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NEW QUESTION 78
A web server on HOST01 is listening on port 80.
Examine the IPTABLES rule shown: [root@host01 ~] # iptables -L INPUT Chain INPUT (policy ACCEPT) targetportoptsourcedestination
ACCEPTtcp- - anywhereanywheretcp dpt:http Another rule is then added: [root@host01 ~] # iptables -A INPUT -P tcp - - dport 80 -j REJECT What is the effect of this command on subsequent attempts to access the web server on
HOST01 using port 80?
- A. New connection attempts timeout.
- B. New connection attempts are refused and the client informed of the refusal.
- C. New connection attempts always succeed.
- D. New connection attempts succeed until a reload of the firewall rules.
Answer: A
NEW QUESTION 79
Which two statements are true about the Unbreakable Linux Network (ULN)?
- A. It contains only binary RPM packages.
- B. It is the only location to download errata.
- C. It contains additional packages not found on the installation media.
- D. It is freely available to all Oracle Linux customers.
- E. It contains both source and binary RPM packages.
- F. All Unbreakable Linux subscribers are allowed to deploy a local YUM repository.
Answer: C,E
Explanation:
Explanation
B: ULN subscribers will find security updates and additional bugfixes for kernel and other packages. They will also be able to download useful extra packages not included in the original distribution.
D: You can also select to download the source RPM in addition to the binary RPMs.
Incorrect:
not A: How do I obtain a login for Unbreakable Linux Network (ULN)?
You may register for a ULN account via linux.oracle.com/register You will need the following:
An Oracle.com Single Sign on account. If you don't have one already, the link above will guide you through the steps to create one A valid Oracle Linux support or Oracle VM support CSI (customer support identifier). You may purchase Oracle Linux or Oracle VM support online via the Oracle Linux Store or via your sales representative.
NEW QUESTION 80
Match the following symbolic notations of the file permissions with their numeric values:
- A. 1-f, 2-a, 3-c, 4-b, 5-e, 6-d
- B. 1-b, 2-d, 3-f, 4-a, 5-e, 6-c
- C. 1-b, 2-f, 3-d, 4-a, 5-c, 6-e
- D. 1-d, 2-f, 3-b, 4-e, 5-c, 6-a
Answer: C
NEW QUESTION 81
Refer to the Exhibit.
[root@server1 ~ # 1s -1 /usr/bin/passwd
-r-x-x-x 1 root root 21200 oct 7 21:01 /usr/bin/passwd
[root@server1 ~] # 1s -1 /etc/shadow
-r - - - - - - - - 1 root root 1818 Mar 7 10:31 /etc/shadow]
[root@server1 ~]#
A user smith is on your system complained that he is not able to change his password. As the administrator, you long-listed the passwd command and the /etc/shadow file.
View the Exhibit that shows the output.
What must you do to enable this user to change his password?
- A. Set SUID on /usr/bin/passwd.
- B. Set SGID on /usr/bin/passwd.
- C. Set sticky bit on /usr/bin/passwd.
- D. Set read and write permission for others on /etc/shadow.
- E. Set permission on /etc/shadow to 600.
Answer: D
NEW QUESTION 82
You are about to switch a Red Hat Enterprise Linux 6 (RHEL6) system from the Red Hat Network to the Unbreakable Linux Network (ULN).
Consider this output:
# rpm -qa *rhn*
rhnlib-2.5.22-12.e16.noarch
yum-rhn-plugin-0.9.1-36.e16.noarch
rhn-setup-1.0.0-73.e16.noarch
rhn-client-tools-1.0.0-73.e16.noarch
rhn-check-1.0.0-73.e16.noarch
rhnsd-4.9.3-2.e16.x86_64
Identify four minimum steps that you should perform to successfully switch this system from RHN to ULN.
- A. Run the yum update command.
- B. Install the uln_register.tgz package.
- C. Install the Unbreakable Enterprise kernel (UEK).
- D. Install the uln_register.tgz and uln_register-gnome.tgz packages.
- E. Run the uln_register command as the root user and answer the prompts.
- F. Create a ULN account if it doesn't exist already.
- G. Reboot your system.
- H. Ensure you have a valid Oracle Linux support agreement.
Answer: B,E,F,H
Explanation:
If you have a server installed with Red Hat Enterprise Linux Server, you need to perform the following steps to obtain software updates via Oracle's Unbreakable Linux Network:
Verify minimum software requirements
Ensure you have a valid Oracle Linux Services Agreement
{Download the rpms required for registering your system to ULN
Install the downloaded rpms}
Create a ULN account
Import Oracle's GPG key (not required for Red Hat Enterprise Linux 6 and later) Register your server The uln_register-gnome.tgz is needed only if the rhn-setup-gnome package is installed on your system.
NEW QUESTION 83
Which three statements are true about the Oracle Linux Logical Volume Manager (LVM)?
- A. LVM supports simple, striped, mirrored, and RAID-5 Logical Volumes (LVs).
- B. A Physical Volume (PV) can be resized.
- C. A Volume Group (VB) can be split into multiple Volume Groups.
- D. A Physical Volume (PV) can be created on a disk or a disk partition.
- E. An LVM snapshot is read-only.
- F. A Physical Volume (PV) can only be created on a disk partition.
Answer: C,E,F
NEW QUESTION 84
Which three statements are correct about NFSV4?
- A. It uses a single port (2049) for all client/server communications.
- B. RPC.IDMAPD is used to map a UID to its username and a GID to its group name and vice versa.
- C. It relies on the LOCKD and RPC.STATD daemons to perform file locking.
- D. It has support for filesystem quotas.
- E. The UID and GID for a particular user must be the same on both client and server to avoid file ownership problems.
Answer: B,D,E
Explanation:
NFSv4 does not use rpcbind as the NFS server itself listens on TCP port 2049 for service requests. The mounting and locking protocols are also integrated into the NFSv4 protocol, so the lockd and rpc.statd services are also not required. These refinements mean that firewall configuration for NFSv4 is no more difficult than for a service such as HTTP.
https://docs.oracle.com/cd/E37670_01/E41138/html/ol_about_nfs.html
NEW QUESTION 85 
Which four statements are about the use of these files and directories by UPSTART?
- A. /etc/rc.d/rc.sysinit is executed once at boot time, regardless of which run level is set.
- B. /etc/rc.d/rc is executed after /etc/rc.d/rc.local.
- C. /etc/rc.d/rc is executed each time the /sbin/init command us used, to change services appropriately for the target run level.
- D. /etc/rc.d/rc is executed at boot time, to start the appropriate services for the run level defined in /etc/ initab.
- E. /etc/rc.d/rc.sysint is executed each time the /sbin/init command is used to change the run level.
- F. /etc/rc.d/rc3.d contains links to scripts in /etc/init.d.
- G. /etc/rc.d/rc.local is executed at boot time, before the run level processing takes place.
Answer: A,C,D,F
Explanation:
Explanation/Reference:
Explanation:
NEW QUESTION 86
Which four statements correctly describe the contents of the sysfs filesystem?
- A. It contains metadata on device classes.
- B. It contains metadata on all block devices.
- C. It contains metadata on all loaded modules in the kernel.
- D. It contains kernel parameter files.
- E. It contains metadata on system uptime.
- F. It contains metadata on firmware.
Answer: A,B,C,F
NEW QUESTION 87
Examine this sequence of commands and output:
[root@FARAWAY ~] # cat /etc/oracle-release
Oracle Linux Server release 6.1
[root@FARAWAY ~]# rpm -qa oraclelinux*
Oraclelinux-release-noted-6Server-5.x86_64
Oraclelinux-release-6Server-1.0.2.x86_64
[root@FARAWAY ~] # rpm -qa rehat-release*
[root@FARAWAY ~] #
[root@FARAWAY ~] # rpm -qf /etc/oracle-release
Oraclelinux-release-6Server-1.0.2.x86_64
[root@FARAWAY ~] rpm -qf /etc/redhat-release
Oraclelinux-release-6Server-1.0.2.x86_64
Which two can be determined from this output?
- A. The system has Oracle Linux 6 installed and the Red Hat compatible kernel is running.
- B. The oracle-release package contains both Oracle and Red Hat release metadata.
- C. It is not possible to determine which kernel is running.
- D. The system has Oracle Linux 6 installed and the Oracle Unbreakable Enterprise kernel Is running.
- E. This system has been booted at least once, with the Red Hat-compatible kernel and once with the Unbreakable Enterprise kernel.
Answer: B,C
Explanation:
Explanation/Reference:
Explanation:
NEW QUESTION 88
Your Oracle Linux server has a network interface eth0 but the ifcfg-eth0 file is missing from the /etc/sysconfig/network-scripts directly.
To set the IP address for the interface, you run this command as root:
[root@station1]# ifconfig eth0 192.168.0.1 up
What is the effect of the command?
- A. The IP address 192.168.0.1 is assigned to echo with the default netmask for that address, and the interface is activated immediately.
- B. The IP address 192.168.0.1 is assigned to eth0, but the interface is not activated until the network service is reloaded.
- C. The IP address 192.168.0.1 is assigned to eth0, but the interface is not activated until the network service is restarted.
- D. The IP address 192.168.0.1 is not assigned to eth0 because the netmask is not specified.
Answer: C
NEW QUESTION 89
Which four statements are true about software on the Oracle Public YUM server?
- A. It does not contain Unbreakable Enterprise Kernel packages.
- B. It contains beta Oracle Linux software packages.
- C. It contains Oracle Linux errata packages.
- D. It contains Oracle Linux source RPM packages.
- E. It contains Oracle Linux installation ISO images.
- F. It contains Oracle Linux binary RPM packages.
Answer: A,C,D,F
Explanation:
Explanation/Reference:
Explanation:
The Oracle public yum server offers a free and convenient way to install the latest Oracle Linux packages as well as packages from the Oracle VM installation media via a yum client.
Oracle provides all errata and updates for Oracle Linux via the Public Yum service, which includes updates to the base distribution, but does not include Oracle-specific software.
F: By default, all new installations of Oracle Linux 6 Update 5 are automatically configured to use the public yum update service. If you subsequently register the system with ULN, the public yum service is automatically disabled.
NEW QUESTION 90
Which four statements correctly describe the contents of the sysfs filesystem?
- A. It contains metadata on device classes.
- B. It contains metadata on all block devices.
- C. It contains metadata on all loaded modules in the kernel.
- D. It contains kernel parameter files.
- E. It contains metadata on system uptime.
- F. It contains metadata on firmware.
Answer: A,B,C,F
Explanation:
Explanation/Reference:
References:
NEW QUESTION 91
The user smith, whose primary group is smith, wants to create a file in his home directory, which belongs to the group apps.
Which two statements are correct?
- A. The user smith can use the newgrp command to change the primary group to apps, but a password is required if smith is not listed in /etc/group as a member of the apps group.
- B. The user smith can use the newgrp command to change the primary group to apps, only if smith is listed in /etc/group as a member of the apps group.
- C. SGID should be set on smith's home directory to let smith create files that belong to a group that is not his primary group.
- D. The user smith can create a file that belongs to the apps group, only If his private group is the apps group as per /etc/group.
Answer: A,B
Explanation:
Explanation/Reference:
Explanation:
NEW QUESTION 92
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?
- A. 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.
- B. 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.
- C. Passwords are not required and no ssh-keygen is required either. Only passphrase are required.
- D. The ssh daemon does not ask for a password before starting or stopping the sshd service.
Answer: B
Explanation:
Explanation/Reference:
Explanation:
If you set PasswordAuthentication to no, you will no longer be able to use a login and password to authenticate and must use a login and public key instead (if PubkeyAuthentication is set to yes).
NEW QUESTION 93
Which three actions may be done using the Anaconda installer when working with an Oracle Linux 6 system?
(Choose three.)
- A. downgrading an installed system
- B. booting an installed system from a local drive
- C. upgrading an installed system
- D. deinstalling an installed system
- E. attempting a rescue to repair problems with a partition table that prevents booting an installed system
Answer: B,C,E
NEW QUESTION 94
Which two statements are true about administering the use of the Sudo command in Oracle Linux?
- A. Multiple administrators may edit the /etc/sudoers file simultaneously using vi but only one may save the edited result.
- B. Using vi to edit /etc/sudoers opens the file read only.
- C. visudo will never save the /etc/sudoers file if there are syntax errors in the file after editing.
- D. Multiple administrators may edit the /etc/sudoers file simultaneously using visudo but only one may save the edited result.
- E. visudo prompts for an action if there are syntax errors in the /etc/sudoers file after editing.
Answer: B,E
NEW QUESTION 95
Which three statements are true about administering user accounts and groups for an Oracle Linux server in preparation for installing the Oracle Database server?
- A. The Oracle software owner must not be the root user.
- B. The Oracle software owner must be a Linux user called oracle.
- C. The /etc/sudoers file must specify that the Oracle software owner be allowed to run commands as root.
- D. The OINSTALL group owns the Oracle Inventory.
- E. The owner of the Oracle httpd daemon process must be the Linux user called nobody.
- F. A Linux user who is a member of the OSDBA group may start an Oracle database instance.
Answer: A,D,F
NEW QUESTION 96
Which three statements are true about administering user accounts and groups for an Oracle Linux server in preparation for installing the Oracle Database server?
- A. The Oracle software owner must be a Linux user called oracle.
- B. The /etc/sudoers file must specify that the Oracle software owner be allowed to run commands as root.
- C. The OINSTALL group owns the Oracle Inventory.
- D. The Oracle software owner must not be the root user.
- E. The owner of the Oracle httpd daemon process must be the Linux user called nobody.
- F. A Linux user who is a member of the OSDBA group may start an Oracle database instance.
Answer: A,C,F
Explanation:
A: The Oracle software owner user (typically, oracle) You must create this user the first time you install Oracle software on the system. This user owns all of the software installed during the installation. This user must have the Oracle Inventory group as its primary group. It must also have the OSDBA and OSOPER groups as secondary groups.
D: The OSDBA group (dba)
You must create this group the first time you install Oracle Database software on the system. It identifies operating system user accounts that have database administrative privileges (the SYSDBA privilege). The default name for this group is dba.
F: The Oracle Inventory Group (typically, oinstall)
You must create this group the first time you install Oracle software on the system. The default name chosen for this group is oinstall. This group owns the Oracle inventory that is a catalog of all Oracle software installed on the system.
NEW QUESTION 97
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