2.0 Network+ Certification Cram Notes : Network Implementations

2.3 Configuring and deploying common Ethernet switching features

Explain configuration and deployment of the following

Media Access Control (MAC) address tables: A MAC address table, also known as a Content Addressable Memory (CAM) table, is a database in a network switch that maps the MAC addresses of devices connected to the switch to their corresponding switch ports. The MAC address table is used to determine where to forward a network frame based on the destination MAC address.

Power over Ethernet (PoE)/Power over Ethernet Plus (PoE+): PoE/PoE+ is a technology that allows power to be transmitted over Ethernet cabling along with data. PoE is used to power devices such as VoIP phones, Wi-Fi access points, and other network devices without the need for a separate power source. PoE+ is an upgraded version of PoE that provides more power over the same Ethernet cabling.

Spanning Tree Protocol (STP): STP is a network protocol that helps prevent network loops in a switched network. It works by electing a root bridge and calculating the shortest path to that bridge for each network segment. The root bridge is responsible for forwarding traffic for the entire network and blocks forwarding on alternate paths to prevent loops.

Carrier-sense multiple access with collision detection (CSMA/CD): CSMA/CD is a protocol used in Ethernet networks to regulate the transmission of data. It works by having each device on the network listen before transmitting to avoid collisions. If a collision occurs, the devices will wait a random amount of time before retrying to transmit.

Address Resolution Protocol (ARP): ARP is a protocol used to map an IP address to a corresponding MAC address. ARP operates at the Data Link Layer of the OSI model and is used to resolve the MAC address of a device on the local network so that it can be reached by another device.

Neighbor Discovery Protocol (NDP): NDP is a protocol used by IPv6 nodes to discover other nodes on the network and to find routers that can forward their packets. NDP operates at the Network Layer of the OSI model and provides the same functionality as ARP in IPv4 networks.

2.4 Explain briefly installing/configuring the appropriate wireless standards and technologies

Installing and configuring wireless standards and technologies involves setting up a wireless network infrastructure that includes access points and wireless controllers. Some of the most commonly used wireless standards and technologies include:

802.11a/b/g/n/ac/ax: These are the different versions of the IEEE wireless networking standard for Wi-Fi. They specify the frequency bands, data rates, and other technical details for wireless networking.

Wi-Fi Protected Access (WPA) and Wi-Fi Protected Access II (WPA2): These are security protocols used to protect Wi-Fi networks from unauthorized access. WPA and WPA2 use encryption to secure data transmitted over the network.

Wi-Fi Direct: Wi-Fi Direct is a technology that enables devices to connect directly to each other without the need for an access point. This makes it ideal for applications such as file transfers and printing.

Wireless Distribution System (WDS): WDS is a technology that allows multiple access points to be connected wirelessly, allowing them to work together as a single wireless network.

Wireless LAN Controllers: Wireless LAN controllers are devices that manage access points and provide centralized management, security, and monitoring for wireless networks.