6 Types Of Networks Topologys

Question 1

a computer network is…

Answer 1

two or more devices connected together. They could be connected via a physical connection or via a wireless transmission.

Question 2

positives of networks

Answer 2

\+easier to share data
\+multi connection to two or more devices
\+allows access to the internet
\+multiple copies of data
\+fewer people are needed to run
\+better firewalls and antivirus software
\+communication
\+sharing peripherals
\+access files on multiple devices

Question 3

negatives of networks

Answer 3

• increased chance of being hacked or data stolen
• more expensive to set up and maintain
• virus spread
• if the server breaks a file may be inaccessible

Question 4

LAN is

Answer 4

Local area network, 2 km area, protected enclosed network, no third party

Question 5

WAN is

Answer 5

wide are network, 2km+ area, can be a third party (leaded line or satellite), internet is an example of a WAN

Question 6

a node is..

Answer 6

Everything connected to a network is a node

Question 7

wired ethernet cable

Answer 7

faster than any wifi- 100 megabits/s

cables will be a twisted pair

Question 8

wireless connectivity

Answer 8

slower than an ethernet, only 55 megabits/s

they uses radio waves to connect devices to router or hotspot

Question 9

bus topology

Answer 9

+cheapest and easiest and only uses a short amount of cable
+new nodes can be easily added
+mostly used in small businesses
-if the bus fails the whole network fails,the fail may be hard to locate
-more nodes mean more data collisions and data losses
-poor security as all nodes can see data
-not suitable for networks with high traffic due to high collisions

Question 10

Ring topology

Answer 10

+transfers data quickly as all data goes in one direction, no data collisions or terminators
+not affected by heavy traffic
+more workstations can be added without degrading performance, except while it is being added
-if ione cable fails the whole system fails
-workstations may see data that is not for term
-hard to identify problems

Question 11

star topology

Answer 11

+if one node goes down it doesn’t matter
+very easily managed as each nod is individually connected
+adding or removing hosts is easy
+faster due to no data collisions
-if the central point goes down then the whole network goes down
-the central node determines the performance of the whole network
-costs more due to cable and more to get a better switch

Question 12

mesh topology

Answer 12

+a broken node does not affect the transmission of data
+additional devices in the mesh will not affect its network connection
+can handle high traffic
+self healing
-continuous supervision needed
-a lot of devices need a lot of investment
-not suitable on a large scale

Question 13

a hub and switch…

Answer 13

a switch sends the data packet directly to the node that needs it, whereas the hub broadcasts teh packets to all nodes on the network

Question 14

a router

Answer 14

allows access to the internet and wifi between devices. not as good as a switch or network but is better at internet information