Podcast
Questions and Answers
What is the main role of the Data Link layer?
What is the main role of the Data Link layer?
- It uses sequence numbers to maintain reliability
- It provides communication between locally networked devices (correct)
- It uses sockets to identify running applications
- It deletes entries in the ARP cache
Which of the following acronyms represents the Data Link layer?
Which of the following acronyms represents the Data Link layer?
- LLC - LOGIC LINK LAYER
- LLC - LOCAL LINK CONNECTION
- MAC - MEDIA ACCESS CONTROL (correct)
- MAC - MULTIPLEXING ACCESS CARD
Which of the following best describes the role of Data Link LLC?
Which of the following best describes the role of Data Link LLC?
- It deletes entries in the ARP cache
- It provides communication between different networks
- It uses sequence numbers to maintain reliability
- It interfaces with the upper layer for data transmission (correct)
Which layer of the TCP/IP model is the Data Link layer?
Which layer of the TCP/IP model is the Data Link layer?
What does the Data Link layer use to identify running applications?
What does the Data Link layer use to identify running applications?
What is the main function of the LLC (Logical Link Control) layer?
What is the main function of the LLC (Logical Link Control) layer?
What is the primary role of the Media Access Control (MAC) component of the Data Link Layer?
What is the primary role of the Media Access Control (MAC) component of the Data Link Layer?
Why do routers require at least 2 network cards?
Why do routers require at least 2 network cards?
How many bits constitute a MAC address?
How many bits constitute a MAC address?
What are the two constituent parts of a MAC address?
What are the two constituent parts of a MAC address?
Which Windows command will display the MAC address of your computer's Ethernet network interface card?
Which Windows command will display the MAC address of your computer's Ethernet network interface card?
Study Notes
Data Link Layer
- The main role of the Data Link layer is to provide error-free transfer of data frames between two devices on the same network.
- The Data Link layer is represented by the acronym OSI 2.
- The Data Link LLC (Logical Link Control) layer is responsible for identifying and managing network connections, as well as providing flow control and error detection.
TCP/IP Model
- The Data Link layer is the second layer of the TCP/IP model.
Identification of Applications
- The Data Link layer uses port numbers to identify running applications.
LLC Function
- The main function of the LLC (Logical Link Control) layer is to manage network connections, provide flow control, and detect errors.
MAC Component
- The primary role of the Media Access Control (MAC) component of the Data Link Layer is to manage access to the network channel, resolving collisions, and providing address recognition.
Routers and Network Cards
- Routers require at least 2 network cards to connect multiple networks and forward data between them.
MAC Address
- A MAC address consists of 48 bits.
- A MAC address is composed of two parts: the Organizationally Unique Identifier (OUI) and the Network Interface Controller (NIC) specific value.
Windows Command
- The
getmaccommand in Windows displays the MAC address of a computer's Ethernet network interface card.
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Description
Test your knowledge of the Data Link layer with this quiz. Identify the correct role and characteristics of the Data Link layer in computer networking.
