Answer:
1. Processor communication -- this involves the following tasks:
<em>a. exchange of data between processor and I/O module</em>
<em>b. command decoding - I/O module accepts commands sent from the processor. E.g., the I/O module for a disk drive may accept the following commands from the processor: READ SECTOR, WRITE SECTOR, SEEK track, etc. </em>
<em>c. status reporting – The device must be able to report its status to the processor, e.g., disk drive busy, ready etc. Status reporting may also involve reporting various errors. </em>
<em>d. Address recognition – Each I/O device has a unique address and the I/O module must recognize this address. </em>
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2. Device communication – The I/O module must be able to perform device communication such as status reporting.
3. Control & timing – The I/O module must be able to co-ordinate the flow of data between the internal resources (such as processor, memory) and external devices.
4. Data buffering – This is necessary as there is a speed mismatch between speed of data transfer between processor and memory and external devices. Data coming from the main memory are sent to an I/O module in a rapid burst. The data is buffered in the I/O module and then sent to the peripheral device at its rate.
5. Error detection – The I/O module must also be able to detect errors and report them to the processor. These errors may be mechanical errors (such as paper jam in a printer), or changes in the bit pattern of transmitted data. A common way of detecting such errors is by using parity bits.
Answer:
"Network layer" is the correct answer to the given question .
Explanation:
The network layer is interconnected with different networks by providing permission to the network. This job is done by sending the packets in the network. The main aim of the network layer is to provide the logical addressing, routing, and fragmentation of packets.
The network layer is the layer of the OSI model whose primary function is moving the packets or datagrams in the internetwork which is connected by the routers.
Answer:
the answer for the question is D.
Answer:
Yes
Explanation:
1920x1200 is a non-standard resolution which may not be fully supported, usually 1920x1080 (1080p) is preferred and has been standardised as a display resolution.
2560x1600 (WQXGA) is a more standardised display resolution, and will offer a lot sharper and crisper images as more pixels are being used to render the image. As a rule of thumb, the higher resolution - the better.
The difference between these two resolutions is about the same difference as 1080p and 2k, you are going to get twice as crisp an image.
However there are other factors, such as refresh rate that may come into play with a comparison with these two.
