Exam (elaborations)
WGU D322 - Introduction to IT Section 4: Computer Networks Exam – Q’s and A’s
WGU D322 - Introduction to IT Section 4: Computer Networks Exam – Q’s and A’s
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WGU D322 - Introduction to IT Section 4:Computer Networks Exam – Q’s and A’s
Networking - -Sharing information and resources through linked computer
systems.
-Network Types - PAN (Personal Area Network) - -A computer in the middle
and other devices (including a cell phone, tablet, wireless mouse, wireless
headset, and printer) connected to it.
-Network Types - LAN (Local Area Network) - -Consist of a collection of
computers in a single building or building complex. (e.g., A router in the
middle with various other devices such as workstations, a cell phone, a
tablet, and printer connected.)
-Network Types - WAN (Wide Area Network) - -Link systems over a greater
distance including machines on the opposite sides of the world.
-TCP/IP Protocol - -Communication over the internet is governed by an open
collection of standards by this protocol. Anyone is free to use these protocols
without paying fees or signing license agreements.
-Four Common Network Topology - -Bus, Star, Ring, and Mesh (Bus and Star
network topologies are the most common).
-Network Topology - BUS - -Machines are connected to a common
communication line. It became popular in the 1990s when it was
implemented under a set of standards/protocols known as the Ethernet.
-Network Topology - Star - -Have a single machine serving as a central point
to which all others are connected. (Various computers connected in the
middle by a router). Roots as far back as the 1970s when it evolved from the
idea of a large central computer system servicing many users at once.
In wireless networks where communication is carried out via radio broadcast
to a central machine called the access point (AP).
-Network Topology - Ring - -Connect directly to each other as a peer.
-Network Topology - Mesh - -It connects every device in a network to every
other device; it enabled redundancy while also introducing significantly more
network traffic. Alternatively, a network could use a hybrid of these
topologies.
* A network in which devices -- or nodes -- are linked together, branching off
other devices or nodes. These networks are set up to efficiently route data
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