Module 4 Unit 2

Question 1

what devices used to connect computers together in an ethernet network?

Answer 1

a switch

Question 2

what is the difference between a modem and a router?

Answer 2

modem creates serial link between two computers, over some sort of long-distance media. It operates at the data link clear. A router makes forwarding decisions between logical networks.

Question 3

can you list at least four Internet access methods?

Answer 3

Digital subscriber line
cable/hybrids fiber coax
fiber to the curb
satellite
cellular radio

Question 4

what is the latest Wi-Fi standard and which frequency bands does it use?

Answer 4

IEEEE802.11 AC works in the 5GHz band.

Question 5

What information do you need to configure a wireless connection manually?

Answer 5

Service set ID (SSID) or network type
encryption type
authentication information

Question 6

What is the risk of using free Wi-Fi network to make an order from an online shop?

Answer 6

Data on an open network may be intercepted by the person running the network or by other computers connected to the network

Question 7

What does attenuation mean?

Answer 7

Attenuation describes the loss of strength of a signal, the further it has to travel