What are rings in Windows NT?

Correct Answer: When the OS at the explicit request of another process creates a process, this action is called process spawning

Correct Answer: It does not have the features like ability to support multiple processors virtual storage source level debugging

Correct Answer: For load-time dynamic linking: Load module to be loaded is read into memory Any reference to a target external module causes that module to be loaded and the references are updated to a relative address from the start base address of the application module With run-time dynamic loading: Some of the linking is postponed until actual reference during execution Then the correct module is loaded and linked

Correct Answer: Placement algorithms determine where in available real-memory to load a program Common methods are first-fit, next-fit, best-fit Replacement algorithms are used when memory is full, and one process (or part of a process) needs to be swapped out to accommodate a new program The replacement algorithm determines which are the partitions to be swapped out

Correct Answer: We encounter cycle stealing in the context of Direct Memory Access (DMA) Either the DMA controller can use the data bus when the CPU does not need it, or it may force the CPU to temporarily suspend operation The latter technique is called cycle stealing Note that cycle stealing can be done only at specific break points in an instruction cycle

Correct Answer: It is the transfer of sufficient amount of the state of process from one machine to the target machine

Correct Answer: - Network redirector/ Server - Cache manager - File systems - Network driver - Device driver

Correct Answer: DDks are device driver kits, which are equivalent to SDKs for writing device drivers Windows NT includes DDks

Correct Answer: Virtual memory is hardware technique where the system appears to have more memory that it actually does This is done by time-sharing, the physical memory and storage parts of the memory one disk when they are not actively being used

Correct Answer: Distributed systems work in a network They can share the network resources,communicate with each other