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Oracle Linux 8 Advanced System Administration Certification Exam is ideal for administrators who want to showcase their skills in managing large and complex Oracle Linux systems. Oracle Linux 8 Advanced System Administration certification exam evaluates the candidate’s ability to manage advanced system administration tasks in Oracle Linux systems, allowing organizations to identify skilled professionals who can help them manage their IT infrastructure more effectively. 1Z0-106 exam covers Oracle Linux 8, which was released in May 2019 and contains several key new features.
NEW QUESTION # 15
Examine this network configuration:
NAME="ens4"
DEVICE="ens4"
ONBOOT=no
NETBOOT=yes
IPV6INIT=yes
BOOTPROTO=none
IPADDR=192.168.2.5
PREFIX=24
GATEWAY=192.168.2.1
TYPE=Ethernet
Which two statements are true after executing nmcli con mod ens4 ipv4.method auto?
- A. IPADDR value is considered null.
- B. Interface ens4 is assigned an IP address of 192.168.2.5.
- C. Interface ens4 automatically starts on boot.
- D. ONBOOT value is set to yes.
- E. BOOTPROTO value is set to dhcp.
- F. ONBOOT value is set to dhcp.
Answer: D,E
NEW QUESTION # 16
Examine this command:
# nft add rule inet filter input tcp dport 80 drop
Which two statements are true upon execution?
- A. All traffic inbound on port 80 is dropped.
- B. TCP packets outbound on port 80 are dropped.
- C. The rule applies to the input table.
- D. The rule is applied to both IPv4 and IPv6 packets.
- E. The rule updates the configuration on disk.
- F. TCP packets inbound on port 80 are dropped.
Answer: D,F
Explanation:
* Option A (Correct):The rule is applied to both IPv4 and IPv6 packets. Theinettable is used for filtering both IPv4 and IPv6 traffic, and since the rule is added to theinettable, it affects both IP versions.
* Option E (Correct):The rule drops TCP packets inbound on port 80. The rule specifies theinputchain in thefiltertable, and it drops (drop) all TCP traffic (tcp) destined for port 80 (dport 80), which means any incoming TCP traffic on port 80 will be dropped.
* Option B (Incorrect):The command does not automatically update the configuration on disk; the rule is applied immediately in memory but does not persist across reboots unless explicitly saved.
* Option C (Incorrect):The rule specifies TCP packets only, not all traffic. Therefore, it does not drop traffic for protocols other than TCP.
* Option D (Incorrect):Although this statement is correct, it is less specific than Option A, which is more accurate because it mentions both IP versions.
* Option F (Incorrect):The rule applies to inbound traffic, not outbound, so it does not drop outbound traffic.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Managing Firewall Rules with nftables
NEW QUESTION # 17
Examine this command:
# nft add rule inet filter input tcp dport 80 drop
Which two statements are true upon execution?
- A. All traffic inbound on port 80 is dropped.
- B. TCP packets outbound on port 80 are dropped.
- C. The rule applies to the input table.
- D. The rule is applied to both IPv4 and IPv6 packets.
- E. The rule updates the configuration on disk.
- F. TCP packets inbound on port 80 are dropped.
Answer: D,F
NEW QUESTION # 18
Examine this command and output:
# cat deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
spec:
selector:
matchLabels:
app: nginx
replicas: 2
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.14.2
ports:
- containerPort: 80
Now examine this command which executes successfully:
$ kubectl create -f deployment.yaml
Which two statements are true?
- A. The command creates and guarantees the availability of a specified number of identical pods.
- B. The command specifies port 80 as the port that the container exposes.
- C. The command creates a pod named nginx.
- D. The command creates a deployment named nginx.
- E. The command specifies nginx image version 1.14.2 and will fail if the image version is not available.
Answer: A,B
Explanation:
* Option A (Correct):The command creates a Kubernetes Deployment, which ensures the specified number of replicas (pods) are running at all times. The deployment will manage the creation and maintenance of these pods to ensure availability.
* Option D (Correct):The deployment configuration specifies that the container running inside the pod exposes port 80 (containerPort: 80).
* Option B (Incorrect):The deployment is namednginx-deployment, notnginx.
* Option C (Incorrect):The command creates a Deployment object that manages multiple pods; it does not directly create a single pod namednginx.
* Option E (Incorrect):The command specifies the nginx image version1.14.2, but it will not fail immediately if the image version is not available. Kubernetes will attempt to pull the image, and the failure will happen during that step if the image does not exist.
Oracle Linux Reference:Refer to:
* Kubernetes Documentation on Deployments
* kubectl createcommand usage details.
NEW QUESTION # 19
Which two statements are true about systemd system and service manager?
- A. systemd is the first process that starts after the system boots and is the final process left running before the system shuts down.
- B. The service command is used to start and stop system service units.
- C. systemd is backward-compatible with the System V init scripts that were used in earlier versions of Oracle Linux.
- D. systemd reads /etc/system to determine which services to start.
- E. systemd service units expose kernel devices and can be used to implement device-based activation.
Answer: A,E
NEW QUESTION # 20
Which two directories store PAM authentication modules?
- A. /var/lib
- B. /etc/pam.d
- C. /lib64/security
- D. /usr/lib
- E. /lib/security
Answer: C,E
NEW QUESTION # 21
Examine these commands executed by root:
# mkdir -p /jail /jail/bin /jail/lib64
# cp $(which bash) /jail/bin/
# ldd $(which bash)
linux-vdso.so.1 (0x00007ffd574f5000)
libtinfo.so.6 => /lib64/libtinfo.so.6 (0x00007fb458c2c000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fb458a28000)
libc.so.6 => /lib64/libc.so.6 (0x00007fb458666000)
/lib64/ld-linux-x86-64.so.2 (0x00007fb459177000)
# cp /lib64/libtinfo.so.6 /jail/lib64/
# cp /lib64/libdl.so.2 /jail/lib64/
# cp /lib64/libc.so.6 /jail/lib64/
# cp /lib64/ld-linux-x86-64.so.2 /jail/lib64/
# chroot /jail
What is the output from the cd, pwd, and ls commands?
- A. bash-4.4# cd
bash: cd: /root: No such file or directory
bash-4.4# pwd
/
bash-4.4# ls
bin lib64 - B. bash-4.4# cd
bash: cd: command not found
bash-4.4# pwd
bash: pwd: command not found
bash-4.4# ls
bash: ls: command not found - C. bash-4.4# cd
bash: cd: /root: Unable to access chrooted file or directory /root
bash-4.4# pwd
/
bash-4.4# ls
bin lib64 - D. bash-4.4# cd
bash: cd: /root: No such file or directory
bash-4.4# pwd
/root
bash-4.4# ls
bash: ls: command not found
Answer: A
NEW QUESTION # 22
Examine this udev device naming rule which gets processed successfully:
makefile
KERNEL=="hdb", DRIVER=="ide-disk", SYMLINK+="sparedisk"
Which two statements are true?
- A. Symbolic link /dev/sparedisk is created for a device named /dev/hdb or one that has an ide-disk device driver, whichever is discovered first.
- B. Symbolic link /dev/sparedisk is created linking to /dev/hdb and with an ide-disk device driver, thus overwriting existing symbolic links.
- C. The matching device will have the kernel device name /dev/hdb.
- D. Symbolic link /dev/sparedisk is created for a device named /dev/hdb which has an ide-disk device driver if such a device is discovered.
- E. The matching device will be named /dev/sparedisk.
Answer: C,D
NEW QUESTION # 23
Which two statements are true about fdisk?
- A. It can partition disks larger than 2 TB by using a GPT partition table.
- B. It can divide logical devices into one or more block disks called partitions.
- C. It cannot partition disks larger than 2 TB by using a GPT partition table.
- D. fdisk -l displays disk size information for all disks.
- E. It understands GPT, MBR, and HFS partition tables.
Answer: C,D
Explanation:
* Option B (Correct):Thefdisk -lcommand lists information about all available disks, including their sizes, partition tables, and partition details.
* Option E (Correct):fdiskcannot handle disks larger than 2 TB because it is limited to the Master Boot Record (MBR) partitioning scheme. To manage larger disks (over 2 TB), the GUID Partition Table (GPT) is required, andfdiskdoes not fully support GPT.
* Option A (Incorrect):fdiskdoes not support HFS (Hierarchical File System, used by macOS). It primarily supports MBR and has limited support for GPT.
* Option C (Incorrect):fdiskdoes not support partitioning disks larger than 2 TB with GPT; gdiskorpartedshould be used instead.
* Option D (Incorrect):fdiskdoes not divide logical devices into block disks called partitions; it operates on physical storage devices to create partitions.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Managing Disks and Partitions
* man fdiskfor more details on the usage and limitations of thefdiskutility.
NEW QUESTION # 24
Examine the access privileges on this directory:
drwx------ 2 user1 test 4096 Nov 6 10:12 my_directory/
You must enable another user to read and navigate to my_directory. Which command will do this?
- A. setfacl --modify user:user2:r-x my_directory
- B. setfacl --modify group:test:r-- my_directory
- C. setfacl --modify user:user2:r-- my_directory
- D. setfacl -x user:user2 my_directory
- E. setfacl --default --modify user:user2:rw- my_directory
Answer: A
NEW QUESTION # 25
Examine this command and output:
# cat deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
spec:
selector:
matchLabels:
app: nginx
replicas: 2
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.14.2
ports:
- containerPort: 80
Now examine this command which executes successfully:
$ kubectl create -f deployment.yaml
Which two statements are true?
- A. The command creates and guarantees the availability of a specified number of identical pods.
- B. The command specifies port 80 as the port that the container exposes.
- C. The command creates a pod named nginx.
- D. The command creates a deployment named nginx.
- E. The command specifies nginx image version 1.14.2 and will fail if the image version is not available.
Answer: A,B
NEW QUESTION # 26
Examine this command, which executes successfully:
# nmcli con add con-name eth2 type ethernet ifname eth2 \ Ipv6.address 2804:14c:110:ab2f:c3lb:1212:7917:708a/64 \ Ipv6.gateway 2804:14c:110:ab2f::1003 \ Ipv4.address 192.168.0.5/24 ipv4.gateway 192.168.0.254 The eth2 connection does not exist. Which two statements are true?
- A. The configuration is saved in /etc/sysconfig/network.
- B. Ethernet connection eth2 is created.
- C. A static IP address is assigned to the eth2 connection
- D. It configures an automatic IPV6 address.
Answer: B,C
NEW QUESTION # 27
Which two statements are true about kernel boot parameters?
- A. Parameters passed to the kernel from the GRUB 2 menu are persistent and apply to all subsequent reboots.
- B. Boot parameters are defined as values for the GRUB_CMDLINE_LINUX directive in the /etc/default/grub file.
- C. Each kernel version's boot parameters are stored in independent configuration files in /boot/loader/entries.
- D. Boot parameters defined as values for the GRUB_BOOT command-line interface are persistent and apply to all subsequent reboots.
Answer: B,C
NEW QUESTION # 28
You must prevent Ksplice from reapplying updates at the next system reboot. Which two commands or parameters can do this?
- A. uptrack-remove -all
- B. uptrack=0
- C. nouptrack
- D. uptrack-upgrade -n
- E. touch /etc/uptrack/disable
Answer: A,E
Explanation:
Explanation of Answer C:The commanduptrack-remove --allremoves all currently applied Ksplice updates, effectively preventing them from being reapplied upon reboot.
Explanation of Answer E:Creating a file/etc/uptrack/disabledisables Ksplice Uptrack, preventing it from applying any updates at the next system reboot.
NEW QUESTION # 29
You must add an additional swap device and you add this entry to /etc/fstab:
/.swapfile none swap defaults 0 0
Examine these commands and output:
# dd if=/dev/zero of=/.swapfile bs=1024 count=1048576
1048576+0 records in
1048576+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 4.32499 s, 248 MB/s
# swapon -a
swapon: /.swapfile: insecure permissions 0644, 0600 suggested.
swapon: /.swapfile: read swap header failed
Which two actions must you perform to add this swap device?
- A. Initialize the .swapfile file by using the mkswap command.
- B. Assign a label to the .swapfile file by using the swaplabel command.
- C. Use a physical disk partition type of 82 (Linux swap).
- D. Execute swapon -all.
- E. Change defaults to user in the /etc/fstab entry.
- F. Execute swapon -L swapfile /.swapfile after adding a label.
Answer: A,B
Explanation:
To use a file as swap space, it must first be initialized with themkswapcommand. Theddcommand creates an empty file, butmkswapformats this file to be used as swap space. This command writes the necessary swap header to the file, making it recognizable by the system as a valid swap area.
Explanation of Answer D:After initializing the swap file withmkswap, you can optionally assign a label to the swap file using theswaplabelcommand. This is not strictly required, but it can be useful for identifying swap files, especially if you are using multiple swap devices.
NEW QUESTION # 30
Examine this network configuration:
NAME="ens4"
DEVICE="ens4"
ONBOOT=no
NETBOOT=yes
IPV6INIT=yes
BOOTPROTO=none
IPADDR=192.168.2.5
PREFIX=24
GATEWAY=192.168.2.1
TYPE=Ethernet
Which two statements are true after executing nmcli con mod ens4 ipv4.method auto?
- A. ONBOOT value is set to yes.
- B. Interface ens4 is assigned an IP address of 192.168.2.5.
- C. IPADDR value is considered null.
- D. Interface ens4 automatically starts on boot.
- E. BOOTPROTO value is set to dhcp.
- F. ONBOOT value is set to dhcp.
Answer: C,E
Explanation:
Explanation of Answer B:When executingnmcli con mod ens4 ipv4.method auto, theipv4.methodparameter is set toauto, which configures the interface to obtain its IP address using DHCP. This means that theBOOTPROTOvalue in the configuration is set todhcp.
Explanation of Answer D:Whenipv4.methodis set toauto(DHCP), any static IP address specified inIPADDRis considered null because the interface will now obtain its IP address from a DHCP server, making the manually set IP address irrelevant.
NEW QUESTION # 31
Which two statements are true about container technology?
- A. A container application is dependent on the host operating system and kernel version.
- B. Podman requires a running daemon to function and to enable containers to start and run without root permissions.
- C. Containers package an application with the individual runtime stack.
- D. Podman, Buildah, and Skopeo are independent tools to create, run, and manage container applications across compatible Oracle Linux systems.
- E. A container application built on a bare metal system cannot run on virtual machines or cloud instances.
Answer: C,D
NEW QUESTION # 32
......
Prerequisites for Oracle 1Z0-106 Exam
Before you take the exam, you must have the following skills:
You should know how to install, configure, and troubleshoot an Oracle database.
You must know the basics of Oracle security concepts and procedures.
You must be familiar with the Oracle database and its terminology.
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