Module 6 - Data Link Layer Quiz

Routers perform several data link layer functions. Which of these are included? (Choose all that apply)

• Encapsulating packets into frames.

• De-encapsulating frames to expose packets.

• None of the above

• Detecting errors in frames

What information does a data link frame header typically include? (Choose all that apply)

• Source and destination MAC addresses.

• Encapsulated data from Layer 3

• Error detection mechanism

• Website URL

The data link layer, also known as Layer 2 in the OSI model, is responsible for:

• Providing internet access.

• Preparing data for physical transmission.

• Routing data packets between networks.

• Securing communication between applications.

A point-to-point WAN topology involves:

• All devices sharing a central hub.

• Devices directly connected in pairs.

• Data taking a circular path through the network.

• Multiple devices connecting to a central switch.

Full-duplex communication allows devices to:

• Only send data, not receive.

• Only receive data, not send.

• Send and receive data simultaneously.

• Neither send nor receive data.

What is the key difference between physical and logical topologies?

• Physical describes cables, logical describes software

• Physical describes device layout, logical describes IP addressing.

• Physical describes internet connection, logical describes local network

• There is no difference; they describe the same network layout.

Data link layer addresses are also known as:

• Logical addresses

• IP addresses

• Physical addresses

• Port numbers

The two sublayers of the IEEE 802 LAN/MAN data link layer are:

• IP and TCP

• OSI and TCP/IP

• LLC (Logical Link Control) and MAC (Media Access Control)

• UDP and DNS

A data link frame is encapsulated within a Layer 3 packet called a(n):

• Segment

• Datagram

• IP packet

• Application layer message

Which access control method uses collision detection to manage shared media on a network like a legacy Ethernet bus?

• Token Ring

• Carrier Sense Multiple Access with Collision Avoidance

• Carrier Sense Multiple Access with Collision Detection

• Full Duplex