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.
Answer:
B. Have the user press the appropriate function key combination to enable the wireless radio and then attempt to connect to the wireless network.
Explanation:
Every more often than not, users may experience wireless connection problems. How they respond to these issues solely depends on various factors. When a user like this has issues connecting to the network, first on the list of proper troubleshooting procedures is to check whether the wireless adapter or the function key that turns the wireless radio connection on is toggled on. Sometimes the most obvious causes are the hardest to see. The user should check this first because it will save him or her lots of troubleshooting time if the switch was simply physically disabled.
Answer:
import java.util.Scanner;
public class ss11{
public static void main (String[]args) {
Scanner keyboard = new Scanner (System.in)
String a1, a2, a3, a4, a5;
int i1, i2, i3, i4, i5;
System.out.println("Enter a four bit binary number:");
a1= keyboard.next();
a2= a1.substring(0,1);
a3= a1.substring(1,2);
a4= a1.substring(2,3);
a5= a1.substring(3,4);
i1 = Integer.parseInt(a2);
i2 = Integer.parseInt(a3);
i3 = Integer.parseInt(a4);
i4 = Integer.parseInt(a5);
i1= i1 * 8;
i2= i1 * 4;
i3= i1 * 2;
i4= i1 * 1;
i5= i1+i2+i3+i4;
System.out.println("The converted decimal number is: +i5);
}
}
Explanation:
Answer:
The output of this code can be given as follows:
Output:
Here There Everywhere
But notin Texas
Explanation:
In the give java code a class "Questions" is defined inside this class the main method is defined in the main method we use three print function that can be described as follows:
- In the first print function, we print the message that is "Here".
- In the second and third print function, we use println that print data or message in the next line that is "There Everywhere"
and in the next line "But not" and "in Texas".
Answer:
Following are the program in the Python Programming language.
#define function
def negative_num(num_list):
#set list type variable
nlist=[]
#set the for loop
for n in num_list:
#check negative numbers
if(n<0):
#add the value of n in list
nlist.append(n)
#return list
return nlist
#set new list type variable that store list
newl=[-5,8,-6,3,-4,9,-7]
#print and call the function
print(negative_num(newl))
<u>Output</u>:
[-5, -6, -4, -7]
Explanation:
Here, we define the function "negative_num" and pass an argument "num_list" in its parameter and inside the function.
- Set new list data type variable "nlist".
- Set the for loop which iterate as the list.
- Set the if conditional statement to check the value of the list is less than 0 then, add that negative values in the variable "nlist".
- Then, return the new list.
Finally, we set a variable "newl" which store the list of negative and positive numbers then, we print and call the function.
