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timurjin [86]
3 years ago
14

A hub transmits all incoming messages to all of its ports except the port where the messages came in. A switch usually sends mes

sages only to the destination computer. What information does a switch collect from messages crossing its interfaces so it knows where to send data in future transmissions?
Computers and Technology
2 answers:
andrey2020 [161]3 years ago
5 0

Answer:

The correct answer to the following question will be MAC Address.

Explanation:

MAC Address: MAC (Media Access Control) Address, is an address that uniquely identifies every device on the network. Each address is separated by a colon and consists of six sets of two-two character.

  • As we know, a switch collects all the information sent by a hub and transmits it to the designation but it takes a look at the MAC address of the source to see it is already in the address table or not.

leonid [27]3 years ago
3 0

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.

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Draw a timeline for each of the following scheduling algorithms. (It may be helpful to first compute a start and finish time for
12345 [234]

Answer:

See explanation below

Explanation:

Previos concepts

First Come First Serve (FCFS) "is an operating system scheduling algorithm that automatically executes queued requests and processes in order of their arrival".

Shortest job next (SJN), or the shortest job first (SJF) or shortest "is a scheduling policy that selects for execution the waiting process with the smallest execution time".

Shortest remaining time (SRF) "is a scheduling method that is a preemptive version of shortest job next scheduling'".

Round robin (RR) is an algorithm where the time parts "are assigned to each process in equal portions and in circular order, handling all processes without priority"

Solution for the problem

Assuming the dataset given on the plot attached.

Part a

For this algorithm the result would be:

Job A   0-6

Job B   6-(6+3) = 6-9

Job C   9-(9+1) = 9-10

Job D   10-(10+4) = 10-14

Part b

For this algorithm the result would be:

Job A   0-6

Job C   6-(6+1) = 6-7

Job B   7-(7+3) = 7-10

Job D   10-(10+4) = 10-14

Part c

For this algorithm the result would be:

Job A   0-1  until 14

Job B   2-(2+3) = 2-5

Job C   3-(3+2) = 3-5

Job D   9-(9+5) = 9-14

Part d

For this algorithm the result would be:

Job A   0-2 , 7-9, 12-14

Job B   2-4, 9-10

Job C   4-(4+1) = 4-5

Job D   5-7, 10-12

8 0
3 years ago
if i were to plug this in my ps4 usb port and connect it to the tv would it work please and if so please explain
Brilliant_brown [7]
Probably, most likely yes. this is just basically adding a bit of extra length. the ps4 port goes in the end and the part for the tv acts as a hdmi cord.
4 0
3 years ago
Read 2 more answers
Does chell in portal SAY a single word
musickatia [10]

Answer:No

Explanation:Chel was supposed to say hi at the end of portal 2 but didn’t cuz of portal jumping

5 0
3 years ago
Write code that prints: Ready! firstNumber ... 2 1 Run! Your code should contain a for loop. Print a newline after each number a
Citrus2011 [14]

Answer:

The program to this question can be describes as follows:

Program:

#include <stdio.h> //defining header file

int main() //defining main method

{

int n,i,x=0; //defining integer variable

printf("Enter a number: "); //print message

scanf("%d",&n); //input value from the user  

printf("%d\n",n); //print input value

for(i=1;i<n;i++)  //loop to count reverse number

{

x=n-i; //calculate value

printf("%d\n",x);  //print value

}

return 0;

}

Output:

Enter a number: 3

3

2

1

Explanation:

  • In the above program, three integer variable "n,i and x" is declared, in which variable n we take input from the user end and the variable i and x is used in the loop to calculate the value in the reverse order.
  • In the next step, a loop is declared, in which the variable x calculates the value in reverse order and uses a print method to print its value.  
5 0
3 years ago
2. Imagine that the user at computer A wants to open a file that is on computer C's hard disk, in a peer-to-peer fashion. What p
Elis [28]

Answer:

Since there is no server in a peer-to-peer network, both computers will share resources through the network component used in linking them together such as a cable or a switch.

Explanation:

In its simplest form, a peer-to-peer (P2P) network is created when two or more computers (in this case computer A and C) are connected and share resources without going through a separate server computer. A P2P network can be an ad hoc connection—a couple of computers connected via a Universal Serial Bus to transfer files or through an Ethernet cable. A P2P network also can be a permanent infrastructure that links a half-dozen computers in a small office over copper wires using switches as a central connector. Or a P2P network can be a network on a much grander scale in which special protocols and applications set up direct relationships among users over the Internet.

Please find attached the diagram of the peer-to-peer network of the two computers, computer A and computer. We have two network connections in the diagram.

The first one was implemented using a crossover Ethernet cable to connect both computers through the RJ45 LAN port on their network interface card.

In this network configuration, that will go through the NIC card from Computer C, through the cable to the NIC on computer A and vice versa.

In the second implementation, we used a switch to connect both computers using a straight Ethernet cable.

In this connection, data will go through the NIC card in computer C, through the cable connecting Computer C to the switch, through the switch, then through the cable connecting the switch to computer A and finally through the NIC card on computer A and vice versa

4 0
3 years ago
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