Computer Networks and Operating Systems Hamza Shahid (13137133) ABSTRACT Part 1: Operating Systems Overview Part 2: Virtualisation What is an Operating System? Table of Contents Explain what an Operating System is, in the context of personal computers. 3 What is an Operating System (OS)? 3 Operating Systems 5 Monolithic 5 Micro-Kernel 5 Layered 6 Explain what virtualisation is in the context of operating systems, and the role of a virtual machine monitor (VMM). 7 What is Virtualisation? 7 Operating System Overview “Operating system, n. The low-level software that supports a computer 's basic functions, such as scheduling tasks, controlling …show more content…
If a process took 45 minutes then the user would have to run 2 blocks simultaneously, taking up 1 hour, this means 15 minutes would be wasted, as the process wouldn’t actually take that long. This means that running a number of processes would take too long. This is considered Phase 1 of Operating systems and is called Serial Processing Phase 2 consisted of batch systems, and was called Simple Batch Systems. This was one of the first OSs that removed the user access to the hardware; there was no longer any direct access, meaning there was less human error, and possible reducing the time it took to start the systems up. This OS functioned by allowing a submission of ‘Jobs’ to a Computer Operator, who would collate group jobs into a batch. These batches are then put into a program, allowing the process to take place. This reduced the number of pauses caused between each batch, allowing faster processing times. Multi-Programmed Batch Systems was an upgrade of Simple Batch Systems. This phase allowed automatic sequencing, which removed the gaps between each batch/job, however the processor was very often idle. Using this system also meant that Input and Output devices took their time; waiting around for them to load would waste a lot of time. As this phase also contains Multiprocessing it allows the OS to switch between jobs while an active job is waiting. The final phase of the OS is Time-Sharing. This was again an upgrade to its
The Operating System manages the flow of data and tells the processor what component needs to be doing. It does this my relaying one piece of information at a time but done so fast it seems it is doing it all at the same time. It does this by giving the information to the processer in computer language, so it can understand.
units of operation. One of the units would be to produce the operating system and the other
Once this was determined activities and policies were changed in order to keep the machines running fully and efficiently (ex. lunch policy change).
Operating System is a main computer program that communicates with the hardware to help the computer run.
It is discussed that the this type of system is GUI based and the applications are also have the same nature. Long latency operations are keep themselves running in the
A computer network is any computer or group of computers that are linked to another computer or systems of computers so they can communicate. There are several careers that involve knowledge of computer networking. Each of these positions require a particular set of skills. While the positions may sound the same, they are not. For example, the network engineer manages and designs computer networks, upgrading them and tests their security while the network administrator keeps the network running. The network analyst is responsible for supporting the overall infrastructure of the computer network, writing software and other programs that are needed. The information systems administrator is responsible for designing, delivering, and maintaining the infrastructure that makes up the network, usually in an organization. The network technician is the one who sets up the network, troubleshoots problems and services the network to keep it running. The network information systems manager is responsible for the technicians, administrators, analysists and engineers while also planning for the network into the future (Computer Networking Majors Guide).
An operating system is a set of programs that manage computer hardware resources and provide common services for application software. (Operating Systems) Without the operating system, a computer could not function. Applications would not be able to operate
Operating system is a part of computer system software program. The operating system acts as an interface between hardware and software. It contains instruction that work together to coordinate every file, device, main memory and processing time. It includes 4 essential subsystem managers which is memory manager, processor manager, device manager and file manager.
For large systems, the operating system has even greater responsibilities and powers. It is like a traffic cop -- it makes sure that different program and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system.
Process management creates processes, and implements multitasking by switching the active process on the processor.
In other words, "You build this big system and when it is ready ,you turn the old one off and turn the new one on"(Knorr, 2005).
We are using windows 7 and 8 on all PC for our company, 2003 network servers. It comes a time for change and IPv6 is it, so we have to be prepared for it. Our company has about 100 personnel who needs network access. If we are in need more IP’s or the company grows, we might be in trouble. We need to quickly change to the latest version, from IPv4 to IPv6 in order to keep the network and company in a place for future growth.
The Xbox One is a gaming console made by Microsoft, Inc. It is in the middle of its product life, 2 years old at the time of this paper. The success of the original Xbox, and Xbox 360 provided a platform for Xbox one to succeed and capture market share for competition - Sony PS3 and Nintendo. Xbox one has become a bestselling gaming console with millions of units sold around the world.
A process is an object of a computer program that is being executed. It includes the current values of the program counter(PC), registers, and variables. The subtle difference between a process and a program is that the program is a bunch of instructions whereas the process is the activity or action. The processes waiting to be assigned to a processor are put in a queue called ready queue(RQ). The time for which a process holds the CPU is known as burst time