Topics From Past Papers I Didnt Know Flashcards
(18 cards)
1.2.4 what are the four main programming structures?
Sequence - code is executed line by line
Selection - IF statements
Iteration - Loops such as WHILE FOR etc
Recursion - Functions express themselves
1.3.3 What is the TCP/IP stack?
It is divided into a stack of:
Application layer -states what protocol is required
Transport layer -establishes an end to end connection
Network layer -add the destination
Link layer adds the MAC address and Network interface card of the source and destination
What are ethical implications?
Ethics are concerned with the values of an economy and how it impacts different groups of people.
What are the 4 laws we need to know?
Data protection act
Computer misuse act
Copyright design and patent act
Regulatory of investigatory powers act
What does the data protection act state?
How personal data should be handled fairly lawfully and collected with purpose, should not be held for too long, shall be processed in accordance
What does the computer misuse act state?
Using a computer its permission
Using a computer with malicious intent
Modifying computer material
What does the copyright act state?
It is to protect people’s property online
What does the regulatory of investigatory powers act state?
It allows for investigation surveillance and interception of communication to be used. If a warrant is allowed data can be facilitated
How to write directly not a document using JavaScript?
Document.write(“hello”); Make SURE TO INCLUDE ;
How to alert someone in JavaScript?
Alert(“stop”);
What are advantages of using Java script ?
Reduces web traffic
Eases the load on busy servers
Local computer can deal with invalid data
When does the interrupt happen?
At the end of every FDE cycle
What is peer to peer networkcand advantages and disadvantages?
Computers are connected together to share files
+ cheap
+ easy to maintain
+ no need for specialist staff
- poor security
- hard to locate resources
What is a protocol ?
A set of rules defining how computers communicate
What are commonly used protocols?
HTTP (hyper text transfer protocol) - used for web page rendering
TCP/IP (transmission control protocol) - networking protocol
POP(post office protocol) - mailing protocol
FTP (file transfer protocol) -transmits files over a network
What is the purpose of DNS
It links the server to the world . It translates the domain name into the IP address of the website we want to access
What are gateways?
