LEC08: Data Link Layer Networks Classification

What is the maximum range of a Personal Area Network (PAN)?

10 meters

What type of network is used to connect computers in company offices and factories?

Local Area Network (LAN)

What is the primary function of the Data Link Layer?

Preparation of network data for the physical network

What type of network covers a large geographical area, often a country or continent?

Wide Area Network (WAN) Signup and view all the answers

What is the principal communication method of the Data Link Layer?

NIC-to-NIC Signup and view all the answers

What type of network depends on communications channels of moderate-to-high data rates?

Metropolitan Area Network (MAN) Signup and view all the answers

What is the primary goal of the Data Link Layer in network communication?

End-to-end delivery Signup and view all the answers

What type of network covers a small geographic area, like a home, office, building or group of buildings?

Local Area Network (LAN) Signup and view all the answers

What is the primary purpose of the data link layer?

To prepare network data for the physical network Signup and view all the answers

Which organization is responsible for defining open standards and protocols for the network access layer?

All of the above Signup and view all the answers

What is the primary difference between physical and logical topologies?

Physical topology refers to the physical connections, while logical topology refers to virtual connections Signup and view all the answers

What type of information is typically included in a physical topology?

Device location information, such as room number and location on the equipment rack Signup and view all the answers

What is the purpose of the data link layer in relation to network topologies?

To determine the logical topology of a network Signup and view all the answers

What type of topology identifies virtual connections using device interfaces and Layer 3 IP addressing schemes?

Logical topology Signup and view all the answers

Which of the following is NOT a type of topology used to describe networks?

Virtual topology Signup and view all the answers

What is the term for the arrangement and relationship of network devices and their interconnections?

Network topology Signup and view all the answers

What is the primary function of the LLC sublayer?

To add Layer 2 control information to network protocol data Signup and view all the answers

Which of the following is NOT a responsibility of the MAC sublayer?

Data encryption Signup and view all the answers

Half-duplex communication is used in which of the following scenarios?

WLANs and legacy bus topologies with Ethernet hubs Signup and view all the answers

What is the primary difference between half-duplex and full-duplex communication?

Direction of data transmission Signup and view all the answers

What is the main purpose of the MAC sublayer's error detection mechanism?

To detect transmission errors Signup and view all the answers

What is the function of the delimiters in the MAC sublayer?

To provide synchronization between transmitting and receiving nodes Signup and view all the answers

Which sublayer is responsible for controlling the NIC and other hardware?

MAC sublayer Signup and view all the answers

What is the main difference between the LLC and MAC sublayers?

The LLC sublayer adds Layer 2 control information, while the MAC sublayer controls the NIC Signup and view all the answers

What is the primary factor that determines the choice of Layer 2 protocol in a network?

Size of the network in terms of number of hosts Signup and view all the answers

What is a common characteristic of WAN protocols such as PPP, HDLC, and Frame Relay?

They are being replaced by Ethernet in WANs Signup and view all the answers

What is the primary reason for using different protocols in LANs and WANs?

Bandwidth capacity Signup and view all the answers

What is the primary purpose of the CSMA/CD process?

To govern when a device can send and what happens when multiple devices send at the same time Signup and view all the answers

What type of devices can act as nodes operating at the Data Link Layer?

NICs on computers, routers, and Layer 2 switches Signup and view all the answers

What is the primary function of the Layer 2 protocol in a network?

Media access control Signup and view all the answers

What happens when two devices transmit at the same time in a CSMA/CD network?

A collision occurs, and the devices need to retransmit Signup and view all the answers

What is the relationship between Layer 2 protocols and IP in a TCP/IP network?

Layer 2 protocols work with IP Signup and view all the answers

What is the role of an Ethernet hub in a CSMA/CD network?

To receive and send frames, regenerating and sending them out to all other ports Signup and view all the answers

What is the primary difference between CSMA/CD and CSMA/CA?

CSMA/CD detects collisions, while CSMA/CA attempts to avoid them Signup and view all the answers

What is the primary difference between LAN and WAN protocols?