Answer:
D
Explanation:
because you need people to access software through hardware and data through information and procedures.
In a polling-based network receives, the operating system keeps checking the status register after a fixed time interval to see whether a device needs hardware attention or not. CPU gradually checks the status of receive bit after a defined time interval of a clock and if the value of receive bit is true then data is moved from the RX register to the memory. In interrupt-based networks, whenever a device needs hardware processing then an interrupt is raised to inform the CPU for device attention. The data of the device is transferred to memory from the network card.
Polling is a protocol, not a hardware mechanism where the device gets attention by CPU. An interrupt is a hardware mechanism, not a protocol where the device gets attention by the interrupt handler. In polling, during receiving, parts of received data need to transfer to memory but in case of interrupts, whole data is transferred at once after receiving is done. An interrupt is a heavy operation as compared to pooling because hardware involves in it. For large amounts of data, Polling becomes an inefficient method. In polling, CPU gradually checks devices at regular intervals whereas the Interrupt handler can send interrupt at any time. Each device has its own Command ready bit which indicates whether the device requires servicing or not. In polling, CPU wastes numerous clock cycles by repetitively checking the command-ready little bit of each device. In Interrupt based network, the interrupt request line indicates whether the device requires servicing or not. In interrupt-based network, CPU cycles not wasted but CPU is disturbed only when device send interrupt signals.
Relative performance between programmed I/O and DMA:
For determining the relative performance between programmed I/O and DMA, important factors are:
1. Size of data
2. Frequency of operations
Answer:
The upgrade is possible and will yield a significant increase in performance.
Explanation:
Computer systems comprises of software and hardware components. The software components of a computer are the instruction sets or programs used to control the hardware components. The hardware components are the physical parts of a computer.
The motherboard is a circuitry that connects all hardware components of the system. The CPU is the brain of the system. It must be compatible with the motherboard, else the motherboard and CPU will be damaged.
The AMD X4950 and AMD Ryzen 72700X processor are compatible with the the B450 Aorus Pro motherboard, and with the later CPU faster than the former, an upgrade increases performance.
Answer: The time zone on the California server needs to be changed.
Explanation:
The system time of the server controls much of the activities of the server client procedure as many packet sending and their acknowledgement may be in a problem if the time zone is not changed as both the server and the domain controllers are in different time zones.
Therefore, The time zone on the California server needs to be changed.
