Cloud and Virtualization Final Exam | Complete Solutions (Verified Answers)

Cloud and Virtualization Final Exam | Complete Solutions (Verified Answers) True or False? A disgruntled employee can harm a company by launching a computer virus, changing or deleting files, or exposing system passwords. True Assume a device manufacturer tests 100 devices. The first device fails at 100 hours. The last device fails at 200 hours. What is the device mean time between failure (MTBF)? 100 20,000 15,000 10,000 A(n) ___________________ provides users with a few minutes of battery backup power so the users can save their work and shut down their systems in an orderly way. B-Pack uninterruptible power supply (UPS) redundant array of independent (or inexpensive) disks (RAID) None of these is correct. True or False? Rather than simply store a file on one drive, the RAID system stores the data across several drives. True True or False? A disaster recovery plan (DRP) identifies risks to a company and ways to mitigate those risks. True Common components of a service-level agreement (SLA) include which of the following? None of these is correct. Mean time between failure (MTBF) All of these are correct. Throughput Uptime percentage ____________ describes the policies, procedures, and actions taken by an organization to ensure the availability of critical business functions to employees, customers, and other key stakeholders. Scalability Hypervisor injection None of these is correct. Virtualization Business continuity True or False? Many data centers have diesel-powered generators to produce power in the event of a long-term outage. True True or False? A device's mean time between failure (MTBF) rating provides an estimate of how long the device should last. True True or False? Database replication creates two live copies of databases on separate servers. If one database fails, the other can immediately take over operations. true Which of the following is a consideration when using web services? The solution must be developed and deployed by a reputable company. All of these are correct. The solution cannot be dynamically changed or updated without the company's notification and approval. The solution must be scalable to meet potential demand. The solution must provide secure communications to avoid threats such as a man-in-the-middle attack. True or False? Web services execute faster than equivalent local functional calls. False True or False? Within a services-oriented architecture (SOA) application, a program exchanges messages with a web service to call a specific method and then normally waits for the web service to return its result. True True or False? Within a services-oriented architecture (SOA), programs make remote-procedure calls to services that reside on servers distributed across the web. True True or False? Using a load-balancing model, developers can scale a web-service solution. True Which of the following allows containers on different hosts to communicate without requiring changes to the host-level routing? Overlay Bridge ipvlan Host Which of the following steps must be performed first to create a running container using a Dockerfile? The container is activated using a single "docker run" command. The container can be started with a specified command to run. The image is built using the steps defined in the Dockerfile. The container is created using an image and additional configuration information. The top-level Docker Compose element that describes the Docker containers that are a part of the application is called what? Networks Application host Volumes Services Which of the following enables containers on the same host to communicate? Overlay macvlan Bridge Host When you need to specify and accomplish your deployment with a multi-container application in fewer commands, what should you use? Docker build Docker multi-tool Docker utility Docker compose Common components within a service-level agreement (SLA) include which of the following? Technical support operations (e.g., call-time delay and event response time) System uptime, normally expressed as a percentage, such as 99.9 percent All of these are correct. Run-time monitoring capabilities and event notification Billing policy for various types of resource use (e.g., CPUs, disk space, and databases) To reduce risk, companies may ask a cloud-solution provider to place their site's source code in a: cloud vault. black box. virtual window. source-code escrow. True or False? After deploying a cloud-based solution, an IT staff member should periodically audit key processing to confirm that the application is providing correct results. True True or False? Before deploying a solution to a cloud provider, a manager should be aware of the provider's multitenant use, e-commerce processing, employee screening, and use of encryption. True True or False? By moving a solution to the cloud, IT managers shift a great deal of day-to-day management from their in-house department to the cloud-solution provider. True Which of the following requires credentials to gain access for all cloud-based resources? Anti-trust model Zero-trust model Access management model Dia model In cloud-based architectures, load balancers, origin servers, database servers, and monitoring systems are all provisioned from what? Virtual machines Cloud providers On-site servers Local ISP Which of the following is a global principle that should be remembered when designing a secure cloud infrastructure? Data needs to be protected only while in transit. Configuration of machines needs to be automated. Access to all resources should not allow for auditing. Access to all resources must be controlled. How does the SCAP Workbench connect to target machines to perform scans? SCAP Workbench uses ssh to connect to the target. SCAP Workbench uses http to connect to the target. SCAP Workbench uses a dedicated agent that must be installed on the target. SCAP Workbench uses rsync to connect to the target. A key component of a _______ is including ways to automatically check the active systems to make sure that the _______ are being followed. cloud-based system; network diagrams secure architecture; policies secure architecture; network diagrams network protocol; policies ____________ occurs when a vendor makes it difficult for a company to switch to another provider, even if the vendor has failed to fulfill the service-level agreement (SLA). Cloud bursting Vendor lock-in Virtual locking None of these is correct. True or False? When moving a solution to the cloud, you may find that hiring a consultant saves you money in the long run and helps you to avoid costly mistakes. True The process of taking an application to the cloud is known as: storming. cloud bursting. cloud migration. clouding. True or False? Before moving an application to the cloud and risk facing scaling issues, be sure that you monitor your application to identify its key performance indicators. True True or False? Given the cloud's cost-effective ability to deploy solutions, training may be one of the more expensive aspects of a cloud migration. True True or False? From a technical perspective, an application can be moved to the cloud quickly. True True or False? Cloud bursting is most common for seasonal demand, or event-driven demand, such as the load on Google Maps when an earthquake or other natural disaster occurs. True True or False? To reduce the risk of vendor lock-in, many companies seek providers who support "open" solutions, which are built using open-source software such as Linux, PHP, and MySQL. True When moving to the cloud, which of the following budget factors should you consider? Current payroll costs for existing site administrators and projections for possible staff reduction opportunities All of these are correct. Power and air conditioning costs Rent Server and data-storage costs When an on-site application encounters increased user demand, an application can expand into the cloud through a process called: storming. virtualization. All of these are correct. cloud bursting. The _____________ consists of apps and webpages that originate from sites within the cloud from which users download, or with which they interact via a mobile device. mobile cloud 5G cloud iCloud exocloud Beyond traditional phone calls, users use smartphones to do which of the following? Perform GPS-based navigational operations Place face-to-face video calls to phones and computers Browse websites All of these are correct. Exchange text messages with other users Within a mobile environment, a _____________ is an HTML-based solution that adjusts its output for mobile device screen sizes. None of these is correct. Web responsive app native-mode app proxy A(n) _________ is an environment that consists of living and nonliving things with which one interacts. responsive web application mobile cloud ecosystem None of these is correct. True or False? If you ask roomful of cloud computing experts whether the cloud is driving the growth of mobile computing or mobile computing is driving the growth of the cloud, the results will be mixed. True True or False? When developers use HTML to create Web and mobile solutions, a key consideration is screen size. True True or False? If you list inventions that have made the biggest impact on society, from the automobile to airplanes to television and the telephone, the cell phone may (and likely will) eventually top the list. True True or False? - An iOS app or an Android app are examples of native-mode solutions. True True or False? You should not expect to use traditional webpages as mobile solutions. You should optimize your web solutions and then optimize your mobile solutions. True Items developers must consider for mobile devices include: None of these is correct. download performance. display size. All of these are correct. security. _______________ is a subset of corporate governance that includes the policies, procedures, and controls that relate to IT use and deployment, performance, return on investment, and risk mitigation. None of these is correct. IT governance Business continuity Risk mitigation True or False? Companies must audit the source of the values they measure and report using internal or external auditors. True False True or False? Following the .com crash and corporate scandals such as Enron, Tyco, and WorldCom, pressures emerged from the government, shareholders, and numerous other stakeholders for companies to increase their financial oversight to reduce the opportunity for fraud and to restore confidence in corporate financial reporting. True False True or False? A key place to begin the cloud-governance process is with the service-level agreement (SLA). True True or False? Internal controls allow a company auditor to inspect data values at key stages. True Even though Docker containers may have different IPs than the host on which they are running, using traditional firewall-based network security on them can be easily maintained. False. The ability to move Docker containers among hosts makes managing firewall rules more complex. False. Firewall rules on the host cannot be used to manage network traffic to the containers. True. Most firewalls automatically propagate appropriate rules to the Docker containers. True. Part of the Docker infrastructure includes a firewall engine that automatically adapts to the host rules. In a real production environment, end users should be able to troubleshoot connections to the origin server by accessing it directly through the Docker container host's IP