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What are two primary responsiblity of ethernet mac sublayer?
No, frame delimiting is a primary responsibility of the Logical Link Control sublayer of the Data Link Layer.. Data link layer exists of 2 sublayers; Media Acces control Sublayer (MAC) & Logical Link Control sublayer (LLC)
What are the sublayers of the Data Link layer are as defined in the IEEE 802 standards?
Logical link control sublayer and media access control sublayer
What layer has been subdivided into the Logical Link Control sublayer and the Media Access Control sublayer?
The Data Link layer of the OSI model has been subdivided into the Logical Link Control (LLC) sublayer and the Media Access Control (MAC) sublayer. The LLC sublayer is responsible for providing error control and flow control, while the MAC sublayer manages access to the physical transmission medium and the addressing of devices on the network. This division allows for more efficient data handling and communication in network environments.
What Data Link sublayer manages flow control?
LLC (Logical Link Control) sublayer - The LLC provides a common interface and supplies reliability andflow control services.Hope this helps,A. York
Difference between media access control and LLC?
* MAC sublayer(802.3): defines how to transmit data on physical layer * LLC sublayer(802.2): responsible for identifying different protocol logically & encapsulate them.
What is Mac in networking?
MAC stands for Media Access Control. Is also known as the Physical Address of your NIC (Network Interface Card) and is supposed to be unique. It can be spoofed.
What are the functions of a mac sublayer?
1. To perform the control of access to media. 2. It performs the unique addressing to stations directly connected to LAN. 3. Detection of error.
Which mac sub layer are used in ieee 802.11 wireless lan?
In IEEE 802.11 wireless LANs, the Medium Access Control (MAC) sublayer consists of two main components: the MAC Control sublayer and the MAC Data sublayer. The MAC Control sublayer is responsible for managing access to the shared wireless medium and handling frame control, while the MAC Data sublayer is tasked with the encapsulation and transmission of data frames. Together, these components ensure efficient communication and coordination among devices in a wireless network.
IEEE has divided the Transport layer into two sublayers?
No. It is the Data Link layer that IEEE has divided into two sublayers. The Data Link layers are Logical Link Control and Media Access Control.
Is the MAC sublayer responsible for the ordered delivery of frames?
No, the MAC (Media Access Control) sublayer is not responsible for the ordered delivery of frames. Its primary function is to manage access to the physical transmission medium and handle frame encapsulation, addressing, and error detection. Ordered delivery is typically managed by higher layers of the OSI model, such as the Transport layer, specifically by protocols like TCP.
What are the differences between logical link control and media access control sub layers?
MAC function is framing of packets and LLC functions are protocol multiplexing, flow control, detection, and error control through a retransmission of dropped packets.LLC acts as an interface between MAC and Network Layer.The following definitions are also true:Logical Link Control (LLC). This sublayer is responsible for the data transmission between computers or devices on a network.Media Access Control (MAC). On a network, the network interface card (NIC) has an unique hardware address which identifies a computer or device. The physical address is utilized for the MAC sublayer addressing.
What are the sublayers of the data link layer as defined in the IEEE 802 standards?
Logical Link Control sublayerThe uppermost sublayer is Logical Link Control (LLC). This sublayer multiplexes protocols running atop the Data Link Layer, and optionally provides flow control, acknowledgment, and error notification. The LLC provides addressing and control of the data link. It specifies which mechanisms are to be used for addressing stations over the transmission medium and for controlling the data exchanged between the originator and recipient machines. Media Access Control sublayerThe sublayer below it is Media Access Control (MAC). Sometimes this refers to the sublayer that determines who is allowed to access the media at any one time (usually CSMA/CD). Other times it refers to a frame structure with MAC addresses inside.There are generally two forms of media access control: distributed and centralized. Both of these may be compared to communication between people. In a network made up of people speaking, i.e. a conversation, we look for clues from our fellow talkers to see if any of them appear to be about to speak. If two people speak at the same time, they will back off and begin a long and elaborate game of saying "no, you first".The Media Access Control sublayer also determines where one frame of data ends and the next one starts -- frame synchronization. There are four means of frame synchronization: time based, character counting, byte stuffing and bit stuffing.The time based approach simply puts a specified amount of time between frames. The major drawback of this is that new gaps can be introduced or old gaps can be lost due to external influences.Character counting simply notes the count of remaining characters in the frame's header. This method, however, is easily disturbed if this field gets faulty in some way, thus making it hard to keep up synchronization.Byte stuffing precedes the frame with a special byte sequence such as DLE STX and succeeds it with DLE ETX. Appearances of DLE (byte value 0x10) has to be escaped with another DLE. The start and stop marks are detected at the receiver and removed as well as the inserted DLE characters.Similarly, bit stuffing replaces these start and end marks with flag consisting of a special bit pattern (e.g. a 0, six 1 bits and a 0). Occurrences of this bit pattern in the data to be transmitted is avoided by inserting a bit. To use the example where the flag is 01111110, a 0 is inserted after 5 consecutive 1's in the data stream. The flags and the inserted 0's are removed at the receiving end. This makes for arbitrary long frames and easy synchronization for the recipient. Note that this stuffed bit is added even if the following data bit is 0, which could not be mistaken for a sync sequence, so that the receiver can unambiguously distinguish stuffed bits from normal bits.
