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Flashcard 3842525236492

Question
In linux, in networking, what is the use of ports?
Answer
Packets are being sent in steams to the target machine and there are multiple streams of data being sent/received simultaniously. Ports (i.e. port numbers) are used by the kernel to determine which packet goes to which application, as each running application is listening on a particular port (e.g. http server on port 80, ssh on port 22, db on another port, etc)

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26. TCP and UDP
gins at IHL * 4 + 20 + options * 4 and ends at Length - 1 The minimum combined TCP/IP header is thus 40 bytes. With Internet machines, several applications often communicate simultaneously. The <span>Source port and Destination port fields identify and distinguish individual streams. In the case of web communication, the destination port (from the clients point of view) is port 80, and hence all outgoing traffic wi






Article 6665437056268

ADHD College Tips

Every autumn, thousands and thousands of students move away from the structure and safety net of home to the freedoms of college life. While it can be an exciting time, filled with all sorts of possibilities for learning and growth, it can also be a time of anxiety and overwhelm—especially for students with attention-deficit/hyperactivity disorder (ADHD). College students with ADHD face greater responsibilities, less structured time, many more distractions, and new social situations. At the same time, they lack many of the previous support systems they may have had in high school. Qualities of a Successful Student Sarah D. Wright, ADHD coach and author of Fidget to Focus: Outwit Your Boredom—Sensory Strategies for Living with ADD, explains that successful students usually have four main qualities that help them achieve their goals:1 Sticking with things even when the going gets tough (perseverance) Ability to delay gratification and focus on the big picture Time management and


Annotation 6665439153420

Every autumn, thousands and thousands of students move away from the structure and safety net of home to the freedoms of college life. While it can be an exciting time, filled with all sorts of possibilities for learning and growth, it can also be a time of anxiety and overwhelm—especially for students with attention-deficit/hyperactivity disorder (ADHD).
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ADHD College Tips
Every autumn, thousands and thousands of students move away from the structure and safety net of home to the freedoms of college life. While it can be an exciting time, filled with all sorts of possibilities for learning and growth, it can also be a time of anxiety and overwhelm—especially for students with attention-deficit/hyperactivity disorder (ADHD). College students with ADHD face greater responsibilities, less structured time, many more distractions, and new social situations. At the same time, they lack many of the previous suppo