Network and topologies

Question 1

What is bandwidth?

Answer 1

Amount of data that can be transmitted over a given amount of time

Question 2

What is the internet?

Answer 2

A collection of networks than span the globe

Question 3

What is Hosting?

Answer 3

A service where you can allow people to put a website on the Internet

Question 4

What is a web server?

Answer 4

A computer designed to host a website

Question 5

What is a Web Client?

Answer 5

Device attempting to access web page

Question 6

What does DNS stand for?

Answer 6

Domain Name Services

Question 7

What is some advantages of Wireless Transmission Media?

Answer 7

• Easy to setup and add
  new devices
• No building work needed
• No cables around as trip
  hazard

Question 8

What is Fibre Optic and what are its disadvantages and advantages?

Answer 8

• Ultra Fast
• Works over long distance
• Expensive
• Needs building work

Question 9

What is a Network Topology?

Answer 9

The arrangement of how you connect the computers together

Question 10

What are the two types of Network Topologies and what are their uses?

Answer 10

Star - All devices connect to central server or
switch

Mesh - All devices connected to other. You also get
partial mesh when most of connected.

Question 11

What does LAN stand for and what does it do?

Answer 11

LAN—Local area Network
* Located in one geographical location
* You own all the hardware involved

Question 12

What is WAN and what does it do?

Answer 12

WAN—Wide Area Network
* Network covering more than one location
* Uses hardware owned by someone else

Question 13

What is a Network Layer?

Answer 13

Breaks networking down into small task that
work with each other. E.g. Tour browser doesn’t care if you are
wireless or wired.

Question 14

Advantages of Network Layer?

Answer 14

• Reduce difficult of creating the program as it is broken into small tasks.
• Products from different vendors can work together.

Question 15

What is a protocol?

Answer 15

A set of rules that govern how devices communicate over a network

Question 16

What is a Standards?

Answer 16

Manufacturers agree to
make things work with each other

Question 17

What are some protocols? What are they?

Answer 17

-TCP/IP - Enables communication over the internet

-HTTP - Governs communication between a webserver and a
client. Used to send web pages.

-HTTPS - Same as HTTP but it adds a layer of security/
authentication.

-FTP - Allows the transfer of files between computers.

-POP - Govern retrieving emails from email servers. POP
actually downloads the emails to the computer.

-IMAP - Email protocol that is used to retrieve emails from
mail servers.

-SMTP - Protocol used to send email from a web browser or
client.

Question 18

‎ Advantage of STAR Topology

Answer 18

If one cable or
connection is lost
only that computer
is affected.

Question 19

‎ ‎‎Advantage of MESH topology

Answer 19

Breaks in connection
are not a problem as you can
route your information
through another way.

Question 20

Disadvantage of STAR Topology‎

Answer 20

If server/switch
breaks then the
whole network is

Question 21

‎Disadvantage of MESH Topology‎

Answer 21

Expensive as lots of
cable and difficult to
manage.

Question 22

‎What is Interference?

Answer 22

‎Walls and radio signals can interfere with wireless signal strength slowing down the connection.

Question 23

What is Network Latency?

Answer 23

A measure of how long it takes for a signal to reach its
destination.