Section 19: Cloud Technologies

Question 1

Serverless Computing

Answer 1

FAAS (Function as a service)
Runs functions within virtualized runtime containers in a cloud

Microservice
▪ Designed to take an input, do some processing, and produce an output
o If demand increases, the FAAS starts up additional containers.

Question 2

Software-Defined Networking (SDN)

Answer 2

Software-based controllers or APIs to communicate with underlying
hardware infrastructure and direct traffic on a network

Question 3

Advantages of SDN

Answer 3

Advantages of SDN
▪ Ability to mix and match products from different vendors
▪ Fully automated deployments of a network within the cloud
▪ Provisioning of network links, appliances, and servers

o SDN disadvantages
▪ If we lose connectivity to the SDN controller, then the entire network could go down
▪ The use of a centralized controller in SDNs creates a real target for
attackers

Question 4

Cloud Access Security Broker (CASB)

Answer 4

o Mediates user access to cloud services across all devices

Middleman, similar in concept to a Reverse Proxy