Topic #3: The Architecture of the Internet Flashcards
Five Fundamental Design Principles of the CISCO Digital Network Architecture
Virtualize Everything
Designed for Automation
Pervasive Analytics
Service Management Delivered from the Cloud
Open, extensible, programmable at every layer
Four Fundamental Expectations of the Architecture of the Internet
Fault Tolerance
Scalability
Quality of Service (QoS)
Security
It is the ability of a network to continue to function normally even when some of the components of the network fail
Fault Tolerance
It is the ability of a network to grow and react to future changes in order to keep pace with user demand
Scalability
These refer to mechanisms that manage congested network traffic
Quality of Service
Constraints of QoS
Technology Limitations
Costs
Availability of High-Bandwith Service
These are networks set up through temporary circuits on physical connections
Circuit-Switched, Connection-Oriented Networks
On this network, a single message is broken into small blocks of data known as packets
Packet-Switched, Connectionless Networks
What kind of Technology does Packet-Switched Technology require
Connectionless
Scaling networks is possible through
Hierarchical, multi-tiered design
Common Standards
Common Protocols
Measures used to secure data networks
Ensure Confidentiality
Communication Integrity
Availability
What can Prioritization do?
Allow an efficient balance of data types flowing through the network
Ways to ensure confidentiality
User Authentication
Data Encryption
Ways to maintain communication integrity
Digital Signatures
Ways to ensure availability
- Firewalls
- Redundant Network Architecture
- Networks without a single point of failure
