A core function of DLP is protecting against sensitive information exposure. DLP solutions identify, monitor, and control sensitive data such as personal information, payment card data, intellectual property, credentials, source code, or regulated records. DLP may inspect content, file types, labels, patterns, user context, and destination risk to determine whether data should be allowed, blocked, encrypted, quarantined, or logged. Encrypting all transmissions is not the general definition of DLP; encryption may be one enforcement action, but DLP decisions are content-aware and policy-based. System backups support recovery and resilience, not data loss prevention. Enhancing network speed is a performance function. DLP is important because data can leave through email, web uploads, cloud storage, removable media, or compromised accounts. Effective DLP helps reduce both accidental leakage and intentional exfiltration. Reference/topics: Network Security 3.5, DLP; Identity Security 7.2.3, least privilege.