Figure 1: An image — an array or a matrix of pixels arranged in columns and rows.
In a (8-bit) greyscale image each picture element has an assigned intensity that
ranges from 0 to 255. A grey scale image is what people normally call a black and
white image, but the name emphasizes that such an image will also include many
shades of grey.
Figure 2: Each pixel has a value from 0 (black) to 255 (white). The possible range of the pixel
values depend on the colour depth of the image, here 8 bit = 256 tones or greyscales.
A normal greyscale image has 8 bit colour depth = 256 greyscales. A “true colour”
image has 24 bit colour depth = 8 x 8 x 8 bits = 256 x 256 x 256 colours = ~16
million colours.
Answer:
Option(d) is the correct answer to the given question .
Explanation:
There are various type of algorithm is used for the purpose of the key scheduling such as AES .in the AES algorithm we used same key for encryption and decryption of text .The main objective of the AES algorithm it is used by Various round of the similar plain text encryption to reinforce the cipher text.
- The Option (a) is wrong because In the key scheduling the creating keys are not being used one after just another in the various communication cycles.
- The Option (b) is wrong because In the key scheduling we do not used the the random key for the encryption process .
- The Option (c) is wrong because we will never arbitrarily subdivided into groups of public and private key.
Answer:
CASE
Explanation:
Case Structure is a mechanism that allows different executions when there are several distinct possible values for a single variable, and each value requires a different subsequent action depending on the value of the label.
Case structure is also a conditional control structure that appears in most modern programming languages and allows a selection to be made between several sets of program statements.
Answer:
(A) A web page will not display in a browser unless it passes syntax validation testing.
(C)A web page must pass syntax validation testing before it is used.
Explanation:
A website is a collection of related web pages. A web page is an electronically arranged content page, designed and developed using web development application and language tool and hosted on a web server.
Web page or application development follows a series of well defined stages called software development life cycle (SDLC). The web application must go through these processes from birth to the end-of-life of the application.
The validation testing in SDLC, consisting of unit, acceptance and loading testing, which checks for syntax error or bugs on the written codes, because bugs could slow the loading of the page or even the display and browser compatibility of elements in the code.
Playing Minecraft on a public server can take the game to a whole. This will help your kid learn social skills, such as cooperating, while there are some family-friendly servers for the Pocket Edition most server admins can “roll back” your building to the state it was in.
Explanation:
- For Minecraft, you'll need to forward TCP port 25565 . You'll also need to enter your server's local IP address as the Output IP or Server IP for the forwarded port. This tells the router which device to point at. To find your server's local IP, open a command prompt and enter ipconfig.
- They are safe for the most part, however they do expose you to the following risks, which can generally be negated by simply joining reputable servers. Some servers may ask users to set up an AuthMe password. If you decide to enter a password here, never ever enter the password of your Minecraft account.
- You can divide public Minecraft servers into two types:
- Whitelisted servers are protected by a whitelist — that is, a list of usernames that are allowed to join the server. To join a whitelisted server, you need to apply to have your Minecraft username added to the whitelist. Typically, this involves filling out a form and waiting a few hours or days.
- Non-whitelisted servers do not have a whitelist, which means anyone can join the server simply by entering the server’s address in their Minecraft client, as shown above.
- Applying for a whitelisted server can be a bit of a drag especially when you have an impatient eight-year-old tugging at your sleeve but it does provide an extra degree of reassurance that all the players on the server are known to the server administrators.
