5

Question 1

Communication networks store…

Answer 1

data & information.

Question 2

Network’s … things.

Answer 2

link

Question 3

Control affects…

Answer 3

privacy & security.

Question 4

What says Shannon’s Communication Model?

Answer 4

Sender sends data to transmitter
Transmitter sends signal to transmitter
Transmitter sends data to receiver

Question 5

Name the three Network Types:

Answer 5

PAN (Personal Area Network)
LAN (Local Area Network)
WAN (Wide Area Network)

Question 6

Describe how PAN works

Answer 6

It connects devices within 30 feet, wirelessly.
Serves a single individual

Question 7

Describe how LAN works

Answer 7

It connects PC’s in a single building.

Question 8

Describe how WAN works

Answer 8

It covers large areas, consists of smaller networks.

Question 9

Communication channels can be…

Answer 9

wired or wireless.

Question 10

Name pro’s and con’s of wired communication channels.

Answer 10

Pro’s: shielded, dependable, secure.
Con’s: costly, limited mobility, easy to damage.

Question 11

In the case of wireless devices & transceivers, why devices have transceivers?

Answer 11

For sending & receiving data.

Question 12

Microwaves in communication are…

Answer 12

directional, high-capacity signals.

Question 13

Name pro’s and con’s of wireless communication channels.

Answer 13

Pro’s: mobility, no cables, less power spikes.
Con’s: speed, range, security, licensing.

Question 14

Brandwith is…

Answer 14

transmission capacity.

Question 15

A brand of at least 25Mbps is…

Answer 15

a broadbrand.

Question 16

A brand shorther than 25Mbps is…

Answer 16

a narrowbrand.

Question 17

What’s network topology?

Answer 17

Structure & layout of network components.

Question 18

Name 4 network topologies.

Answer 18

Point-to-point
Star
Mesh
Bus

Question 19

Describe point-to-point.

Answer 19

Connects peripheral devices to a host.

Question 20

Describe star.

Answer 20

Connects devices to a control device.

Question 21

Describe mesh.

Answer 21

Connects devices to each other, full or partial.

Question 22

Describe bus.

Answer 22

Connects devices in a linear sequence.

Question 23

Check diagrams of network topologies (slide 29)!!

Answer 23

Make sure you know them.

Question 24

What is a Node?

Answer 24

Any device on a network.

Question 25

Types of Nodes:

Answer 25

DTE (data terminal equipment)
DCE (data communication equipment)

Question 26

Explain the difference between DTE and DCE.

Answer 26

DTE stores or generates data.
DCE controls data speed, signal conversion, error checking and routing.

Question 27

What a router does?

Answer 27

Control data flow & act as a gateway.

Question 28

What a modem does?

Answer 28

Converts signals for communication channels.

Question 29

Explain the difference between a router and a switch.

Answer 29

A router connects different networks, uses IP adresses to send data between networks and decides which path data should take to reach its destination.

A switch connects devices within the same network, uses MAC addresses to send data to the right device on the same network and doesn’t decide how data should leave your local network (just helps devices to talk to each other within that network)