Answer:
Header files serve two purposes. System header files declare the interfaces to parts of the operating system. You include them in your program to supply the definitions and declarations you need to invoke system calls and libraries.
It’s either b or c, but my final answer would be C
Answer:
The answer is consistency
Explanation:
Information systems deal with the retrieval, storage, manipulation and sharing of data for organisational needs. It is important that there are measures in place that corresponds to data validity standards. The process that ensures that operations meet these standards is known as consistency.
This is very necessary for information systems.
Answer:true
Explanation: we cant rely on computers
Answer:
The Session layer (Layer 5)
Explanation:
The OSI (Open Systems Interconnection) seven-layer model is a reference model that explains how devices (or applications) communicate over the network. The model consists basically of seven different layers which are;
i. Layer 1 or the physical layer
ii. Layer 2 or the data-link layer
iii. Layer 3 or the network layer
iv. Layer 4 or the transport layer
v. Layer 5 or the Session layer
vi. Layer 6 or the presentation layer
vii. Layer 7 or the application layer.
Out of the seven layers, the session layer (layer 5) keeps track of a system's connections to send the right response to the right computer by setting up, coordinating and managing these connections. It controls, establishes and maintains the connection between multiple computers or applications on a computer.
