4012877
Description
Quiz by heriveltogabriel, updated more than 1 year ago
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Created by heriveltogabriel
about 9 years ago
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Question 1
Question
Which two statements are true concerning the installation and configuration of the bootloader by the Anaconda installer, which is then used to boot Oracle Linux?
Answer
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The Linux Loader (LILO) bootloader may be chosen for installation.
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The bootloader must be password protected and Anaconda prompts for a password in all cases.
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The Grand Unified Bootloader (GRUB) is the only bootloader used by Oracle Linux.
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If previously installed operating systems are found on disk partitions that were not overwritten, then an attempt is made to configure the bootloader to be able to boot them.
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The bootloader is installed by default in the first partition of the disk.
Question 2
Question
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?
Answer
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set | grep service
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echo $SERVICE
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env | grep SERVICE
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env $SERVICE
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set $SERVICE
Question 3
Question
Which statements is true concerning Oracle Linux configuration files for users and groups?
Answer
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The /etc/passwd file contains hashed passwords for each user.
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The /etc/shadow file contains hashed passwords for each user.
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The GECOS field in /etc/passwd file may be empty.
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The /etc/group file contains the group name and the hashed group password.
Question 4
Question
Examine these statements and their output taken right after successful install of Oracle Linux:
[root@FAROUT /] rpm –q firstboot Firstboot -1.110.10-1.0.2.e16.x86_64
[root @FAROUT /] # chkconfig - - list firstboot Firstboot 0:off 2:off 3:off 4:off 5:off 6;off
[root@FAROUT /] # /etc/sysconfig/firstboot RUN_FIRSTBOOT=NO
What is the conclusion?
Answer
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The option to run firstboot was deselected during Oracle Linux installation.
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The system was installed with desktop graphical packages and rebooted and the firstboot utility ran successful.
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Firstboot never ran in any run level because the service is turned off for all run levels.
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The system was installed without selecting desktop graphical packages, thereby disabling firstboot from running.
Question 5
Question
Which three settings can be controlled by using the chage breemar command as the root user, to modify the parameters in the /etc/shadow file?
Answer
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The expiration date of the breemar account
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The number of days after the breemar account is locked, that it becomes expired
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The maximum number of days that must elapse between password changes by the user breemar before the password becomes invalid
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The number of days after the breemar account is locked, that it becomes unlocked
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The minimum number of days that must elapse between password changes by the user breemar
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The maximum number of failed login attempts on the breemar account before the account is locked
Question 6
Question
Examine this extract from the /etc/ssh/sshd_config file:
passwordAuthentication no
What is the effect of this parameter settings on the use of openSSH commands on both the client and server?
Answer
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Passwords are not required and no ssh-keygen is required either. Only passphrase are required.
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Client users whose keys are not in the authorized_keys file on the server are unable to use passwords to authenticate themselves to the server.
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The ssh daemon does not ask for a password before starting or stopping the sshd service.
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Client users whose keys are not in the authorized_keys file on the client are unable to use passwords to authenticate themselves to the server.
Question 7
Question
Which four statements are true about software on the Oracle Public YUM server?
Answer
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It contains Oracle Linux installation ISO images.
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It contains Oracle Linux binary RPM packages.
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It contains Oracle Linux errata packages.
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It contains Oracle Linux source RPM packages.
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It contains beta Oracle Linux software packages.
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It does not contain Unbreakable Enterprise Kernel packages.
Question 8
Question
< -- This MDADM output:
Which two aspects can be determined from this output?
Answer
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A device failed and has been removed from this RAID set.
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It is no longer possible to write to this RAID set.
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Read and write performance is no longer optimal on this RAID set.
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This RAID set was built without a spare device.
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Only Write performance is no longer optimal on this RAID set.
Question 9
Question
Examine the command on its output:
[root@FAROUT ~] # modprobe –v nfs
Insmod /lib/modules/2.6.39-100.0.12.e16uek.x86_64/kernel/fs/nfs_common/nfs_acl.ko insmod /lob/modules/2.6.39-
100.0.12.e16uek.x86_64/kernel/net/sunrpc/auth_gss/auth_rpcgss.ko
Insmod /lib/modules/2.6.39-100.0.12.e16uek.x86_64/kernel/fs/fscache/fscache/ko Insmod /lib/modules/2.6.39-100.0.12.e16uek.x86_64/kernel/fs/locked.ko
Insmod /lib/modules/2.6.39-100.0.12.e16uek.x86_64/kernel/fs/nfs/nfs.ko
Which two statements are true about the modprobe command?
Answer
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It will load the nfs module if all the modules upon which it depends have been loaded.
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It displays the dependency resolution for the nfs module and loads all the modules upon which nfs depends before loading the nfs module.
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It verifies that the nfs module and all other modules that depend on the nfs module are installed.
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It displays the dependency resolution that would occur if the nfs module were to be loaded using modprobe nfs.
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It only loads the nfs module if all the modules upon which it depends have not been loaded yet.
Question 10
Question
What is the main advantage of the Oracle Unbreakable Enterprise Kernel compared with the Red Hat compatible kernel?
Answer
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It is more secure and, therefore, more difficult to hack.
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It has a lower Mean Time Between Failures.
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It provides higher availability for applications by reducing Mean Time to Recovery.
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It scales better for more CPUS, memory, and Infiniband network connections.
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