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Course Outline
Introduction to Networking and the OSI Reference Model
- Foundations of data networks
- Overview of LANs and WANs
- Application types and associated requirements
- Functions of the OSI Reference Model and the modular architecture of data networks
LAN Technologies and Ethernet Protocols
- Ethernet protocols and speeds (10M/100M/1G/10Gbps)
- Ethernet media types (twisted pairs, cable categories 5/5e, fiber optics, and connectors)
- The CSMA/CD algorithm
- Frame structures (802.3, Ethernet-2, Ethernet-SNAP)
- Common troubleshooting issues
LAN Switching: Functionality and Operation
- Characteristics and operation of LAN bridges
- Operational principles of LAN switches
- Switch technologies: Half-Duplex/Full-Duplex and auto-negotiation
- Virtual LANs (VLANs) and VLAN tagging
- Spanning Tree Protocols (STP/RSTP/MSTP)
- Link Aggregation (LAG) and Etherchannel; LAN structure and topologies
- Data Center switching concepts
WAN Protocols and Services
- Public network structure, including access, transmission, and switching
- Traditional network architecture and protocols
- End-to-end services: FR, ATM, and Leased lines
- Transmission services: SDH and WDM/DWDM
- Access services: xDSL and CaTV/DOCSIS
- Next-generation networks
- End-to-end services: Carrier Ethernet and MPLS IP-Based services
- Transmission networks: Carrier Ethernet
- Access networks: Advanced xDSL, DOCSIS, and optical technologies
Wireless Networks and Wi-Fi
Network architecture elements and topologies
Physical layer considerations
- 802.11a/b/g standards
- 802.11n, OFDM, and MIMO technologies
MAC layer: Contention resolution
- CSMA/CA, RTS, CTS, and NAV mechanisms
- IEEE 802.11 frame format and addressing
Additional features
- Wi-Fi security standards: WEP, EAP, TLS, TTLS, and 802.11x
Wi-Fi Quality of Service (QoS) – Contention-based access via AIFS, Access Categories, and Contention Windows. Controlled access through Polling and TXOPs. Managing QoS with ADDTS, Traffic Streams, and TSPECs.
- Cellular Networks
Introduction
- Frequency spectrum reuse
- Call setup and management
- Key infrastructure elements: MSC, BSC, BTS, and terminals
- Handovers and channel allocation
Standards and evolution
Frameworks such as 3GPP, 3GPP2, and IMT-2000
Network evolution pathways: from cdma1 to EVDO/DV, and from GSM to HSPA and LTE
Introduction to TCP/IP
- The TCP/IP model and common protocols
- Protocol operations
- Relevant standards organizations
IPv4: Protocol and Addressing
- Core characteristics of IP
- ARP – Address Resolution Protocol
- IP frame structure
- IP addressing and address classes
- Differentiation between private and public addresses
- Subnetting IP address spaces: VLSM and CIDR
- IP address design (Practical exercise)
- DHCP – Dynamic Host Configuration Protocol
- Multicast and IGMP
IPv6: Protocol and Addressing
- IPv6 characteristics and comparison with IPv4
- Packet structure and headers (overview)
- IPv6 address types and categories
- The auto-configuration process
- Strategies for migrating from IPv4
Layer 4 Protocols: TCP and UDP
- Introduction to Layer 4 protocols and well-known ports
- UDP packet structure and operation
- TCP packet structure and operation
- TCP connectivity and reliability mechanisms
- TCP sliding window, slow-start, and congestion avoidance
- Sequence and acknowledgment numbers
- Calculating TCP maximum throughput (WS and RTT)
- Go-back-N and Selective-Repeat techniques
- Common TCP performance issues
Routing and Layer 3 Switching Basics
- Principles of the routing process
- Routing domains and areas
- Static vs. dynamic routing
- Distance-vector and link-state protocols
- Routing metrics
- RIP and OSPF protocols
- BGP: eBGP and iBGP
- Layer 3 switching
- Static and dynamic NAT
- HSRP and VRRP
- QoS in IP networks
QoS Parameters: Bandwidth, Delay, Jitter, and Packet Loss
- Application requirements and resulting network behavior
- Techniques: Classification and marking, Policing and shaping, Queuing, RED/WRED
Network Security Basics and Components
- Fundamentals of network security, including threats and vulnerabilities
- Secure network architectures: Firewalls (FWs), VPNs, NACs, and security devices
- Firewall operation: Packet filtering and stateful inspection
- Security protocols: Encryption and Authentication
- Types of encryption
- Symmetric-key algorithms: Block and Stream Ciphers
- Public-key cryptography
- Hash functions
- Authentication fundamentals
- Multi-factor authentication
- Tokens, smart card encryption, and wireless encryption protocols
- OTP – One-Time Passwords
Introduction to Data Network Design
- Network Engineering introduction
- Requirements analysis
- Flow models
- High-Level Architecture Design
- Component architecture and reference architectures
- Architectural models
- Systems and network architectures
- Choosing service and vendor architectures
- Low-Level Topology Design
- Designing enterprise networks
- LAN and WAN design
- IP network design
- Security and privacy design
- Network management design
- Network operations design
Requirements
A basic technical understanding of standard computer operating systems is required.
21 Hours
Testimonials (2)
The complexity and the way of approaching and presenting the concepts
Andreea GINGU
Course - Data Communications Networks - Theory and Practice
He is very creative and He likes for us to have good questions.
