15.2.2 Worksheet: Protocols
In this worksheet, you will write the name of the protocol and the default port(s) for each protocol definition in the table.
| Protocol Definition | Protocol | Default Port(s) |
| Provides connections to computers over a TCP/IP network | Telnet/SSH | Puerto 23/22 |
| Sends e-mail over a TCP/IP network | SMTP | Puerto 25 |
| Translates URLs to IP address | DNS | Puerto 53 |
| Transports Web pages over a TCP/IP network | HTTP | Puerto 80 |
| Automates assignment of IP address on a network | DHCP | Puerto 67 |
| Securely transports Web pages over a TCP/IP network | HTTPS | Puerto 443 |
| Transports files over a TCP/IP network | FTP/TFTP | Puerto 20 ó 21 |
15.3.2 Worksheet: ISP Connection Types
In this worksheet, you will determine the best ISP type for your customer.
Be prepared to discuss your answers.
Scenario 1
The customer lives in a remote area deep in a valley and cannot afford broadband.
R/: Una opción sería la conexión satelital, ya que son para personas que viven en zonas rurales, además de la conexión a internet de banda ancha de alta velocidad permanente.
Scenario 2
The customer can only receive television using satellite but lives in an area where high-speed
Internet access is available.
R/: Una opción sería la conexion por cable ya que esta utiliza líneas de cable coaxial diseñadas para transportar señales de televisión por cable, además que tiene la opción de instalar un servicio de conexión a internet de alta velocidad.
Scenario 3
The customer is a sales person and travels most of the time. A connection to the main office is required almost 24 hours a day.
R/: Una opción sería la conexión ISDN que permite que varios dispositivos compartan una misma línea telefónica, además que se encuentra disponible en la mayoría de los lugares.
Scenario 4
The customer works from home, needs the fastest possible upload and download speeds to access the company FTP server, and lives in a very remote area where DSL or cable are not available.
R/: Una opción sería la conexión por satélite, ya que permite intercambiar señales.
Scenario 5
The customer wants to bundle television, Internet access and phone service all through the same company, but the local phone company does not offer all the services
R/: Una opción sería la conexión por cable, ya que este incorpora televisión, internet de alta velocidad.
15.8.3 Lab: Remote Technician: Fix Network Problem
In this lab, you will gather data from the customer, and then instruct the customer on how to fix a computer that does not connect to the network. Document the customer’s problem in the work order below.
Company Name: JH Paint Supply
Contact: Jill Henderson
Company Address: 114 W. Main Street
Company Phone: 1-888-555-2143
Category Network Closure Code __________ Status Open
Type:_________________ Escalated Yes Pending ____________
Item_____________ Pending Until Date ________________
Business Impacting? X Yes Ο No
Summary One computer cannot connect to the Internet, network shares, or network printers.
Case ID# ______________ Connection Type Wireless
Priority 2 Environment ________________________
User Platform Windows XP Pro
Generating a New Ticket
Problem Description: All computers boot up properly. Computer does not connect to shares or the Internet. Computer has not been moved. Cables are securely connected. Link lights are blinking.
Problem Solution: Habría que verificar las conexiones que el computador tiene tanto en el Router como las IP, si los puertos están correctamente configurados, si se tiene algún proxy o alguna restricción, conocerla o saberla configurar.
Use the contact information and problem description below to report the following information to a level-two technician:
Problem Description
Well, the problem does not always seem to be there. Typically, not all computers on the network are used all of the time, so everything seems to be fine. On some busy days, every computer is being used and there is always one computer that cannot connect. I cannot figure out what the problem is because it is not usually on the same computer. When a computer cannot make connectivity, I check to make sure all cables and connections are fine.
(NOTE: Once you have given the level-two tech the problem description, use the Additional Information to answer any follow up questions the technician may ask.)
Additional Information
Windows XP Pro
Computer has no new hardware
Computer has not been moved recently
A extra computer was added to the network recently
Computer looks the same as it did yesterday
Problem Solution:
Este equipo, así como los demás deben ser configurados con una IP específica y mascara subred determinada para el lugar en el que se está trabajando, además del protocolo de internet del área. Se deberá especificar al cliente esta posible solución y así solucionar el problema.
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