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CV0-003考試資訊：CompTIA Cloud+ Certification Exam考試最新發布|更新的CompTIA CV0-003指南
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CV0-003指南 - CV0-003權威認證
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最新的 CompTIA Cloud+ CV0-003 免費考試真題 (Q226-Q231):
問題 #226
Once a year, a company's private cloud experiences increased activity. The company has a disaster recovery site that is hosted in a public cloud. To avoid investment in additional hardware, which of the following actions would BEST address this issue?
- A. Manually add memory and CPU to existing VMs, and remove them when usage is back to normal.
- B. Activate the disaster recovery site, and deactivate it when usage is back to normal.
- C. Create a new backup site and decommission it when usage is back to normal.
- D. Configure cloud bursting to spin up new VMs automatically and terminate them when usage is back to normal.
答案：B
問題 #227
A systems administrator would like to reduce the network delay between two servers.
Which of the following will reduce the network delay without taxing other system resources?
- A. Configure a VPN tunnel between the servers
- B. Decrease the MTU size on both servers
- C. Enable compression between the servers
- D. Adjust the CPU resources on both servers
答案：B
解題說明：
The maximum transmission unit (MTU) is the largest size of a packet or frame that can be sent over a network. Decreasing the MTU size on both servers can reduce the network delay between them, as it can reduce the fragmentation and reassembly of packets, improve the transmission efficiency, and avoid packet loss or errors. Decreasing the MTU size can also avoid taxing other system resources, as it does not require additional CPU, memory, or disk resources. Reference: CompTIA Cloud+ Certification Exam Objectives, page 16, section 3.2
問題 #228
A company has decided to scale its e-commerce application from its corporate datacenter to a commercial cloud provider to meet an anticipated increase in demand during an upcoming holiday.
The majority of the application load takes place on the application server under normal conditions. For this reason, the company decides to deploy additional application servers into a commercial cloud provider using the on-premises orchestration engine that installs and configures common software and network configurations.
The remote computing environment is connected to the on-premises datacenter via a site-to-site IPSec tunnel.
The external DNS provider has been configured to use weighted round-robin routing to load balance connections from the Internet.
During testing, the company discovers that only 20% of connections completed successfully.
INSTRUCTIONS
Review the network architecture and supporting documents and fulfill these requirements:
Part 1:
Analyze the configuration of the following components: DNS, Firewall 1, Firewall 2, Router 1, Router 2, VPN and Orchestrator Server.
Identify the problematic device(s).
Part 2:
Identify the correct options to provide adequate configuration for hybrid cloud architecture.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Part 1:
Cloud Hybrid Network Diagram
Part 2:
Only select a maximum of TWO options from the multiple choice question
答案：
解題說明：
See explanation below.
Explanation:
Part 1: Router 2
The problematic device is Router 2, which has an incorrect configuration for the IPSec tunnel. The IPSec tunnel is a secure connection between the on-premises datacenter and the cloud provider, which allows the traffic to flow between the two networks. The IPSec tunnel requires both endpoints to have matching parameters, such as the IP addresses, the pre-shared key (PSK), the encryption and authentication algorithms, and the security associations (SAs) .
According to the network diagram and the configuration files, Router 2 has a different PSK and a different address space than Router 1. Router 2 has a PSK of "1234567890", while Router 1 has a PSK of
"0987654321". Router 2 has an address space of 10.0.0.0/8, while Router 1 has an address space of
192.168.0.0/16. These mismatches prevent the IPSec tunnel from establishing and encrypting the traffic between the two networks.
The other devices do not have any obvious errors in their configuration. The DNS provider has two CNAME records that point to the application servers in the cloud provider, with different weights to balance the load.
The firewall rules allow the traffic from and to the application servers on port 80 and port 443, as well as the traffic from and to the VPN server on port 500 and port 4500. The orchestration server has a script that installs and configures the application servers in the cloud provider, using the DHCP server to assign IP addresses.
Part 2:
The correct options to provide adequate configuration for hybrid cloud architecture are:
* Update the PSK in Router 2.
* Change the address space on Router 2.
These options will fix the IPSec tunnel configuration and allow the traffic to flow between the on-premises datacenter and the cloud provider. The PSK should match the one on Router 1, which is "0987654321". The address space should also match the one on Router 1, which is 192.168.0.0/16.
B. Update the PSK (Pre-shared key in Router2)
E. Change the Address Space on Router2
問題 #229
When the cache receives write data from the hosts, which of the following does the controller send back to the host?
- A. Footer
- B. Acknowledgement
- C. Header
- D. Request
答案：B
問題 #230
A systems administrator is implementing a new version of a company's primary human-resources application.
An upgrade will be performed on the production server, as there is no development environment. The administrator needs to have a plan in case something goes wrong with the upgrade. Which of the following will work best to ensure a quick rollback in case an issue arises?
- A. An application-level backup
- B. A differential backup
- C. A production snapshot
- D. A full backup
答案：C
解題說明：
A production snapshot is a point-in-time copy of the state and data of a production server or instance. It can be used to restore the server or instance to the exact state it was in when the snapshot was taken, in case of a failure, error, or corruption. A production snapshot can help to ensure a quick rollback in case an issue arises during an application upgrade, as it can revert the changes made by the upgrade and restore the previous version of the application. A production snapshot can also preserve the configuration and settings of the server or instance, as well as the application data and dependencies. A production snapshot is different from a backup, which is a copy of the data only, and may not include the state or configuration of the server or instance. References: CompTIA Cloud+ CV0-003 Study Guide, Chapter 2: Deploying a Cloud Environment, page 75-76; Snapshots vs Backups: Key Differences and Similarities.
問題 #231
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