Pass the Oracle Oracle Linux Administration 1z0-106 Questions and answers with CertsForce

Explanation of Answer E:This option correctly matches the Kubernetes components with their descriptions:

Kubectl- d. Command-line interface used to control Kubernetes

Etcd- f. Stores configuration data relating to the cluster

Kubelet- c. Agent that allows nodes to communicate with the API

Kube-proxy- e. Performs networking functions and routes network traffic

Kube-apiserver- a. Processes and validates requests and performs operations

Kube-scheduler- b. Determines where containers should run based on resource availability

Explanation of Answer C:When configuring SSH, the command-line options take the highest precedence. Any configuration specified directly on the command line will override settings in user-specific (~/.ssh/config) or system-wide configuration files (/etc/ssh/ssh_config).

Option B (Correct):Round-robin is a network bonding mode that distributes outgoing traffic evenly across all active network interfaces.

Option D (Correct):802.3ad (LACP - Link Aggregation Control Protocol) is a bonding mode that allows dynamic aggregation of links conforming to the IEEE 802.3ad standard.

Option F (Correct):Active Backup is a bonding mode where one interface is active while the other is in standby, providing redundancy.

Options A, C, E, G (Incorrect):Multicast, Split Horizon, Poison Reverse, and Passive Backup are not valid bonding modes in Oracle Linux 8.

Oracle Linux Reference:Refer to:

Oracle® Linux 8: Network Bonding Guide

Option A (Correct):A slice unit in systemd is a grouping mechanism used for hierarchical management of resources (such as CPU, memory, and I/O) among a group of processes.

Options B, C, D (Incorrect):These options do not correctly describe the role or characteristics of slice units in Oracle Linux 8.

Oracle Linux Reference:Refer to:

Oracle® Linux 8: Managing Services with systemd

Explanation of Answer B:The commandssh -L 5011:127.0.0.1:80 bob@10.10.2.20 -f sleep 30creates a local port forward. This means port5011on the client machine is forwarded to port80on the remote machine (10.10.2.20) using the SSH connection.

Explanation of Answer E:The-foption of thesshcommand causes the SSH connection process to fork to the background after authentication is complete. Thesleep 30command keeps the SSH connection alive for 30 seconds.

Option A (Correct):The configuration lineauthpriv.* /var/log/authwould direct all messages of theauthprivfacility (which includes sensitive authentication messages) to the/var/log/authfile. The log entries provided, which include authentication-related messages from PAM (pam_unix), would be logged due to this setting.

Option B (Incorrect):The*.emerg *setting logs emergency messages to all users, not specifically the provided log output.

Option C (Incorrect):This setting logs various non-authentication-related messages to/var/log/messages. It specifically excludesauthpriv.

Option D (Incorrect):This setting appears to be commented out and incorrect for the logging behavior described.

Option E (Incorrect):Thecron.*setting logs cron messages, unrelated to the provided authentication logs.

Oracle Linux Reference:Refer to:

Oracle® Linux 8: System Logging with rsyslog

Understanding the Automounter Configuration:

/etc/auto.master:

/net -hosts

/- auto.direct ro

The /- auto.direct ro line indicates:

Mount Point Prefix:/ (direct mounts)

Map File:auto.direct

Global Mount Options:ro (read-only)

/etc/auto.direct:

/nfs1 host01:/export/share1

/nfs2 -sync host01:/export/share2

/nfs3 host02:/export/share3

/nfs1 and /nfs3:

No specific mount options in auto.direct.

Inherit the ro option from /etc/auto.master.

/nfs2:

Specifies -sync option in auto.direct.

Inherits ro from /etc/auto.master.

Mount options are ro,sync.

Mount Options Resolution:

Global Options (ro) apply to all entries unless overridden.

Per-Entry Options in auto.direct override or supplement global options.

Effective Mount Options:

/nfs1:

ro (from /etc/auto.master)

Default NFS options (async unless sync is specified)

/nfs2:

ro (from /etc/auto.master)

sync (specified in auto.direct)

/nfs3:

ro (from /etc/auto.master)

Default NFS options (async)

Oracle Linux Reference:

Oracle® Linux 8: Configuring File Systems-Automounter Configuration:

"Options specified in the master map apply to all entries in the map unless overridden by entries in the map itself."

NFS Default Options:

"By default, NFS mounts are asynchronous (async) unless the sync option is specified."

Conclusion:

/nfs1 and /nfs3:Mounted with ro,async.

/nfs2:Mounted with ro,sync.

Correct Option:A

Option A (Correct):A user private group (UPG) ensures that each user has their own unique group created with the same name and ID as the user.

Option E (Correct):The UPG model helps prevent other users from modifying files by default, as newly created files are assigned to the user’s unique group and not to a shared group.

Option B (Incorrect):UPG does not give the capability to create new group users; this is related to group management commands.

Option C (Incorrect):UPG does not providesudocapabilities;sudoconfiguration is managed separately.

Option D (Incorrect):UPGs do not limit reading files to group users by default; it depends on specific file permissions.

Oracle Linux Reference:Refer to:

Oracle® Linux 8: Managing Users and Groups

Thednf infocommand provides detailed information about an installed package. When used with the path of a binary (such as/usr/bin/gzip), it shows the package that provides the binary along with detailed information like the version, release, architecture, size, source, repository, summary, URL, and license.

Option B (Correct):The output shows that the RAID array is in a "degraded, recovering" state, which means one of the devices failed, and the RAID is currently rebuilding with a spare device. When a RAID-5 array is in a degraded state, its read and write performance is reduced because it cannot utilize all disks in parallel, and data is being rebuilt.

Option C (Correct):The output indicates that/dev/sdf1is marked as "spare rebuilding." This implies that a new spare device has been added to the RAID array to replace a previously failed device, and it is in the process of rebuilding to restore redundancy.

Option A (Incorrect):The state of the RAID array is "degraded," which indicates that a RAID device is still being rebuilt. The failed device has not yet returned to normal operating status.

Option D (Incorrect):No extra device was added to increase the RAID set's size. Instead, a spare device was added to replace a failed one.

Option E (Incorrect):Both read and write performance are sub-optimal in a degraded RAID-5 state because data is being rebuilt using the remaining active devices.

Oracle Linux Reference:For more information, refer to:

Oracle® Linux 8: Managing Storage Devices

man mdadmfor details on managing RAID arrays.