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Inessa05 [86]
3 years ago
15

Which of the following answers refers to a system containing mappings of domain names to various types of data, such as numerica

l IP addresses?
Computers and Technology
1 answer:
BartSMP [9]3 years ago
5 0

Answer:

DNS or Domain Name System

Explanation:

You can query a DNS server with a domain name to get an IP address.

You might be interested in
Design a circuit that will tell whether a given month has 30 days in it.
Ipatiy [6.2K]

The simplified equation is given as Y=A_3A0+A3A0. To draw the circuit diagram using a minimum number of gates we use this equation and the x^2 equation to form the truth table. This is further explained below.

<h3>What is a circuit?</h3>

Generally, a circuit is simply defined as a full circular channel via which electricity travels in electronics. A power flow, terminals, and a drain make up a basic circuit.

In conclusion, The circuit will need 4 inputs to produce 16 combinations in order to determine if the month contains 31 days. At 4 inputs, there are 12 inputs required. the

Hence,we use this information and the x^2 equation to form the truth  table

the Equation is given as

Y=A_3A0+A3A0

Read more about  circuit

brainly.com/question/27206933

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6 0
2 years ago
Which of the following is an example of new and emerging classes of software?
Rama09 [41]
The answer is Smart technology :)
4 0
2 years ago
Where do you go to create a workbook?​
Over [174]

Answer:

The explaination of this question is given below in the explanation section

Explanation:

The following steps are used to create a workbook.

1- Go to start menu and search about EXCEL (application software) and then click on it to open.

If you already opened a EXCEL's workbook, and you want to create a new workbook, then you follow the following steps:

  1. Click the File tab.
  2. Click New.
  3. Under Available Templates, double-click Blank Workbook. Keyboard shortcut To quickly create a new, blank workbook, you can also press CTRL+N.

A new workbook will be created.

6 0
3 years ago
During which geologic era was nearly all of Earth's land concentrated into one giant mass called Pangaea?
Scorpion4ik [409]
The answer would be Mesozoic.
HOPE THIS HELPS YOU! ^_^
6 0
3 years ago
Discuss the DMA process​
shusha [124]

Answer:

Direct memory access (DMA) is a process that allows an input/output (I/O) device to send or receive data directly to or from the main memory, bypassing the CPU to speed up memory operations and this process is managed by a chip known as a DMA controller (DMAC).

Explanation:

A defined portion of memory is used to send data directly from a peripheral to the motherboard without involving the microprocessor, so that the process does not interfere with overall computer operation.

In older computers, four DMA channels were numbered 0, 1, 2 and 3. When the 16-bit industry standard architecture (ISA) expansion bus was introduced, channels 5, 6 and 7 were added.

ISA was a computer bus standard for IBM-compatible computers, allowing a device to initiate transactions (bus mastering) at a quicker speed. The ISA DMA controller has 8 DMA channels, each one of which associated with a 16-bit address and count registers.

ISA has since been replaced by accelerated graphics port (AGP) and peripheral component interconnect (PCI) expansion cards, which are much faster. Each DMA transfers approximately 2 MB of data per second.

A computer's system resource tools are used for communication between hardware and software. The four types of system resources are:

  •    I/O addresses
  •    Memory addresses.
  •    Interrupt request numbers (IRQ).
  •    Direct memory access (DMA) channels.

DMA channels are used to communicate data between the peripheral device and the system memory. All four system resources rely on certain lines on a bus. Some lines on the bus are used for IRQs, some for addresses (the I/O addresses and the memory address) and some for DMA channels.

A DMA channel enables a device to transfer data without exposing the CPU to a work overload. Without the DMA channels, the CPU copies every piece of data using a peripheral bus from the I/O device. Using a peripheral bus occupies the CPU during the read/write process and does not allow other work to be performed until the operation is completed.

With DMA, the CPU can process other tasks while data transfer is being performed. The transfer of data is first initiated by the CPU. The data block can be transferred to and from memory by the DMAC in three ways.

In burst mode, the system bus is released only after the data transfer is completed. In cycle stealing mode, during the transfer of data between the DMA channel and I/O device, the system bus is relinquished for a few clock cycles so that the CPU can perform other tasks. When the data transfer is complete, the CPU receives an interrupt request from the DMA controller. In transparent mode, the DMAC can take charge of the system bus only when it is not required by the processor.

However, using a DMA controller might cause cache coherency problems. The data stored in RAM accessed by the DMA controller may not be updated with the correct cache data if the CPU is using external memory.

Solutions include flushing cache lines before starting outgoing DMA transfers, or performing a cache invalidation on incoming DMA transfers when external writes are signaled to the cache controller.

4 0
3 years ago
Read 2 more answers
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