Bab 4 membahas jaringan akses, termasuk protokol layer fisik, media jaringan seperti kabel tembaga dan fiber optik, protokol layer data link, dan teknik media access control seperti contention-based dan controlled access.
1. CCNA Exploration v5.0
Network fundamentals
Setia Juli Irzal Ismail
TK 1073 – Jaringan Komputer
Semester Ganjil 2015 - 2016
Hanya dipergunakan untuk kepentingan pengajaran di lingkungan Telkom Applied Science School
Bab 4:
Jaringan Akses
2. Chapter 4:
Mahasiswa akan mampu :
Menjelaskan bagaimana protokol pada layer
fisik dan layanannya menyokong komunikasi
melalui jaringan data.
Membangun jaringan sederhana menggunakan
peralatan yang ada.
Menjelaskan peran dari layer data link dalam
menyokong komunikasi melalui jaringan data.
Membandingkan teknik media akses kontrol
dan topologi logical yang digunakan di jaringan.
3. Chapter 4
– 4.1 Protokol Layer Fisik
– 4.2 Media Jaringan
– 4.3 Protokol Layer Data Link
– 4.4 Media Access Control (MAC)
– 4.5 Simpulan
7. Tujuan dari Layer Fisik
Layer Fisik
Contoh sinyal biner pada jaringan fisik
8. Tujuan dari Layer Fisik
Media Layer Fisik
Contoh sinyal elektrik
pada kabel tembaga
Contoh sinyal pada fiber
optik
Contoh sinyal wireless
9. Tujuan dari Layer Fisik
Standar dari Layer Fisik
Standard
organization
Networking Standards
ISO
• ISO 8877: Officially adopted the RJ connectors (e.g., RJ-11, RJ-45)
• ISO 11801: jaringan cabling standard similar to EIA/TIA 568.
EIA/TIA
• TIA-568-C: Telecommunications cabling standards, used by nearly all voice, video
dan data jaringan.
• TIA-569-B: Commercial Building Standards for Telecommunications Pathways dan
Spaces
• TIA-598-C: Fiber optic color coding
• TIA-942: Telecommunications Infrastructure Standard for Data Centers
ANSI • 568-C: RJ-45 pinouts. Co-developed with EIA/TIA
ITU-T • G.992: ADSL
IEEE
• 802.3: Ethernet
• 802.11: Wireless LAN (WLAN) & Mesh (Wi-Fi certification)
• 802.15: Bluetooth
10. Prinsip Fundamental dari Layer 1
Prinsip – prinsip dari Layer Fisik
Media
Physical
Components
Frame Encoding Technique Signalling Method
Copper cable
• UTP
• Coaxial
• Connectors
• NICs
• Ports
• Interfaces
• Manchester Encoding
• Non-Return to Zero (NRZ)
techniques
• 4B/5B codes are used with Multi-
Level Transition Level 3 (MLT-3)
signaling
• 8B/10B
• PAM5
• Changes in the
electromagnetic field
• Intensity of the
electromagnetic field
• Phase of the
electromagnetic wave
Fiber Optic
cable
• Single-mode Fiber
• Multimode Fiber
• Connectors
• NICs
• Interfaces
• Lasers dan LEDs
• Photoreceptors
• Pulses of light
• Wavelength multiplexing using
different colors
• A pulse equals 1.
• No pulse is 0.
Wireless
media
• Access Points
• NICs
• Radio
• Antennae
• DSSS (direct-sequence spread-
spectrum)
• OFDM (orthogonal frequency
division multiplexing)
• Radio waves
43. Standar Layer 2
Standar Layer Data Link
Standard
organization
Networking Standards
IEEE
• 802.2: Logical Link Control (LLC)
• 802.3: Ethernet
• 802.4: Token bus
• 802.5: Token passing
• 802.11: Wireless LAN (WLAN) & Mesh (Wi-Fi certification)
• 802.15: Bluetooth
• 802.16: WiMax
ITU-T
• G.992: ADSL
• G.8100 - G.8199: MPLS over Transport aspects
• Q.921: ISDN
• Q.922: Frame Relay
ISO
• HDLC (High Level Data Link Control)
• ISO 9314: FDDI Media Access Control (MAC)
ANSI • X3T9.5 dan X3T12: Fiber Distributed Data Interface (FDDI)
52. Topologi LAN
Contention-Based Access
Characteristics Contention-Based Technologies
• Stations can transmit at any time
• Collision exist
• There are mechanisms to resolve contention
for the media
• CSMA/CD for 802.3 Ethernet jaringan
• CSMA/CA for 802.11 wireless jaringan
54. Topologi LAN
Controlled Access
Characteristics Controlled Access Technologies
• Only one station can transmit at a time
• Devices wishing to transmit must wait
their turn
• No collisions
• May use a token passing method
• Token Ring (IEEE 802.5)
• Fiber Distributed Data Interface (FDDI)