CompTIA CAS-004 Questions Answers

 Disabling file exchange can help to minimize data leakage by preventing users from sharing sensitive documents or data through the videoconferencing platform. Enabling watermarking can help to maintain customer trust and ensure non-repudiation by adding a visible or invisible mark to the video stream that identifies the source or owner of the content. Enabling the user authentication requirement can help to secure the videoconferencing sessions by verifying the identity of the participants and preventing unauthorized access. Verified References:

• https://www.rev.com/blog/marketing/follow-these-7-video-conferencing-security-best-practices
• https://www.paloaltonetworks.com/blog/2020/04/network-video-conferencing-security/
• https://www.megameeting.com/news/best-practices-secure-video-conferencing/

The indicator that shows when a company might not be viable after a disaster is the maximum tolerable downtime (MTD). MTD is the maximum amount of time that a business process or function can be disrupted without causing unacceptable consequences for the organization. MTD is a key metric for business continuity planning and disaster recovery, as it helps determine the recovery time objective (RTO) and the recovery point objective (RPO) for each process or function. If the actual downtime exceeds the MTD, the organization may face severe losses, reputational damage, regulatory penalties, or even bankruptcy. Verified References:

• https://www.techtarget.com/searchdisasterrecovery/definition/maximum-tolerable-downtime
• https://www.techtarget.com/searchdisasterrecovery/definition/recovery-time-objective
• https://www.techtarget.com/searchdisasterrecovery/definition/recovery-point-objective

The organization is implementing homomorphic encryption. Homomorphic encryption is a type of encryption that allows computations to be performed on encrypted data without decrypting it first. This means that the organization can analyze the customers’ data and deliver analysis results without being able to see the raw data, preserving the privacy and confidentiality of the customers. Homomorphic encryption can enable various applications, such as cloud computing, machine learning, and data analytics, that require processing sensitive data without compromising security. Verified References:

• https://www.techtarget.com/searchsecurity/definition/homomorphic-encryption
• https://learn.microsoft.com/en-us/azure/security/fundamentals/encryption-at-rest
• https://www.ibm.com/topics/homomorphic-encryption

The root cause of this issue is that the iOS keychain imported only the client public and private keys, but not the CA certificate. A PKCS#12 file (.p12 or .pfx) is a file format that contains a certificate and its private key, optionally protected by a password. A PKCS#12 file can also contain intermediate certificates or root certificates that are needed to verify the certificate chain. However, when importing a PKCS#12 file into the iOS keychain, only the certificate and its private key are imported, not the CA certificate. This means that the iOS device cannot verify the authenticity of the certificate, and displays the error message “mbedTLS: ca certificate undefined”. To fix this issue, the CA certificate needs to be imported separately into the iOS keychain, either manually or using a configuration profile. Verified References:

• https://developer.apple.com/documentation/devicemanagement/certificatepkcs12
• https://support.apple.com/guide/deployment/distribute-certificates-depcdc9a6a3f/web
• https://openvpn.net/faq/how-do-i-use-a-client-certificate-and-private-key-from-the-ios-keychain/