1047

Question 1

Star Topology

Answer 1

A LAN where all devices are connected to a hub, computer sends message to hub and hub send it to all other connected devices

Question 2

Logical star topology

Answer 2

When the hub receives a message it only send it to the connected computers that want it

Question 3

Hub

Answer 3

In LAN it recieves a message (one at a time) and sends it all connected devices

Question 4

Ethernet

Answer 4

Computers wired together in a LAN

Question 5

Switch

Answer 5

Like lan but with 1-1 communication and no collision due to memory and separate sending and receiving wires

Question 6

throughput

Answer 6

mesures performance via data transmission per second

Question 7

WLAN

Answer 7

Wireless Lan

Question 8

Automatic repeat request (ARQ)

Answer 8

A means to stop collision in both LAN and WLAN systems. When sending working it send (ACK) to device so it knows it worked, if no ACK sent back then a collision happend and both devices wait random amount of time

Question 9

Controlled Access (collision avoidance)

Answer 9

the AP sends a request to send signal to 1 device and all other device know it is not there turn even if they cant “hear” the sending device.

Question 10

hidden node problem

Answer 10

If computers can both reach AP but not each other they could send things at the same time creating a collision.