What are the three main services provided by data link layer?

What are the three main services provided by data link layer?

The three likely services to be provided by the data link layer are: 1. Unacknowledged connectionless service 2. Acknowledged connectionless service and 3. Acknowledged connection-oriented service.

What are the services provided by data link layer?

The main responsibility of the Data Link Layer is to transfer the datagram across an individual link. The Data link layer protocol defines the format of the packet exchanged across the nodes as well as the actions such as Error detection, retransmission, flow control, and random access.

What are the two 2 basic services of the Data Link layer?

The Data Link layer performs two basic services: Allows the upper layers to access the media using techniques such as framing. Controls how data is placed onto the media and is received from the media using techniques such as media access control and error detection.

What services does the data link protocol may provide?

The services provided by the data link layer are:

• Encapsulation of network layer data packets into frames.
• Frame synchronization.
• In the logical link control (LLC) sublayer:
• In the medium access control (MAC) sublayer:

What are the two 2 basic services of the data link layer?

Which of the following service is not provided by the data link layer?

2. Which of the following tasks is not done by data link layer? Explanation: Channel coding is the function of physical layer. Data link layer mainly deals with framing, error control and flow control.

Which layer links the network support layers and user support layers?

transport layer
Which layer is used to link the network support layers and user support layers? Explanation: Physical, data link and network layers are network support layers and session, presentation and application layers are user support layers. The transport layer links these layers by segmenting and rearranging the data.

Why is data link layer needed in computer networks?

Data-link layer ensures flow control that enables both machine to exchange data on same speed. When host on the shared link tries to transfer the data, it has a high probability of collision. Data-link layer provides mechanism such as CSMA/CD to equip capability of accessing a shared media among multiple Systems.

Which of the following is a data link protocol?

Which of the following is a data link protocol? Explanation: There are many data link layer protocols. Some of them are SDLC (synchronous data link protocol), HDLC (High level data link control), SLIP (serial line interface protocol), PPP (Point to point protocol) etc.

Which of the following is an application layer service?

Which of the following is an application layer service? Explanation: The services provided by the application layer are network virtual terminal, file transfer, access and management, mail services, directory services, various file and data operations.

What are the functions of transport network and data link layer?

Therefore, transport layer protocols are designed to provide error-free transmission. The data link layer also provides the error handling mechanism, but it ensures only node-to-node error-free delivery. However, node-to-node reliability does not ensure the end-to-end reliability.

Which are the services provided by data link layer how error can be detected and corrected during data transmission?

There are three main techniques for detecting errors in frames: Parity Check, Checksum and Cyclic Redundancy Check (CRC).

What is the main service provided by the data link layer?

The main service provided is to transfer data packets from the network layer on the sending machine to the network layer on the receiving machine. Data link layer of the sending machine transmits accepts data from the network layer and sends them to the data link layer of the destination machine which hands them to the network layer there.

What are the different types of communication layers in networking?

1. Actual Communication : In this communication, physical medium is present through which Data Link Layer simply transmits data frames. The actual path is Network Layer -> Data link layer -> Physical Layer on sending machine, then to physical media and after that to Physical Layer -> Data link layer -> Network Layer on receiving machine.

What is OSI Layer 2 in networking?

OSI Layer 2 – Data Link Layer. The data link layer or layer 2 is the second layer of the seven-layer OSI model of computer networking. This layer is the protocol layer that transfers data between adjacent network nodes in a wide area network (WAN) or between nodes on the same local area network (LAN) segment. [1] .

What are the other services offered by the network layer?

These are two other services offered by the network layer. In a network, there are a number of routes available from the source to the destination. The network layer specifies has some strategies which find out the best possible route. This process is referred to as routing.