Chapter 4 – Sections & Objectives
- 4.1 Physical Layer Protocols
- Identify device connectivity options.
- Describe the purpose and functions of the physical layer in the network.
- Describe basic principles of the physical layer standards.
- 4.2 Network Media
- Identify the basic characteristics of copper cabling.
- Build a UTP cable used in Ethernet networks (scope – does not include cabling area discussion).
- Describe fiber-optic cabling and its main advantages over other media.
- Connect devices using wired and wireless media.
- 4.3 Data Link Layer Protocols
Describe the purpose and function of the data link layer in preparing communication for transmission on specific media. - 4.4 Media Access Control
- Compare the functions of logical topologies and physical topologies.
- Describe the basic characteristics of media access control methods on WAN topologies.
- Describe the basic characteristics of media access control methods on LAN topologies.
- Describe the characteristics and functions of the data link frame.
4.1 Network Access
Physical Layer Protocols Physical Layer Connection
Types of Connections
![CCNA 1 v6.0 Study Material - Chapter 4: Network Access 1 CCNA 1 v6.0 Study Material - Chapter 4: Network Access 1](https://itexamanswers.net/wp-content/uploads/2017/08/Picture2-3.png)
![CCNA 1 v6.0 Study Material - Chapter 4: Network Access 2 CCNA 1 v6.0 Study Material - Chapter 4: Network Access 2](https://itexamanswers.net/wp-content/uploads/2017/08/Picture3-3.png)
Network Interface Cards
![CCNA 1 v6.0 Study Material - Chapter 4: Network Access 3 CCNA 1 v6.0 Study Material - Chapter 4: Network Access 3](https://itexamanswers.net/wp-content/uploads/2017/08/Picture4-3.png)
![CCNA 1 v6.0 Study Material - Chapter 4: Network Access 4 CCNA 1 v6.0 Study Material - Chapter 4: Network Access 4](https://itexamanswers.net/wp-content/uploads/2017/08/Picture5-3.png)
Physical Layer Protocols Purpose of the Physical Layer
- The Physical Layer
- Accepts a complete frame from the data link layer
- Encodes it as a series of signals that are transmitted onto the local media
- Physical Layer Media
Describe the media types - Physical Layer Standards
Physical Layer Protocols Physical Layer Characteristics
- Functions
- Physical components
- Encoding
- Signaling
- Data Transfer
- Bandwidth – capacity to a medium to carry data
- Throughput – measure of the transfer of bits across the media
- Types of Physical Media
4.2 Network Media
Copper Cabling
- Characteristics of Copper Cabling
- Inexpensive, easy to install, low resistance to electric current
- Distance and signal interference
- Copper Media
- Unshielded Twisted-Pair Cable
- Shielded Twisted-Pair Cable
- Coaxial Cable
- Copper Media Safety
Fire and electrical hazards
![CCNA 1 v6.0 Study Material - Chapter 4: Network Access 7 CCNA 1 v6.0 Study Material - Chapter 4: Network Access 7](https://itexamanswers.net/wp-content/uploads/2017/09/Picturdsde1.png)
UTP Cabling
-
- Properties of UTP Cabling
- Cancellation of EMI and RFI signals with twisted pairs
- Properties of UTP Cabling
-
- UTP Cabling Standards
- TIA/EIA-568
- IEEE: Cat5, Cat5e, Cat6, Cat6e
- UTP Cabling Standards
-
- UTP Connectors
-
- Types of UTP Cable
- Rollover
- Crossover
- Straight-through
- Types of UTP Cable
- Testing UTP Cables
- Cable Pinouts
Fiber-Optic Cabling
-
- Properties of Fiber-Optic Cabling
- Transmits data over longer distances
- Flexible, but thin strands of glass
- Transmits with less attenuation
- Immune to EMI and RFI
- Fiber Media Cable Design
- Properties of Fiber-Optic Cabling
- Types of Fiber Media
Single mode and multimode - Fiber-Optic Connectors
- Testing Fiber Cables
- Fiber versus Copper
Wireless Media
- Properties of Wireless Media
– Data communications using radio or microwave frequencies - Types of Wireless Media
– Wi-Fi, Bluetooth, WiMax - Wireless LAN
– Wireless Access Point
– Wireless NIC adapters
![CCNA 1 v6.0 Study Material - Chapter 4: Network Access 15 CCNA 1 v6.0 Study Material - Chapter 4: Network Access 15](https://itexamanswers.net/wp-content/uploads/2017/08/Picture15-1.png)
4.3 Data Link Layer Protocols
Purpose of the Data Link Layer
- The Data Link Layer
– What is this layer responsible for? - Data Link Sublayers
– LLC communicates with the network layer
– MAC defines the media access processes - Providing Access to Media
- Data Link Layer Standards
– IEEE
– ITU
– ISO
– ANSI
4.4 Media Access Control
Topologies
- Controlling Access to the Media
- Physical and Logical Topologies
![CCNA 1 v6.0 Study Material - Chapter 4: Network Access 19 CCNA 1 v6.0 Study Material - Chapter 4: Network Access 19](https://itexamanswers.net/wp-content/uploads/2017/08/Picture18.png)
![CCNA 1 v6.0 Study Material - Chapter 4: Network Access 20 CCNA 1 v6.0 Study Material - Chapter 4: Network Access 20](https://itexamanswers.net/wp-content/uploads/2017/08/Picture19.png)
WAN Topologies
- Common Physical WAN Topologies
– Point-to-point– Hub and spoke
– Mesh
- Physical Point-to-Point Topology
- Logical Point-to-Point Topology
LAN Topologies
- Physical LAN Topologies
- Half and Full Duplex
- Media Access Control Methods
- Contention-Based Access
– CSMA/CD vs. CSMA/CA
Data Link Frame
- The Frame
– Header
– Data
– Trailer - Frame Fields
- Layer 2 Address
- LAN and WAN Frames
– 802.11 Wireless Frame
– PPP Frame
– HDLC
– Frame Relay
– Ethernet Frame
4.5 Chapter Summary
Summary
- Explain how physical layer protocols and services support communications across data networks.
- Build a simple network using the appropriate media.
- Explain how the Data Link layer supports communications across data networks.
- Compare media access control techniques and logical topologies used in networks.
Section 4.1 New Terms and Commands
- Access Point (AP)
- American National Standards Institute (ANSI) Bandwidth
- CENELEC (European Committee for Electrotechnical Standardization)
- CSA (Canadian Standards Association)
- Copper cable
- European Telecommunications Standards Institute (ETSI) Encoding
- Federal Communication Commission (FCC) in the USA
- Fiber-optic cable
- Gigabits per second (Gb/s)
- Goodput
- Institute of Electrical and Electronics Engineers (IEEE)
- Integrated Service Router (ISR)
- International Organization for Standardization (ISO)
- International Telecommunication Union (ITU)
- Internet Engineering Task Force (IETF)
- JSA/JIS (Japanese Standards Association)
- Kilobits per second (kb/s)
- Latency
- Manchester encoding
- Megabits per second (Mb/s)
- Modulation
- Network Interface Cards (NICs)
- OSI Physical Layer
- Signaling
- Telecommunications Industry Association/Electronic Industries Association (TIA/EIA)
- Throughput
- Wireless
- Wireless Local Network (WLAN)
Section 4.2 New Terms and Commands
- Cancelation
- Category 5 cable (Cat 5)
- Enhanced Category 5 cable (Cat5e)
- Category 6 cable (Cat6)
- Category 6a cable (Cat6a)
- Category 7 cable (Cat7)
- Cladding
- Coaxial
- Coaxial cabling
- Core
- Coverage area
- Crosstalk
- Dispersion
- Duplex Multimode LC Connector
- Electromagnetic interference (EMI)
- End gap
- End finish
- Enterprise networks
- Fiber-to-the-home (FTTH)
- Institute of Electrical and Electronics Engineers (IEEE)
- Interference
- Jacket
- Lasers
- Light Emitting Diodes (LEDs)
- Long-haul networks
- Misalignment
- Multi-mode fiber (MMF)
- Optical fiber cable
- Radio frequency interference (RFI)
- RJ45 connector
- Rollover
- Shared medium
- Shielded twisted pair cabling (STP)
- Signal attenuation
- Single-mode fiber (SMF)
- ST, SC, and LC fiber-optic connectors
- Submarine networks
- TIA 568A
- TIA 568B
- TIA/EIA 568 standard
- Unshielded twisted pair (UTP)
- Wireless Access Point (AP)
- Wireless NIC adapters
Section 4.3 New Terms and Commands
- American National Standards Institute (ANSI)
- Data link layer (layer 2)
- Ethernet interface
- Frames
- Institute of Electrical and Electronics Engineers (IEEE)
- International Organization for Standardization (ISO)
- International Telecommunication Union (ITU)
- Logical Link Control (LLC)
- Media Access Control (MAC)
- Serial interface
Section 4.4 New Terms and Commands
- 802.11 frame
- 802.11 Wireless
- Bus
- Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)
- Carrier Sense Multiple Access/Collision Detection (CSMA/CD)
- Collision
- Contention-based access
- Control
- Controlled access
- Cyclic Redundancy Check (CRC) value
- Data
- Error Detection
- Ethernet
- Extended Star
- Frame Check Sequence (FCS) Frame Relay
- Frame Relay
- Frame start and stop indicator flags
- Full-Duplex Communications
- Half-Duplex Communications
- HDLC
- Header
- Hub and Spoke
- Logical Point-to-Point Topology
- Logical Topology
- Media Access Control
- Media Sharing
- Mesh
- Physical Point-to-Point Topology
- Physical Topology
- Point-to-Point
- Point-to-Point Protocol (PPP)
- Quality of Service (QOS)
- Ring
- Star
- Topology
- Trailer
- Type
- Virtual circuit
Thank-you for all your uploads,
This slide download link is broken.
Hello, there is just download-not-available.txt instead of PPTX file.
Thanks for solve.
Jojo