Exam Essentials

Know two ways you can filter traffic using an access control list. Access control lists can filter traffic by IP address or MAC address.

Know which protocols can be used for tunneling and encryption of data. Tunneling and encryption protocols include SSL, VPN, L2TP, PPTP, GRE, and IPSec.

Know which services allow you to remotely access computers across a network. RAS, RDP, PPP, PPPoE, and ICA are remote-access services and protocols.

Know different user-authentication protocols used on networks. User-authentication protocols and systems include PKI, Kerberos, RADIUS, TACACS+, 802.1X, CHAP, MS-CHAP, and EAP.

Understand the operation of Network Access Control systems such as Cisco Network Admission Control. When devices attempt to access the network, the devices are examined closely, which is called a posture assessment. When the assessment is complete and is positive, admission is granted.