WorksheetsNetworks, the Internet, Packets and Reliability
Total questions: 25
Worksheet time: 13mins
What is a network?
1 computer not connected to anything
a job where you make fishing nets
2 or more computers connected together
Viruses and malware cannot spread via a computer network.
True
False
What is a data collision?
When two devices on a network transmit data at the same time
When two devices on a network transmit data at separate times.
What is a packet?
packets are big groups of information sent over the Internet
packets are small groups of information sent over the Internet
A computer network is where two or more devices are connected together so they can share...
people
cables
resources
_____ are rules that define how messages between computers are sent.
Pathways
Protocols
Packets
What happens when the destination computer does not receive a packet for a video?
Nothing
Asks for the packet to be resent
______ manage the _________ that data packets travel across the Internet and networks.
Protocols, pathways
Networks, packets
Pathways, nodes
Pathways, protocols
_______ are small amounts of computer data sent over a ______.
Data, pathway
Packets, network
Nodes, network
Packets, pathway
______are a group of connected computing devices.
Pathways
Nodes
Networks
The _______ is a network of _________.
Pathways, nodes
Internet, networks
Pathways, nodes
What are three different ways computers or devices in networks can connect to one another?
figure 8, star, bus
bus, double ring, star
ring, star, bus
_________ are small amounts of computer _________ sent over a network.
Protocols, data
Packets, data
Data, protocols
Nodes, packets
________ sent over __________ and the _________ are sent across different paths and at different speeds.
Protocols, nodes, network
Packets, networks, Internet
Data, pathways, network
Data, networks, Internet
Every packet contains the source IP address and the destination IP address.
True
False
Identify the Internet system that verifies delivery of packets.
HTTP - Hyper Text Transfer Protocol
TCP - Transmission Control Protocol
SMTP - Simple Mail Transfer Protocol
Identify 2 factors that affect the 'cheapest' path for packets to travel to their destination.
relationships between companies
the number of packets
Time
Money
Packets sent to a specific address do not have to travel the same path or even in order.
True
False
What are the 2 main components that allow the Internet to grow?
packets and HTTP
Fault tolerance and redundancy
What is a key factor in network reliability?
only one way for packets to travel to a destination
multiple paths to send packets
Instead of boxes and envelopes, the Internet sends what?
pixels
binary information
cryptography
images
When did the design for the Internet first start?
1970's
1980's
1990's
after 2000
Information can be sent over the Internet using:
electricity
radio waves
light
all of the above
Messages on the Internet
Follow a direct path.
Do not follow a direct path.
What happens when an important router gets destroyed?
The Internet stops working.
The packets just find another route and are forwarded by another router.
The messages are lost.
