Networking professionals looking to improve their credentials may be interested in earning the Cisco Certified Network Professional (CCNP) designation, a certificate that proves the holder's ability to work with medium-sized computer networks. These networks can range from between 100 to 500 networked devices. This certificate also shows mastery of protocols and technology such as VPNs and network security. Prior to earning a CCNP, a candidate must earn a Cisco Certified Network Associate (CCNA) certificate. CCNP holders earn a median of $78,548 a year.