Module 4 Flashcards
(27 cards)
Components of a Home Network
- Desktop computers
- Gaming systems
- Smart TV systems
- Printers
- Scanners
- Security cameras
- Telephones
- Climate control devices
4.1.2
(Typical Home Network Routers)
Ethernet Ports
These ports are usually labeled Ethernet or LAN
(Typical Home Network Routers)
Internet Ports
These ports are used to connect the device to another Network. The internet port connects the router to a different Network than the Ethernet ports. Often to connect to cable or DSL modem in order to access the internet.
LAN Wireless Frequencies
The wireless technologies most frequently used in home networks are in the unlicensed 2.4 GHz and 5 GHz frequency ranges.
Bluetooth
Operates in the 2.4 GHz band
Category 5e
Cable is made up of 4 pairs of wires that are twisted to reduce electrical interference 4.2.2
Coaxial cable
It has an inner wire surrounded by tubular insulation layer, that is then surrounded by a tubular conduction shield. Most have an external sheath or jacket. 4.2.2
Fiber-optic cable
It can either be glass or plastic. It can be about the size of a human hair and it can carry digital information at a very high speed over long distances. They have very high bandwidths, which enable them to carry very large amounts of data.
Standards for Wireless Communication
- Developed to ensure communication among wireless devices.
- Specifies RF spectrum, data rates, transmission methods, etc.
- Institute of Electrical and Electronics Engineers (IEEE) is the main organization for creating wireless standards.
IEEE 802.11 Standard
- Governs Wireless Local Area Network (WLAN) environment.
- Amendments describe characteristics for different wireless communication standards.
- Wi-Fi collectively refers to technologies using 2.4 GHz and 5 GHz frequency bands.
Wi-Fi Alliance
Responsible for testing wireless LAN devices from various manufacturers.
- Wi-Fi logo indicates compliance with standards for interoperability.
Evolution of Wireless Standards
- Constant improvement in connectivity and speed of Wi-Fi networks.
- Awareness of new standards is crucial as manufacturers quickly implement them in new products.
Home Wireless Network Considerations
- Inquiry about the existence of a wireless network in the home.
- Knowledge of supported standards by the wireless router is essential.
Packet Tracer Basic Wireless Settings interface
wireless routers using the 802.11 standards have multiple settings that have to be configured.
Network Mode
- Determines the supported technology (e.g., 802.11b, 802.11g, 802.11n, or Mixed Mode).
Network Name (SSID)
- Identifies the WLAN; all participating devices must share the same SSID.
Standard Channel
- Specifies the communication channel; usually set to Auto for the access point to determine the optimum channel.
SSID Broadcast
- Determines if the SSID is broadcast to devices within range; typically enabled by default.
SSID
Service set Identifier
802.11 Protocol and Throughput
- Increased throughput in wireless network environment based on the 802.11 standard.
- Maximum speeds achieved when all devices support the same 802.11 standard.
- Access points configured for a specific standard may not connect devices using other standards.
Mixed Mode Wireless Network
- Allows devices using any existing Wi-Fi standards.
- Facilitates connection for older devices not supporting the latest standards.
SSID in Wireless Networks
- Important for wireless components to connect to the appropriate WLAN.
- Identifies the WLAN to wireless devices (STAs) and defines communication with other devices.
- SSID broadcast enables automatic discovery of the network; when disabled, manual entry is required on wireless devices.
SSID Functionality
- Essential for connecting wireless components to the appropriate WLAN.
- Acts as the name of the network.
- Wireless routers typically broadcast configured SSIDs by default.
SSID Broadcast and Manual Entry
- SSID broadcast allows automatic discovery of the network.
- Disabling SSID broadcast requires manual entry of SSID on devices.
