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Oracle Linux 5 and 6 System Administration

Question No: 1

Which three statements are true about the mount command?

  1. It supports labels.

  2. By default, it can be used by an ordinary user to mount a local file system.

  3. It lists all the currently mounted filesystems, if executed without any arguments

  4. It lists only the filesystems listed in /etc/fstab if executed without any arguments.

  5. Only root can mount filesystems that are not listed in listed in /etc/fstab.

Answer: A,C,E

Reference: https://access.redhat.com/site/documentation/en- US/Red_Hat_Enterprise_Linux/5/html/Deployment_Guide/chap- Using_the_mount_Command.html

Question No: 2

Examine the line from /etc/rsyslog.conf: Mail.*-/var/log/maillog

Which statement correctly describes this rule?

  1. The rule name prefix of “-” is tolerated for syslog and syslog.sys compatibility with no impact or rsyslog behavior regardless of the global directive settings.

  2. The file name prefix of “-” is a way of disabling mail log messages under certain conditions to /var/log/maillog.

  3. The filename prefix of “-” is a performance enhancement. It stops file syncing on every message. The log certain will be the same whether a minus prefix is used or not.

  4. The file name prefix of “-” forces file syncing after every message is logged to ensure each message is written to disk force before attempting to write a subsequent message to the same file.

Answer: C

Explanation: You may prefix each entry with the minus “#39;#39; sign to omit syncing the file after every logging. Note that you

might lose information if the system crashes right behind a write attempt. Nevertheless this might give you

back some performance, especially if you run programs that use logging in a very verbose

manner.

Question No: 3

Which two software packages are prerequisites for enabling the configuration and use of a Network information Service (Nis) client?

  1. nis-tools

  2. slapi-nis

  3. ypbind

  4. nisserv

  5. nisbind

  6. yp-tools

Answer: C,F

Explanation: ypbind finds the server for NIS domains and maintains the NIS binding information. The client (normaly the NIS routines in the standard C library) could get the information over RPC from ypbind or read the binding files.

Question No: 4

Examine the content of the mdstat pseudo file:

# cat /proc/msstat

personalities: [raid1] [raid0] [raid6] [raid5] [raid4] md0 : active raid1 md2[1] md1[0]

207680blocks super 1.2 [2/2] [UU] md2 : activeraid0 sdg[1] sdf1[0] 207872blocks super 1.2 512k chinks Md1 :active raid0sde1[1] sdd1[0]

207872blocks super 1.2 512k chunks Unused devices: lt;nonegt;

Which two statements are true about the MD0 RAID set?

  1. MDO is a stripped mirror RAID set.

  2. MDO is a mirrored stripped RAID set.

  3. If MD1 fails, so will MDO.

  4. If MD2 fails, MDO too fails.

  5. If /dev/sdd1 and /dev/sdg1 fail, MDO fails.

Answer: B,E

Question No: 5

Examine the output shown:

[root@FAROUT fs] # rpm -qa | grep preinstall

Oracle-rdbms-server-11gR2-preinstall-1.0-6.e16.x86_64

[root@FAROUT fs] # rpm -q1 oracle-rdbms-server-11gR2-preinstall-1.0-6.e16.x86_64

/etc/rc.d/init.d/oracle-rdbms-server-11gR2-preinstall-firstboot /etc/sysconfig/Oracle-rdbms- server-11gR2-preinstall-verify

/etc/sysconfig/oracle-rdbms-server-11gR2-preinstall/Oracle-rdbms-server-11gR2- preinstall.param

/usr/bin/oracle-rdbms-server-11gR2-preinstall-verify

Which three statements are true about oracle-rdbms-server-11gR2-preinstall-1.0- 6.e16.x86_64 rpm?

  1. It is a new name for oracle-validated package from Oracle Linux 5 that sets parameters to the same values.

  2. It creates the oracle user if not already created, which owns the Grid Infrastructure software should that get installed.

  3. It creates the grid user if not already created which owns the grid infrastructure software should that get installed.

  4. It modifies kernel parameters in /etc/sysctl.conf.

  5. It runs at the first boot after installing the packages to set a parameter indicating that is has run once.

  6. It modifies parameters in the /etc/sysconfig/network-scripts directly.

  7. It creates the osoper group, if not already created.

Answer: A,B,D

Question No: 6

Examine these commands used to control UPSTART logging:

[root@FAROUT init] # initctl log-priority info [root@FAROUT init] # initctl log-priority

Info

[root@FAROUT init]#

Which three statements are true about the logging done through these commands?

  1. UPSTART logs State Changes to /vat/log/messages.

  2. UPSTART logs job goals to /var/log/massages.

  3. UPSTART logs only informational messages about warnings and errors to

    /var/log/messages.

  4. UPSTART logs only informational messages about warnings to /var/log/messages.

  5. UPSTART logs event emissions to /var/log/messages.

Answer: A,C,E

Question No: 7

During the setup of additional swap space on an ext2 filessystem, you encounter an error as shown below:

Ensurepass 2018 PDF and VCE

Which action must you perform to add additional swap space?

  1. Create a symbolic link /dev/swapfile that points to u01/swapfile.

  2. Reinitialize /u01/swapfile by issuing mkswap -L swapfile /u01/swapfile.

  3. Re-create the swapfile on an ext3 or ext4 filesystem.

  4. Change LABEL=swapfile to /u01/swapfile in the appropriate /etc/fstab entry.

  5. None, because adding filesystem based swap space is not supported.

Answer: D

Question No: 8

Which three methods might be used to change kernel parameters, thereby modifying the values for running system?

  1. Using the echo command to write values to specific files in the /sys directory

  2. Issuing the sysct1 -w command to write values to specific files in the /proc/sys directory

  3. Issuing the sysct1 -w command to write values to specific files in the /sys directory

  4. Adding to or modifying parameters in /etc/sysct1.conf and issuing the sysct1 -p command

  5. Using the echo command to write values to specific files in the /proc/sys directory

Answer: B,D,E

Question No: 9

You want to display the value of a shell variable called service after assigning a value as shown:

SERVICE =ACCT S

Which two settings will display the name of the variable and its value?

  1. set | grep service

  2. echo $SERVICE

  3. env | grep SERVICE

  4. env $SERVICE

  5. set $SERVICE

Answer: B,C

Explanation: C: env – set the environment for command invocation

If no utility operand is specified, the resulting environment shall be written to the standard output, with one name= value pair per line.

Question No: 10

Which two actions should be completed when the firstboot utility runs under runlevel 5 in Oracle Linux?

  1. Agreeing to the license agreement

  2. Registering for software updated

  3. Creating a nonadministrative user

  4. setting the current date and time to be synchronized with an NTP server

  5. Configuring the dtrace facility

Answer: A,C

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