Topic 8 - The Role Of The Operating Systems Flashcards
What is the operating system on a digital device?
The operating system on a digital device is the link between the hardware and the software.
It passes messages back and forth and carries out instuctions from the software to the hardware
How does Operating systems simplify networking?
Operating systems simplify networking in a computer
How does the operating system implements a number of networking technologies such as:
The TCP/IP stack
Network utility programs such as traceroute
Devices drivers for the network interface card
What is the TCP/IP stack?
The TCP/IP stack is the set of protocols used for transmitting data over the internet. The data over the internet.
Where does TCP/IP data transmition take palce?
The data transmission takes place in the layor (or steps).
What are commonly build into operating systems to improve security?
A number of features are commonly built into operating systems to helo improve secuirty
List the 3 features of security
User inteerface
Antivirus and firewall software
Backup facilities
What does Memory management do?
The operating system manages the computer’s resources such as its memory
How does the operating system decide or track memory management?
It does that by: (4 reasons)
Which process to allocate memory to
How much memory to allocate to each process
When to un-allocate memory
Trasferring data to the pagefile (or swapfile) on the HDD temporarily to free RAM (paging or swapping)
How do operating systems allow you to run more than one application simultaneously?
They do this the operating system must be able to allocate resources (CPU, memory , disk space) to each application in order to allow it to complete two or more tasks simultaneously.
