An administrator sets up CHAP on an iSCSI client to provide which of the following?

CHAP provides authentication, not encryption; IPsec or other transport layer security protocols are used for data encryption in iSCSI.

CHAP does not manage or authorize encryption keys; its role is solely for identity verification.

CHAP does not contribute to high availability; multipathing (MPIO) or redundant network connections are used for that purpose in iSCSI.

CHAP (Challenge-Handshake Authentication Protocol) is a security protocol used in iSCSI to authenticate the initiator (client) to the target (storage server), and optionally vice-versa. By exchanging a shared secret in a challenge-response manner, CHAP verifies the identity of the client, thus providing authentication for secure access to remote data storage.