NET101: Week 6

What layer of the OSI model does Ethernet operate within?

• Network Layer

• Data Link Layer

• Transport Layer

• Application Layer

Which sublayer of the Data Link Layer handles communication with the network layer?

• Network Layer

• Logical Link Control (LLC)

• Physical Layer

• Media Access Control (MAC)

What is one of the primary functions of the LLC sublayer?

• Flow Control

• Collision Handling

• Frame Addressing

• Frame Delimiting

Which protocol is implemented by the MAC sublayer to manage access to the shared medium?

• FTP

• HTTP

• CSMA/CD

• TCP/IP

What does the Frame Check Sequence (FCS) do?

• Detects errors in transmitted frames

• Adds MAC addresses to frames

• Manages data flow

• Synchronizes frames

What is the purpose of Service Access Points (SAPs) in the LLC sublayer?

• To identify protocols for data delivery

• To manage MAC addresses

• To handle frame transmission

• To provide error control

What is the core of a fiber optic cable made of?

• Aluminum

• High-purity glass or plastic

• Copper

• Plastic

What is the main difference between Single-Mode and Multi-Mode fibers?

• Cost

• Core diameter

• Length of transmission

• Type of light source

What does attenuation refer to in fiber optics?

• The spreading of light pulses

• The loss of signal strength

• The type of light used

• The core material

Which component converts electrical signals into light signals?

• Amplifier

• Connector

• Receiver

• Transmitter