.). Edit /etc/shmmax and set the parameter to 2147483648. sysctl shmmax=2147483648. sysctl kernel.shmmax=2147483648. echo 2147483648 > /proc/sys/kernel/shmmax. export kernel.shmmax=2147483648.

Please enter the complete path to the main SysV init process configuration file.

In the following output, what is the 5 minute load average for the system? # uptime 1 2:10:05 up 18 days, 19:00, 2 users, load average: 0.47, 24.71, 35.31. 0.47. 24.71. 35.31. There is no 5 minute interval. It is some value between 0.47 and 24.71. There is no 5 minute interval. It is some value between 24.71 and 35.31.

Which of the following is a side effect of extensive usage of swap space?. The root filesystem may become full because swap space is always located on the system root partition. The overall system performance may degrade because of heavy hard disk use and memory reorganization. Since processes always exist completely in either RAM or swap, regular RAM may become unused if the kernel does not move processes back from the swap space to memory. The memory may become fragmented and slow down the access to memory pages. However, this can be kept to a minimum by the regular use of memfrag -d. Applications need to restart because their virtual memory addresses change to reflect memory relocation to the swap address area.

Which command is used to unload a single module currently loaded by the kernel without unloading any modules that it depends upon? (Specify the command with or without path information).

What is the purpose of the command vgextend?. Extend a volume group's footprint on disk. Add physical volumes to an existing volume group. Increase the number of days between scheduled error checking. Create a volume group which uses all available space on disk.

Which /etc/hosts .allow entries will permit access to sshd for users from the 192.168.1.0/24 subnet? (Choose TWO correct answers.). sshd: 192.168.1. sshd: 192.168.1. sshd: 192.168.1.0 netmask 255.255.255.0. sshd: 192.168.1.0/255.255.255.0. sshd : 192.168.1.0.

What is the purpose of the smartd daemon?. It is a user space daemon used for reading smart cards and integrated circuit chips. It attempts to automatically repair file systems upon a failed file system check. It monitors process activity and helps the kernel decide which processes to kill when the kernel overcommits. It monitors certain disk drives and attempts to predict when they will fail.

What mount option must be used in /etc/fstab when mounting an iSCSI target?. _santarget. iscsi. waitiscsi. _netdev.

In the below example output, which columns detail the percent of time the CPU spent running nonkernel code and the percent of time the CPU spent running kernel code? (Choose TWO correct answers.) # vmstat 1100 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---r b swpd free b uff 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. id. us. wa. sy.

Which archive format is used to create an initramfs image?. gzip. tar. RAR. cpio. bzip2.

Under which of the following circumstances would the command ping output the string (DUP!)?. When the ICMP packets are send to a broadcast address and multiple hosts respond. When the host being sent ICMP packets is on a different network. When the router responds to the ICMP packet in addition to the host receiving the ICMP packets. When the host sending the ICMP packet is the same host as the one receiving the ICMP packets.

Which single command will simulate a failed device within a RAID 5 array?. mdadm --remove /dev/mdO /dev/sddl. mdadm --zero-superblock /dev/sdf3. mdadm --force-fault /dev/md2 /dev/sde2. mdadm --fail /dev/mdO /dev/sdcl. mdadm /dev/mdO --offline /dev/sdcl.

A regular user, joe, has just run: ./configure && make && make install to build and install a program. However, the installation fails. What could be done to install the program? (Choose TWO correct answers.). Install the binaries manually with suinstall. Run make install with root privileges. Do not run ./configure in order to maintain the default configuration for correct installation. Rerun ./configure with a --prefix option where the user has permissions to write. Run make install_local to install into /usr/local/.

According to the Filesystem Hierarchy Standard (FHS), what is the path to the Linux kernel source and may be a symbolic link to the real Linux source code? (Please specify the full path with no version information .).

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.). /proc/dtab. /etc/mtab. /etc/fstab. /proc/mounts. /proc/devices.

Which commands are used to load modules into the Linux kernel? (Choose TWO correct answers.). insmod. loadmod. kernload. modprobe. probemod.

A network client has an ethernet interface (ethO) configured with an IP address in the subnet 1 92.168.0.0/24. This subnet has a router, with the IP address 192.168.0.1, that connects this subnet to the Internet. What needs to be done on the client to enable it to use the router as its default gateway? (Choose TWO correct answers.). route add default gw 192.168.0.1 eth0. ifconfig eth0 defaultroute 192.168.0.1. ip route add default via 192.168.0.1 dev eth0. echo defaultroute 192.168.0.1 >> /etc/resolv.conf. route add defaultgw=192.168.0.1 if=eth0.

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.). telinit 0. shutdown -r now. sync. shutdown -h now. reboot.

In this example output, which descriptions match the purpose of the free, buff and cache columns? (Choose THREE correct answers.) # vmstat 1100 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---r b swpd free b uff 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. Used swap space. RAM available for filesystem buffers. Available free RAM. RAM used for buffers. RAM used for filesystem cache.

During booting, when the Linux kernel loads an initramfs file, which command from the initramfs will be executed first, if present?. /init. /initrd. /linuxrc. /re.local. /sbin/init.

What are the main network services used by the PXE protocol? (Choose TWO correct answers.). DNS. DHCP. HTTP. TFTP. NFS.

Which of the following files are used to resolve hostnames to IP addresses? (Choose TWO correct answers.). /etc/systems. /etc/hosts. /etc/network. /etc/dns.conf. /etc/resolv.conf.

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?. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; mount /tmp/swapfile. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swapon /tmp/swapfile. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon /tmp/swapfile. touch -SG /tmp/swapfile; swapon /tmp/swapfile. mkswap /tmp/swapfile 512000; swapon /tmp/swapfile.

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?. top. uptime. ps aux. vmstat. freemem.

Which file tells GRUB the paths of the filesystem partitions in both Linux format and in the GRUB syntax? (Specify the file name only with no path information).

The IDE hard drive /dev/hda does not have DMA enabled. Which command must be run to enable DMA on it?. hdparm -d /dev/hda. hdparm --dma /dev/hda. hdparm --dma /dev/hdal. hdparm -d /dev/hdal. hdparm -d 1 /dev/hda.

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/sdal /mnt/usbflash vfat defaults,users, =fred,umask=022, 0 0 (Provide the option name only without any settings).

What should be done to ensure a client machine uses the recursive nameserver running on the IP address 192.168.0.1? (Choose TWO correct answers.). Add nameserver 192.168.0.1 to /etc/resolv.conf. Run route add nameserver 192.168.0.1. Run ifconfig eth0 nameserver 192.168.0.1. Ensure that the dns service is listed in the hosts entry in the /etc/nsswitch.conf file. Run bind add nameserver 192.168.0.1.

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 runlevel?. S99lpi. K99lpi. PRE-S99lpi. S98lpi. S99a-lpi.

The correct command sequence to create and mount logical volumes on a Linux system is: lvcreate, pvcreate, vgcreate, mkfs, mount. pvcreate, vgcreate, lvcreate, mkfs, mount. vgcreate, lvcreate, pvcreate, mount, mkfs. mkfs, pvcreate, vgcreate, lvcreate, mount. pvcreate, lvcreate, vgcreate, mkfs, mount.

What is the device name for the first SCSI tape drive on a system when used without automatic rewinding after each write operation? (Please specify the full path to the device.).

Which of the following are common backup systems used in Linux? (Choose TWO correct answers.). Amanda. Bacula. DrBackup. BREWBackup. SARcheck.

What action should be performed after increasing the size of a logical volume?. Run vgresize. Increase the size of the filesystem used for the logical volume. Run lvresize. Remount the logical volume.

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 is the correct parameter to pass to the kernel at boot time to force it to use only one of the available processors?. maxcpus=l. usecpus=l. smpcpus=l. vcpumx=l.

Which command is used to create a IS09660 filesystem? (Specify ONLY the command without any path or parameters.).

What command is used to make an exact copy, at a single point in time, of a logical volume for backup purposes?. lvsnap. lvsnapshot. lvcreate. lvcopy. lvclone.

Which of the following wireless tools can be used to check the wireless network link quality? (Choose TWO correct answers.). iwconfig. iwlink. iwscan. iwifi. iw.

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,____,_____, mkfs, mount. lvcreate, mdadm. lvcreate, vgcreate. lvmcreate, vgcreate. vgcreate, lvcreate. vgcreate, mdadm.

Running tcpdump -nli ethl 'tcp' shows the following output: 1 4:41:53.694538 IP 10.1.52.145.51738 > 24.215.7.162.143: Flags [.], ack 33051, win 1002, options [nop,nop,TS val 36789130 ecr 1746004159], length 0 What is the source IP address of this packet? (Please specify the answer in digits and dots ONLY.).

What does the -p3 option to the patch command do?. It will strip off path information from each file mentioned in the patch file up to and including the third/ character. patch continues execution as long as there are three or fewer errors. It instructs patch to look up to three lines of context before or after the declared line in the original file for a match. patch will keep three previous versions of each file in the output to prevent loss of change history. It instructs patch to conform more strictly to the POSIX standard.

What is the functionality that PXE provides?. The ability to boot a computer using its network interface. The ability to launch an remote Xll desktop on a computer. The ability to verify a system's configuration after completing the boot process. The ability to verify a system's configuration before completing the boot process.

What mechanism does collected use to gather monitoring information on systems?. It uses a library of plugins. A master server connects to a collected service on each machine to retrieve the information. It collects its own information on each server and sends that to a master server. It makes SNMP queries to the clients being monitored.

Which of the following filter keywords for tcpdump specify the transfer direction for network packets? (Choose TWO correct answers.). source. src. dest. src or dst. both.

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?. In the /etc/sysctl.conf. In the boot loader configuration file. In the /etc/runlevel file. In the /boot/initramfs file. In the /etc/rc.d/rc.local file.

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 run level directories?. /etc/init.d/apache2. /etc/rc2.d/70apache2. /etc/rc2.d/apache2. /etc/rc2.d/apache2.start.

When a makefile is included in a source code package, what are commonly defined targets in the file?. CFLAGS, CPPFLAGS, LIBS, LDFLAGS. clean, install, uninstall. PATHS, DESTDIR, LIBS, LDFLAGS. prefix, exec_prefix, bindir, mandir.

How can the label root be added to the ext2 filesystem on /dev/sdal?. relabel /dev/sdal root. tune2fs -L root /dev/sdal. echo 'root'> /proc/fs/sdal/label. labelfs --device /dev/sdal root.

A new kernel version needs to be compiled to use a new feature. If the old kernel configuration file is available, which make target creates a configuration file for the new kernel based on the configuration of the old kernel?.

Which of the following commands can be used to list 1Pv4 addresses and MAC addresses for IP devices that the system has seen on the local network?. arp. ifconfig. ipadm. iwlist.

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?. cp /boot/initramfs /tmp/initramfs.gz; gzip -c /tmp/initramfs.gz; mkdir /tmp/initramfs.dir ; cd /tmp/initramfs.dir; cpio -i < /tmp/initramfs. cp /boot/initramfs /tmp/initramfs.gz; gunzip /tmp/initramfs.gz; mkdir /tmp/initramfs.dir ; cd /tmp/initramfs.dir; cpio -i < /tmp/initramfs. cp /boot/initramfs /tmp/initramfs.gz; gunzip /tmp/initramfs.gz; mount /tmp/initramfs/mnt/ -o loop -t initramfs. cp /boot/initramfs /tmp/initramfs.gz; gunzip /tmp/initramfs.gz; mkdir /tmp/initramfs.dir ; cd /tmp/initramfs.dir; cpio -e /tmp/initramfs. cp /boot/initramfs /tmp/initramfs.gz; gunzip /tmp/initramfs.gz; mount /tmp/initramfs /mnt/ -o loop -t initrd.

A database application requires a maximum shared memory segment (shmmax) of 2GB (2147483648 Bytes). Which configuration file should be modified to set this kernel parameter permanently? (Specify the full name of the file, including path.).

A correctly formatted entry has been added to /etc/hosts .deny to prevent certain clients from connecting to a service but this is having no effect. What could be the cause of this? (Choose TWO correct answers.). tcpd needs to be sent the HUP signal. The service needs to be restarted. The machine needs to be restarted. There is a conflicting entry in /etc/hosts.allow. The service does not support tcpwrapper.

When is historical data of resource usage important? (Select THREE correct answers.). Predicting when resources will need to be increa. Selecting a computer vendor. Identifying processes killed during out of memory occurrences. Diagnosing capacity problems. Troubleshooting a software problem.

In the following output, what percentage of time was the CPU waiting for pending 1/0? # vmstat 1100 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---r b swpd free b uff 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. 0. 100. 35.9. 57.7. 36.6.

In capacity planning exercises, which tools assist in listing and identifying processes of interest? (Choose TWO correct answers.). acpid. lsof. pstree. telinit.

Which of the following commands can be used to script interactions with various TCP or UDP services?. ftp. nc. tcpdump. strings. wget.

The users of the local network complain that name resolution is not fast enough. Enter the command, without the path or any options, that shows the time taken to resolve a DNS query.

Considering the following kernel IP routing table below, which of the following commands must be used to remove the route to the network 10.10.1.0/24? (Select TWO answers) Kernel IP routing table. ip net delete 10.10.1.0/24. route del 10.10.1.0/24. route del -net 10.10.1.0/24. route del 10.10.1.0/24 gw 192.168.246.11. ip route delete 10.10.1.0/24.

The following command has just been run successfully: What will happen if the command sequence is run again?. An error saying that there is no tape present is generated because the tape has been ejected after being used. The contents of /opt will be restored again. The entire contents of /opt will be replaced with the contents of the next file on the tape. The contents of /opt will have additional content added from the next file on the tape.

Which file in /proc contains information on the status of local software RAID devices?. /proc/raidstat. /proc/mdstat. /proc/raidstatus. /proc/mdstatus. /proc/raid/status.

What is a key difference between a zlmage and bzlmage kernel image?. zlmage is compressed using gzip, bzlmage is compressed using bzip2. zlmage is for 2.6 series kernels, bzlmage is for 3.x series kernels. zlmage is limited to 64k, bzlmage has no such restriction. zlmage gets loaded completely into low memory. bzlmage will load into high memory once low memory is full.

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?. initrd. linux. menuentry. runlevel.

Which command will report information on memory usage, paging and block input/output?. free. memshow. ps. top. vmstat.

What are the options to node.startup in the iscsid .conf file? (Choose TWO correct answers.). login. initiate. manual. discover. automatic.

What should be done after updating the configuration file for syslogd in order to make the changes become effective? (Choose TWO correct answers.). No action is required, syslogd will notice the updated configuration file after a few minutes. Send the HUP signal to the syslogd process. Restart the syslogd service. Run the command syslogd -u.

How is the source code for the main Linux kernel modules distributed?. It is included with the Linux kernel source code. The kernel modules are downloaded on demand as they are used during compilation. The kernel modules have their own release cycle and can be maintained separately from the Linux kernel source. It is provided as a separate download alongside the Linux kernel source code of the same version.

Which keyword is used in the /etc/inittab file to define the SysV-init default system runlevel?.

Which of the following commands is used to set up a RAID volume?. makerd. mdadm. mkfs.raid. makeraid. rdconfig.

Which of the following files will be looked for and used by GNU make, if one of them exists, unless a different file is specified on the command line when trying to compile software from source code? (Choose TWO correct answers.). configure. config .h.in. makefile. Makefile. Makefile.in.

Which of the following is a CD-ROM filesystem standard?. OSI9660. ISO9660. SROFS. ISO8859. ROM-EO.

Where is the LILO boot loader code typically installed on a system with only a single Linux installation and no other operating systems?. In the master boot record. In the boot sector. In the /boot directory. At the start of the kernel.

Which of the following commands will list the 1Pv4 neighbors of the current system? This includes IP and MAC addresses. (Choose TWO correct answers.). arp. ifconfig -Iv eth0. netstat -al. ip neigh show.

Which command turns an existing ext2 filesystem non-destructively into an ext3 filesystem? (Specify ONLY the command without any path or parameters.).

What command will remove a physical volume from a volume group? (Specify ONLY the command without any path or parameters.).

When planning a web server which of the following choices will impact system sizing? (Choose THREE correct answers.). How many concurrent users are expected. Which hardware vendor has better Linux support. What type of content will be served. What scripting languages will the web server support. Will the OS install be CD, DVD or network based.

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. Two host names are using the same IP address. The server doing the query is on a different subnet. The fields are out of order. host2 is not a fully qualified domain name.

After configuring a new kernel, what file under /usr/src/linux/ contains the configuration?.

Which command is used to install a new LILO boot loader?. lilo. lilo-config. lilo-install. install-lilo.

The following is an excerpt from the output of tcpdump -nli ethl 'udp': 1 3:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.53: 43653+ A? lpi.org. (25) 1 3:03:17.598624 IP 192.168.5.112.53 > 192.168.123.5.1065: 43653 1/0/0 A 198.51.100.42 (41) Which network service or protocol was used?. FTP. HTTP. SSH. DNS. DHCP.

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

Which RAID level value must be used with Linux software RAID in order to create an array of mirrored devices?. 1. 5. 6. container. mirrorstripe.

In case the file containing the Linux kernel is lost, what happens when the system is booting?. The system starts normally since the bootloader copies the kernel to the master boot record of the hard disk. Instead of the kernel, the initramfs is loaded and instructed to mount the root filesystem and reinstall the kernel from the original package or from source. The bootloader mounts the root filesystem read-only and launches /bin/sh directly in order to allow the administrator to reinstall the kernel. Without a kernel a system cannot boot and, depending on the bootloader, an error is displayed.

Which directory contains the system-specific udev rule files? (Specify the absolute path including the directory name).

What information does the file modules.dep provide?. A list of all modules, compiled or not, that are available to the kernel. A list of modules trusted by the installed kernel. A list of devices and their module name. A list of all compiled modules and their dependencies. A list of modules the kernel needs to run.

What is the minimum number of disks required in a fully redundant RAIDS array?. 1. 2. 3. 4. 5.

What option in the collectd configuration file is required in order to define what to start monitoring?. LoadModule. Module. Plugin. LoadPlugin.

system has one hard disk and one CD writer which are both connected to SATA controllers. Which device represents the CD writer?. /dev/hdb. /dev/sdd. /dev/scd1. /dev/sr0. /dev/sr1.

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?. -d. -f. -n. -r.

What does a O in the last field (fsck order) of /etc/fstab indicate about the filesystem?. The filesystem should be checked before filesystems with higher values. The filesystem should be checked after filesystems with higher values. The filesystem check counter is ignored. The filesystem has been disabled from being checked and mounted on the system. The filesystem does not require an fsck check when being mounted.

Which of the following tools are used to measure memory usage? (Choose THREE correct answers.). mpstat. pstree. sar. top. vmstat.

Which file contains the message that is displayed above the login prompt of the system console? (Specify the full name of the file, including path .).

What is the full path to the directory which contains the scripts (or links to the original scripts) to run while the system boots to SysV-init runlevel 2?.

Which of the following are common Linux filesystem types used for root partitions? (Choose THREE correct answers.). ext4. VFAT. NTFS. XFS. Btrfs.

Which command can be used to scan a specified network looking for IP addresses that appear to be in use?. nmap. tcpdump. ip. netscan. hostdiscover.

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?. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; mount/tmp/swapfile. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swapon /tmp/swapfile. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon/tmp/swapfile. touch -SG /tmp/swapfile; swapon /tmp/swapfile. mkswap /tmp/swapfile 512000; swapon /tmp/swapfile.