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QUESTION NO: 1
After performing maintenance on an Oracle Linux compute instance the system is returned to a running state You attempt to connect using SSH but are unable to do so. You decide to create an instance console connection to troubleshoot the issue.
Which three tasks would enable you to connect to the console connection and begin troubleshooting?
A. Stop the compute Instance using the Oracle cloud Infrastructure (OCI) Command Line interface
(CLI).
B. Reboot the compute instance using the Oracle Cloud Infrastructure (OCI) Management Console
C. Upload an API signing key for console connection authentication.
D. edit the Linux boot menu to enable access to console.
E. Use SSH to connect to the public: IP address of the compute Instance and provide the console connection OCID as the username.
F. Use SSH to connect to the service endpoint of the console connection service
Answer: B,D,F
Explanation:
The Oracle Cloud Infrastructure Compute service provides console connections that enable you to remotely troubleshoot malfunctioning instances, such as:
An imported or customized image that does not complete a successful boot.
A previously working instance that stops responding.
the steps to connect to console and troubleshoot the OS Issue
1- Before you can connect to the serial console you need to create the instance console connection.
Open the navigation menu. Under Core Infrastructure, go to Compute and click Instances.
Click the instance that you're interested in.
Under Resources, click Console Connections.
Click Create Console Connection.
Upload the public key (.pub) portion for the SSH key. You can browse to a public key file on your computer or paste your public key into the text box.
Click Create Console Connection.
When the console connection has been created and is available, the status changes to ACTIVE.
2- Connecting to the Serial Console
you can connect to the serial console by using a Secure Shell (SSH) connection to the service endpoint of the console connection service Open the navigation menu. Under Core Infrastructure, go to
Compute and click Instances.
Click the instance that you're interested in.
Under Resources, click Console Connections.
Click the Actions icon (three dots), and then click Copy Serial Console Connection for Linux/Mac.
Paste the connection string copied from the previous step to a terminal window on a Mac OS X or
Linux system, and then press Enter to connect to the console.
If you are not using the default SSH key or ssh-agent, you can modify the serial console connection string to include the identity file flag, -i , to specify the SSH key to use. You must specify this for both the SSH connection and the SSH ProxyCommand, as shown in the following line:
ssh -i /<path>/<ssh_key> -o ProxyCommand='ssh -i /<path>/<ssh_key> -W %h:%p -p 443...
Press Enter again to activate the console.
3- Troubleshooting Instances from Instance Console Connections
To boot into maintenance mode
Reboot the instance from the Console.
When the reboot process starts, switch back to the terminal window, and you see Console messages start to appear in the window. As soon as you see the GRUB boot menu appear, use the up/down arrow key to stop the automatic boot process, enabling you to use the boot menu.
In the boot menu, highlight the top item in the menu, and type e to edit the boot entry.
In edit mode, use the down arrow key to scroll down through the entries until you reach the line that starts with either linuxefi for instances running Oracle Autonomous Linux 7.x or Oracle Linux 7.x, or kernel for instances running Oracle Linux 6.x.
At the end of that line, add the following:
init=/bin/bash
Reboot the instance from the terminal window by entering the keyboard shortcut CTRL+X.
QUESTION NO: 2
Multiple departments In your company use a shared Oracle Cloud Infrastructure (OCI) tenancy to Implement their projects. You are in charge of managing the cost of OCI resources in the tenancy and need to obtain better Insights Into department's usage.
Which three options can you implement together to accomplish this?
A. Create a budget that matches your commitment amount and an alert at 100 percent of the forecast
B. Use the billing cost tracking report to analyze costs
C. Set up a consolidated budget tracking lags to analyze costs in ,1 granular manner
D. Set up a tag default that automatically applies tags to all specified resources created In a compartment then use these tags for cost analysis.
E. Set up different compartments for each department then track and analyze cost per compartment
Answer: A,D,E
Explanation:
budgets
You can use budgets to track costs in your tenancy. After creating a budget for a compartment, you can set up alerts that will notify you if a budget is forecast to be exceeded or if spending surpasses a certain amount.
OCI Cost Analysis
* Visualization tools Help understand spending patterns at a glance
* Filter costs by Date, Tags and Compartments
* Trend lines show how spending patterns are changing
* To use Cost Analysis you must be a member of the Administrators group
QUESTION NO: 3
A startup company is looking for a solution for processing of data transmitted by the IOT devices fitted to transport vehicles that carry frozen foods. The data should be consumed and processed in real time. The processed data should be archived to OCI Object Storage bucket. and use
Autonomous Data warehouse (ADW) to handle analytics.
Which architecture will help you meet this requirement?
A. Create an OCI Object Storage bucket to collect the incoming biometric data from the smart pet collar Fetch the data horn OC\ Object storage to OCI Autonomous Data Warehouse (ADW) every day and run analytics Jobs with it
B. Use OCI Streaming Service to collect the incoming biometric data. Use an open source Hadoop cluster to analyze the data horn streaming service. Store the results to OCI Autonomous Data warehouse (ADW) to handle complex analytics
C. Use OCI Streaming Service to collect the incoming biometric data. Use Oracle Functions to process the date and show the results on a real-time dashboard and store the results lo OCI Object Storage
Store the data In OCI Autonomous Data warehouse (ADW) to handle analytics.
D. Launch an open source Hadoop cluster to collect the Incoming biometrics data Use an Open source Fluentd cluster to analyze the- data me results to OCI Autonomous Transaction Processing
(ADW)to handle complex analytics
Answer: C
Explanation:
Real-time processing of high-volume streams of data
- OCI Streaming service provides a fully managed, scalable, durable storage option for continuous, highvolume streams of data that you can consume and process in real-time
- Use cases
Log and Event data collection
Web/Mobile activity data ingestion
IoT Data streaming for processing and alerts
Messaging: use streaming to decouple components of large systems
- Oracle managed service with REST APIs (Create, Put, Get, Delete)
- Integrated Monitoring
QUESTION NO: 4
A cloud consultant is working on implementation project on OCI. As part of the compliance requirements, the objects placed in object storage should be automatically archived first and then deleted. He is testing a Lifecycle Policy on Object Storage and created a policy as below:
[ { "name": "Archive_doc", "action": "ARCHIVE", "objectNameFilter": { "inclusionPrefixes": "doc"] },
"timeAmount": 5, "timeunit": "DAYS", "isEnabled": true },
{ "name": "Delete_doc", "action": "DELETE", "objectNameFilter": "inclusionPrefixes": [ "doc"]
1."timeAmount": 5, "timeunit": "DAYS", "isEnabled": true }
What will happen after this policy is applied?
A. All objects with names starting with "doc" will be deleted after 5 days of object creation
B. All the objects having file extension ".doc" will be archived for 5 days and will be deleted 10 days after object creation
C. All the objects with names starting with "doc" will be archived 5 days after object creation and will be deleted 5 days after archival
D. All the objects having file extension ".doc" will be archived 5 days after object creation
Answer: A
Explanation:
Object Lifecycle Management works by defining rules that instruct Object Storage to archive or delete objects on your behalf within a given bucket. A bucket's lifecycle rules are collectively known as an object lifecycle policy.
You can use a rule to either archive or delete objects and specify the number of days until the specified action is taken.
A rule that deletes an object always takes priority over a rule that would archive that same object.
QUESTION NO: 5
A retail company runs their online shopping platform entirely on Oracle cloud Infrastructure
(OCI). This is a 3-tier web application that Includes a Mbps Load Balancer. Virtual Machine Instances for web and an Oracle DB Systems Virtual Machine Due to unprecedented growth, they noticed an
Increase in the Incoming traffic to their website and all users start getting 503 (Service Unavailable) errors.
What is the potential problem in this scenario?
A. All the web servers are too busy and not able to answer any request from users.
B. The Database Is down hence users can not access the web site
C. You did not configure a Service Gateway to allow connection between web servers and load
Balance
D. The Traffic Management Policy is not set to load Balancer the traffic to the web servers.
E. The Load Balancer health check status Indicates critical situation for half of the backend webservers
Answer: A
Explanation:
A 503 Service Unavailable Error is an HTTP response status code indicating that a server is temporarily unable to handle the request. This may be due to the server being overloaded or down for maintenance.
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Updated: May 28, 2022