WGU C712 Network & Security –
Foundations, Exam Questions (
Answered). 100% Accurate, rated A
What are 7 different types of computer networks? - ✔✔-1. LAN (Local Area Networks)
2. Enterprise Network
3. CAN (Campus
...
WGU C712 Network & Security –
Foundations, Exam Questions (
Answered). 100% Accurate, rated A
What are 7 different types of computer networks? - ✔✔-1. LAN (Local Area Networks)
2. Enterprise Network
3. CAN (Campus Area Networks)
4. MAN (Metropolitan Area Networks
5. Metro Ethernet
6. PAN (Personal Area Networks)
7. WAN (Wide Area Networks)
What is a protocol? - ✔✔-a set of rules established for users to exchange information
What is a network topography? - ✔✔-a network architecture used to interconnect the networking
equipment
What are the 3 common topographies for a LAN? - ✔✔-star, ring, bus
What is Token Ring Topography? - ✔✔-a token (t) is placed in the data channel and circulates around
the ring
What is Token Passing? - ✔✔-an electrical token circulates around a network, and control of the token
enables the user to gain access to the network
is the IEEE? - ✔✔-Institute of Electrical and Electronics Engineers; one of the major standard-setting
bodies for technological development
What is a Deterministic network? - ✔✔-each station connected to the network is ensured access for
transmission of its messages at regular/fixed time intervals
What is an example of a deterministic network - ✔✔-Token Ring
What are 3 disadvantages of Token Ring? - ✔✔--if an error changes the token pattern it can cause the
token to stop circulating
-Ring networks rely on each system to relay data to the next user (failed stations can cause data traffic
to cease)
-the token ring path must be temporarily broken/interrupted if a device is added/removed (causes
downtime in network)
What is a Token Ring Hub? - ✔✔-manages passing of the token rather than relying on individual
computers to pass it; improves reliability of network
Which topography has replaced Token ring in most modern computer networks? - ✔✔-Ethernet
topography
What is Bus Topograpy? - ✔✔-computers share the media (coaxial cable) for data transmission
What is a disadvantage of Bus Topography? - ✔✔-use of a shared coaxial cable prevents data
transmission from being bandwidth efficient
Which network topography is most common in a LAN? - ✔✔-Star
What is Star Topography? - ✔✔-twisted-pair cables with modular plugs used to connect computers and
other devices; switch/hub at center of star network
What is a hub? - ✔✔-a multiport repeater; data it receives is broadcast and seen by all devices
connected to its ports
What is a switch - ✔✔-Used in the center of star to minimize unnecessary data traffic and isolate
sections of network
What is Mesh topography? - ✔✔-all networking devices are directly connected to each other
When is a mesh topography suitable? - ✔✔-for high-reliability networks
T/F: A protocol defines the network architecture used to interconnect the networking equipment - ✔✔-
false
Which network topology is the most expensive to implement? - ✔✔-Mesh
Which network topology requires every host to be connected to the central switch/hub? - ✔✔-Star
Expand the acronym OSI - ✔✔-Open Systems Interconnection
What is the intent of the OSI Model? - ✔✔-to provide a framework for networking that ensures
compatibility in network hardware and software and accelerate development of new networking
technology
What are the 7 layers of the OSI Model? - ✔✔-7. Application
6. Presentation
5. Session
4. Transport
3. Network
2. Data Link
1. Physical
What is the function of the Application layer of OSI? - ✔✔-support for applications; HTTP, FTP, SMTP
What is the function of the Presentation layer of OSI? - ✔✔-protocol conversion, data translation; ASCII,
JPEG
What is the function of the Session layer of OSI? - ✔✔-Establishes, manages, and terminates sessions;
NFS, SQL
What is the function of the Transport layer of OSI? - ✔✔-Ensures error-free packets; TCP, UDP
What is the function of the Network layer of OSI? - ✔✔-Provides routing decisions; IP, IPX
What is the function of the Data Link layer of OSI? - ✔✔-Provides for the flow of data; MAC addresses
What is the function of the Physical layer of OSI? - ✔✔-Signals and media; MIC's, twisted-pair cable,
fiber
What are the 3 steps to isolating a network problem? - ✔✔-1. Is the connection to the machine down
(OSI layer 1)
2. Is the network down (OSI layer 2)
3. Is a service on a specific machine down (OSI layer 7)
What is a helpful Pneumonic device to remember the OSI layers? - ✔✔-Please Do Not Throw Sausage
Pizza Away (layer 1-7); All People Seem To Need Data Processing (layer 7-1)
What are the 4 layers of the TCP/IP model? - ✔✔-4. Applicatio
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