WGU C712 Network & Security – Foundations, Exam Questions ( Answered). 100% Accurate, rated A

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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. Enterpris... e 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 [Show More]

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