Need to know
Router Internal Components Overview
After completing this topic, you should be able to distinguish between the major internal components of a router; describe the functions of ROM in a Cisco router.
Syslog Overview and Configuration
Match elements of syslog messages to their descriptions in an example. Configure syslog server on Cisco IOS devices.
PPP authentication. PAP vs CHAP
Describe PAP and CHAP authentication and configure CHAP authentication for PPP.
Developing an Optimum Design for Layer 2
Typical causes of network congestion. Presenting the bridge and the switch as alternative options to alleviate those issues.
Exploring the Packet Delivery Process
How packets go through devices at layers 1, 2, and 3. Mapping between layer 2 and 3 addresses by using ARP. Common tools to determine the path across the network.
Understanding The TCP/IP Transport Layer
How layer 4 can provide connection-oriented and connection-less services via TCP and UDP. A key component of TCP is flow control - sequence numbers, acknowledgement numbers, and slider windows.