Fundamentals of Computing Test

What is meant by a data packet? (6-9)

• A unit of data that travels along a network
• The number of error found in data when it has been transmitted
• The data a computer needs to connect to a network
• A connection point in a network that allows data to be shared

Which transmission media is capable of having a much bigger bandwidth?

• Coaxial

• Twisted pair cable

• Plastic

• Fibre optic

What is the Internet?

• The World Wide Web
• A collection of interconnected networks
• A place where a huge amount of information is stored
• A single network controlled by a central computer

Data is sent over the Internet in small chunks or “packets”. As well as the data, each packet contains:

• the number of characters in the packet
• the speed at which it is to be transmitted
• the route that the packet is to take
• the ‘from’ and ‘to’ addresses and the number of the packet

In a packet switching network:

• Each packet contains the entire message being sent
• All packets travel via the same route from sender to recipient
• Any type of data (e.g. text, sound, images, video) can be sent
• The sender decides how many packets are to be used

In a packet switching network, if the connection between two nodes on the route between sender and destination is broken:

• the entire message must be resent
• the packet takes an alternative route to the destination
• the sender is notified that transmission has failed
• the packet is delayed until the connection is restored

Which of these can be used to connect a computer to the Internet?

• fibe-optic broadband
• wireless (Wi-Fi)
• satellite
• all of these

What are the only two numbers you can use in binary?

• 0 and 1
• 1 and 2
• 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
• 1, 2, 4, 8, 16

Tags

CCSS.4.NBT.A.2

What is the point of binary?

• It represents how computers interpret electrical signals
• Because we like to make you do extra maths ;-D
• For the lulz
• Because it describes star systems

Convert 37 to binary

• 00100101
• 00100011
• 00100111
• 01000101