Answer: a)Recursive
Explanation: Recursive DNS( Domain Name System) is the server that support the DNS servers in authority.They help in the management of the load that gets produced by the requests from the user. The load is managed by splitting/distributing so that the website requests becomes supportive and load can be relieved.
Other options are incorrect because they don't revert with the query message for the DNS servers processing .Thus, the correct option is option(a).
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If you are using Google Slides, Click the plus arrow in the top left hand corner of the webpage. That will add another slide to the presentation you are working on
Answer:
Explanation:
The Healing Brush and Patch tools add extra features. They match the texture, transparency, lighting, and shading of the sampled area. Instead of replacing them, pixel for pixel, like the clone stamp. This causes the painted pixels to blend seamlessly into the rest of the image. Using the Healing Brush tool: 1. Select the Healing Brush tool in the toolbox.
Answer:
Interrupt (INT) helps operating system to stop work on one process and start work on other process using interrupt signals.
Explanation:
Purpose of interrupts:
• Interrupts are useful when an I/O device needs to be serviced only occasionally at low data transfer rate.
• For example, when a peripheral requires the attention of the processor to perform an I/ O operation.
A trap:
• also known as an exception or a fault, is typically a type of synchronous interrupt caused by an exceptional condition
• is a software-generated interrupt.
• For example it's caused by division by zero or invalid memory access.
Can traps be generated intentionally by a user program? Yes.
If so, for what purpose?
• the usual way to invoke a kernel routine (a system call) because those run with a higher priority than user code.
• Handling is synchronous, so the user code is suspended and continues afterwards.
• In a sense they are active - most of the time, the code expects the trap.