Leveraging cryptographic solutions to protect data that is in use ensures the data is encrypted:

Options:

A when it is passed across a local network.
B in memory during processing
C when it is written to a system's solid-state drive.
D by an enterprise hardware security module.

A company publishes several APIs for customers and is required to use keys to segregate customer data sets.

Which of the following would be BEST to use to store customer keys?

Options:

A A trusted platform module
B A hardware security module
C A localized key store
D A public key infrastructure

which security measure can be used to generate and store cryptographic keys?

i think the answer is option C ? but need a validation 

A company is outsourcing to an MSSP that performs managed detection and response services. The MSSP requires a server to be placed inside the network as a log aggregate and allows remote access to MSSP analyst. Critical devices send logs to the log aggregator, where data is stored for 12 months locally before being archived to a multitenant cloud. The data is then sent from the log aggregate to a public IP address in the MSSP datacenter for analysis.

A security engineer is concerned about the security of the solution and notes the following.

* The critical devise send cleartext logs to the aggregator.

* The log aggregator utilize full disk encryption.

* The log aggregator sends to the analysis server via port 80.

* MSSP analysis utilize an SSL VPN with MFA to access the log aggregator remotely.

* The data is compressed and encrypted prior to being achieved in the cloud.

Which of the following should be the engineer's GREATEST concern?

Options:

A Hardware vulnerabilities introduced by the log aggregate server
B Network bridging from a remote access VPN
C Encryption of data in transit
D Multinancy and data remnants in the cloud