Data Transmission Issues - Content Flashcards
Why is data transmission important?
It involves sending digital messages between devices in a network over the Internet or in a LAN.
What are some security considerations in data transmission?
– User authentication
– firewalls.
– encryption.
Why should user authentication be considered in data transmission?
It prevents unauthorised access by hackers by using usernames and passwords to authenticate users that have permission.
Why should firewalls be considered in data transmission?
They monitor traffic to prevent unauthorised access and dangerous data packets being entered into the system.
Why should encryption be considered in data transmission?
It ensures intercepted data cannot be read. HTTPS is a commonly used method for secure data transmission.
What is bandwidth?
It is the rate of data transfer over a network. It is usually measured in bits per second.
What is latency?
It is the time delay for a data packet to transfer to its destination. It is usually measured in milliseconds.
What are the implications of bandwidth and latency for data transmission?
Browsing the internet requires good bandwidth because it affects how long files take to download.
Online gaming and video calls need low latency and high bandwidth because of the amount of data transferred.
What are other factors that should be considered in data transmission issues?
-compression (lossy and lossless)
-codec (a program used to compress and decompress video and audio files. It reduces space taken up on a disk)
