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ITM 301 Lecture Notes - Data Terminal Equipment, Access Method, Network Layer

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inxvho
6 Jan 2023
School
Ryerson University
Department
Information Technology Management
Course
ITM 301
Professor

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Document Summary

Wan: network traversing significant distance, connecting lans. Type of wan needed depends upon: traffic load, budget, geographic breadth, commercially available technology. Wan link: connection between one wan site (endpoint) and another site, can be point-to-point (one site to only one site) or multipoint (one site to two or more other sites) Data terminal equipment (dte: customer"s endpoint device on the wan, communicates on the lan. Data communications equipment (dce: carrier"s endpoint device for the wan, communicates on the wan. There are steps to take when troubleshooting a problem with a wan connection: before calling your isp. Preventative measures can be implemented to avoid having the problem in the first place. Need to know the difference between isp"s equipment and subscriber"s equipment located at the customer"s premises, regardless of who owns it and who is responsible, is called customer premise equipment (cpe)

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Related Questions

Mention the name of the WAN technologies providing high-speed network connection through packet switching (over 2000Mbps).

You manage a network that has multiple internal subnets.

You connect a workstation to the 192.168.1.0/24 subnet This workstation can communicate with some hosts on the private network, but not with other hosts.

You run IPCONFIG/ALL and see the following:

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : mydomain.local

Description . . . . . . . . . . . . . . . : Broadcom network adapter

Physical Address. . . . . . . . . . . . : 00 - AA-BB-CC-74-EF

DHCP Enabled . . . . . . . . . . . . . .: No

Autoconfiguration Enabled. . . . . . : Yes

IPv4 Address. . . . . . . . . . . . . . . : 192. 168 . 1. 102(Preferred)

Subnet Mask. . . . . . . . . . . . . . . : 255. 255. 0. 0

Default Gateway. . . . . . . . . . . . .: 192. 168. 1.1

DNS Servers. . . . . . . . . . . . .  . .: 192. 168 . 2 . 20

 

What is the most likely cause of the problem?

  1. Incorrect default gateway
  2. Incorrect IP address
  3. Incorrect DNS server address
  4. Incorrect subnet mask

 

Question 1: Please revise the following paragraph for clarity and conciseness. 

It should be mentioned that in recent years, touchscreen technology has become widely used for many different purposes as a way to interact with computer systems, particular for mobile devices. A touchscreen is an electronic visual display that can be controlled by touching the screen with one or more fingers, as well, to allow for a much more direct interaction with what is displayed compared to a device like a mouse. Touchscreens have become very common on smart phones, and increasingly, regular laptop and desktop computers use touchscreen displays so users can use both touch as well as more traditional ways of input. At a basic level, touchscreen technology works similar to a computer mouse, yet instead of moving pointer with a mouse and then clicking on a location, one must press on the location with their finger. However, multi-touch technology makes it possible to interact with the computer display in many different ways which are inclusive of tasks like scrolling up and down a webpage, selecting text and to drag-and-drop. The first major technology that became successful was resistive touchscreen technology. Resistive touchscreen technology uses a panel that is consisted of several layers, including two thin, electrically charged layers separated by a thin space. By pressing on the panel, these two layers touch and the location of the connection is recorded as the input. Resistive touchscreens are considered to be relatively cheap and very resistant to liquids such as water. The major downsides are that one is needed to actually press down with a certain amount of pressure and they have relatively poor contrast. As a result, resistive touchscreens did not become widely used for computer systems but instead are developed as part as other electronic systems.