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WorksheetsPearson 1CP2 - 4.1 - Wired and Wireless Connections
Total questions: 25
Worksheet time: 13mins
What type of trasmission media usually consist of either copper wire or fibre optic cable?
wireless
wired
radio
infrared
What is the range of copper wire as a network transmission medium?
What is the range of fibre optic cable as a network transmission medium?
Up to 80 kilometers
What is the bps of copper wire?
What is the bps of fibre-optic cable?
What can cause latency in copper wire connections?
Electrical interference and signal degradation
What can cause latency on fibre-optic connections?
Network congestion only. It is immune to electrical interference
What is the most common application for fibre-optic cable?
High-speed data transmission e.g. the internet
What is the most common application for twisted pair copper cable?
Internet (WAN) communications
Ethernet (LAN) networks
How do fibre-optic cables transmit data?
Pulses of light travel along the cable's core
How do copper wires transmit data around a network?
What type of transmission media uses radio waves to transmit data through the air?
What is the most well-known wireless transmission protocol?
What wireless transmission technology is used in contactless card payments?
Which wired tansmission medium is susceptible to interference and latency increases the further the signal travels?
Copper cable
What type of transmission medium is used to connect LANs together to form WANs and provide broadband services to private homes and businesses
What is the term given to identify the distance over which data can be transferred?
Bandwidth
Range
Tunneling Distance
What type of wireless technology allows for pairing between devices e.g. a phone with wireless headphones?
What is the bps of WiFi?
WiFi can travel 100 meters at 20 Gbps
WiFi can travel 2 meters at 1 Gbps
WiFi can travel 10 meters at 100 Gbps
WiFi can travel 100 meters at 10 Gbps
What are the two main frequency ranges of WiFi?
What piece of networking hardware do wirelessly enabled devices communicate with?
internet router
What factors can interrupt the communication across a wireless network?
Time of day as this can lead to increases and decreases in activity.
Weather conditions, the overall outdoor temperature and the packet loss rate of the ISP.
Number of connected devices, hackers and individuals infiltrating the network, and the strength of the electricity.
As attackers can easily eavesdrop on a wireless network by intercepting radio signals, what measure must be taken in order to secure any data that is transferred?
Encrypt each piece of data transferred
What wireless transmission technology uses low-power radio waves and can connect thousands of IoT devices with radio transmitters/receivers embedded within them.
Bluetooth
What wireless transmission technology uses electromagnetic fields to identify and track radio tags attached to objects in shops (to prevent shoplifters)?
