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3 years ago

What is the range of the well-known ports used by tcp and udp?

1 answer:

8 0

/etc/services on my CentOS machine goes up to 49000. Reserved ports are less than 1024.

Well known and reserved ports are two different things. Well known ports only need a registration with IANA. Reserved ports, on *nixes, requires root for a deamon to bind to the port.

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The marketplace for computer hardware:________ 1. has become increasingly concentrated in top firms 2. has expanded to include a

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Answer:

the answer should be 1.

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3 years ago

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You should always be afraid to use the internet True or false?

ch4aika [34]

Answer:

false

Explanation:

you should be but in the same time no

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3 years ago

He smallest network is a ______________________, which is a network of personal devices, such as the network you use when you sy

scoray [572]

The smallest network is a personal area network, which is a network of personal devices, such as the network you use when you sync your cell phone and your computer. personal area network

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3 years ago

An enhancement to a computer accelerates some mode of execution by a factor of 10. The enhanced mode is used 50% of the time, me

Ann [662]

Answer:

The answer is "5.5 and 90.90%"

Explanation:

For point 1:

To calculate the speed from fast mode, its run time without enhancement should be worked out. Designers are aware of which two selves are implicated throughout the accelerated project planning: the empty ( $50 \%$ ) and the increased stages ( $50 \%$ ).

Although not enhanced, this would take almost as long ( $50 \%$ ) and for the combine to give phase; even so, the increased phase would've been 10 times longer, as well as $500 \%$ . Thus the corresponding total speed without enhancement is $=50\% + 500\% = 550\%.$

Its overall speed is:

$=\frac{\text{Accelerated runtime}}{ \text{accelerated runtime}} = \frac{550 \%}{ 100 \%}= 5.5$

For point 2:

We re-connect these figures in Amdahl's Law throughout order to identify how long it would take for both the initial implementation:

$\text{Vectorized fraction}= \frac{\text{Overall velocity}\times \text{Accelerated acceleration}-\text{Accelerated acceleration}}{\text{Overall acceleration} \times \text{Accelerated acceleration}-\text{Overall acceleration}}$

$= \frac{5.5 \times 10 -10 }{ 5.5 \times 10 - 5.5}\\\\=\frac{45}{49.5}\\\\=0.9090\\\\=90.90\%$

5 0

2 years ago

State 3 file formats explain them in an understanding manner apart from Microsoft word and PDF

natita [175]

Answer:

Hope below explanations are enough.

Explanation:

1. JPEG (or JPG) - Joint Photographic Experts Group

JPEGs might be the most common file type you run across on the web, and more than likely the kind of image that is in your company's MS Word version of its letterhead. JPEGs are known for their "lossy" compression, meaning that the quality of the image decreases as the file size decreases.

You can use JPEGs for projects on the web, in Microsoft Office documents, or for projects that require printing at a high resolution. Paying attention to the resolution and file size with JPEGs is essential in order to produce a nice looking project.

2. PNG - Portable Network Graphics

PNGs are amazing for interactive documents such as web pages, but are not suitable for print. While PNGs are "lossless," meaning you can edit them and not lose quality, they are still low resolution.

The reason PNGs are used in most web projects is that you can save your image with more colors on a transparent background. This makes for a much sharper, web-quality image.

3. GIF - Graphics Interchange Format

GIFs are most common in their animated form, which are all the rage on Tumblr pages and in banner ads. It seems like every other day we have a new Grumpy Cat or Honey Boo Boo animated GIF. In their more basic form, GIFs are formed from up to 256 colors in the RGB colorspace. Due to the limited number of colors, the file size is drastically reduced.

This is a common file type for web projects where an image needs to load very quickly, as opposed to one that needs to retain a higher level of quality.

4. TIFF - Tagged Image File

A TIF is a large raster file that doesn't lose quality. This file type is known for using "lossless compression," meaning the original image data is maintained regardless of how often you might copy, re-save, or compress the original file.

Despite TIFF images' ability to recover their quality after manipulation, you should avoid using this file type on the web -- it can take forever to load. TIFF files are also commonly used when saving photographs for print.

5. PSD - Photoshop Document

PSDs are files that are created and saved in Adobe Photoshop, the most popular graphics editing software ever. This type of file contains "layers" that make modifying the image much easier to handle. This is also the program that generates the raster file types mentioned above.

The largest disadvantage to PSDs is that Photoshop works with raster images as opposed to vector images.

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3 years ago