Transcript Revision Lesson 2 - TeachMeComputing

Revision
Lesson 2
Mini Quiz
What do the following Abbreviations stand for?

POP

NAP

IP

TCP

FTP

ISP
Mini Quiz
What do the following Abbreviations stand for?

POP – Point of Presence

NAP – Network Access Point

IP – Internet Protocol

TCP – Transmission Control Protocol

FTP – File Transfer Protocol

ISP – Internet service provider
Topics next week

Benefits of VOIP

Data Exchange

Internet infrastructure
Search engine

Http why is it better

Software as service cloud computing

Databases
VOIP – Voice Over
Internet Protocol


Benefits

Being able to contact relatives or business colleagues
on the other side of the world.

Online conferences and Meetings - Reduces Travel
costs, travel time, avoids the loss of productivity when
traveling and the cost of hiring the venue.
Disadvantages

Reliability. VoIP service is dependent on the quality and
reliability of your broadband service and may not work
if there is a power cut.

Voice quality. Voices can sometimes be distorted or
there may be long pauses between questions and
answers.

Security. As with all internet technologies, identity theft,
viruses, spamming and phishing are all potential threats
VOIP – What is it?
Packet Switching and
Circuit Switching

Circuit – All go in a logical order and follow the
same route.

Packet – Goes multiple routes and reassembled
at the other end.
Youtube Video
The Internet Explained in 5
mins

A good video which explains how the internet
works to view webpages and how emails are
sent.
Youtube – The Internet Explained.
Protocols

Transmission Control Protocol
TCP The protocol which takes data from a user’s application
program and passes it to the IP for transfer across the internet.
The reverse operation is performed at the destination
computer,
i.e. the TCP reassembles the data (from individual packets)
and forwards them to the user’s application program. The
close relation with the IP means that the terms are usually
used in combination, i.e. TCP/IP.

File Transfer Protocol
FTP A standard protocol which allows " les to be transferred
between two computers on a TCP-based network. It is
commonly used to download programs to your computer
from other servers and to upload web pages that you have
created to the server that is hosting them on the internet.
Software as service cloud
computing

Cloud computing means using computer services
on another organisation’s computers, which are
known as hosts. The services are provided by
organisations known as hosting companies.
Databse Recap

Mr Cole want’s to start up his own online “Netflix”

Create a table for his customers and a table for
his Films.

Remember to include a Primary Key, Foreign Key
and the Data Types.
Any Topics you want to
cover?
Welcome to
Café Applicaciones !
We have completed this revision part of the lesson, add an entry into
your revision booklets, take 5 minutes to unwind, relax and make sure
your prepared for the exam NEXT WEEK!.
Sit back, have a biscuit, in Café Applicaciones and add an entry to
your revision booklet.
What to include?
Packet / Circuit Switiching
Primary and Foreign Keys
Protocols
Remember – Put the time in, get the
results!
Tea and Coffee –
Sold Out