Vocab (week 1)

Question 1

The Internet

Answer 1

A global system of interconnected computer networks that use the internet protocol suite (TCP/IP) to link devices worldwide.

• it is a network of networks that consist of private, public, academic, business and government networks
• linked by a broad array of electronic, wireless and optical networking technologies

Question 2

The internet…

Answer 2

connects networks together. “Interconnected networks”

Question 3

Computer network

Answer 3

2 or more computers linked together using: cables, radiowaves (wifi or bluetooth), satellites or telephone lines.

Question 4

why do we link computers together?

Answer 4

To exchange files, to allow for communication, share resources like printers. etc.

Question 5

A network of 2 computers

Answer 5

• a single cable
• two cables and another device
• wireless : bluetooth or wifi signals

Question 6

Most common topology to connect computers?

Answer 6

Star Topology

Question 7

LAN

Answer 7

Internal network of computers (offices, homes, short distance)

• Local Area Network
• primarily uses ethernet cables to connect
• only works for short distances
• can include wifi signals

Question 8

WAN

Answer 8

Wide Area Network: Unlimited by geography (connects computers from anywhere in the world)

can use the following:
- Satellites
- mobile towers
- tv cables
- fibre optics
- telephone lines

Question 9

How do we connect to the internet?

Answer 9

• using an ISP or an Internet Service Provider

Question 10

What is an ISP

Answer 10

A company people pay to get access to the internet, usually you can buy or rent the modem from them.

• Usually they have polices like Acceptable Use Policy or Terms of service. These may prevent copyright, video games, illegal content and online services, harassment.

Question 11

Internet vs WWW

Answer 11

• internet - the actual network - the hardware
  
  • ex: using internet but not the web - using an app on your phone, sending an email, sending an instant message
• Web - the content served up through this hardware. the collection of billions of digital pages that are viewable thorugh web browswer software
  
  • browsing web pages (google, youtube, ucr’s webstie)

Question 12

Transmission mediums

Answer 12

• Electricity (telephone lines, ethernet cables tv cables.)
• Electromagnetic waves (wireless)
• Light (optic fibers)

Question 13

data transmission is different for short and long distances

Answer 13

• WAN
  
  • phone cables and tv cables
  • power lines
  • cellphone signals
  • satellite signals
  • fiber optics
• LAN
  
  • ethernet cables
  • wifi signal

Question 14

Wifi

Answer 14

• wireless networking technology
• uses radio waves
• to provide wireless high-speed internet and network connections.

Question 15

Hotspot

Answer 15

A physical location where people may obtain internet access, typically using wifi technology

Question 16

Fiber optics

Answer 16

work using total internal reflection

note: - How do you think continents are connected in the internet?
- Using submarine fiber optic cables!
- Fiber optic cable sare the fastest and best medium for long distance

Question 17

Markup language

Answer 17

• a system for annotating a document in a way that is syntactically distinguishable from the text
• interpreted by the browser
• HTML, XML, XHTML, some examples
• used to present information

Question 18

Programming language

Answer 18

• Formal language that contains a set of instructions used to produce an OUTPUT
• Compiled by a compiler or interpreted by an interpreter
• C,C++, Java, Python and assembly are some examples
• used to give instructions to a computer to perform a particular task

Question 19

HTML

Answer 19

HTML files consist of nested HTML elements

Question 20

Dynamic webpapge

Answer 20

• dynamic: the user is able to play a role in what you see,
• ex is amazon, the page changes based on what you click on.

Question 21

static webpage

Answer 21

the page is created once and shows the same content
- no interaction with the user
- you cannot change what you say only the owner is able to do so.

Question 22

HTML, HYPERLINKS, WWW

Answer 22

• Web pages written in HTML include hyperlinks that when followed from a web browser allow the user to jump from one web page to the next.
• The combination of HTML web pages connected by hyperlinks and internet protocols for data transmission form the basis for the world wide web.
• HTML: web pages are written in a textual language called HTML
• HyperText MarkupLanguage
  
  • hypertext: links that connect to other pages and content
  • tags for annotating and structuring text
• HTML is like IOS and there are recent versions - HTML5