Data Communications and Networking: Ethernet and CSMA/CD

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What is the primary function of the data link layer in the OSI model?

To route packets between networks
To convert data into a format suitable for transmission
To manage communication sessions between applications
To provide media access control and error detection (correct)

What is the purpose of fragmentation in the data link layer?

To route packets between networks
To convert data into a format suitable for transmission
To reassemble packets at the receiving end
To divide data packets into smaller frames for transmission (correct)

What is the function of a MAC address table in the data link layer?

To provide error detection and correction
To route packets between networks
To manage communication sessions between applications
To monitor Layer 2 communication (correct)

What is the purpose of encapsulating Layer 3 packets into frames?

To prepare packets for transmission over a network (D) Signup and view all the answers

Why is CSMA/CD no longer necessary?

Due to the use of full-duplex capable Layer 2 switches (D) Signup and view all the answers

What is the primary advantage of using full-duplex capable Layer 2 switches?

Elimination of collisions (B) Signup and view all the answers

Which fiber-optic cable type can transmit data up to approximately 500 meters?

Multimode (D) Signup and view all the answers

What type of light source transmitter is used in Multimode fiber-optic cables?

Light Emitting Diodes (LEDs) (B) Signup and view all the answers

What is a characteristic of data transmission over a network?

Data flows in one direction at a time (C) Signup and view all the answers

What is the typical application of Single-mode fiber-optic cables?

Long-distance telephony and cable TV (A) Signup and view all the answers

What is a function of the Logical Link Control (LLC) sublayer?

Providing data link layer addressing (D) Signup and view all the answers

What is the maximum distance that Single-mode fiber-optic cables can cover?

100 km (D) Signup and view all the answers

Is Wireless LAN suitable for enterprise networks?

True (C) Signup and view all the answers

Which data link layer media access control method does Ethernet use with legacy Ethernet hubs?

CSMA/CD (D) Signup and view all the answers

Which wireless standard is best suited for industrial and IoT environments?

Zigbee (C) Signup and view all the answers

What type of physical topology can be created by connecting all Ethernet cables to a central device?

Star (B) Signup and view all the answers

Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media?

Physical layer (B) Signup and view all the answers

What are two services performed by the data link layer of the OSI model?

It accepts segments and packages them into data units and provides data link layer addressing (D) Signup and view all the answers