Section 2: Network Implementation Flashcards
What is static routing, and what are its key characteristics?
Definition: Manually set routes that don’t change unless updated.
Key Characteristics:
* Manual Entry: Configured directly on the router.
* Low Overhead: No extra CPU or bandwidth needed.
* Consistent Paths: Provides consitent and predictable routes.
What are the pros, cons, and common use cases for static routing?
Pros: Simple, resource-efficient, secure.
Cons: Not scalable, needs manual updates, no auto reouting if an outage occurs.
Use Cases: Small networks, stub networks, controlled paths for security.
What are BGP, EIGRP, and OSPF, what do they stand for and what are they used for?
BGP (Border Gateway Protocol) :
* Connects large networks (e.g., ISPs) on the internet.
* Uses AS numbers and chooses the shortest path for routing.
EIGRP (Enhanced Interior Gateway Routing Protocol) :
* A Cisco-specific protocol for fast routing within a single organization.
* Uses bandwidth and delay to pick the best path, adapts quickly to changes.
OSPF (Open Shortest Path First) :
* A link-state protocol used for finding the best route inside a large network.
* Uses the Shortest Path First (SPF) algorithm and divides the network into areas for efficiency.
What is dynamic routing, and what are its key characteristics?
Definition: Routes are automatically learned and updated using routing protocols.
Key Characteristics:
* Automated Updates: Routes change based on network status.
* Scalable: Handles large and complex networks easily.
* Protocols Used: OSPF, EIGRP, and BGP
What are the pros, cons, and common use cases for dynamic routing?
Pros: Adapts to changes, reduces manual effort, scales well.
Cons: Higher CPU and bandwidth use, more complex setup.
Use Cases: Large, changing networks; environments needing fast failover and adaptation.
What is route selection, and what factors influence it?
Route Selection: Choosing the best path when multiple routes are available.
Key Factors:
* Administrative Distance (AD): Trust level of the route source.
* Prefix Length: The most specific (longest) match is preferred.
* Metric: Value used to determine the best path.
What are FHRP, VIP, and subinterfaces in networking?
FHRP (First Hop Redundancy Protocol): Provides backup gateways for failover. Ensures a backup router is ready to take over if the main router goes down.
Virtual IP (VIP): A shared IP address used by multiple devices for redundancy.
Subinterfaces: Creates virtual interfaces on a single physical port, allowing it to handle traffic from multiple VLANs.
