Which feature of fibre optic cable allows it to carry data at a higher bandwidth than copper cable?
It carries data as pulses of light
A video editor needs to copy a very large file between two computers on the same network. Which connection will transfer the file most quickly?
A wired link with high bandwidth
Why does a wired Ethernet connection usually have lower latency than a wireless connection?
The cable reduces interference
Which is a disadvantage of using wired connectivity compared with wireless connectivity?
Devices can only be placed where a cable reaches
What is meant by 'latency'?
The delay between data being sent and it arriving at its destination
Which term describes the maximum distance over which data can be transmitted before the signal becomes too weak?
Range
What is meant by 'fibre optic cable'?
A cable that transmits data as pulses of light and can carry it over long distances
Fibre optic cable carries data along thin strands of which material?
Glass
A factory has machines that create strong electrical interference. Why is fibre optic cable the best choice for its network cabling?
Light signals are unaffected by electrical interference
Why can a fibre optic cable carry data over a longer distance than a copper cable before the signal needs to be boosted?
The signal weakens less as it travels through the cable
What is meant by bandwidth?
The amount of data that can be transferred in a given time
A network manager is choosing between two wired connections for an online game server. Connection A has high bandwidth and high latency. Connection B has lower bandwidth and low latency. Which connection is better for the game and why?
Connection B because low latency reduces delays
Why can a wired Ethernet connection usually have a higher bandwidth than a wireless connection?
The cable gives data a dedicated path
What is meant by Ethernet?
A family of standards that describe how data is formatted for transmission on the same network
Which term means the amount of data that can be transferred along a connection in a given time?
Bandwidth
Which term describes the time delay between a device sending data and the reply arriving?
Latency
Why does a wired connection usually give a more reliable transfer than a wireless connection in the same room?
The signal is not affected by interference from other devices
Why is a wired network usually harder for an attacker to intercept than a wireless network?
The attacker must physically connect to the cable
Ten computers in a school office download a large file at the same time. Each download is slower than when one computer does it alone. Why?
The bandwidth is shared between the computers
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