Types of Network and Defensive Design

Which of these is a characteristic of a LAN?

• It covers a wide geographical area

• Computers are connected together using a leased line or a satellite

• Users can share files and peripherals

• Data can only be transmitted at a very slow rate

Which of these is a characteristic of a WAN?

• It covers a small geographical area

• Normally has a lower bandwidth than a LAN

• It is contained within one building

• Users are not able to share files and peripherals

Which of these statements is true?

• A client-server network has a central computer that provides services to the rest of the network

• A client-server network is cheap and easy to set up

• A client-server network cannot be used to share files

• Each computer on a client-server network is maintain separately

Where are you most likely to find a peer-to-per network?

• In a large organisation

• In a home

• In a large office

• Across several offices in a company

Which of these is a benefit of a peer-to-peer network?

• Antivirus scans can be run across all computers from one computer

• All software updates can be run across all computers from one computer

• All computers can be maintained from one computer

• Files and peripherals can be shared

Which of these is not a method for ensuring a program is robust?

• Data Validation

• Authentication

• Data Sanitisation

• Keeping passwords safe

Why is code indented?

• To group together a function

• The code does not use a { syntax and indentation is used instead

• To make it easier to read

• All of the above

What is data validation?

• Checking that the data entered is wrong

• Checking that the data entered is correct

• Checking that the data entered is sensible or reasonable

• Checking the data entered was not spelt incorrect

Which is these IS NOT an example of validation?

• Checking the number entered is 2 digits

• Asking a user to enter the same data in twice

• Use of a Lookup table

• Use of a presence check

What does a range check do?

• Checks data across a range of numbers

• Where three types of data are used

• Checks the data is within an acceptable range

• Checks that the data is in the correct format