HirePro OS & Networking Quiz-1

ISP is for Internet Service Provider, and DSL stands for Digital Subscriber Line.
The same business that provides a phone connection in a digital subscriber line system also serves as an ISP. Through the already-installed telephone lines, internet access is given.

Cable modem termination system is known by the acronym CMTS.Cable internet access makes use of it.The companies that supply such connections do not often also offer telephone access, and internet access via cable is not provided over telephone lines.

Network Access Layer, Internet Layer, Host to Host Layer, and Application Layer make up the TCP/IP Model's four layers.

The OSI model has seven layers i.e. physical layer, Data Link layer, Network layer, Transport layer, session layer, presentation layer and application layer.

The final system implements not just the application layer but also the presentation layer, session layer, and transport layer.The levels below are implemented in systems other than the final one, such as routers for the network layer and media for the physical layer.

System Calls provide an interface for utilizing the operating system's functions.
For the most part, these are C and C++ functions.
The most commonly used system calls include Open, Close, Read, and Write.

Real-time operating systems include VxWorks, QNX, and RTLinux. A mobile operating system is Palm OS. For use with Personal Digital Assistants, Palm OS is created (PDAs).

A hybrid kernel powers OS X.A hybrid kernel combines two distinct kernels. Apple is the company that creates OS X, which was formerly called Mac OS X.

When the time slot allotted to a process in a time-sharing operating system expires, the process switches from the running state to the ready state.
A time quantum or time slice is the unit of time used in time-sharing operating systems to describe CPU sharing.
A process releases the CPU on its own if it takes less than one time quantum.

Consider a process that is waiting for an I/O service and is in the "Blocked" state.It moves to the ready state once the service is finished. From the waiting state, a process never immediately enters the running state. When a CPU is allotted by the operating system, only processes that are in the ready state go into the running state.