Answer:
The Layer 4 (Transport layer)
Explanation:
The transport layer is the fourth layer of the OSI (Open Systems Interconnection) model that is responsible for transmitting data between networking devices. Some of its other functions are;
i. It maintains flow control so that the destination station does not receive more packets than it can handle or process at a particular time.
ii. it also maintains error control so that the entire message (data) sent arrives at the layer without any error due to incompleteness, loss, damage or duplication.
Answer:
4G/5G.
Explanation:
The broadband cellular network technology that mobile platforms utilize to stream voice, IP telephony, mobile internet access, video calling, gaming services, cloud computing, high-definition mobile TV, and mobile 3-D TV is 4G/5G.
4G technology refers to the fourth generation broadband cellular network technology that is typically used for cellular communications on mobile phones and it is considered to have an internet speed that is ten times faster than what is obtainable on the third generation (3G) broadband technology.
Similarly, 5G is the fifth generation broadband cellular network technology that succeeded 4G and it offers higher quality in terms of performance, reliability, availability and efficiency.
As a result of the speed and high quality specifications of the 4G/5G broadband cellular network technology, they are widely used for various communications systems.
Answer:
command line and graphical user interface
Explanation:
there were (and still are) operating system with no graphical user interface at all, as for example some Unix releases