The LLC sublayer is responsible for communicating with the network layer and for tagging frames to identify what Layer 3 protocol is encapsulated. What is one advantage of using fiber optic cabling rather than copper cabling? The IANA is responsible for overseeing and managing IP address allocation, domain name management, and protocol identifiers. IEEE defines open standards and protocols that apply to the network access layer. The data link layer protocol used over the link requires a large frame header. The media access control protocol can be very simple.
Physical topologies display the IP addressing scheme of each network. A hybrid topology is one that is a variation or a combination of other topologies. Both partial mesh and the extended star are examples of hybrid topologies. C. Data that is transmitted the gardner news obits over the network flows in both directions at the same time. B. Data that is transmitted over the network flows in one direction at a time. A. Data that is transmitted over the network flows in one direction to many different destinations simultaneously.
EMI and RFI signals can distort and corrupt data signals that are carried by copper media. These distortions usually come from radio waves and electromagnetic devices such as motors and florescent lights. Crosstalk is a disturbance that is caused by adjacent wires bundled too close together with the magnetic field of one wire affecting another.
The receiving node identifies the beginning of a frame by seeing a physical address. A Layer 2 switch builds a MAC address table as part of its operation, but path determination is not the service that is provided by the data link layer. The medium access layer was made necessary by systems that share a common communications medium. SubNetwork Access Protocol refers to a standard used for transmitting IP datagrams across IEEE 802 networks.
In general, 802.3 specifies the physical media and the working characteristics of Ethernet. The term _______ indicates the capacity of a medium to carry data and it is typically measured in kilobits per second (kb/s) or megabits per second (Mb/s). A physical topology that is a variation or combination of a point-to-point, hub and spoke, or mesh topology is commonly known as a hybrid topology. The termbandwidthindicates the capacity of a medium to carry data and it is typically measured in kilobits per second (kb/s) or megabits per second (Mb/s). Devces connected to the Ethernet star topology connect to either a hub or a switch.
802.2 is concerned with managing traffic over the physical network. The Data Link Layer wants to send some data over the network, 802.2 Logical Link Control helps make this possible. It also helps by identifying the line protocol, like NetBIOS, or Netware. Ethernet is a way of connecting computers together in a local area network or LAN.
A. Physical topologies display the IP addressing scheme of each network. Logical topologies consist of virtual connections between nodes. Its small core produces a single straight path for light and it is commonly used with campus backbones. Its larger core allows for multiple paths for the light. Indicates the capacity of a medium to carry data and it is typically measured in kilobits per second (kb/s) or megabits per second (Mb/s).
Throughput is affected by a number of factors such as, EMI and latency, so it rarely matches the specified bandwidth for a network medium. The throughput measurement includes user data bits and other data bits, such as overhead, acknowledging, and encapsulation. The measure of the usable data transferred across the media is called goodput. Physical topologies show the physical interconnection of devices. Logical topologies show the way the network will transfer data between connected nodes.
The data link layer is the protocol layer in a program that handles the moving of data into and out of a physical link in a network. The data link layer also determines how devices recover from collisions that may occur when nodes attempt to send frames at the same time. Defining the media access processes that are performed by the hardware and providing data link layer addressing are functions of the MAC sublayer. The data link layer accepts Layer 3 packets and packages them into data units that are called frames. High-level Data Link Control is a group of communication protocols of the data link layer for transmitting data between network points or nodes.
Signal attenuation is caused when an electrical signal begins to deteriorate over the length of a copper cable. Ethernet frames are identified at the data link layer by their MAC addresses, which are unique to each NIC. IP addresses are used at the network layer, and TCP and UDP port numbers are used at the transport layer. End devices are connected together by a bus and each bus connects to a central intermediate device. Throughput is the measure of the transfer of bits across the media over a given period of time.