internet and WWW LU7

Question 1

what is the internet

Answer 1

GAN
worldwide collection of computer networks that can be connected to share resources + communicate

Question 2

how is info transferred using internet

Answer 2

travels through several interconnected networks

Question 3

host

Answer 3

sender or receiver computer

Question 4

how are hosts connected

Answer 4

bounded or unbounded communication links

Question 5

routers

Answer 5

devices that determine paths data must travel along to get from one host to other using communication link

Question 6

services on the internet

Answer 6

cloud storage
email
websites

Question 7

cloud storage

Answer 7

storage of data online in the cloud

Question 8

benefits of cloud storage

Answer 8

no need to buy new equipment
don’t need to manage + maintain expensive storage devices
automatic remote backup
only pay for storage space you use
can access anytime any place any device as long as internet

Question 9

cons of cloud storage

Answer 9

unreliable internet connection can stop data access
no control over security of company-have to trust contract
company could close/irrecoverable disaster

Question 10

protocol to send messages

Answer 10

SMTP

Question 11

protocols to receive messages from mail server

Answer 11

POP IMAP

Question 12

what is a website

Answer 12

collection of linked web pages that can be accessed using internet browser

Question 13

how do you access websites

Answer 13

accessed by their domain name

Question 14

TCP

Answer 14

transmission control protocol
responsible for making sure transmission gets from sender host to it’s destination

Question 15

IP

Answer 15

internet protocol
identifies diff computers connected to the internet

Question 16

advantages of TCP/IP Suite

Answer 16

allow direct access to the internet
enable communication between completely different computer systems

Question 17

DNS

Answer 17

domain name system
addressing system that assigns unique names + numbers to hosts

Question 18

hostname

Answer 18

domain name
made up of words

Question 19

IP address

Answer 19

unique 32-bit number or 128 bit number
divided into four 8 bit numbers (0-255)

Question 20

what is needed to connect computer to the internet

Answer 20

network card
software eg internet browser
device eg router

Question 21

what is needed to connect mobile device to the internet

Answer 21

sim card
browser software
wifi capabilities

Question 22

adsl

Answer 22

asymmetric digital subscriber line
data communications technology that provides fast data transmission over copper cables

Question 23

fibre

Answer 23

data communications technology that uses light to transmit data at fast speeds and high capacities

Question 24

wireless/wifi

Answer 24

uses radio frequency

Question 25

cellular

Answer 25

sim card 3G+ 4G (

Question 26

www

Answer 26

world wide web mass of linked web pages that can be accessed via internet interconnected docs connected by hyperlinks and URLs navigate to diff pages via hyperlinks runs ON the internet

Question 27

web page

Answer 27

any document on the web

Question 28

URL

Answer 28

uniform resource locator unique address of web page on the internet

Question 29

http://.

Answer 29

hypertext transfer protocol rules for communicating on the internet

Question 30

https://.

Answer 30

hypertext transfer protocol safe for user to enter private information

Question 31

web browser

Answer 31

program used to locate and view web pages processes HTML code + displays in browser window bookmarks,refresh,page tabs

Question 32

search engine

Answer 32

program that searches documents on the web for specified keywords and returns list of documents where keywords were found and hyperlinks to relevant pages

Question 33

what is the best way to search

Answer 33

state exactly what you want to find identity keywords use synonyms

Question 34

logical operators

Answer 34

define logical relationship between search terms reduces number of returns in internet searches AND OR NOT

Question 35

AND

Answer 35

+ must contain BOTH items limits search results

Question 36

OR

Answer 36

| either one or several or all more results returned

Question 37

NOT

Answer 37

excludes keywords when search use -

Question 38

false positive results

Answer 38

many results that are not relevant to the query

Question 39

role of user interface design

Answer 39

provide system for user to interact w a system such as website or computer program

Question 40

CLI

Answer 40

command line interface requires user to type commands to instruct system

Question 41

GUI

Answer 41

graphical user interface click on icons

Question 42

why is command line interface tricky to use

Answer 42

user must learn large list of commands commands can be misspelt

Question 43

what do good user interface designs include

Answer 43

consistency readability layout typography or use of colour (w/ theme)

Question 44

how do we ensure good readability

Answer 44

ensure fonts are readable and available in all web browsers use recognisable icons reduce number of elements on screen place elements in usable,recognisable locations

Question 45

what is the 3 click rule

Answer 45

once entering a website a user should achieve their aim in a minimum of 3 clicks

Question 46

how do you achieve navigation between pages

Answer 46

menu bars and buttons headings hyperlinks

Question 47

how do you utilise typography to have a good user interface design

Answer 47

not too many colours fonts dark and large enough to read dark colours light background vice versa use colours in expected way (red danger)

Question 48

what elements go into the user interface design

Answer 48

readability navigation typography layout theme consistency

Question 49

In boolean logic what does a 1 stand for?

Answer 49

true

Question 50

What are the types of connections used to connect large networks or personal devices to the internet

Answer 50

Asymmetric Digital Subscriber Line (ADSL) Fibre Wireless (WI-FI) Cellular

Question 51

what are the types of internet connections

Answer 51

adsl fibre wireless cellular