Answer:
MAC Addresses (Destination and Source MAC address)
Explanation:
A switch has 3 primary functions:
- Forward frames
- Learn addresses
- Avoid loops
An Ethernet frame has the header, data and trailer and there are two specific fields in the header that helps the switch to know where to send data in future transmissions.
- destination MAC address
- source MAC address
every Ethernet frame has this and when the frame hits a switch or any device, any device can look at it ( an Ethernet frame ) and know where it is suppose to go and where it came from.
Every switch has a MAC address table where it stores MAC addresses of different computers on the network.
Example:
When a PC1 sends a frame to PC2 through a switch, the switch looks at the header of the Ethernet frame for the source mac address and adds the source MAC address to its MAC address table and also the port that it came through.
simply put:
A switch looks at the source MAC address to see if it knows it already, if it does. Great! no need to add it again to it's address table.
If it doesn't, it adds it's source address and the port that the frame came from.
This basically how the switch populates its MAC address table.
How social media affects communication negatively
The following are the ways in which social media affects communication negatively
1)Internet-the internet has made it easier to communicate too much use can result to addiction . Internet addiction make most of youths skip vital activities like homework,social activities among others.
2)Text messages-The use of instant messaging has become popular especially among teens.Use of symbols such as emojis and abbreviated words has made many people to become too cusual on language use.
The use of fewer syllables and shorter words is likely to make teens leave out important aspects of verbal communication and may lead to misinterpretation of messages.
3)Dialogue- Internet communication mostly takes place in the written form as opposed to the spoken form. Teens primarily communicate through textual posts,emails e.t.c all of which are in the written form.
Since written communication typically occurs in form of monologue, teens addicted to the internet may find it difficult to engage in dialogue a feature of verbal communication.For instance they may find it difficult to effectively use aspects of verbal communication such as tonal variation turn taking and speed.
<span>4)Informal language- </span>The use of informal language is a salient feature of internet communication.This has a negative effect on teens mastery of formal language.
Internet language has features of informal language such as short turn taking, exclusion of auxiliary verbs and pronouns.
This could be due to the reason that teens put more emphasis on speed and efficiency at the expense of grammar.
5)Listening skills-listening skills is an important aspect of verb communication and effective listening enhances communication.
Effective listening entails being information literate which is the ability to identify which information is needed when it is needed,where to find it, and effectively using it.
Answer:
The program in C++ is as follows:
#include <iostream>
using namespace std;
int perimeter(int side1, int side2, int side3){
return side1+side2+side3;
}
struct Triangle {
int side1; int side2; int side3;
};
int main(void) {
int side1, side2, side3;
cout<<"Sides of the triangle: ";
cin>>side1>>side2>>side3;
struct Triangle T;
T.side1 = side1;
T.side2 = side2;
T.side3 = side3;
cout << "Perimeter: " << perimeter(T.side1,T.side2,T.side3) << endl;
return 0;
}
Explanation:
See attachment for complete code where comments are as explanation
The answer to this is 'for'
