WGU C172 Network and Security - Foundations; PA and OA set*** Real Exam Questions Well Elaborated AnswersGraded A+.

It is a network of users that share computer resources in a limited area. - correct answer LAN Local Area Network - correct answer LAN How are Local Area Networks defined? - correct answer In terms of protocol and the topology used for accessing the network. A set of rules established for users to exchange information - correct answer Protocol The network architecture used to interconnect the networking equipment. - correct answer Topology What are the most common topologies for LANs? - correct answer Ring, Bus, and Star Uses a token that is placed in the data channel and circulates around the ring. - correct answer Token Ring topology A deterministic network - correct answer Token Ring Topology Each station connected to the network ensures access for transmission of its messages at regular or fixed time intervals - correct answer Deterministic What are the disadvantages of the Token Ring system? - correct answer 1. If an error changes the token pattern, it can cause the token to stop circulating. What is a disadvantage of the Token Ring system from the troubleshooting and maintenance? - correct answer The token ring path must be temporarily broken or interrupted if a computer or any device on the network is to be removed or added to the network. What is a solution to the troubleshooting and maintenance disadvantages of the Token Ring system? - correct answer Connect each computer or device on the network to a central token ring hub. A device that manages the passing of the token instead of relying on individual computers to pass it. - correct answer Token ring hub How does the token ring hub improve the network? - correct answer It improves the reliability of the network. Topology whereas the computers share the media or coaxial cable for data transmission. - correct answer Bus topology The coaxial cable that is looped through each networking device to transmit data in a bus topology - correct answer ThinNet In this topology, all devices on the network can see each other's data traffic. - correct answer Bus topology Topology whereas each computer must wait for pauses in transmission or until the transmission from one device is complete before initiating a new transmission onto the network. - correct answer Bus topology What are the disadvantages of a bus topology? - correct answer "1. Data can be corrupted if ore than one device on the network transmits at the same time and will have to be resubmitted. 2. The use of the shared coaxial cable prevents data transmission from being very bandwidth-efficient." Which topology is seldomly used in modern networks? - correct answer Bus topology What is the most common topology used in today's LANs? - correct answer Star topology Topology that uses twisted-pair cables with modular plugs to connect computers and other networking devices. - correct answer Star topology Topology whereas each device is connected to a switch or hub - correct answer Star A switch or hub facilitates the transfer of data between networking devices in this topology - correct answer star Transmits data to all the devices connected in the star network - correct answer hub Also called a multiport repeater - correct answer hub Not meant for large networks, but are still used in some smaller, slower speed LANs - correct answer hub A transmission from a hub in a star network to all the devices in the network connected to the hub - correct answer broadcast Stores the hardware or physical address for each device connected to its ports in a star network - correct answer switch Sends data transmissions directly to the port of the destination device on the network - correct answer switch The physical input/output interfaces to the networking hardware - correct answer port Where the cables physically connect to each other or a central switch or hub - correct answer Port Only the intended destination device on this network will see the data traffic - correct answer star What is an advantage of the star topology? - correct answer It improves the efficiency of the available bandwidth of the network What is an advantage of the star topology from the troubleshooting and maintenance? - correct answer A device can be removed or added without disrupting other devices on the network All devices are connected to each other - correct answer mesh topology What is an advantage of the mesh network? - correct answer It provides full redundancy in the network data paths What is a disadvantage of the mesh network? - correct answer The additional data paths increase the cabling cost and the network hardware cost. It is also very complex. What type of applications is the mesh topology suited for? - correct answer high-reliability applications What type of applications is the mesh topology not suited for? - correct answer general networking applications Open systems interconnect reference model - correct answer OSI