Layer 2 (Data-Link) (obj 1.1)

Question 1

Data Link Layer

Answer 1

encapsulates the bits from layer 1 into frames and transmits those frames between nodes on the same logical segment of a network.

Question 2

Media Access Controll (MAC)

Answer 2

Physical addressing system of a device which operates on a logical topology.

Question 3

Logical Link Control (LLC)

Answer 3

Provides connection services and allows acknoledgement of receipt of messages.

Question 4

Isochronous

Answer 4

Networking devices use a common reference clock source and create time slots for transmission.

Question 5

Synchronous

Answer 5

Network devices agree on clocking method too indicate beginning and end of frames and can use control charactrers.

Question 6

Asynchronous

Answer 6

Network devices reference internal clock and use start and stop bits for synchronization.

Question 7

Network Adapter / Network Interface Card (NIC)

Answer 7

A NIC joins an end system host to network media (cabling or wireless) and enables it to communicate over the network by assembling and disassembling frames.

Question 8

Bridge

Answer 8

bridge is a type of intermediate system that joins physical network segments while minimizing the performance reduction of having more nodes on the same network. A bridge has multiple ports, each of which functions as a network interface.

Question 9

Switch

Answer 9

An advanced type of bridge with many ports. A switch creates links between large numbers of nodes more efficiently.

Question 10

Wireless Access Point (WAP)

Answer 10

An AP allows nodes with wireless network cards to communicate and creates a bridge between wireless networks and wired ones.

Question 11

What devices operate at the Data Link Layer (Layer 2)

Answer 11

1. Network Adapter
2. Bridge
3. Switch
4. Wireless Access Point (WAP)