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Chloe Phillips Inglés 126 fichas

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1Client sideThe side of the search process including the user doing something.
2Search engineA piece of software used to more easily visit web pages on the internet (e.g. Google, Yahoo, Bing)
3Server SideThe side of the search process involving the the web server (Index and Database).
4Spider (Web crawler)A bot or program that will search the web for web pages to update the Index and improve search engine results.
5IndexA list of all the websites and links on a search engine.
6DatabaseA large set of data that holds the data of web sites that can be accessed on the engine.
7Sponsored Link ResultsSearch results that have been paid for at a premium rate. They are normally placed at the top and/ or along side the search results. They will normally be related to the search results.
8AdvertsSame as Sponsored link results
[What else can be said...?]
9PopularityThe way that search results are ordered other than the sponsored links on the top and along the side.
10Photo [Don't look too clever]
11Store and forwardThe process of storing emails and forwarding to the recipient when they log in next.
12Address Book / Contact groupAn archive of all the users contact's details / A group of contacts that can all be instantly sent to each other.
13CCCarbon Copy- An e-mail that is being sent to more than one user at a time. recipients can see who its gone to.
14BCCBlind Carbon Copy. An e-mail that is sent to more than one user at a time. users cannot see who else it has been sent to.
15Benefits of using E-mail (1)Can sent files in with the message. (Attachments)
16Benefits of using E-mail (2)E-mails can usually arrive in seconds in most occasions.
17Drawbacks of using E-mail (1)Can be susceptible to spam or junk e-mails. May contain Viruses or Phishing Scams
18Drawbacks of using E-mail (2)Not everyone can have access to e-mails- people may not have Internet access or just cannot be bothered to check regularly.
19SMTPSimple Mail Transfer Protocol.
Handles outbound mail from the client to the mail server to the internet.
If a issue occurs, it will keep trying.
20POP 3Post Office Protocol.
Handles inbound mail. You download the message to the E-mail account but then the copy on the mail server is instantly deleted
21IMAPInstant Messaging Access Protocol.
Handles Web-mail. Lets you access on a server. When a message is received, a copy is kept in the server
22Web-mailA type of E-mail where all messages stay on the server [Backups]. Requires internet connection.
23Advantage of web-mailIt can be accessed on any device because it only needs a web browser
24E-mail clientA type of E-mail that doesn't require internet to see pre-existing mails. E-mails are deleted when the mail is put on the client device.
25Parts in a packet diagram
26E-mail Protocol diagram
27Transfer of data diagram
28Packet SwitchingA form of data transfer where individual 'Packets' are sent over a network
29Advantage of Packet Switching (1)Packets each go individual ways so there is efficient flows of data.
30Advantages of Packet Switching (2)If it is intercepted by hackers, They will only have one part of the file.
31Disadvantages of Packet Switching (1)If an image is missing a packet, It will not load correctly or will become corrupted.
32Disadvantages of Packet Switching (2)Uses a large amount of RAM (Random Access Memory)
33SimplexCommunication between devices than only goes in one direction [Examples- TV Remote, Wiimote]
34Half-DuplexTwo way communication but only one person can transfer data at a time.
[Example- Walkie-talkies]
35Full DuplexTwo-way communication and both people can communicate at the same time.
36Serial and ParallelSerial- Bits of data are transferred one at a time over a wire.
Parallel- Bits of data are simultaneously transferred up to a byte at a time over a wire.
37Benefit of Serial TransmissionsCan be transferred over large areas.
38Limitation of Serial TransmissionsMore Complex (and perhaps slower) because it has to be broken up individually
Also, requires more processing power.
39Benefit of Parallel Transmissionsit is Quicker because it transfers more data at a time.
40Limitation of Parallel TransmissionsIt can only be used for short-distance transfers of data.
41UTP Shielded Twisted PairNo protective foil which allows it to be interfered with.- used in LAN connections.
42STP Shielded Twisted PairA set of wires with each individual pair 'shielded' by foil to prevent interference from other devices.
43Advantages of UTP/STP (1)Cheaper than other connection methods.
44Advantages of UTP/STP (2)A reliable connection method.
45Disadvantages of UTP/STP (1)This method can only be used over small distances.
46Disadvantages of UTP/STP (2)A slower method than others.
47Coaxial cableA well protected piece of cable with a plastic coating, foil coating, mesh coating and a plastic coat.- used to connect TV with an aeriel
48Advantage of Coaxial cable (1)A reliable cable type.
49Advantages of Coaxial Cable (2)Has lots of layers of protection
50Disadvantages of Coaxial cable (1)It is a thick and normally not flexible cable type
51Disadvantages of Coaxial cable (2)It is low capacity and can only be used over shorter distances.
52Fibre optic cablesData (as light) is transmitted through glass optic cables - used for internet backbones
53Advantages of Fibre optic (1)Can be used over longer distances
54Advantages of Fibre optic (2)Has little to no interference
55Disadvantages of Fibre optic (1)Is a very expensive wire type.
56Disadvantages of Fibre optic (2)Has a very expensive installation
57infrared connectionUses infrared light (High frequency) to transmit data - Used in remote controls
58Advantages of Infrared (1)Reliable (over short distances)
59Disadvantages of infrared (1)Easy to interfere with.
60Disadvantage of infrared (2)Can only be used over short distances
61MicrowaveUses waves to transmit data over short lengths - Example-Bluetooth
62Advantage of microwaves (1)Good for medium length data transfers
63Disadvantages of microwaves (1)Can easily decrease the microwave signals
64Disadvantages of microwaves (2)May have slower speeds
65Satellite.A communication method that uses satellites in space to relay data
66Advantages of Satellite (1)Can be received anywhere there is a satellite receiver
67Disadvantages of satellite (1)An expensive form of connection
68Disadvantages of satellite (2)The Weather may interfere with its connections
69Network Interface Card (NIC)Hardware used for receiving wireless signals (from NAPs) built into devices. NICs are required to use wireless networking.
70Network Access Point (NAP)A place (hotspot) to receive wireless signals. It is offered in many places- including cafes and libraries.
71Hypertext Markup Language (HTML)HTML is made up of tags, mostly in pairs. Pairs of tags are called HTML elements. The open tag is written between <>.
Most tags have a close tag that includes a forward slash.
Text
(b makes the text bold)
72Most common HTML tags (Go into text view to copy link)www.thuto.org/ubh/web/html/tags1.htm
73Client side diagram
74Server side diagram
75Client sideActions on a website that are completed using the processor of the client's device [e.g. Interactive calendars / widgets].
76Server sideActions on a website that are completed on the web server side
[e.g. web forms].
77Advantages of client side (1)Will be quicker once the client device receive the site.
78Advantages of client side (2)Less likely to be intercepted by hackers- less transmissions between the client device and server.
79Disadvantages of client side (1)May not be able to be seen properly- client side actions normally require JavaScript
80Disadvantages of client side (2)May be browser-specific and will not be viewed correctly.
81Advantages of server side (1)Web Servers are much more powerful than computer processor. As such, the page will likely load faster
82Advantages of server side (2)No need for a specific browser to run. Will work on all platforms
83Disadvantages of server side (1)Higher risk of interceptions as there are more movements over the internet.
84Disadvantages of server side (2)If too many users input data at the same time, the server may become overloaded.
85DatabaseA structured storage of information and data.
86Types of relationships
87TableThe form that databases are structured in.
88FieldA field is a column in the table that stores a specific type of data.
89RecordA record is a row that stores a single item's data (or fields)
90Primary keyA special field with a unique identifier to identify it. [Normally a code/number]
91Foreign keyKey fields that appear in other tables- Can direct to other separate tables
92Relationship/ relational databaseWhen two or more tables are linked with a specific data field. A relational database is more than one table on a database.
93Text fieldsColumns wherein any type of character can be used (Letters & Numbers)
e.g. postcodes
94Numeric fieldsColumns where only numbers can be inserted.
e.g. number of stocks
95Date/ TimeColumns where only date and times may be inserted.
e.g. Date of Birth
96BooleanColumns where yes/no or true/false may only be inserted.
97data base thing
98Local DatabaseA database that is held in a network in order to keep it secure.
99Online DatabaseA database that can be accessed around the world. Not so secure
100Online database featuresUsed by larger organisations and can be accessed anywhere there is internet. Not as easy to secure.
101Local Database featuresUsed by smaller organisations. Easy to secure as it doesn't use the internet to access
102DBMSData Base Management System:
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A software that allows the user to create and search databases. It handles levels of access and security.
103SQLStructured Query Language:
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A high-tech language used by DBMS to create and search. Includes Data Definition Language (DDL) and Data Manipulation Language (DML).
104Threats to data
105How to Protect Data
106Protection against opportunistPhysical Barriers.
107Protection against VirusesAnti-virus software and Backups/ Recovery.
108Protection against HackersEncryption and Personal Privacy Settings.
109Protection against Accidental DamagePhysical Barriers and Access Levels.
110Protection against MalwareKeeping Software updated and use Anti-virus software.
111Protection against PhishingIf it looks suspicious, don't respond. Don't follow links from e-mails you don't recognize. Don't give out personal data (Personal Privacy Settings).
[[Password control too]]
112Data Protection Act 1998A UK Law that provides 8 principles on how data and information about users is used and stored
113Computer Misuse Act 1990A UK law that prevents hackers from maliciously using viruses to damage others' computers.
114Copyright, Designs and Patents Act 1988A UK law made to prevent privacy- protects the rights of makers of software, photos, music and film so use without permission is illegal
115Freedom of information Act 2000Gives people the right to see any data that is stored about them in public organisations (e.g. The Government)
Anyone can request their data in a ''foi' request'
116Technology used for Monitoring [[Movement]]CCTV
GPS Devices
Airport Passenger List
117Technology used for Monitoring [[Communication]]Monitoring email
Monitoring websites visited
Logging keywords typed into search engines.
118Component of email addressuser name
119Disadvantages of pay per clickCompetition for keywords
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This means the company is at the bottom of the page rankings and wont get as many views
120Disadvantages of Pay per clickTime consuming to monitor data
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Delays the production of refinement
121Advantage of Pay per clickMore cost-effective
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Only have to pay for when someone views the site
122FirewallsHow it works
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Monitors all data (IP addresses, packet data) from the internet to block anything that may be harmful
[e.g. Viruses, Spam]
123PasswordsCompared to the stored password
[through an algorithm]
124TCPTransmission control
125Back-upsType- full, incremental, differential
Full-all data is backed up
Incremental/Differential?- Only the data has been changed since last back-up
126Advantage of RFIDMore robust than barcodes