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NETWORK ACCESS 2.3/2.4 - Coggle Diagram
NETWORK ACCESS 2.3/2.4
Data Link Layer Responsibilities
Framing
Physical addressing
Flow control
Error control
Access control
IDENTIFY THE DATA LINK LAYER
STANDARD ORGANIZATIONS
Institute of Electrical and Electronics Engineers (IEEE)
International Telecommunication Union (ITU)
International Organization for Standardization (ISO)
American National Standards Institute (ANSI)
DIFFERENTIATE PHYSICAL AND
LOGICAL TOPOLOGIES
Physical topology – shows physical connections and how decice interconnected
Definition : Physical layout of
devices and cables
Focus : Hardware connections
Example: Bus, Star, Ring
Tangibility: Tangible and visible
Impact on network: Installation and maintenance
Logical topology – identifies the virtual connections
between devices using device interfaces and IP addressing schemes
Definition: Data flow and communication pattern
Focus: Data transmission
Examples: Logical bus, logical star
Tangibility: Intangible and conceptual
Impact on network: Protocol and performance
DIFFERENTIATE LAN AND WAN
TOPOLOGIES
A Local Area Network (LAN) is a network that connects computers and device within a small geographical area, such as an office home, or school
Physical LAN Topologies
Star
Extended star
Bus
Ring
Ownership: Usually privately owned and
managed.
Speed: High speed
A Wide Area Network (WAN) is a network that spans a large geographical area, such as cities, countries, or even globally
WAN Topologies
Point-to-point
Hub and spoke
Mesh
Ownership: Can be private, public, or leased from
telecom providers.
Speed: Slower than LAN due to distance
DESCRIBE HALF AND FULL DUPLEX
COMMUNICATION
Half-duplex communication
A communication mode where data can be transmitted in both
directions, but only one direction at a time.
Advantages: Simple and cost-effective
: Require less bandwidth
Disadvantages: Slower communication
: Increased latency
Example: walkie talkie, older Ethernet
Full-Duplex Communication
A communication mode where data can be transmitted and received
simultaneously.
Advantages: Faster communication
: Reduced latency
Disadvantages: more complex
: expensive
Example: Telephones, modern Erthenet
Explain how ARP COMMUNICATION ON A
NETWORK.
Address Resolution Protocol (ARP)
to map an IP address to MAC address
IP address
Definition: A logical address assigned to a device
to identify its location in a network.
Work across network
MAC address
Definition: A unique identifier assigned to a network interface card (NIC) by the manufacty
Work within local network