Cloud Computing & Virtualization Flashcards

Which cloud service model gives a customer virtual machines, storage, and networks while the customer manages the operating systems?

Answer: IaaS

IaaS provides virtualized infrastructure, and the customer manages the OS and everything above it.

Serverless computing (Function as a Service) is best described as:

Answer: Running code in response to events while the provider manages all servers and scaling

Servers still exist in serverless computing, but the provider fully manages them and bills per execution.

A business keeps an identical copy of its systems in a second geographic cloud region in case the main region fails. This is mainly a strategy for:

Answer: Disaster recovery and business continuity

Replicating to another region lets services keep running or recover quickly after a regional outage.

Which component lets multiple virtual machines on the same host communicate with each other as if they were plugged into a physical switch?

Answer: Virtual switch (vSwitch)

A virtual switch handles network traffic between VMs inside the hypervisor.

What is 'vendor lock-in' in cloud computing?

Answer: Dependence on one provider's proprietary services that makes switching costly or difficult

Proprietary APIs and data formats can make it expensive to move to a different provider.

A technician's workstation shows a certificate or connection error when it tries to transmit test data to a remote server. What is the best first step?

Answer: Check the network connection and the system date and time, then follow the vendor's support procedures

Connection and certificate errors are often caused by network problems or an incorrect system clock, and the vendor's procedures should be followed.

Which statement about virtualization's benefit to an organization is MOST accurate?

Answer: It consolidates multiple workloads onto fewer physical servers, improving use of hardware

Server consolidation is a main benefit because it uses hardware more efficiently and lowers costs.