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The basic approach used by Traceroute when it establishes a snapshot of the devices traversed to get to a remote machine is to:Question 3Answerestablish a connection (3-way handshake) with each device in turnsend a series of ICMP echo requests, with incrementing TTL numberssend a single ICMP echo request with a high enough TTL value that it will almost certainly make it through all the switching points along the way, and each one will send a message back when it processes the packetuse DNS to get the IP address of each device on the pathsend a series of ICMP echo requests, with decrementing TTL numbers

Question

The basic approach used by Traceroute when it establishes a snapshot of the devices traversed to get to a remote machine is to:Question 3Answerestablish a connection (3-way handshake) with each device in turnsend a series of ICMP echo requests, with incrementing TTL numberssend a single ICMP echo request with a high enough TTL value that it will almost certainly make it through all the switching points along the way, and each one will send a message back when it processes the packetuse DNS to get the IP address of each device on the pathsend a series of ICMP echo requests, with decrementing TTL numbers

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Solution

La respuesta correcta es "enviar una serie de solicitudes de eco ICMP, con números TTL incrementales".

Aquí está el proceso paso a paso:

  1. Inicio del Traceroute: Traceroute comienza enviando un paquete de solicitud de eco ICMP (o un paquete UDP en algunos casos) al destino con un TTL (Time To Live) de 1.

  2. Primer salto: El primer enrutador en el camino recibe el paquete, decrementa el TTL a 0, y descarta el paquete. Luego, envía un mensaje ICMP "Time Exceeded" de vuelta al origen.

  3. Registro del primer salto: Traceroute registra la dirección IP del primer enrutador y el tiempo que tomó para recibir la respuesta.

  4. Incremento del TTL: Traceroute envía otro paquete, esta vez con un TTL de 2. El segundo enrutador en el camino recibe el paquete, decrementa el TTL a 0, y descarta el paquete, enviando de nuevo un mensaje ICMP "Time Exceeded".

  5. Registro de los saltos subsecuentes: Este proceso se repite, incrementando el TTL en 1 para cada paquete enviado, hasta que el paquete finalmente llega al destino o hasta que se alcanza un TTL máximo predefinido.

  6. Destino alcanzado: Cuando el paquete finalmente llega al destino, el destino responde con un mensaje ICMP "Echo Reply" (si se usa ICMP) o simplemente no responde si se usa UDP.

Este método permite a Traceroute mapear la ruta completa desde el origen hasta el destino, registrando cada dispositivo intermedio en el camino.

This problem has been solved

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