Data Link Layer

- Message bit stream (M): $1101011011$ (10 bits) - Generator polynomial (G): $10011$ (5 bits) - Degree r = 5 - 1 = 4, so append 4 zeros --- $$\text{Augmented message} = 11010110110000$$ I will perform the division carefully, XOR at each step where the leadi...

The question is conceptual and asks for an illustrative example. No fixed data string is mandated, so a standard textbook example is used. - Chosen message: 1010011 - Chosen generator (divisor): 1011 (degree 3) The CRC below is computed in full, one alignme...

Media Access Control (MAC) is the lower sublayer of the Data Link Layer (Layer 2) in the OSI reference model. It controls the hardware responsible for interaction with the wired, optical, or wireless transmission medium. --- - MAC directly controls the hard...

--- LLC is the upper sublayer of the Data Link Layer in the OSI reference model. Its key functionalities are: 1. Interface between Layers: It acts as an interface between the Network Layer and the MAC sublayer, hiding the details of the underlying transmiss...

PPP (Point-to-Point Protocol) is a data link layer protocol used to establish a direct connection between two nodes over a serial link (such as a dial-up telephone line, leased line, or fiber optic cable). It is one of the most widely used WAN protocols and...

--- PPP (Point-to-Point Protocol) is a data link layer protocol used to establish a direct connection between two nodes over a serial link. It is widely used for transmitting network layer data over point-to-point connections such as dial-up lines, DSL, and...

--- Flow control is a mechanism used in data communication to manage the rate of data transmission between a sender and a receiver so that the receiver is not overwhelmed by data faster than it can process. As one of the functions of the Data Link Layer, th...

Flow control is a set of procedures that tells the sender how much data or how many frames it can transmit before overwhelming the receiver. It is a technique that allows two stations working and processing at different speeds to communicate with each other...

--- Flow control is a set of procedures that tells the sender how much data or how many frames it can transmit before it must wait for an acknowledgement from the receiver. It is a technique that allows two stations working and processing at different speed...

--- Flow control is a mechanism used at the Data Link Layer (and also at the Transport Layer) to regulate the rate of data transmission between a sender and a receiver so that the receiver is not overwhelmed by data faster than it can process. : "The data r...

A virtual circuit network is a type of connection-oriented packet switching network in which a dedicated logical path (virtual circuit) is established between the source and destination before data transmission begins. Key characteristics: - Data packets ar...

A virtual circuit network is a type of connection-oriented packet switching in which a dedicated logical path (virtual circuit) is established between the source and destination before data transmission begins. All data packets follow this predefined route ...

CSMA/CD is a Media Access Control (MAC) protocol used in traditional (half-duplex) Ethernet LANs to manage how devices share a common transmission medium and handle collisions. The name describes its three core mechanisms: Component Meaning ------ Carrier S...

A Wireless Local Area Network (WLAN) uses wireless network technology such as Wi-Fi (Wireless Fidelity) to connect devices without relying on physical cables. The need for Wireless LAN arises due to the following reasons: - Mobility: Users can move freely w...