Question-38: The process of regaining access and functionality to an organization's information technology infrastructure following an event such as a natural disaster, a cyber attack, or even business disruptions caused by the COVID-19 pandemic is referred to as disaster recovery and is carried out by an organization. A strategy for disaster recovery (DR) could include any number of different disaster recovery (DR) strategies. Your organization is working on establishing their disaster recovery strategy, and as part of that process, they are attempting to duplicate their production MySQL database from their own data centre to their Google Cloud Platform project utilising a VPN connection to Google Cloud. They are having difficulties with latency, as well as a minor bit of packet loss, both of which are causing the replication to be disrupted. What options do they have?
A. Change their replication settings so that UDP is used.
B. You should configure a dedicated interconnect to the Google Cloud.
C. Perform a daily backup of their database via Google Cloud SQL.
D. Add supplementary VPN connections and load-balance among them.
E. Transfer the duplicated transaction to the Google Cloud Pub/Sub system.
Correct Answer
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: 2 Explanation: It's a problem with the latency. Adding another VPN tunnel won't cure this problem, unfortunately. If there were just a problem with throughput, a VPN would be sufficient; but, to reduce latency, you would need to move to layer 2. Imagine stating anything like this to the person in charge of your project: So merely to fix this problem, we are going over a Dedicated Interconnect. Configure Cloud from Google Interconnect Dedicated to the User The company may purchase a 10G interconnect connection for $1700 per month that comes with a 99.9% service level agreement. It's a rather low budget for something as solid as database migration. The only condition for the firm is its position in close proximity to the colocation facility (peering edge network). A - UDP is unreliable and does not ensure that messages will be delivered. C - daily replication does not in any way fix the issue (although it might serve as a temporary workaround), and as there has been no gain in bandwidth, replication may likewise fail. D: The addition of VPN tunnels with a bandwidth of 1.5 Gbps times N might make the issue better (although not the VPN connections themselves, which are load balanced) E - using Cloud Pub/Sub as a solution is a cumbersome process. Would need additional protocol overhead to be performed in order to provide this Proxy service. Construction of Virtual Private Networks with High Throughput This lesson will teach you how to construct secure virtual private networks (VPNs) with high throughput, as well as how to evaluate their speeds. A standard and essential need is to have encrypted communication between Google Cloud and any other clouds or on-premises systems. To help you accomplish this objective, Google Cloud makes it simple for you to set up protected virtual private networks (VPNs) using the Internet Protocol Security (IPsec) protocol. In the event that a single tunnel is unable to offer the required throughput, Google Cloud may easily and seamlessly split traffic over numerous tunnels in order to provide extra capacity.