Title: Explain basic routing concepts and protocols.
Course: Cybersecurity Systems Technology, Advanced (10109-IV) > Section: Exploring Network Architecture

Explanation could include the following:

- Loopback interface
- Routing loops
- Routing tables
- Static vs. dynamic routes
- Default route
- Distance vector routing protocols
  - Routing Internet Protocol, version 2 (RIPv2)

- Hybrid routing protocols
  - Border Gateway Protocol (BGP)

- Link state routing protocols
  - Open Shortest Path First (OSPF)
  - Intermediate System to Intermediate System (IS-IS)

- Interior vs. exterior gateway routing protocols
- Autonomous system numbers
- Route redistribution
- High availability
  - Virtual Router Redundancy Protocol (VRRP)
  - Virtual IP
  - Hot Standby Router Protocol (HSRP)

- Route aggregation
- Routing metrics
  - Hop counts
  - Maximum Transmission Unit (MTU), bandwidth
  - Costs
  - Latency
  - Administrative distance
  - Shortest Path Bridging (SPB)

Process/Skill Questions:

- How would a router’s loopback interface be characterized? Is it virtual or physical?
- What does a routing table determine?
- What is a hop count?